feat(nc-android): sentry integration and topbar navigation

copy change
fix(nyms5-android): add check for worker and proxy states desync
2023-06-22 14:21:24 +02:00 · 2023-06-16 11:20:20 +02:00 · 2023-06-16 10:08:57 +02:00 · 2023-06-15 19:23:23 +02:00 · 2023-06-13 17:25:42 +01:00 · 2023-06-13 13:07:02 +02:00
388 changed files with 28044 additions and 7830 deletions
@@ -63,7 +63,7 @@ jobs:
      - name: Install Rust stable
        uses: actions-rs/toolchain@v1
        with:
-          toolchain: stable
+          toolchain: 1.69.0

      - name: Build all binaries
        uses: actions-rs/cargo@v1
@@ -74,7 +74,7 @@ jobs:
      - name: Install Rust stable
        uses: actions-rs/toolchain@v1
        with:
-          toolchain: stable
+          toolchain: 1.69.0
          target: wasm32-unknown-unknown
          override: true
          components: rustfmt, clippy
@@ -107,6 +107,8 @@ jobs:
          cp contracts/target/wasm32-unknown-unknown/release/nym_coconut_dkg.wasm $OUTPUT_DIR
          cp contracts/target/wasm32-unknown-unknown/release/cw3_flex_multisig.wasm $OUTPUT_DIR
          cp contracts/target/wasm32-unknown-unknown/release/cw4_group.wasm $OUTPUT_DIR
+          cp contracts/target/wasm32-unknown-unknown/release/nym_service_provider_directory.wasm $OUTPUT_DIR
+          cp contracts/target/wasm32-unknown-unknown/release/nym_name_service.wasm $OUTPUT_DIR

      - name: Deploy branch to CI www
        continue-on-error: true
@@ -9,12 +9,14 @@ on:
      - 'gateway/**'
      - 'integrations/**'
      - 'mixnode/**'
+      - 'sdk/lib/socks5-listener/**'
      - 'sdk/rust/nym-sdk/**'
      - 'service-providers/**'
      - 'nym-api/**'
      - 'nym-outfox/**'
      - 'tools/nym-cli/**'
      - 'tools/ts-rs-cli/**'
+      - 'Cargo.toml'
  pull_request:
    paths:
      - 'clients/**'
@@ -23,12 +25,14 @@ on:
      - 'gateway/**'
      - 'integrations/**'
      - 'mixnode/**'
+      - 'sdk/lib/socks5-listener/**'
      - 'sdk/rust/nym-sdk/**'
      - 'service-providers/**'
      - 'nym-api/**'
      - 'nym-outfox/**'
      - 'tools/nym-cli/**'
      - 'tools/ts-rs-cli/**'
+      - 'Cargo.toml'

 jobs:
  build:
@@ -1,138 +0,0 @@
-name: Nym Connect - Android APK Build
-
-on:
-  workflow_dispatch:
-  push:
-    branches:
-      - "release/nc-android-v[0-9].[0-9].[0-9]*"
-
-jobs:
-  build:
-    name: Build APK
-    runs-on: custom-runner-linux
-    env:
-      ANDROID_HOME: ${{ github.workspace }}/android-sdk
-      NDK_VERSION: 25.1.8937393
-      NDK_HOME: ${{ github.workspace }}/android-sdk/ndk/25.1.8937393
-      SDK_PLATFORM_VERSION: android-33
-      SDK_BUILDTOOLS_VERSION: 33.0.1
-
-    steps:
-      - name: Install Dependencies (Linux)
-        # https://next--tauri.netlify.app/next/guides/getting-started/prerequisites/linux/#1-system-dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get -y install \
-          build-essential \
-          unzip \
-          curl \
-          wget \
-          libssl-dev \
-          squashfs-tools \
-          librsvg2-dev
-
-      - name: Checkout
-        uses: actions/checkout@v3
-
-      - name: Install Java
-        uses: actions/setup-java@v3
-        with:
-          distribution: "temurin"
-          java-version: "17"
-
-      - name: Install Android SDK manager
-        # https://developer.android.com/studio/command-line/sdkmanager
-        run: |
-          curl -sS https://dl.google.com/android/repository/commandlinetools-linux-9477386_latest.zip -o cmdline-tools.zip
-          unzip cmdline-tools.zip
-          mkdir -p $ANDROID_HOME/cmdline-tools/latest
-          mv cmdline-tools/* $ANDROID_HOME/cmdline-tools/latest
-          rm -rf cmdline-tools
-
-      - name: Install Android S/NDK
-        run: |
-          echo y | $ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager --licenses
-          echo y | $ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager \
-            "platforms;$SDK_PLATFORM_VERSION" \
-            "platform-tools" \
-            "ndk;$NDK_VERSION" \
-            "build-tools;$SDK_BUILDTOOLS_VERSION"
-
-      - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
-
-      # TODO this step takes a considerable amount of time
-      # We could avoid to compile from source tauri-cli and use instead
-      # pre-compiled binary provided by the node package `@tauri-apps/cli`
-      # But when using the later the build fails for some reason
-      # so keep installing and using tauri-cli
-      - name: Install tauri cli
-        run: cargo install tauri-cli --version "^2.0.0-alpha.2"
-
-      - name: Install rust android targets
-        run: |
-          rustup target add aarch64-linux-android \
-            armv7-linux-androideabi \
-            i686-linux-android \
-            x86_64-linux-android
-
-      - name: Setup Nodejs
-        uses: actions/setup-node@v3
-        with:
-          node-version: 18
-
-      - name: Install yarn
-        run: |
-          npm i -g yarn
-          yarn --version
-
-      - name: Build frontend code
-        run: |
-          yarn install --frozen-lockfile
-          yarn build
-          yarn workspace @nym/nym-connect-mobile webpack:prod
-
-      - name: Build APK
-        working-directory: nym-connect/mobile
-        env:
-          # NODE_TAURI_CLI=${{ github.workspace }}/nym-connect/mobile/node_modules/.bin/tauri
-          ANDROID_SDK_ROOT: ${{ env.ANDROID_HOME }}
-          WRY_ANDROID_PACKAGE: net.nymtech.nym_connect
-          WRY_ANDROID_LIBRARY: nym_connect
-        # TODO build with release profile (--release), it will requires
-        # to sign the APK. For now build with debug profile to avoid that
-        # TODO build using `yarn tauri`, provide NODE_TAURI_CLI, see TODO notes above
-        run: cargo tauri android build --debug --apk --split-per-abi -t aarch64
-
-      # TODO add the version number to APK name
-      - name: Rename APK artifact
-        run: |
-          mkdir apk/
-          mv nym-connect/mobile/src-tauri/gen/android/nym_connect/app/build/outputs/apk/arm64/debug/app-arm64-debug.apk \
-            apk/nym-connect-arm64-debug.apk
-          mv nym-connect/mobile/src-tauri/gen/android/nym_connect/app/build/outputs/apk/x86_64/debug/app-x86_64-debug.apk \
-            apk/nym-connect-x86_64-debug.apk
-
-      - name: Upload APK artifact
-        uses: actions/upload-artifact@v3
-        with:
-          name: nc-apk-debug
-          path: |
-            apk/nym-connect-arm64-debug.apk
-            apk/nym-connect-x86_64-debug.apk
-
-  # publish:
-  #   name: Publish APK
-  #   needs: build
-  #   runs-on: ubuntu-latest
-  #   steps:
-  #     - name: Checkout
-  #       uses: actions/checkout@v3
-  #     - name: Download binary artifact
-  #       uses: actions/download-artifact@v3
-  #       with:
-  #         name: nc-apk-debug
-  #         path: apk
-  #     # TODO add a step to upload the APK somewhere
-  #     - name: Publish
-  #       uses: ???
@@ -0,0 +1,110 @@
+name: Nyms5 Android
+# unsigned APKs only, supported archs:
+# - arm64-v8a (arm64)
+# - x86_64
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - nyms5-android-v*
+
+jobs:
+  build:
+    name: Build APK
+    runs-on: custom-runner-linux
+    env:
+      ANDROID_HOME: ${{ github.workspace }}/android-sdk
+      NDK_VERSION: 25.2.9519653
+      NDK_HOME: ${{ github.workspace }}/android-sdk/ndk/25.2.9519653
+      SDK_PLATFORM_VERSION: android-33
+      SDK_BUILDTOOLS_VERSION: 33.0.2
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install Java
+        uses: actions/setup-java@v3
+        with:
+          distribution: "temurin"
+          java-version: "17"
+
+      - name: Install Android SDK manager
+        # https://developer.android.com/studio/command-line/sdkmanager
+        run: |
+          curl -sS https://dl.google.com/android/repository/commandlinetools-linux-9477386_latest.zip -o cmdline-tools.zip
+          unzip cmdline-tools.zip
+          mkdir -p $ANDROID_HOME/cmdline-tools/latest
+          mv cmdline-tools/* $ANDROID_HOME/cmdline-tools/latest
+          rm -rf cmdline-tools
+
+      - name: Install Android S/NDK
+        run: |
+          echo y | $ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager --licenses
+          echo y | $ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager \
+            "platforms;$SDK_PLATFORM_VERSION" \
+            "platform-tools" \
+            "ndk;$NDK_VERSION" \
+            "build-tools;$SDK_BUILDTOOLS_VERSION"
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@1.70.0
+
+      - name: Install rust android targets
+        run: |
+          rustup target add aarch64-linux-android \
+            x86_64-linux-android
+
+      - name: Build lib nym-socks5-listener
+        working-directory: sdk/lib/socks5-listener/
+        env:
+          RELEASE: true
+          RUSTFLAGS: "-C link-args=-Wl,--hash-style=gnu"
+        # build for arm64 and x86_64
+        run: ./build-android.sh aarch64 x86_64
+
+      - name: Build APKs (unsigned)
+        working-directory: nym-connect/native/android
+        env:
+          ANDROID_SDK_ROOT: ${{ env.ANDROID_HOME }}
+        # build for arm64 and x86_64
+        run: |
+          ./gradlew :app:assembleArch64Debug
+          ./gradlew :app:assembleArch64Release
+
+      - name: Prepare APKs
+        run: |
+          mkdir apk
+          mv nym-connect/native/android/app/build/outputs/apk/arch64/debug/app-arch64-debug.apk \
+            apk/nyms5-arch64-debug.apk
+          mv nym-connect/native/android/app/build/outputs/apk/arch64/release/app-arch64-release-unsigned.apk \
+            apk/nyms5-arch64-release.apk
+
+      - name: Upload APKs
+        uses: actions/upload-artifact@v3
+        with:
+          name: nyms5-apk-arch64
+          path: |
+            apk/nyms5-arch64-debug.apk
+            apk/nyms5-arch64-release.apk
+
+  gh-release:
+    name: Publish APK (GH release)
+    needs: build
+    runs-on: custom-runner-linux
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Download binary artifact
+        uses: actions/download-artifact@v3
+        with:
+          name: nyms5-apk-arch64
+          path: apk
+      - name: Release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: |
+            apk/nyms5-arch64-debug.apk
+            apk/nyms5-arch64-release.apk
+
@@ -8,6 +8,7 @@
 .idea
 target
 .env
+.env.dev
 /.vscode/settings.json
 validator/.vscode
 sample-configs/validator-config.toml
@@ -41,4 +42,5 @@ storybook-static
 envs/qwerty.env
 .parcel-cache
 **/.DS_Store
-cpu-cycles/libcpucycles/build
+cpu-cycles/libcpucycles/build
+foxyfox.env
@@ -4,6 +4,24 @@ Post 1.0.0 release, the changelog format is based on [Keep a Changelog](https://

 ## [Unreleased]

+## [v1.1.21] (2023-06-13)
+
+- mixFetch: Change socks5 `SendRequest` to include OrderedMessage index as a field rather than making it serialized inside the `data` field
+ ([#3534])
+- Explorer - add more data columns to the Service Provider section: ([#3474])
+- network-requester: support report if they run an open proxy using `ControlRequest` API ([#3461])
+- Refactor client configs (London discussion) ([#3444])
+- Increase `DEFAULT_MAXIMUM_CONNECTION_BUFFER_SIZE` to 2000 to improve reliability ([#3433])
+- socks5: sender waits for lanes to clear even though the connection is closed ([#3366])
+- version bump for variables ([#3545])
+
+[#3534]: https://github.com/nymtech/nym/issues/3534
+[#3474]: https://github.com/nymtech/nym/issues/3474
+[#3461]: https://github.com/nymtech/nym/issues/3461
+[#3444]: https://github.com/nymtech/nym/issues/3444
+[#3433]: https://github.com/nymtech/nym/issues/3433
+[#3366]: https://github.com/nymtech/nym/issues/3366
+[#3545]: https://github.com/nymtech/nym/pull/3545

 ## [v1.1.20] (2023-06-06)

@@ -78,6 +78,7 @@ members = [
    "gateway/gateway-requests",
    "integrations/bity",
    "mixnode",
+    "sdk/lib/socks5-listener",
    "sdk/rust/nym-sdk",
    "service-providers/common",
    "service-providers/network-requester",
@@ -86,6 +87,7 @@ members = [
    "nym-api/nym-api-requests",
    "nym-outfox",
    "tools/nym-cli",
+    "tools/nym-nr-query",
    "tools/ts-rs-cli"
 ]

@@ -50,7 +50,7 @@ Node, node operator and delegator rewards are determined according to the princi
 |<img src="https://render.githubusercontent.com/render/math?math=\lambda_{i}#gh-light-mode-only"><img src="https://render.githubusercontent.com/render/math?math=\color{white}\lambda_{i}#gh-dark-mode-only">|ratio of stake operator has pledged to their node to the token circulating supply.
 |<img src="https://render.githubusercontent.com/render/math?math=\omega_{i}#gh-light-mode-only"><img src="https://render.githubusercontent.com/render/math?math=\color{white}\omega_{i}#gh-dark-mode-only">|fraction of total effort undertaken by node `i`, set to `1/k`.
 |<img src="https://render.githubusercontent.com/render/math?math=k#gh-light-mode-only"><img src="https://render.githubusercontent.com/render/math?math=\color{white}k#gh-dark-mode-only">|number of nodes stakeholders are incentivised to create, set by the validators, a matter of governance. Currently determined by the `reward set` size, and set to 720 in testnet Sandbox.
-|<img src="https://render.githubusercontent.com/render/math?math=\alpha#gh-light-mode-only"><img src="https://render.githubusercontent.com/render/math?math=\color{white}\alpha#gh-dark-mode-only">|Sybil attack resistance parameter - the higher this parameter is set the stronger the reduction in competitivness gets for a Sybil attacker.
+|<img src="https://render.githubusercontent.com/render/math?math=\alpha#gh-light-mode-only"><img src="https://render.githubusercontent.com/render/math?math=\color{white}\alpha#gh-dark-mode-only">|Sybil attack resistance parameter - the higher this parameter is set the stronger the reduction in competitiveness gets for a Sybil attacker.
 |<img src="https://render.githubusercontent.com/render/math?math=PM_{i}#gh-light-mode-only"><img src="https://render.githubusercontent.com/render/math?math=\color{white}PM_{i}#gh-dark-mode-only">|declared profit margin of operator `i`, defaults to 10% in.
 |<img src="https://render.githubusercontent.com/render/math?math=PF_{i}#gh-light-mode-only"><img src="https://render.githubusercontent.com/render/math?math=\color{white}PF_{i}#gh-dark-mode-only">|uptime of node `i`, scaled to 0 - 1, for the rewarding epoch
 |<img src="https://render.githubusercontent.com/render/math?math=PP_{i}#gh-light-mode-only"><img src="https://render.githubusercontent.com/render/math?math=\color{white}PP_{i}#gh-dark-mode-only">|cost of operating node `i` for the duration of the rewarding epoch, set to 40 NYMT.
@@ -74,7 +74,7 @@ Operator of node `i` is credited with the following amount:
 <img src="https://render.githubusercontent.com/render/math?math=min\{PP_{i},R_{i})\} %2b max\{0, (PM_{i} %2b (1 - PM_{i}) \cdot \lambda_{i}/\delta_{i}) \cdot (R_{i} - PP_{i})\}#gh-light-mode-only">
 <img src="https://render.githubusercontent.com/render/math?math=\color{white}min\{PP_{i},R_{i})\} %2b max\{0, (PM_{i} %2b (1 - PM_{i}) \cdot \lambda_{i}/\delta_{i}) \cdot (R_{i} - PP_{i})\}#gh-dark-mode-only">

-Delegate with stake `s` recieves:
+Delegate with stake `s` receives:

 <img src="https://render.githubusercontent.com/render/math?math=max\{0, (1-PM_{i}) \cdot (s^'/\sigma_{i}) \cdot (R_{i} - PP_{i})\}#gh-light-mode-only">
 <img src="https://render.githubusercontent.com/render/math?math=\color{white}max\{0, (1-PM_{i}) \cdot (s^'/\sigma_{i}) \cdot (R_{i} - PP_{i})\}#gh-dark-mode-only">
@@ -12,7 +12,9 @@ serde = { workspace = true, features = ["derive"] }
 thiserror = "1.0"
 tokio = { version = "1.24.1", features = ["rt-multi-thread", "net", "signal", "macros"] } # async runtime

+
 nym-bandwidth-controller = { path = "../../common/bandwidth-controller" }
+nym-client-core = { path = "../../common/client-core" }
 nym-config = { path = "../../common/config" }
 nym-credentials = { path = "../../common/credentials" }
 nym-credential-storage = { path = "../../common/credential-storage" }
@@ -1,4 +1,4 @@
-// Copyright 2022 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2022-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

 mod commands;
@@ -9,13 +9,14 @@ use commands::*;
 use error::Result;
 use log::*;
 use nym_bin_common::completions::fig_generate;
-use nym_config::{CRED_DB_FILE_NAME, DATA_DIR};
+use nym_config::DEFAULT_DATA_DIR;
 use nym_network_defaults::{setup_env, NymNetworkDetails};
 use std::process::exit;
 use std::time::{Duration, SystemTime};

 use clap::{CommandFactory, Parser};
 use nym_bin_common::logging::setup_logging;
+use nym_client_core::config::disk_persistence::CommonClientPaths;
 use nym_validator_client::nyxd::traits::DkgQueryClient;
 use nym_validator_client::nyxd::{Coin, CosmWasmClient};
 use nym_validator_client::Config;
@@ -71,10 +72,11 @@ async fn main() -> Result<()> {

    match args.command {
        Command::Run(r) => {
-            let db_path = r
-                .client_home_directory
-                .join(DATA_DIR)
-                .join(CRED_DB_FILE_NAME);
+            // we assume the structure of <home-dir>/data
+            let data_dir = r.client_home_directory.join(DEFAULT_DATA_DIR);
+            let paths = CommonClientPaths::new_default(data_dir);
+            let db_path = paths.credentials_database;
+
            let shared_storage =
                nym_credential_storage::initialise_persistent_storage(db_path).await;
            let recovery_storage = recovery_storage::RecoveryStorage::new(r.recovery_dir)?;
@@ -1,6 +1,6 @@
 [package]
 name = "nym-client"
-version = "1.1.20"
+version = "1.1.21"
 authors = ["Dave Hrycyszyn <futurechimp@users.noreply.github.com>", "Jędrzej Stuczyński <andrew@nymtech.net>"]
 description = "Implementation of the Nym Client"
 edition = "2021"
@@ -1,99 +1,104 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use crate::client::config::template::config_template;
-use nym_client_core::config::ClientCoreConfigTrait;
+use crate::client::config::persistence::ClientPaths;
+use crate::client::config::template::CONFIG_TEMPLATE;
+use nym_bin_common::logging::LoggingSettings;
 use nym_config::defaults::DEFAULT_WEBSOCKET_LISTENING_PORT;
-use nym_config::{NymConfig, OptionalSet};
+use nym_config::{
+    must_get_home, read_config_from_toml_file, save_formatted_config_to_file, NymConfigTemplate,
+    OptionalSet, DEFAULT_CONFIG_DIR, DEFAULT_CONFIG_FILENAME, DEFAULT_DATA_DIR, NYM_DIR,
+};
 use serde::{Deserialize, Serialize};
 use std::fmt::Debug;
+use std::io;
 use std::net::{IpAddr, Ipv4Addr};
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use std::str::FromStr;

-pub use nym_client_core::config::Config as BaseConfig;
-pub use nym_client_core::config::MISSING_VALUE;
+pub use nym_client_core::config::Config as BaseClientConfig;
 pub use nym_client_core::config::{DebugConfig, GatewayEndpointConfig};

 pub mod old_config_v1_1_13;
+pub mod old_config_v1_1_20;
+pub mod old_config_v1_1_20_2;
+mod persistence;
 mod template;

-#[derive(Debug, Deserialize, PartialEq, Eq, Serialize, Clone, Copy)]
-#[serde(deny_unknown_fields)]
-pub enum SocketType {
-    WebSocket,
-    None,
+const DEFAULT_CLIENTS_DIR: &str = "clients";
+
+/// Derive default path to clients's config directory.
+/// It should get resolved to `$HOME/.nym/mixnodes/<id>/config`
+pub fn default_config_directory<P: AsRef<Path>>(id: P) -> PathBuf {
+    must_get_home()
+        .join(NYM_DIR)
+        .join(DEFAULT_CLIENTS_DIR)
+        .join(id)
+        .join(DEFAULT_CONFIG_DIR)
 }

-impl SocketType {
-    pub fn from_string<S: Into<String>>(val: S) -> Self {
-        let mut upper = val.into();
-        upper.make_ascii_uppercase();
-        match upper.as_ref() {
-            "WEBSOCKET" | "WS" => SocketType::WebSocket,
-            _ => SocketType::None,
-        }
-    }
-
-    pub fn is_websocket(&self) -> bool {
-        matches!(self, SocketType::WebSocket)
-    }
+/// Derive default path to client's config file.
+/// It should get resolved to `$HOME/.nym/clients/<id>/config/config.toml`
+pub fn default_config_filepath<P: AsRef<Path>>(id: P) -> PathBuf {
+    default_config_directory(id).join(DEFAULT_CONFIG_FILENAME)
 }

-#[derive(Debug, Default, Deserialize, PartialEq, Serialize)]
-#[serde(deny_unknown_fields)]
+/// Derive default path to client's data directory where files, such as keys, are stored.
+/// It should get resolved to `$HOME/.nym/clients/<id>/data`
+pub fn default_data_directory<P: AsRef<Path>>(id: P) -> PathBuf {
+    must_get_home()
+        .join(NYM_DIR)
+        .join(DEFAULT_CLIENTS_DIR)
+        .join(id)
+        .join(DEFAULT_DATA_DIR)
+}
+
+#[derive(Debug, Deserialize, PartialEq, Serialize)]
 pub struct Config {
    #[serde(flatten)]
-    base: BaseConfig<Config>,
+    pub base: BaseClientConfig,

-    socket: Socket,
+    pub socket: Socket,
+
+    // pub paths: CommonClientPathfinder,
+    pub storage_paths: ClientPaths,
+
+    pub logging: LoggingSettings,
 }

-impl NymConfig for Config {
+impl NymConfigTemplate for Config {
    fn template() -> &'static str {
-        config_template()
-    }
-
-    fn default_root_directory() -> PathBuf {
-        dirs::home_dir()
-            .expect("Failed to evaluate $HOME value")
-            .join(".nym")
-            .join("clients")
-    }
-
-    fn try_default_root_directory() -> Option<PathBuf> {
-        dirs::home_dir().map(|path| path.join(".nym").join("clients"))
-    }
-
-    fn root_directory(&self) -> PathBuf {
-        self.base.get_nym_root_directory()
-    }
-
-    fn config_directory(&self) -> PathBuf {
-        self.root_directory()
-            .join(self.base.get_id())
-            .join("config")
-    }
-
-    fn data_directory(&self) -> PathBuf {
-        self.root_directory().join(self.base.get_id()).join("data")
-    }
-}
-
-impl ClientCoreConfigTrait for Config {
-    fn get_gateway_endpoint(&self) -> &nym_client_core::config::GatewayEndpointConfig {
-        self.base.get_gateway_endpoint()
+        CONFIG_TEMPLATE
    }
 }

 impl Config {
-    pub fn new<S: Into<String>>(id: S) -> Self {
+    pub fn new<S: AsRef<str>>(id: S) -> Self {
        Config {
-            base: BaseConfig::new(id),
+            base: BaseClientConfig::new(id.as_ref()),
+            storage_paths: ClientPaths::new_default(default_data_directory(id.as_ref())),
+            logging: Default::default(),
            socket: Default::default(),
        }
    }

+    pub fn read_from_toml_file<P: AsRef<Path>>(path: P) -> io::Result<Self> {
+        read_config_from_toml_file(path)
+    }
+
+    pub fn read_from_default_path<P: AsRef<Path>>(id: P) -> io::Result<Self> {
+        Self::read_from_toml_file(default_config_filepath(id))
+    }
+
+    pub fn default_location(&self) -> PathBuf {
+        default_config_filepath(&self.base.client.id)
+    }
+
+    pub fn save_to_default_location(&self) -> io::Result<()> {
+        let config_save_location: PathBuf = self.default_location();
+        save_formatted_config_to_file(self, config_save_location)
+    }
+
    pub fn validate(&self) -> bool {
        // no other sections have explicit requirements (yet)
        self.base.validate()
@@ -123,39 +128,10 @@ impl Config {
        self
    }

-    // getters
-    pub fn get_config_file_save_location(&self) -> PathBuf {
-        self.config_directory().join(Self::config_file_name())
-    }
-
-    pub fn get_base(&self) -> &BaseConfig<Self> {
-        &self.base
-    }
-
-    pub fn get_base_mut(&mut self) -> &mut BaseConfig<Self> {
-        &mut self.base
-    }
-
-    pub fn get_debug_settings(&self) -> &DebugConfig {
-        self.get_base().get_debug_config()
-    }
-
-    pub fn get_socket_type(&self) -> SocketType {
-        self.socket.socket_type
-    }
-
-    pub fn get_listening_ip(&self) -> IpAddr {
-        self.socket.host
-    }
-
-    pub fn get_listening_port(&self) -> u16 {
-        self.socket.listening_port
-    }
-
    // poor man's 'builder' method
    pub fn with_base<F, T>(mut self, f: F, val: T) -> Self
    where
-        F: Fn(BaseConfig<Self>, T) -> BaseConfig<Self>,
+        F: Fn(BaseClientConfig, T) -> BaseClientConfig,
    {
        self.base = f(self.base, val);
        self
@@ -165,7 +141,7 @@ impl Config {
    // (plz, lets refactor it)
    pub fn with_optional_ext<F, T>(mut self, f: F, val: Option<T>) -> Self
    where
-        F: Fn(BaseConfig<Self>, T) -> BaseConfig<Self>,
+        F: Fn(BaseClientConfig, T) -> BaseClientConfig,
    {
        self.base = self.base.with_optional(f, val);
        self
@@ -173,7 +149,7 @@ impl Config {

    pub fn with_optional_env_ext<F, T>(mut self, f: F, val: Option<T>, env_var: &str) -> Self
    where
-        F: Fn(BaseConfig<Self>, T) -> BaseConfig<Self>,
+        F: Fn(BaseClientConfig, T) -> BaseClientConfig,
        T: FromStr,
        <T as FromStr>::Err: Debug,
    {
@@ -189,7 +165,7 @@ impl Config {
        parser: G,
    ) -> Self
    where
-        F: Fn(BaseConfig<Self>, T) -> BaseConfig<Self>,
+        F: Fn(BaseClientConfig, T) -> BaseClientConfig,
        G: Fn(&str) -> T,
    {
        self.base = self.base.with_optional_custom_env(f, val, env_var, parser);
@@ -197,19 +173,34 @@ impl Config {
    }
 }

+// define_optional_set_inner!(Config, base, BaseClientConfig);
+
+#[derive(Debug, Deserialize, PartialEq, Eq, Serialize, Clone, Copy)]
+#[serde(deny_unknown_fields)]
+pub enum SocketType {
+    WebSocket,
+    None,
+}
+
+impl SocketType {
+    pub fn is_websocket(&self) -> bool {
+        matches!(self, SocketType::WebSocket)
+    }
+}
+
 #[derive(Debug, Deserialize, PartialEq, Eq, Serialize)]
 #[serde(default, deny_unknown_fields)]
 pub struct Socket {
-    socket_type: SocketType,
-    host: IpAddr,
-    listening_port: u16,
+    pub socket_type: SocketType,
+    pub host: IpAddr,
+    pub listening_port: u16,
 }

 impl Default for Socket {
    fn default() -> Self {
        Socket {
            socket_type: SocketType::WebSocket,
-            host: IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)),
+            host: IpAddr::V4(Ipv4Addr::LOCALHOST),
            listening_port: DEFAULT_WEBSOCKET_LISTENING_PORT,
        }
    }
@@ -1,58 +1,33 @@
 // Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use crate::client::config::{Config, Socket};
+use crate::client::config::old_config_v1_1_20::{ConfigV1_1_20, SocketV1_1_20};
 use nym_client_core::config::old_config_v1_1_13::OldConfigV1_1_13 as OldBaseConfigV1_1_13;
-use nym_config::NymConfig;
+use nym_config::legacy_helpers::nym_config::MigrationNymConfig;
 use serde::{Deserialize, Serialize};
 use std::path::PathBuf;

-#[derive(Debug, Default, Deserialize, PartialEq, Serialize)]
+#[derive(Debug, Deserialize, PartialEq, Serialize)]
 #[serde(deny_unknown_fields)]
 pub struct OldConfigV1_1_13 {
    #[serde(flatten)]
-    base: OldBaseConfigV1_1_13<OldConfigV1_1_13>,
+    pub base: OldBaseConfigV1_1_13<OldConfigV1_1_13>,

-    socket: Socket,
+    pub socket: SocketV1_1_20,
 }

-impl NymConfig for OldConfigV1_1_13 {
-    fn template() -> &'static str {
-        // not intended to be used
-        unimplemented!()
-    }
-
+impl MigrationNymConfig for OldConfigV1_1_13 {
    fn default_root_directory() -> PathBuf {
        dirs::home_dir()
            .expect("Failed to evaluate $HOME value")
            .join(".nym")
            .join("clients")
    }
-
-    fn try_default_root_directory() -> Option<PathBuf> {
-        dirs::home_dir().map(|path| path.join(".nym").join("clients"))
-    }
-
-    fn root_directory(&self) -> PathBuf {
-        self.base.client.nym_root_directory.clone()
-    }
-
-    fn config_directory(&self) -> PathBuf {
-        self.root_directory()
-            .join(&self.base.client.id)
-            .join("config")
-    }
-
-    fn data_directory(&self) -> PathBuf {
-        self.root_directory()
-            .join(&self.base.client.id)
-            .join("data")
-    }
 }

-impl From<OldConfigV1_1_13> for Config {
+impl From<OldConfigV1_1_13> for ConfigV1_1_20 {
    fn from(value: OldConfigV1_1_13) -> Self {
-        Config {
+        ConfigV1_1_20 {
            base: value.base.into(),
            socket: value.socket,
        }
@@ -0,0 +1,115 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::client::config::old_config_v1_1_20_2::{
+    ClientPathsV1_1_20_2, ConfigV1_1_20_2, SocketTypeV1_1_20_2, SocketV1_1_20_2,
+};
+use nym_bin_common::logging::LoggingSettings;
+use nym_client_core::config::disk_persistence::keys_paths::ClientKeysPaths;
+use nym_client_core::config::disk_persistence::old_v1_1_20_2::CommonClientPathsV1_1_20_2;
+use nym_client_core::config::old_config_v1_1_20::ConfigV1_1_20 as BaseConfigV1_1_20;
+use nym_client_core::config::old_config_v1_1_20_2::{
+    ClientV1_1_20_2, ConfigV1_1_20_2 as BaseConfigV1_1_20_2,
+};
+use nym_config::defaults::DEFAULT_WEBSOCKET_LISTENING_PORT;
+use nym_config::legacy_helpers::nym_config::MigrationNymConfig;
+use serde::{Deserialize, Serialize};
+use std::fmt::Debug;
+use std::net::{IpAddr, Ipv4Addr};
+use std::path::PathBuf;
+
+#[derive(Debug, Deserialize, PartialEq, Eq, Serialize, Clone, Copy)]
+#[serde(deny_unknown_fields)]
+pub enum SocketTypeV1_1_20 {
+    WebSocket,
+    None,
+}
+
+impl From<SocketTypeV1_1_20> for SocketTypeV1_1_20_2 {
+    fn from(value: SocketTypeV1_1_20) -> Self {
+        match value {
+            SocketTypeV1_1_20::WebSocket => SocketTypeV1_1_20_2::WebSocket,
+            SocketTypeV1_1_20::None => SocketTypeV1_1_20_2::None,
+        }
+    }
+}
+
+#[derive(Debug, Deserialize, PartialEq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct ConfigV1_1_20 {
+    #[serde(flatten)]
+    pub base: BaseConfigV1_1_20<ConfigV1_1_20>,
+
+    pub socket: SocketV1_1_20,
+}
+
+impl From<ConfigV1_1_20> for ConfigV1_1_20_2 {
+    fn from(value: ConfigV1_1_20) -> Self {
+        ConfigV1_1_20_2 {
+            base: BaseConfigV1_1_20_2 {
+                client: ClientV1_1_20_2 {
+                    version: value.base.client.version,
+                    id: value.base.client.id,
+                    disabled_credentials_mode: value.base.client.disabled_credentials_mode,
+                    nyxd_urls: value.base.client.nyxd_urls,
+                    nym_api_urls: value.base.client.nym_api_urls,
+                    gateway_endpoint: value.base.client.gateway_endpoint.into(),
+                },
+                debug: value.base.debug.into(),
+            },
+            socket: value.socket.into(),
+            storage_paths: ClientPathsV1_1_20_2 {
+                common_paths: CommonClientPathsV1_1_20_2 {
+                    keys: ClientKeysPaths {
+                        private_identity_key_file: value.base.client.private_identity_key_file,
+                        public_identity_key_file: value.base.client.public_identity_key_file,
+                        private_encryption_key_file: value.base.client.private_encryption_key_file,
+                        public_encryption_key_file: value.base.client.public_encryption_key_file,
+                        gateway_shared_key_file: value.base.client.gateway_shared_key_file,
+                        ack_key_file: value.base.client.ack_key_file,
+                    },
+                    credentials_database: value.base.client.database_path,
+                    reply_surb_database: value.base.client.reply_surb_database_path,
+                },
+            },
+            logging: LoggingSettings::default(),
+        }
+    }
+}
+
+impl MigrationNymConfig for ConfigV1_1_20 {
+    fn default_root_directory() -> PathBuf {
+        dirs::home_dir()
+            .expect("Failed to evaluate $HOME value")
+            .join(".nym")
+            .join("clients")
+    }
+}
+
+#[derive(Debug, Deserialize, PartialEq, Eq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct SocketV1_1_20 {
+    socket_type: SocketTypeV1_1_20,
+    host: IpAddr,
+    listening_port: u16,
+}
+
+impl From<SocketV1_1_20> for SocketV1_1_20_2 {
+    fn from(value: SocketV1_1_20) -> Self {
+        SocketV1_1_20_2 {
+            socket_type: value.socket_type.into(),
+            host: value.host,
+            listening_port: value.listening_port,
+        }
+    }
+}
+
+impl Default for SocketV1_1_20 {
+    fn default() -> Self {
+        SocketV1_1_20 {
+            socket_type: SocketTypeV1_1_20::WebSocket,
+            host: IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)),
+            listening_port: DEFAULT_WEBSOCKET_LISTENING_PORT,
+        }
+    }
+}
@@ -0,0 +1,103 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::client::config::persistence::ClientPaths;
+use crate::client::config::{default_config_filepath, Config, Socket, SocketType};
+use nym_bin_common::logging::LoggingSettings;
+use nym_client_core::config::disk_persistence::old_v1_1_20_2::CommonClientPathsV1_1_20_2;
+use nym_client_core::config::old_config_v1_1_20_2::ConfigV1_1_20_2 as BaseConfigV1_1_20_2;
+use nym_client_core::config::GatewayEndpointConfig;
+use nym_config::read_config_from_toml_file;
+use nym_network_defaults::DEFAULT_WEBSOCKET_LISTENING_PORT;
+use serde::{Deserialize, Serialize};
+use std::io;
+use std::net::{IpAddr, Ipv4Addr};
+use std::path::Path;
+
+#[derive(Debug, Deserialize, PartialEq, Eq, Serialize, Clone)]
+pub struct ClientPathsV1_1_20_2 {
+    #[serde(flatten)]
+    pub common_paths: CommonClientPathsV1_1_20_2,
+}
+
+#[derive(Debug, Deserialize, PartialEq, Serialize)]
+pub struct ConfigV1_1_20_2 {
+    #[serde(flatten)]
+    pub base: BaseConfigV1_1_20_2,
+
+    pub socket: SocketV1_1_20_2,
+
+    pub storage_paths: ClientPathsV1_1_20_2,
+
+    pub logging: LoggingSettings,
+}
+
+impl ConfigV1_1_20_2 {
+    pub fn read_from_toml_file<P: AsRef<Path>>(path: P) -> io::Result<Self> {
+        read_config_from_toml_file(path)
+    }
+
+    pub fn read_from_default_path<P: AsRef<Path>>(id: P) -> io::Result<Self> {
+        Self::read_from_toml_file(default_config_filepath(id))
+    }
+
+    // in this upgrade, gateway endpoint configuration was moved out of the config file,
+    // so its returned to be stored elsewhere.
+    pub fn upgrade(self) -> (Config, GatewayEndpointConfig) {
+        let gateway_details = self.base.client.gateway_endpoint.clone().into();
+        let config = Config {
+            base: self.base.into(),
+            socket: self.socket.into(),
+            storage_paths: ClientPaths {
+                common_paths: self.storage_paths.common_paths.upgrade_default(),
+            },
+            logging: self.logging,
+        };
+
+        (config, gateway_details)
+    }
+}
+
+#[derive(Debug, Deserialize, PartialEq, Eq, Serialize, Clone, Copy)]
+#[serde(deny_unknown_fields)]
+pub enum SocketTypeV1_1_20_2 {
+    WebSocket,
+    None,
+}
+
+impl From<SocketTypeV1_1_20_2> for SocketType {
+    fn from(value: SocketTypeV1_1_20_2) -> Self {
+        match value {
+            SocketTypeV1_1_20_2::WebSocket => SocketType::WebSocket,
+            SocketTypeV1_1_20_2::None => SocketType::None,
+        }
+    }
+}
+
+#[derive(Debug, Deserialize, PartialEq, Eq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct SocketV1_1_20_2 {
+    pub socket_type: SocketTypeV1_1_20_2,
+    pub host: IpAddr,
+    pub listening_port: u16,
+}
+
+impl From<SocketV1_1_20_2> for Socket {
+    fn from(value: SocketV1_1_20_2) -> Self {
+        Socket {
+            socket_type: value.socket_type.into(),
+            host: value.host,
+            listening_port: value.listening_port,
+        }
+    }
+}
+
+impl Default for SocketV1_1_20_2 {
+    fn default() -> Self {
+        SocketV1_1_20_2 {
+            socket_type: SocketTypeV1_1_20_2::WebSocket,
+            host: IpAddr::V4(Ipv4Addr::LOCALHOST),
+            listening_port: DEFAULT_WEBSOCKET_LISTENING_PORT,
+        }
+    }
+}
@@ -0,0 +1,20 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use nym_client_core::config::disk_persistence::CommonClientPaths;
+use serde::{Deserialize, Serialize};
+use std::path::Path;
+
+#[derive(Debug, Deserialize, PartialEq, Eq, Serialize, Clone)]
+pub struct ClientPaths {
+    #[serde(flatten)]
+    pub common_paths: CommonClientPaths,
+}
+
+impl ClientPaths {
+    pub fn new_default<P: AsRef<Path>>(base_data_directory: P) -> Self {
+        ClientPaths {
+            common_paths: CommonClientPaths::new_default(base_data_directory),
+        }
+    }
+}
@@ -1,12 +1,11 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-pub(crate) fn config_template() -> &'static str {
-    // While using normal toml marshalling would have been way simpler with less overhead,
-    // I think it's useful to have comments attached to the saved config file to explain behaviour of
-    // particular fields.
-    // Note: any changes to the template must be reflected in the appropriate structs.
-    r#"
+// While using normal toml marshalling would have been way simpler with less overhead,
+// I think it's useful to have comments attached to the saved config file to explain behaviour of
+// particular fields.
+// Note: any changes to the template must be reflected in the appropriate structs.
+pub(crate) const CONFIG_TEMPLATE: &str = r#"
 # This is a TOML config file.
 # For more information, see https://github.com/toml-lang/toml

@@ -37,50 +36,37 @@ nym_api_urls = [
    {{/each}}
 ]

+[storage_paths] 
+
 # Path to file containing private identity key.
-private_identity_key_file = '{{ client.private_identity_key_file }}'
+keys.private_identity_key_file = '{{ storage_paths.keys.private_identity_key_file }}'

 # Path to file containing public identity key.
-public_identity_key_file = '{{ client.public_identity_key_file }}'
+keys.public_identity_key_file = '{{ storage_paths.keys.public_identity_key_file }}'

 # Path to file containing private encryption key.
-private_encryption_key_file = '{{ client.private_encryption_key_file }}'
+keys.private_encryption_key_file = '{{ storage_paths.keys.private_encryption_key_file }}'

 # Path to file containing public encryption key.
-public_encryption_key_file = '{{ client.public_encryption_key_file }}'
-
-# Path to the database containing bandwidth credentials
-database_path = '{{ client.database_path }}'
-
-# Path to the persistent store for received reply surbs, unused encryption keys and used sender tags.
-reply_surb_database_path = '{{ client.reply_surb_database_path }}'
-
-##### additional client config options #####
+keys.public_encryption_key_file = '{{ storage_paths.keys.public_encryption_key_file }}'

 # A gateway specific, optional, base58 stringified shared key used for
 # communication with particular gateway.
-gateway_shared_key_file = '{{ client.gateway_shared_key_file }}'
+keys.gateway_shared_key_file = '{{ storage_paths.keys.gateway_shared_key_file }}'

 # Path to file containing key used for encrypting and decrypting the content of an
 # acknowledgement so that nobody besides the client knows which packet it refers to.
-ack_key_file = '{{ client.ack_key_file }}'
-    
-##### advanced configuration options #####
+keys.ack_key_file = '{{ storage_paths.keys.ack_key_file }}'

-# Absolute path to the home Nym Clients directory.
-nym_root_directory = '{{ client.nym_root_directory }}'
-
-[client.gateway_endpoint]
-# ID of the gateway from which the client should be fetching messages.
-gateway_id = '{{ client.gateway_endpoint.gateway_id }}'
-
-# Address of the gateway owner to which the client should send messages.
-gateway_owner = '{{ client.gateway_endpoint.gateway_owner }}'
-
-# Address of the gateway listener to which all client requests should be sent.
-gateway_listener = '{{ client.gateway_endpoint.gateway_listener }}'
+# Path to the database containing bandwidth credentials
+credentials_database = '{{ storage_paths.credentials_database }}'

+# Path to the persistent store for received reply surbs, unused encryption keys and used sender tags.
+reply_surb_database = '{{ storage_paths.reply_surb_database }}'

+# Path to the file containing information about gateway used by this client,
+# i.e. details such as its public key, owner address or the network information.
+gateway_details = '{{ storage_paths.gateway_details }}'

 ##### socket config options #####

@@ -120,5 +106,5 @@ average_ack_delay = '{{ debug.acknowledgements.average_ack_delay }}'
 [debug.cover_traffic]
 loop_cover_traffic_average_delay = '{{ debug.cover_traffic.loop_cover_traffic_average_delay }}'

-"#
-}
+
+"#;
@@ -1,4 +1,4 @@
-// Copyright 2021-2022 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

 use crate::client::config::Config;
@@ -6,20 +6,17 @@ use crate::error::ClientError;
 use crate::websocket;
 use futures::channel::mpsc;
 use log::*;
-use nym_bandwidth_controller::BandwidthController;
-use nym_client_core::client::base_client::non_wasm_helpers::create_bandwidth_controller;
+use nym_client_core::client::base_client::non_wasm_helpers::default_query_dkg_client_from_config;
 use nym_client_core::client::base_client::storage::OnDiskPersistent;
 use nym_client_core::client::base_client::{
-    non_wasm_helpers, BaseClientBuilder, ClientInput, ClientOutput, ClientState,
+    BaseClientBuilder, ClientInput, ClientOutput, ClientState,
 };
 use nym_client_core::client::inbound_messages::InputMessage;
-use nym_client_core::client::key_manager::persistence::OnDiskKeys;
 use nym_client_core::client::received_buffer::{
    ReceivedBufferMessage, ReceivedBufferRequestSender, ReconstructedMessagesReceiver,
 };
-use nym_client_core::config::persistence::key_pathfinder::ClientKeyPathfinder;
-use nym_credential_storage::persistent_storage::PersistentStorage;
 use nym_sphinx::anonymous_replies::requests::AnonymousSenderTag;
+use nym_sphinx::params::PacketType;
 use nym_task::connections::TransmissionLane;
 use nym_task::TaskManager;
 use nym_validator_client::nyxd::QueryNyxdClient;
@@ -45,17 +42,6 @@ impl SocketClient {
        SocketClient { config }
    }

-    async fn create_bandwidth_controller(
-        config: &Config,
-    ) -> BandwidthController<Client<QueryNyxdClient>, PersistentStorage> {
-        let storage = nym_credential_storage::initialise_persistent_storage(
-            config.get_base().get_database_path(),
-        )
-        .await;
-
-        create_bandwidth_controller(config.get_base(), storage)
-    }
-
    fn start_websocket_listener(
        config: &Config,
        client_input: ClientInput,
@@ -63,6 +49,7 @@ impl SocketClient {
        client_state: ClientState,
        self_address: &Recipient,
        shutdown: nym_task::TaskClient,
+        packet_type: PacketType,
    ) {
        info!("Starting websocket listener...");

@@ -88,9 +75,10 @@ impl SocketClient {
            self_address,
            shared_lane_queue_lengths,
            reply_controller_sender,
+            Some(packet_type),
        );

-        websocket::Listener::new(config.get_listening_ip(), config.get_listening_port())
+        websocket::Listener::new(config.socket.host, config.socket.listening_port)
            .start(websocket_handler, shutdown);
    }

@@ -103,40 +91,37 @@ impl SocketClient {
        res
    }

-    fn key_store(&self) -> OnDiskKeys {
-        let pathfinder = ClientKeyPathfinder::new_from_config(self.config.get_base());
-        OnDiskKeys::new(pathfinder)
+    async fn initialise_storage(&self) -> Result<OnDiskPersistent, ClientError> {
+        Ok(OnDiskPersistent::from_paths(
+            self.config.storage_paths.common_paths.clone(),
+            &self.config.base.debug,
+        )
+        .await?)
    }

    // TODO: see if this could also be shared with socks5 client / nym-sdk maybe
    async fn create_base_client_builder(&self) -> Result<NativeClientBuilder, ClientError> {
-        // don't create bandwidth controller if credentials are disabled
-        let bandwidth_controller = if self.config.get_base().get_disabled_credentials_mode() {
+        // don't create dkg client for the bandwidth controller if credentials are disabled
+        let dkg_query_client = if self.config.base.client.disabled_credentials_mode {
            None
        } else {
-            Some(Self::create_bandwidth_controller(&self.config).await)
+            Some(default_query_dkg_client_from_config(&self.config.base))
        };

-        let base_client = BaseClientBuilder::new_from_base_config(
-            self.config.get_base(),
-            self.key_store(),
-            bandwidth_controller,
-            non_wasm_helpers::setup_fs_reply_surb_backend(
-                self.config.get_base().get_reply_surb_database_path(),
-                &self.config.get_debug_settings().reply_surbs,
-            )
-            .await?,
-        );
+        let storage = self.initialise_storage().await?;
+
+        let base_client = BaseClientBuilder::new(&self.config.base, storage, dkg_query_client);

        Ok(base_client)
    }

    pub async fn start_socket(self) -> Result<TaskManager, ClientError> {
-        if !self.config.get_socket_type().is_websocket() {
+        if !self.config.socket.socket_type.is_websocket() {
            return Err(ClientError::InvalidSocketMode);
        }

        let base_builder = self.create_base_client_builder().await?;
+        let packet_type = self.config.base.debug.traffic.packet_type;
        let mut started_client = base_builder.start_base().await?;
        let self_address = started_client.address;
        let client_input = started_client.client_input.register_producer();
@@ -150,6 +135,7 @@ impl SocketClient {
            client_state,
            &self_address,
            started_client.task_manager.subscribe(),
+            packet_type,
        );

        info!("Client startup finished!");
@@ -159,11 +145,12 @@ impl SocketClient {
    }

    pub async fn start_direct(self) -> Result<DirectClient, ClientError> {
-        if self.config.get_socket_type().is_websocket() {
+        if self.config.socket.socket_type.is_websocket() {
            return Err(ClientError::InvalidSocketMode);
        }

        let base_builder = self.create_base_client_builder().await?;
+        let packet_type = self.config.base.debug.traffic.packet_type;
        let mut started_client = base_builder.start_base().await?;
        let address = started_client.address;
        let client_input = started_client.client_input.register_producer();
@@ -186,6 +173,7 @@ impl SocketClient {
            reconstructed_receiver,
            address,
            shutdown_notifier: started_client.task_manager,
+            packet_type,
        })
    }
 }
@@ -199,6 +187,7 @@ pub struct DirectClient {

    // we need to keep reference to this guy otherwise things will start dropping
    shutdown_notifier: TaskManager,
+    packet_type: PacketType,
 }

 impl DirectClient {
@@ -219,7 +208,7 @@ impl DirectClient {
    /// well enough in local tests)
    pub async fn send_regular_message(&mut self, recipient: Recipient, message: Vec<u8>) {
        let lane = TransmissionLane::General;
-        let input_msg = InputMessage::new_regular(recipient, message, lane);
+        let input_msg = InputMessage::new_regular(recipient, message, lane, Some(self.packet_type));

        self.client_input
            .input_sender
@@ -238,7 +227,13 @@ impl DirectClient {
        reply_surbs: u32,
    ) {
        let lane = TransmissionLane::General;
-        let input_msg = InputMessage::new_anonymous(recipient, message, reply_surbs, lane);
+        let input_msg = InputMessage::new_anonymous(
+            recipient,
+            message,
+            reply_surbs,
+            lane,
+            Some(self.packet_type),
+        );

        self.client_input
            .input_sender
@@ -252,7 +247,8 @@ impl DirectClient {
    /// well enough in local tests)
    pub async fn send_reply(&mut self, recipient_tag: AnonymousSenderTag, message: Vec<u8>) {
        let lane = TransmissionLane::General;
-        let input_msg = InputMessage::new_reply(recipient_tag, message, lane);
+        let input_msg =
+            InputMessage::new_reply(recipient_tag, message, lane, Some(self.packet_type));

        self.client_input
            .input_sender
@@ -1,7 +1,10 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use crate::commands::try_upgrade_v1_1_13_config;
+use crate::client::config::{
+    default_config_directory, default_config_filepath, default_data_directory,
+};
+use crate::commands::try_upgrade_config;
 use crate::{
    client::config::Config,
    commands::{override_config, OverrideConfig},
@@ -9,13 +12,16 @@ use crate::{
 };
 use clap::Args;
 use nym_bin_common::output_format::OutputFormat;
-use nym_config::NymConfig;
-use nym_credential_storage::persistent_storage::PersistentStorage;
+use nym_client_core::client::base_client::storage::gateway_details::OnDiskGatewayDetails;
+use nym_client_core::client::key_manager::persistence::OnDiskKeys;
+use nym_client_core::config::GatewayEndpointConfig;
+use nym_client_core::init::GatewaySetup;
 use nym_crypto::asymmetric::identity;
 use nym_sphinx::addressing::clients::Recipient;
 use serde::Serialize;
 use std::fmt::Display;
 use std::net::IpAddr;
+use std::{fs, io};
 use tap::TapFallible;

 #[derive(Args, Clone)]
@@ -97,15 +103,15 @@ impl From<Init> for OverrideConfig {
 pub struct InitResults {
    #[serde(flatten)]
    client_core: nym_client_core::init::InitResults,
-    client_listening_port: String,
+    client_listening_port: u16,
    client_address: String,
 }

 impl InitResults {
-    fn new(config: &Config, address: &Recipient) -> Self {
+    fn new(config: &Config, address: &Recipient, gateway: &GatewayEndpointConfig) -> Self {
        Self {
-            client_core: nym_client_core::init::InitResults::new(config.get_base(), address),
-            client_listening_port: config.get_listening_port().to_string(),
+            client_core: nym_client_core::init::InitResults::new(&config.base, address, gateway),
+            client_listening_port: config.socket.listening_port,
            client_address: address.to_string(),
        }
    }
@@ -119,18 +125,26 @@ impl Display for InitResults {
    }
 }

+fn init_paths(id: &str) -> io::Result<()> {
+    fs::create_dir_all(default_data_directory(id))?;
+    fs::create_dir_all(default_config_directory(id))
+}
+
 pub(crate) async fn execute(args: &Init) -> Result<(), ClientError> {
    eprintln!("Initialising client...");

    let id = &args.id;

-    let already_init = Config::default_config_file_path(id).exists();
-    if already_init {
+    let already_init = if default_config_filepath(id).exists() {
        // in case we're using old config, try to upgrade it
        // (if we're using the current version, it's a no-op)
-        try_upgrade_v1_1_13_config(id)?;
+        try_upgrade_config(id)?;
        eprintln!("Client \"{id}\" was already initialised before");
-    }
+        true
+    } else {
+        init_paths(id)?;
+        false
+    };

    // Usually you only register with the gateway on the first init, however you can force
    // re-registering if wanted.
@@ -146,45 +160,44 @@ pub(crate) async fn execute(args: &Init) -> Result<(), ClientError> {

    // Attempt to use a user-provided gateway, if possible
    let user_chosen_gateway_id = args.gateway;
+    let gateway_setup = GatewaySetup::new_fresh(
+        user_chosen_gateway_id.map(|id| id.to_base58_string()),
+        Some(args.latency_based_selection),
+    );

    // Load and potentially override config
-    let mut config = override_config(Config::new(id), OverrideConfig::from(args.clone()));
+    let config = override_config(Config::new(id), OverrideConfig::from(args.clone()));

    // Setup gateway by either registering a new one, or creating a new config from the selected
    // one but with keys kept, or reusing the gateway configuration.
-    let gateway = nym_client_core::init::setup_gateway_from_config::<Config, _, PersistentStorage>(
+    let key_store = OnDiskKeys::new(config.storage_paths.common_paths.keys.clone());
+    let details_store =
+        OnDiskGatewayDetails::new(&config.storage_paths.common_paths.gateway_details);
+    let init_details = nym_client_core::init::setup_gateway(
+        &gateway_setup,
+        &key_store,
+        &details_store,
        register_gateway,
-        user_chosen_gateway_id,
-        config.get_base(),
-        args.latency_based_selection,
+        Some(&config.base.client.nym_api_urls),
    )
    .await
    .tap_err(|err| eprintln!("Failed to setup gateway\nError: {err}"))?;

-    config.get_base_mut().set_gateway_endpoint(gateway);
-
-    config.save_to_file(None).tap_err(|_| {
+    let config_save_location = config.default_location();
+    config.save_to_default_location().tap_err(|_| {
        log::error!("Failed to save the config file");
    })?;
+    eprintln!(
+        "Saved configuration file to {}",
+        config_save_location.display()
+    );

-    print_saved_config(&config);
+    let address = init_details.client_address()?;

-    let address = nym_client_core::init::get_client_address_from_stored_keys(config.get_base())?;
-    let init_results = InitResults::new(&config, &address);
+    eprintln!("Client configuration completed.\n");
+
+    let init_results = InitResults::new(&config, &address, &init_details.gateway_details);
    println!("{}", args.output.format(&init_results));

    Ok(())
 }
-
-fn print_saved_config(config: &Config) {
-    let config_save_location = config.get_config_file_save_location();
-    eprintln!("Saved configuration file to {config_save_location:?}");
-    eprintln!("Using gateway: {}", config.get_base().get_gateway_id());
-    log::debug!("Gateway id: {}", config.get_base().get_gateway_id());
-    log::debug!("Gateway owner: {}", config.get_base().get_gateway_owner());
-    log::debug!(
-        "Gateway listener: {}",
-        config.get_base().get_gateway_listener()
-    );
-    eprintln!("Client configuration completed.\n");
-}
@@ -2,14 +2,23 @@
 // SPDX-License-Identifier: Apache-2.0

 use crate::client::config::old_config_v1_1_13::OldConfigV1_1_13;
-use crate::client::config::{BaseConfig, Config};
+use crate::client::config::old_config_v1_1_20::ConfigV1_1_20;
+use crate::client::config::old_config_v1_1_20_2::ConfigV1_1_20_2;
+use crate::client::config::{BaseClientConfig, Config};
+use crate::error::ClientError;
 use clap::CommandFactory;
 use clap::{Parser, Subcommand};
 use lazy_static::lazy_static;
-use log::info;
+use log::{error, info};
 use nym_bin_common::build_information::BinaryBuildInformation;
 use nym_bin_common::completions::{fig_generate, ArgShell};
-use nym_config::{NymConfig, OptionalSet};
+use nym_client_core::client::base_client::storage::gateway_details::{
+    OnDiskGatewayDetails, PersistedGatewayDetails,
+};
+use nym_client_core::client::key_manager::persistence::OnDiskKeys;
+use nym_client_core::config::GatewayEndpointConfig;
+use nym_client_core::error::ClientCoreError;
+use nym_config::OptionalSet;
 use std::error::Error;
 use std::net::IpAddr;

@@ -82,40 +91,151 @@ pub(crate) async fn execute(args: &Cli) -> Result<(), Box<dyn Error + Send + Syn
 pub(crate) fn override_config(config: Config, args: OverrideConfig) -> Config {
    config
        .with_optional(Config::with_disabled_socket, args.disable_socket)
-        .with_base(BaseConfig::with_high_default_traffic_volume, args.fastmode)
-        .with_base(BaseConfig::with_disabled_cover_traffic, args.no_cover)
+        .with_base(
+            BaseClientConfig::with_high_default_traffic_volume,
+            args.fastmode,
+        )
+        .with_base(BaseClientConfig::with_disabled_cover_traffic, args.no_cover)
        .with_optional(Config::with_port, args.port)
        .with_optional(Config::with_host, args.host)
        .with_optional_custom_env_ext(
-            BaseConfig::with_custom_nym_apis,
+            BaseClientConfig::with_custom_nym_apis,
            args.nym_apis,
            nym_network_defaults::var_names::NYM_API,
            nym_config::parse_urls,
        )
        .with_optional_custom_env_ext(
-            BaseConfig::with_custom_nyxd,
+            BaseClientConfig::with_custom_nyxd,
            args.nyxd_urls,
            nym_network_defaults::var_names::NYXD,
            nym_config::parse_urls,
        )
        .with_optional_ext(
-            BaseConfig::with_disabled_credentials,
+            BaseClientConfig::with_disabled_credentials,
            args.enabled_credentials_mode.map(|b| !b),
        )
 }

-fn try_upgrade_v1_1_13_config(id: &str) -> std::io::Result<()> {
-    // explicitly load it as v1.1.13 (which is incompatible with the current, i.e. 1.1.14+)
+fn persist_gateway_details(
+    config: &Config,
+    details: GatewayEndpointConfig,
+) -> Result<(), ClientError> {
+    let details_store =
+        OnDiskGatewayDetails::new(&config.storage_paths.common_paths.gateway_details);
+    let keys_store = OnDiskKeys::new(config.storage_paths.common_paths.keys.clone());
+    let shared_keys = keys_store.ephemeral_load_gateway_keys().map_err(|source| {
+        ClientError::ClientCoreError(ClientCoreError::KeyStoreError {
+            source: Box::new(source),
+        })
+    })?;
+    let persisted_details = PersistedGatewayDetails::new(details, &shared_keys);
+    details_store
+        .store_to_disk(&persisted_details)
+        .map_err(|source| {
+            ClientError::ClientCoreError(ClientCoreError::GatewayDetailsStoreError {
+                source: Box::new(source),
+            })
+        })
+}
+
+fn try_upgrade_v1_1_13_config(id: &str) -> Result<bool, ClientError> {
+    use nym_config::legacy_helpers::nym_config::MigrationNymConfig;
+
+    // explicitly load it as v1.1.13 (which is incompatible with the next step, i.e. 1.1.19)
    let Ok(old_config) = OldConfigV1_1_13::load_from_file(id) else {
        // if we failed to load it, there might have been nothing to upgrade
        // or maybe it was an even older file. in either way. just ignore it and carry on with our day
-        return Ok(());
+        return Ok(false);
    };
    info!("It seems the client is using <= v1.1.13 config template.");
    info!("It is going to get updated to the current specification.");

-    let updated: Config = old_config.into();
-    updated.save_to_file(None)
+    let updated_step1: ConfigV1_1_20 = old_config.into();
+    let updated_step2: ConfigV1_1_20_2 = updated_step1.into();
+    let (updated, gateway_config) = updated_step2.upgrade();
+    persist_gateway_details(&updated, gateway_config)?;
+
+    updated.save_to_default_location()?;
+    Ok(true)
+}
+
+fn try_upgrade_v1_1_20_config(id: &str) -> Result<bool, ClientError> {
+    use nym_config::legacy_helpers::nym_config::MigrationNymConfig;
+
+    // explicitly load it as v1.1.20 (which is incompatible with the current one, i.e. +1.1.21)
+    let Ok(old_config) = ConfigV1_1_20::load_from_file(id) else {
+        // if we failed to load it, there might have been nothing to upgrade
+        // or maybe it was an even older file. in either way. just ignore it and carry on with our day
+        return Ok(false);
+    };
+    info!("It seems the client is using <= v1.1.20 config template.");
+    info!("It is going to get updated to the current specification.");
+
+    let updated_step1: ConfigV1_1_20_2 = old_config.into();
+    let (updated, gateway_config) = updated_step1.upgrade();
+    persist_gateway_details(&updated, gateway_config)?;
+
+    updated.save_to_default_location()?;
+    Ok(true)
+}
+
+fn try_upgrade_v1_1_20_2_config(id: &str) -> Result<bool, ClientError> {
+    // explicitly load it as v1.1.20_2 (which is incompatible with the current one, i.e. +1.1.21)
+    let Ok(old_config) = ConfigV1_1_20_2::read_from_default_path(id) else {
+        // if we failed to load it, there might have been nothing to upgrade
+        // or maybe it was an even older file. in either way. just ignore it and carry on with our day
+        return Ok(false);
+    };
+    info!("It seems the client is using <= v1.1.20_2 config template.");
+    info!("It is going to get updated to the current specification.");
+
+    let (updated, gateway_config) = old_config.upgrade();
+    persist_gateway_details(&updated, gateway_config)?;
+
+    updated.save_to_default_location()?;
+    Ok(true)
+}
+
+fn try_upgrade_config(id: &str) -> Result<(), ClientError> {
+    if try_upgrade_v1_1_13_config(id)? {
+        return Ok(());
+    }
+    if try_upgrade_v1_1_20_config(id)? {
+        return Ok(());
+    }
+    if try_upgrade_v1_1_20_2_config(id)? {
+        return Ok(());
+    }
+
+    Ok(())
+}
+
+fn try_load_current_config(id: &str) -> Result<Config, ClientError> {
+    // try to load the config as is
+    if let Ok(cfg) = Config::read_from_default_path(id) {
+        return if !cfg.validate() {
+            Err(ClientError::ConfigValidationFailure)
+        } else {
+            Ok(cfg)
+        };
+    }
+
+    // we couldn't load it - try upgrading it from older revisions
+    try_upgrade_config(id)?;
+
+    let config = match Config::read_from_default_path(id) {
+        Ok(cfg) => cfg,
+        Err(err) => {
+            error!("Failed to load config for {id}. Are you sure you have run `init` before? (Error was: {err})");
+            return Err(ClientError::FailedToLoadConfig(id.to_string()));
+        }
+    };
+
+    if !config.validate() {
+        return Err(ClientError::ConfigValidationFailure);
+    }
+
+    Ok(config)
 }

 #[cfg(test)]
@@ -1,10 +1,7 @@
 // Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use std::error::Error;
-use std::net::IpAddr;
-
-use crate::commands::try_upgrade_v1_1_13_config;
+use crate::commands::try_load_current_config;
 use crate::{
    client::{config::Config, SocketClient},
    commands::{override_config, OverrideConfig},
@@ -13,8 +10,9 @@ use crate::{
 use clap::Args;
 use log::*;
 use nym_bin_common::version_checker::is_minor_version_compatible;
-use nym_config::NymConfig;
 use nym_crypto::asymmetric::identity;
+use std::error::Error;
+use std::net::IpAddr;

 #[derive(Args, Clone)]
 pub(crate) struct Run {
@@ -82,7 +80,7 @@ impl From<Run> for OverrideConfig {
 // network version. It might do so in the future.
 fn version_check(cfg: &Config) -> bool {
    let binary_version = env!("CARGO_PKG_VERSION");
-    let config_version = cfg.get_base().get_version();
+    let config_version = &cfg.base.client.version;
    if binary_version == config_version {
        true
    } else {
@@ -98,30 +96,10 @@ fn version_check(cfg: &Config) -> bool {
 }

 pub(crate) async fn execute(args: &Run) -> Result<(), Box<dyn Error + Send + Sync>> {
-    let id = &args.id;
+    eprintln!("Starting client {}...", args.id);

-    // in case we're using old config, try to upgrade it
-    // (if we're using the current version, it's a no-op)
-    try_upgrade_v1_1_13_config(id)?;
-
-    let mut config = match Config::load_from_file(id) {
-        Ok(cfg) => cfg,
-        Err(err) => {
-            error!("Failed to load config for {}. Are you sure you have run `init` before? (Error was: {err})", id);
-            return Err(Box::new(ClientError::FailedToLoadConfig(id.to_string())));
-        }
-    };
-
-    if !config.validate() {
-        return Err(Box::new(ClientError::ConfigValidationFailure));
-    }
-
-    let override_config_fields = OverrideConfig::from(args.clone());
-    config = override_config(config, override_config_fields);
-
-    if config.get_base_mut().set_empty_fields_to_defaults() {
-        warn!("some of the core config options were left unset. the default values are going to get used instead.");
-    }
+    let mut config = try_load_current_config(&args.id)?;
+    config = override_config(config, OverrideConfig::from(args.clone()));

    if !version_check(&config) {
        error!("failed the local version check");
@@ -1,42 +1,14 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use crate::client::config::{Config, MISSING_VALUE};
-
-use nym_bin_common::version_checker::Version;
-use nym_config::NymConfig;
-
+use crate::client::config::Config;
+use crate::commands::try_load_current_config;
 use clap::Args;
-use std::fmt::Display;
+use nym_bin_common::version_checker::Version;
 use std::process;

-#[allow(dead_code)]
-fn fail_upgrade<D1: Display, D2: Display>(from_version: D1, to_version: D2) -> ! {
-    print_failed_upgrade(from_version, to_version);
-    process::exit(1)
-}
-
-fn print_start_upgrade<D1: Display, D2: Display>(from: D1, to: D2) {
-    println!("\n==================\nTrying to upgrade client from {from} to {to} ...");
-}
-
-fn print_failed_upgrade<D1: Display, D2: Display>(from: D1, to: D2) {
-    eprintln!("Upgrade from {from} to {to} failed!\n==================\n");
-}
-
-fn print_successful_upgrade<D1: Display, D2: Display>(from: D1, to: D2) {
-    println!("Upgrade from {from} to {to} was successful!\n==================\n");
-}
-
-fn outdated_upgrade(config_version: &Version, package_version: &Version) -> ! {
-    eprintln!(
-        "Cannot perform upgrade from {config_version} to {package_version}. Your version is too old to perform the upgrade.!"
-    );
-    process::exit(1)
-}
-
-fn unsupported_upgrade(current_version: &Version, config_version: &Version) -> ! {
-    eprintln!("Cannot perform upgrade from {config_version} to {current_version}. Please let the developers know about this issue if you expected it to work!");
+fn unimplemented_upgrade(current_version: &Version, config_version: &Version) -> ! {
+    eprintln!("Cannot perform upgrade from {config_version} to {current_version} as it hasn't been implemented yet");
    process::exit(1)
 }

@@ -48,7 +20,7 @@ pub(crate) struct Upgrade {
 }

 fn parse_config_version(config: &Config) -> Version {
-    let version = Version::parse(config.get_base().get_version()).unwrap_or_else(|err| {
+    let version = Version::parse(&config.base.client.version).unwrap_or_else(|err| {
        eprintln!("failed to parse client version! - {err}");
        process::exit(1)
    });
@@ -77,53 +49,14 @@ fn parse_package_version() -> Version {
    version
 }

-fn minor_0_12_upgrade(
-    mut config: Config,
-    _matches: &Upgrade,
-    config_version: &Version,
-    package_version: &Version,
-) -> Config {
-    let to_version = if package_version.major == 0 && package_version.minor == 12 {
-        package_version.clone()
-    } else {
-        Version::new(0, 12, 0)
-    };
-
-    print_start_upgrade(config_version, &to_version);
-
-    config
-        .get_base_mut()
-        .set_custom_version(to_version.to_string().as_ref());
-
-    config.save_to_file(None).unwrap_or_else(|err| {
-        eprintln!("failed to overwrite config file! - {err}");
-        print_failed_upgrade(config_version, &to_version);
-        process::exit(1);
-    });
-
-    print_successful_upgrade(config_version, to_version);
-
-    config
-}
-
-fn do_upgrade(mut config: Config, args: &Upgrade, package_version: &Version) {
-    loop {
-        let config_version = parse_config_version(&config);
-
-        if &config_version == package_version {
-            println!("You're using the most recent version!");
-            return;
-        }
-
-        config = match config_version.major {
-            0 => match config_version.minor {
-                9 | 10 => outdated_upgrade(&config_version, package_version),
-                11 => minor_0_12_upgrade(config, args, &config_version, package_version),
-                _ => unsupported_upgrade(&config_version, package_version),
-            },
-            _ => unsupported_upgrade(&config_version, package_version),
-        }
+fn do_upgrade(config: Config, _args: &Upgrade, package_version: &Version) {
+    let config_version = parse_config_version(&config);
+    if &config_version == package_version {
+        println!("You're using the most recent version!");
+        return;
    }
+
+    unimplemented_upgrade(package_version, &config_version)
 }

 pub(crate) fn execute(args: &Upgrade) {
@@ -131,16 +64,15 @@ pub(crate) fn execute(args: &Upgrade) {

    let id = &args.id;

-    let existing_config = Config::load_from_file(id).unwrap_or_else(|err| {
+    let existing_config = try_load_current_config(id).unwrap_or_else(|err| {
        eprintln!("failed to load existing config file! - {err}");
        process::exit(1)
    });

-    if existing_config.get_base().get_version() == MISSING_VALUE {
+    if existing_config.base.client.version.is_empty() {
        eprintln!("the existing configuration file does not seem to contain version number.");
        process::exit(1);
    }

-    // here be upgrade path to 0.9.X and beyond based on version number from config
    do_upgrade(existing_config, args, &package_version)
 }
@@ -14,6 +14,7 @@ use nym_client_core::client::{
 use nym_client_websocket_requests::{requests::ClientRequest, responses::ServerResponse};
 use nym_sphinx::addressing::clients::Recipient;
 use nym_sphinx::anonymous_replies::requests::AnonymousSenderTag;
+use nym_sphinx::params::PacketType;
 use nym_sphinx::receiver::ReconstructedMessage;
 use nym_task::connections::{
    ConnectionCommand, ConnectionCommandSender, ConnectionId, LaneQueueLengths, TransmissionLane,
@@ -41,6 +42,7 @@ pub(crate) struct HandlerBuilder {
    self_full_address: Recipient,
    lane_queue_lengths: LaneQueueLengths,
    reply_controller_sender: ReplyControllerSender,
+    packet_type: Option<PacketType>,
 }

 impl HandlerBuilder {
@@ -51,6 +53,7 @@ impl HandlerBuilder {
        self_full_address: &Recipient,
        lane_queue_lengths: LaneQueueLengths,
        reply_controller_sender: ReplyControllerSender,
+        packet_type: Option<PacketType>,
    ) -> Self {
        Self {
            msg_input,
@@ -59,6 +62,7 @@ impl HandlerBuilder {
            self_full_address: *self_full_address,
            lane_queue_lengths,
            reply_controller_sender,
+            packet_type,
        }
    }

@@ -73,6 +77,7 @@ impl HandlerBuilder {
            received_response_type: Default::default(),
            lane_queue_lengths: self.lane_queue_lengths.clone(),
            reply_controller_sender: self.reply_controller_sender.clone(),
+            packet_type: self.packet_type,
        }
    }
 }
@@ -86,6 +91,7 @@ pub(crate) struct Handler {
    received_response_type: ReceivedResponseType,
    lane_queue_lengths: LaneQueueLengths,
    reply_controller_sender: ReplyControllerSender,
+    packet_type: Option<PacketType>,
 }

 impl Drop for Handler {
@@ -160,7 +166,7 @@ impl Handler {
        });

        // the ack control is now responsible for chunking, etc.
-        let input_msg = InputMessage::new_regular(recipient, message, lane);
+        let input_msg = InputMessage::new_regular(recipient, message, lane, self.packet_type);
        self.msg_input
            .send(input_msg)
            .await
@@ -191,7 +197,8 @@ impl Handler {
            TransmissionLane::ConnectionId(id)
        });

-        let input_msg = InputMessage::new_anonymous(recipient, message, reply_surbs, lane);
+        let input_msg =
+            InputMessage::new_anonymous(recipient, message, reply_surbs, lane, self.packet_type);
        self.msg_input
            .send(input_msg)
            .await
@@ -218,7 +225,7 @@ impl Handler {
            TransmissionLane::ConnectionId(id)
        });

-        let input_msg = InputMessage::new_reply(recipient_tag, message, lane);
+        let input_msg = InputMessage::new_reply(recipient_tag, message, lane, self.packet_type);
        self.msg_input
            .send(input_msg)
            .await
@@ -1,6 +1,6 @@
 [package]
 name = "nym-socks5-client"
-version = "1.1.20"
+version = "1.1.21"
 authors = ["Dave Hrycyszyn <futurechimp@users.noreply.github.com>"]
 description = "A SOCKS5 localhost proxy that converts incoming messages to Sphinx and sends them to a Nym address"
 edition = "2021"
@@ -1,20 +1,25 @@
 // Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use crate::commands::try_upgrade_v1_1_13_config;
+use crate::commands::try_upgrade_config;
+use crate::config::{
+    default_config_directory, default_config_filepath, default_data_directory, Config,
+};
 use crate::{
    commands::{override_config, OverrideConfig},
    error::Socks5ClientError,
 };
 use clap::Args;
 use nym_bin_common::output_format::OutputFormat;
-use nym_config::NymConfig;
-use nym_credential_storage::persistent_storage::PersistentStorage;
+use nym_client_core::client::base_client::storage::gateway_details::OnDiskGatewayDetails;
+use nym_client_core::client::key_manager::persistence::OnDiskKeys;
+use nym_client_core::config::GatewayEndpointConfig;
+use nym_client_core::init::GatewaySetup;
 use nym_crypto::asymmetric::identity;
-use nym_socks5_client_core::config::Config;
 use nym_sphinx::addressing::clients::Recipient;
 use serde::Serialize;
 use std::fmt::Display;
+use std::{fs, io};
 use tap::TapFallible;

 #[derive(Args, Clone)]
@@ -91,6 +96,7 @@ impl From<Init> for OverrideConfig {
            no_cover: init_config.no_cover,
            nyxd_urls: init_config.nyxd_urls,
            enabled_credentials_mode: init_config.enabled_credentials_mode,
+            outfox: false,
        }
    }
 }
@@ -99,15 +105,19 @@ impl From<Init> for OverrideConfig {
 pub struct InitResults {
    #[serde(flatten)]
    client_core: nym_client_core::init::InitResults,
-    socks5_listening_port: String,
+    socks5_listening_port: u16,
    client_address: String,
 }

 impl InitResults {
-    fn new(config: &Config, address: &Recipient) -> Self {
+    fn new(config: &Config, address: &Recipient, gateway: &GatewayEndpointConfig) -> Self {
        Self {
-            client_core: nym_client_core::init::InitResults::new(config.get_base(), address),
-            socks5_listening_port: config.get_socks5().get_listening_port().to_string(),
+            client_core: nym_client_core::init::InitResults::new(
+                &config.core.base,
+                address,
+                gateway,
+            ),
+            socks5_listening_port: config.core.socks5.listening_port,
            client_address: address.to_string(),
        }
    }
@@ -121,19 +131,27 @@ impl Display for InitResults {
    }
 }

+fn init_paths(id: &str) -> io::Result<()> {
+    fs::create_dir_all(default_data_directory(id))?;
+    fs::create_dir_all(default_config_directory(id))
+}
+
 pub(crate) async fn execute(args: &Init) -> Result<(), Socks5ClientError> {
    eprintln!("Initialising client...");

    let id = &args.id;
    let provider_address = &args.provider;

-    let already_init = Config::default_config_file_path(id).exists();
-    if already_init {
+    let already_init = if default_config_filepath(id).exists() {
        // in case we're using old config, try to upgrade it
        // (if we're using the current version, it's a no-op)
-        try_upgrade_v1_1_13_config(id)?;
+        try_upgrade_config(id)?;
        eprintln!("SOCKS5 client \"{id}\" was already initialised before");
-    }
+        true
+    } else {
+        init_paths(id)?;
+        false
+    };

    // Usually you only register with the gateway on the first init, however you can force
    // re-registering if wanted.
@@ -149,50 +167,47 @@ pub(crate) async fn execute(args: &Init) -> Result<(), Socks5ClientError> {

    // Attempt to use a user-provided gateway, if possible
    let user_chosen_gateway_id = args.gateway;
+    let gateway_setup = GatewaySetup::new_fresh(
+        user_chosen_gateway_id.map(|id| id.to_base58_string()),
+        Some(args.latency_based_selection),
+    );

    // Load and potentially override config
-    let mut config = override_config(
+    let config = override_config(
        Config::new(id, &provider_address.to_string()),
        OverrideConfig::from(args.clone()),
    );

    // Setup gateway by either registering a new one, or creating a new config from the selected
    // one but with keys kept, or reusing the gateway configuration.
-    let gateway = nym_client_core::init::setup_gateway_from_config::<Config, _, PersistentStorage>(
+    let key_store = OnDiskKeys::new(config.storage_paths.common_paths.keys.clone());
+    let details_store =
+        OnDiskGatewayDetails::new(&config.storage_paths.common_paths.gateway_details);
+    let init_details = nym_client_core::init::setup_gateway(
+        &gateway_setup,
+        &key_store,
+        &details_store,
        register_gateway,
-        user_chosen_gateway_id,
-        config.get_base(),
-        args.latency_based_selection,
+        Some(&config.core.base.client.nym_api_urls),
    )
    .await
    .tap_err(|err| eprintln!("Failed to setup gateway\nError: {err}"))?;

-    config.get_base_mut().set_gateway_endpoint(gateway);
-
    // TODO: ask the service provider we specified for its interface version and set it in the config

-    config.save_to_file(None).tap_err(|_| {
+    let config_save_location = config.default_location();
+    config.save_to_default_location().tap_err(|_| {
        log::error!("Failed to save the config file");
    })?;
+    eprintln!(
+        "Saved configuration file to {}",
+        config_save_location.display()
+    );

-    print_saved_config(&config);
+    let address = init_details.client_address()?;

-    let address = nym_client_core::init::get_client_address_from_stored_keys(config.get_base())?;
-    let init_results = InitResults::new(&config, &address);
+    let init_results = InitResults::new(&config, &address, &init_details.gateway_details);
    println!("{}", args.output.format(&init_results));

    Ok(())
 }
-
-fn print_saved_config(config: &Config) {
-    let config_save_location = config.get_config_file_save_location();
-    eprintln!("Saved configuration file to {:?}", config_save_location);
-    eprintln!("Using gateway: {}", config.get_base().get_gateway_id());
-    log::debug!("Gateway id: {}", config.get_base().get_gateway_id());
-    log::debug!("Gateway owner: {}", config.get_base().get_gateway_owner());
-    log::debug!(
-        "Gateway listener: {}",
-        config.get_base().get_gateway_listener()
-    );
-    eprintln!("Client configuration completed.\n");
-}
@@ -1,15 +1,25 @@
 // Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+use crate::config::old_config_v1_1_13::OldConfigV1_1_13;
+use crate::config::old_config_v1_1_20::ConfigV1_1_20;
+use crate::config::old_config_v1_1_20_2::ConfigV1_1_20_2;
+use crate::config::{BaseClientConfig, Config};
+use crate::error::Socks5ClientError;
 use clap::CommandFactory;
 use clap::{Parser, Subcommand};
 use lazy_static::lazy_static;
-use log::info;
+use log::{error, info};
 use nym_bin_common::build_information::BinaryBuildInformation;
 use nym_bin_common::completions::{fig_generate, ArgShell};
-use nym_config::{NymConfig, OptionalSet};
-use nym_socks5_client_core::config::old_config_v1_1_13::OldConfigV1_1_13;
-use nym_socks5_client_core::config::{BaseConfig, Config};
+use nym_client_core::client::base_client::storage::gateway_details::{
+    OnDiskGatewayDetails, PersistedGatewayDetails,
+};
+use nym_client_core::client::key_manager::persistence::OnDiskKeys;
+use nym_client_core::config::GatewayEndpointConfig;
+use nym_client_core::error::ClientCoreError;
+use nym_config::OptionalSet;
+use nym_sphinx::params::PacketType;
 use std::error::Error;

 pub mod init;
@@ -64,6 +74,7 @@ pub(crate) struct OverrideConfig {
    no_cover: bool,
    nyxd_urls: Option<Vec<url::Url>>,
    enabled_credentials_mode: Option<bool>,
+    outfox: bool,
 }

 pub(crate) async fn execute(args: &Cli) -> Result<(), Box<dyn Error + Send + Sync>> {
@@ -80,41 +91,158 @@ pub(crate) async fn execute(args: &Cli) -> Result<(), Box<dyn Error + Send + Syn
 }

 pub(crate) fn override_config(config: Config, args: OverrideConfig) -> Config {
+    let packet_type = if args.outfox {
+        PacketType::Outfox
+    } else {
+        PacketType::Mix
+    };
    config
-        .with_base(BaseConfig::with_high_default_traffic_volume, args.fastmode)
-        .with_base(BaseConfig::with_disabled_cover_traffic, args.no_cover)
+        .with_base(
+            BaseClientConfig::with_high_default_traffic_volume,
+            args.fastmode,
+        )
+        .with_base(BaseClientConfig::with_disabled_cover_traffic, args.no_cover)
+        .with_base(BaseClientConfig::with_packet_type, packet_type)
        .with_optional(Config::with_anonymous_replies, args.use_anonymous_replies)
        .with_optional(Config::with_port, args.port)
-        .with_optional_custom_env_ext(
-            BaseConfig::with_custom_nym_apis,
+        .with_optional_base_custom_env(
+            BaseClientConfig::with_custom_nym_apis,
            args.nym_apis,
            nym_network_defaults::var_names::NYM_API,
            nym_config::parse_urls,
        )
-        .with_optional_custom_env_ext(
-            BaseConfig::with_custom_nyxd,
+        .with_optional_base_custom_env(
+            BaseClientConfig::with_custom_nyxd,
            args.nyxd_urls,
            nym_network_defaults::var_names::NYXD,
            nym_config::parse_urls,
        )
-        .with_optional_ext(
-            BaseConfig::with_disabled_credentials,
+        .with_optional_base(
+            BaseClientConfig::with_disabled_credentials,
            args.enabled_credentials_mode.map(|b| !b),
        )
 }

-fn try_upgrade_v1_1_13_config(id: &str) -> std::io::Result<()> {
-    // explicitly load it as v1.1.13 (which is incompatible with the current, i.e. 1.1.14+)
+fn persist_gateway_details(
+    config: &Config,
+    details: GatewayEndpointConfig,
+) -> Result<(), Socks5ClientError> {
+    let details_store =
+        OnDiskGatewayDetails::new(&config.storage_paths.common_paths.gateway_details);
+    let keys_store = OnDiskKeys::new(config.storage_paths.common_paths.keys.clone());
+    let shared_keys = keys_store.ephemeral_load_gateway_keys().map_err(|source| {
+        Socks5ClientError::ClientCoreError(ClientCoreError::KeyStoreError {
+            source: Box::new(source),
+        })
+    })?;
+    let persisted_details = PersistedGatewayDetails::new(details, &shared_keys);
+    details_store
+        .store_to_disk(&persisted_details)
+        .map_err(|source| {
+            Socks5ClientError::ClientCoreError(ClientCoreError::GatewayDetailsStoreError {
+                source: Box::new(source),
+            })
+        })
+}
+
+fn try_upgrade_v1_1_13_config(id: &str) -> Result<bool, Socks5ClientError> {
+    use nym_config::legacy_helpers::nym_config::MigrationNymConfig;
+
+    // explicitly load it as v1.1.13 (which is incompatible with the next step, i.e. 1.1.19)
    let Ok(old_config) = OldConfigV1_1_13::load_from_file(id) else {
        // if we failed to load it, there might have been nothing to upgrade
        // or maybe it was an even older file. in either way. just ignore it and carry on with our day
-        return Ok(());
+        return Ok(false);
    };
    info!("It seems the client is using <= v1.1.13 config template.");
    info!("It is going to get updated to the current specification.");

-    let updated: Config = old_config.into();
-    updated.save_to_file(None)
+    let updated_step1: ConfigV1_1_20 = old_config.into();
+    let updated_step2: ConfigV1_1_20_2 = updated_step1.into();
+    let (updated, gateway_config) = updated_step2.upgrade();
+    persist_gateway_details(&updated, gateway_config)?;
+
+    updated.save_to_default_location()?;
+    Ok(true)
+}
+
+fn try_upgrade_v1_1_20_config(id: &str) -> Result<bool, Socks5ClientError> {
+    use nym_config::legacy_helpers::nym_config::MigrationNymConfig;
+
+    // explicitly load it as v1.1.20 (which is incompatible with the current one, i.e. +1.1.21)
+    let Ok(old_config) = ConfigV1_1_20::load_from_file(id) else {
+        // if we failed to load it, there might have been nothing to upgrade
+        // or maybe it was an even older file. in either way. just ignore it and carry on with our day
+        return Ok(false);
+    };
+    info!("It seems the client is using <= v1.1.20 config template.");
+    info!("It is going to get updated to the current specification.");
+
+    let updated_step1: ConfigV1_1_20_2 = old_config.into();
+    let (updated, gateway_config) = updated_step1.upgrade();
+    persist_gateway_details(&updated, gateway_config)?;
+
+    updated.save_to_default_location()?;
+    Ok(true)
+}
+
+fn try_upgrade_v1_1_20_2_config(id: &str) -> Result<bool, Socks5ClientError> {
+    // explicitly load it as v1.1.20_2 (which is incompatible with the current one, i.e. +1.1.21)
+    let Ok(old_config) = ConfigV1_1_20_2::read_from_default_path(id) else {
+        // if we failed to load it, there might have been nothing to upgrade
+        // or maybe it was an even older file. in either way. just ignore it and carry on with our day
+        return Ok(false);
+    };
+    info!("It seems the client is using <= v1.1.20_2 config template.");
+    info!("It is going to get updated to the current specification.");
+
+    let (updated, gateway_config) = old_config.upgrade();
+    persist_gateway_details(&updated, gateway_config)?;
+
+    updated.save_to_default_location()?;
+    Ok(true)
+}
+
+fn try_upgrade_config(id: &str) -> Result<(), Socks5ClientError> {
+    if try_upgrade_v1_1_13_config(id)? {
+        return Ok(());
+    }
+    if try_upgrade_v1_1_20_config(id)? {
+        return Ok(());
+    }
+    if try_upgrade_v1_1_20_2_config(id)? {
+        return Ok(());
+    }
+
+    Ok(())
+}
+
+fn try_load_current_config(id: &str) -> Result<Config, Socks5ClientError> {
+    // try to load the config as is
+    if let Ok(cfg) = Config::read_from_default_path(id) {
+        return if !cfg.validate() {
+            Err(Socks5ClientError::ConfigValidationFailure)
+        } else {
+            Ok(cfg)
+        };
+    }
+
+    // we couldn't load it - try upgrading it from older revisions
+    try_upgrade_config(id)?;
+
+    let config = match Config::read_from_default_path(id) {
+        Ok(cfg) => cfg,
+        Err(err) => {
+            error!("Failed to load config for {id}. Are you sure you have run `init` before? (Error was: {err})");
+            return Err(Socks5ClientError::FailedToLoadConfig(id.to_string()));
+        }
+    };
+
+    if !config.validate() {
+        return Err(Socks5ClientError::ConfigValidationFailure);
+    }
+
+    Ok(config)
 }

 #[cfg(test)]
@@ -1,7 +1,8 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use crate::commands::try_upgrade_v1_1_13_config;
+use crate::commands::try_load_current_config;
+use crate::config::Config;
 use crate::{
    commands::{override_config, OverrideConfig},
    error::Socks5ClientError,
@@ -9,9 +10,9 @@ use crate::{
 use clap::Args;
 use log::*;
 use nym_bin_common::version_checker::is_minor_version_compatible;
-use nym_config::NymConfig;
+use nym_client_core::client::base_client::storage::OnDiskPersistent;
 use nym_crypto::asymmetric::identity;
-use nym_socks5_client_core::{config::Config, NymClient};
+use nym_socks5_client_core::NymClient;
 use nym_sphinx::addressing::clients::Recipient;

 #[derive(Args, Clone)]
@@ -20,10 +21,6 @@ pub(crate) struct Run {
    #[clap(long)]
    id: String,

-    /// Custom path to the nym-mixnet-client configuration file
-    #[clap(long)]
-    config: Option<String>,
-
    /// Specifies whether this client is going to use an anonymous sender tag for communication with the service provider.
    /// While this is going to hide its actual address information, it will make the actual communication
    /// slower and consume nearly double the bandwidth as it will require sending reply SURBs.
@@ -67,6 +64,9 @@ pub(crate) struct Run {
    /// with bandwidth credential requirement.
    #[clap(long, hide = true)]
    enabled_credentials_mode: Option<bool>,
+
+    #[clap(long, hide = true, action)]
+    outfox: bool,
 }

 impl From<Run> for OverrideConfig {
@@ -79,6 +79,7 @@ impl From<Run> for OverrideConfig {
            no_cover: run_config.no_cover,
            nyxd_urls: run_config.nyxd_urls,
            enabled_credentials_mode: run_config.enabled_credentials_mode,
+            outfox: run_config.outfox,
        }
    }
 }
@@ -87,13 +88,12 @@ impl From<Run> for OverrideConfig {
 // network version. It might do so in the future.
 fn version_check(cfg: &Config) -> bool {
    let binary_version = env!("CARGO_PKG_VERSION");
-    let config_version = cfg.get_base().get_version();
+    let config_version = &cfg.core.base.client.version;
    if binary_version == config_version {
        true
    } else {
        warn!(
-            "The mixnode binary has different version than what is specified in config file! {} and {}",
-            binary_version, config_version
+            "The socks5-client binary has different version than what is specified in config file! {binary_version} and {config_version}",
        );
        if is_minor_version_compatible(binary_version, config_version) {
            info!("but they are still semver compatible. However, consider running the `upgrade` command");
@@ -106,37 +106,18 @@ fn version_check(cfg: &Config) -> bool {
 }

 pub(crate) async fn execute(args: &Run) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
-    let id = &args.id;
+    eprintln!("Starting client {}...", args.id);

-    // in case we're using old config, try to upgrade it
-    // (if we're using the current version, it's a no-op)
-    try_upgrade_v1_1_13_config(id)?;
-
-    let mut config = match Config::load_from_file(id) {
-        Ok(cfg) => cfg,
-        Err(err) => {
-            error!("Failed to load config for {}. Are you sure you have run `init` before? (Error was: {err})", id);
-            return Err(Box::new(Socks5ClientError::FailedToLoadConfig(
-                id.to_string(),
-            )));
-        }
-    };
-
-    if !config.validate() {
-        return Err(Box::new(Socks5ClientError::ConfigValidationFailure));
-    }
-
-    let override_config_fields = OverrideConfig::from(args.clone());
-    config = override_config(config, override_config_fields);
-
-    if config.get_base_mut().set_empty_fields_to_defaults() {
-        warn!("some of the core config options were left unset. the default values are going to get used instead.");
-    }
+    let mut config = try_load_current_config(&args.id)?;
+    config = override_config(config, OverrideConfig::from(args.clone()));

    if !version_check(&config) {
        error!("failed the local version check");
        return Err(Box::new(Socks5ClientError::FailedLocalVersionCheck));
    }

-    NymClient::new(config).run_forever().await
+    let storage =
+        OnDiskPersistent::from_paths(config.storage_paths.common_paths, &config.core.base.debug)
+            .await?;
+    NymClient::new(config.core, storage).run_forever().await
 }
@@ -1,50 +1,14 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use nym_bin_common::version_checker::Version;
-use nym_config::NymConfig;
-use nym_socks5_client_core::config::{Config, MISSING_VALUE};
-
+use crate::commands::try_load_current_config;
+use crate::config::Config;
 use clap::Args;
-use std::{fmt::Display, process};
+use nym_bin_common::version_checker::Version;
+use std::process;

-#[allow(dead_code)]
-fn fail_upgrade<D1: Display, D2: Display>(from_version: D1, to_version: D2) -> ! {
-    print_failed_upgrade(from_version, to_version);
-    process::exit(1)
-}
-
-fn print_start_upgrade<D1: Display, D2: Display>(from: D1, to: D2) {
-    println!(
-        "\n==================\nTrying to upgrade client from {} to {} ...",
-        from, to
-    );
-}
-
-fn print_failed_upgrade<D1: Display, D2: Display>(from: D1, to: D2) {
-    eprintln!(
-        "Upgrade from {} to {} failed!\n==================\n",
-        from, to
-    );
-}
-
-fn print_successful_upgrade<D1: Display, D2: Display>(from: D1, to: D2) {
-    println!(
-        "Upgrade from {} to {} was successful!\n==================\n",
-        from, to
-    );
-}
-
-fn outdated_upgrade(config_version: &Version, package_version: &Version) -> ! {
-    eprintln!(
-        "Cannot perform upgrade from {} to {}. Your version is too old to perform the upgrade.!",
-        config_version, package_version
-    );
-    process::exit(1)
-}
-
-fn unsupported_upgrade(current_version: &Version, config_version: &Version) -> ! {
-    eprintln!("Cannot perform upgrade from {} to {}. Please let the developers know about this issue if you expected it to work!", config_version, current_version);
+fn unimplemented_upgrade(current_version: &Version, config_version: &Version) -> ! {
+    eprintln!("Cannot perform upgrade from {config_version} to {current_version} as it hasn't been implemented yet");
    process::exit(1)
 }

@@ -56,15 +20,14 @@ pub(crate) struct Upgrade {
 }

 fn parse_config_version(config: &Config) -> Version {
-    let version = Version::parse(config.get_base().get_version()).unwrap_or_else(|err| {
+    let version = Version::parse(&config.core.base.client.version).unwrap_or_else(|err| {
        eprintln!("failed to parse client version! - {err}");
        process::exit(1)
    });

    if version.is_prerelease() || !version.build.is_empty() {
        eprintln!(
-            "Trying to upgrade from a non-released version {}. This is not supported!",
-            version
+            "Trying to upgrade from a non-released version {version}. This is not supported!"
        );
        process::exit(1)
    }
@@ -79,63 +42,21 @@ fn parse_package_version() -> Version {
    // however, we are not using them ourselves at the moment and hence it should be fine.
    // if we change our mind, we could easily tweak this code
    if version.is_prerelease() || !version.build.is_empty() {
-        eprintln!(
-            "Trying to upgrade to a non-released version {}. This is not supported!",
-            version
-        );
+        eprintln!("Trying to upgrade to a non-released version {version}. This is not supported!");
        process::exit(1)
    }

    version
 }

-fn minor_0_12_upgrade(
-    mut config: Config,
-    _args: &Upgrade,
-    config_version: &Version,
-    package_version: &Version,
-) -> Config {
-    let to_version = if package_version.major == 0 && package_version.minor == 12 {
-        package_version.clone()
-    } else {
-        Version::new(0, 12, 0)
-    };
-
-    print_start_upgrade(config_version, &to_version);
-
-    config
-        .get_base_mut()
-        .set_custom_version(to_version.to_string().as_ref());
-
-    config.save_to_file(None).unwrap_or_else(|err| {
-        eprintln!("failed to overwrite config file! - {err}");
-        print_failed_upgrade(config_version, &to_version);
-        process::exit(1);
-    });
-
-    print_successful_upgrade(config_version, to_version);
-
-    config
-}
-
-fn do_upgrade(mut config: Config, args: &Upgrade, package_version: &Version) {
-    loop {
-        let config_version = parse_config_version(&config);
-
-        if &config_version == package_version {
-            println!("You're using the most recent version!");
-            return;
-        }
-
-        config = match config_version.major {
-            0 => match config_version.minor {
-                9 | 10 => outdated_upgrade(&config_version, package_version),
-                11 => minor_0_12_upgrade(config, args, &config_version, package_version),
-                _ => unsupported_upgrade(&config_version, package_version),
-            },
-            _ => unsupported_upgrade(&config_version, package_version),
-        }
+fn do_upgrade(config: Config, _args: &Upgrade, package_version: &Version) {
+    let config_version = parse_config_version(&config);
+    if &config_version == package_version {
+        println!("You're using the most recent version!");
+        return;
    }
+
+    unimplemented_upgrade(package_version, &config_version)
 }

 pub(crate) fn execute(args: &Upgrade) {
@@ -143,16 +64,15 @@ pub(crate) fn execute(args: &Upgrade) {

    let id = &args.id;

-    let existing_config = Config::load_from_file(id).unwrap_or_else(|err| {
+    let existing_config = try_load_current_config(id).unwrap_or_else(|err| {
        eprintln!("failed to load existing config file! - {err}");
        process::exit(1)
    });

-    if existing_config.get_base().get_version() == MISSING_VALUE {
+    if existing_config.core.base.client.version.is_empty() {
        eprintln!("the existing configuration file does not seem to contain version number.");
        process::exit(1);
    }

-    // here be upgrade path to 0.9.X and beyond based on version number from config
    do_upgrade(existing_config, args, &package_version)
 }
@@ -0,0 +1,156 @@
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::config::persistence::SocksClientPaths;
+use crate::config::template::CONFIG_TEMPLATE;
+use nym_bin_common::logging::LoggingSettings;
+use nym_config::{
+    must_get_home, read_config_from_toml_file, save_formatted_config_to_file, NymConfigTemplate,
+    DEFAULT_CONFIG_DIR, DEFAULT_CONFIG_FILENAME, DEFAULT_DATA_DIR, NYM_DIR,
+};
+use serde::{Deserialize, Serialize};
+use std::fmt::Debug;
+use std::io;
+use std::path::{Path, PathBuf};
+use std::str::FromStr;
+
+pub use nym_client_core::config::Config as BaseClientConfig;
+pub use nym_socks5_client_core::config::Config as CoreConfig;
+
+pub mod old_config_v1_1_13;
+pub mod old_config_v1_1_20;
+pub mod old_config_v1_1_20_2;
+mod persistence;
+mod template;
+
+const DEFAULT_SOCKS5_CLIENTS_DIR: &str = "socks5-clients";
+
+/// Derive default path to clients's config directory.
+/// It should get resolved to `$HOME/.nym/socks5-clients/<id>/config`
+pub fn default_config_directory<P: AsRef<Path>>(id: P) -> PathBuf {
+    must_get_home()
+        .join(NYM_DIR)
+        .join(DEFAULT_SOCKS5_CLIENTS_DIR)
+        .join(id)
+        .join(DEFAULT_CONFIG_DIR)
+}
+
+/// Derive default path to client's config file.
+/// It should get resolved to `$HOME/.nym/socks5-clients/<id>/config/config.toml`
+pub fn default_config_filepath<P: AsRef<Path>>(id: P) -> PathBuf {
+    default_config_directory(id).join(DEFAULT_CONFIG_FILENAME)
+}
+
+/// Derive default path to client's data directory where files, such as keys, are stored.
+/// It should get resolved to `$HOME/.nym/socks5-clients/<id>/data`
+pub fn default_data_directory<P: AsRef<Path>>(id: P) -> PathBuf {
+    must_get_home()
+        .join(NYM_DIR)
+        .join(DEFAULT_SOCKS5_CLIENTS_DIR)
+        .join(id)
+        .join(DEFAULT_DATA_DIR)
+}
+
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct Config {
+    pub core: CoreConfig,
+
+    pub storage_paths: SocksClientPaths,
+
+    pub logging: LoggingSettings,
+}
+
+impl NymConfigTemplate for Config {
+    fn template() -> &'static str {
+        CONFIG_TEMPLATE
+    }
+}
+
+impl Config {
+    pub fn new<S: AsRef<str>>(id: S, provider_mix_address: S) -> Self {
+        Config {
+            core: CoreConfig::new(id.as_ref(), provider_mix_address.as_ref()),
+            storage_paths: SocksClientPaths::new_default(default_data_directory(id.as_ref())),
+            logging: Default::default(),
+        }
+    }
+
+    pub fn read_from_toml_file<P: AsRef<Path>>(path: P) -> io::Result<Self> {
+        read_config_from_toml_file(path)
+    }
+
+    pub fn read_from_default_path<P: AsRef<Path>>(id: P) -> io::Result<Self> {
+        Self::read_from_toml_file(default_config_filepath(id))
+    }
+
+    pub fn default_location(&self) -> PathBuf {
+        default_config_filepath(&self.core.base.client.id)
+    }
+
+    pub fn save_to_default_location(&self) -> io::Result<()> {
+        let config_save_location: PathBuf = self.default_location();
+        save_formatted_config_to_file(self, config_save_location)
+    }
+
+    pub fn validate(&self) -> bool {
+        // no other sections have explicit requirements (yet)
+        self.core.validate()
+    }
+
+    pub fn with_port(mut self, port: u16) -> Self {
+        self.core.socks5.listening_port = port;
+        self
+    }
+
+    pub fn with_anonymous_replies(mut self, anonymous_replies: bool) -> Self {
+        self.core.socks5.send_anonymously = anonymous_replies;
+        self
+    }
+
+    // poor man's 'builder' method
+
+    pub fn with_base<F, T>(mut self, f: F, val: T) -> Self
+    where
+        F: Fn(BaseClientConfig, T) -> BaseClientConfig,
+    {
+        self.core = self.core.with_base(f, val);
+        self
+    }
+
+    pub fn with_optional_base<F, T>(mut self, f: F, val: Option<T>) -> Self
+    where
+        F: Fn(BaseClientConfig, T) -> BaseClientConfig,
+    {
+        self.core = self.core.with_optional_base(f, val);
+        self
+    }
+
+    #[allow(unused)]
+    pub fn with_optional_base_env<F, T>(mut self, f: F, val: Option<T>, env_var: &str) -> Self
+    where
+        F: Fn(BaseClientConfig, T) -> BaseClientConfig,
+        T: FromStr,
+        <T as FromStr>::Err: Debug,
+    {
+        self.core = self.core.with_optional_base_env(f, val, env_var);
+        self
+    }
+
+    pub fn with_optional_base_custom_env<F, T, G>(
+        mut self,
+        f: F,
+        val: Option<T>,
+        env_var: &str,
+        parser: G,
+    ) -> Self
+    where
+        F: Fn(BaseClientConfig, T) -> BaseClientConfig,
+        G: Fn(&str) -> T,
+    {
+        self.core = self
+            .core
+            .with_optional_base_custom_env(f, val, env_var, parser);
+        self
+    }
+}
@@ -0,0 +1,38 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::config::old_config_v1_1_20::{ConfigV1_1_20, Socks5V1_1_20};
+use nym_client_core::config::old_config_v1_1_13::OldConfigV1_1_13 as OldBaseConfigV1_1_13;
+use nym_config::legacy_helpers::nym_config::MigrationNymConfig;
+use nym_config::must_get_home;
+use serde::{Deserialize, Serialize};
+use std::path::PathBuf;
+
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct OldConfigV1_1_13 {
+    #[serde(flatten)]
+    pub base: OldBaseConfigV1_1_13<OldConfigV1_1_13>,
+
+    pub socks5: Socks5V1_1_20,
+}
+
+impl MigrationNymConfig for OldConfigV1_1_13 {
+    fn default_root_directory() -> PathBuf {
+        #[cfg(not(any(target_os = "android", target_os = "ios")))]
+        let base_dir = must_get_home();
+        #[cfg(any(target_os = "android", target_os = "ios"))]
+        let base_dir = PathBuf::from("/tmp");
+
+        base_dir.join(".nym").join("socks5-clients")
+    }
+}
+
+impl From<OldConfigV1_1_13> for ConfigV1_1_20 {
+    fn from(value: OldConfigV1_1_13) -> Self {
+        ConfigV1_1_20 {
+            base: value.base.into(),
+            socks5: value.socks5,
+        }
+    }
+}
@@ -0,0 +1,137 @@
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::config::old_config_v1_1_20_2::{
+    ConfigV1_1_20_2, CoreConfigV1_1_20_2, SocksClientPathsV1_1_20_2,
+};
+use nym_bin_common::logging::LoggingSettings;
+use nym_client_core::config::disk_persistence::keys_paths::ClientKeysPaths;
+use nym_client_core::config::disk_persistence::old_v1_1_20_2::CommonClientPathsV1_1_20_2;
+use nym_client_core::config::old_config_v1_1_20::ConfigV1_1_20 as BaseConfigV1_1_20;
+use nym_client_core::config::old_config_v1_1_20_2::ClientV1_1_20_2;
+use nym_config::legacy_helpers::nym_config::MigrationNymConfig;
+use nym_config::must_get_home;
+use nym_socks5_client_core::config::old_config_v1_1_20_2::{
+    BaseClientConfigV1_1_20_2, Socks5DebugV1_1_20_2, Socks5V1_1_20_2,
+};
+use nym_socks5_client_core::config::{ProviderInterfaceVersion, Socks5ProtocolVersion};
+use serde::{Deserialize, Serialize};
+use std::fmt::Debug;
+use std::path::PathBuf;
+
+const DEFAULT_CONNECTION_START_SURBS: u32 = 20;
+const DEFAULT_PER_REQUEST_SURBS: u32 = 3;
+
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct ConfigV1_1_20 {
+    #[serde(flatten)]
+    pub base: BaseConfigV1_1_20<ConfigV1_1_20>,
+
+    pub socks5: Socks5V1_1_20,
+}
+
+impl From<ConfigV1_1_20> for ConfigV1_1_20_2 {
+    fn from(value: ConfigV1_1_20) -> Self {
+        ConfigV1_1_20_2 {
+            core: CoreConfigV1_1_20_2 {
+                base: BaseClientConfigV1_1_20_2 {
+                    client: ClientV1_1_20_2 {
+                        version: value.base.client.version,
+                        id: value.base.client.id,
+                        disabled_credentials_mode: value.base.client.disabled_credentials_mode,
+                        nyxd_urls: value.base.client.nyxd_urls,
+                        nym_api_urls: value.base.client.nym_api_urls,
+                        gateway_endpoint: value.base.client.gateway_endpoint.into(),
+                    },
+                    debug: value.base.debug.into(),
+                },
+                socks5: value.socks5.into(),
+            },
+            storage_paths: SocksClientPathsV1_1_20_2 {
+                common_paths: CommonClientPathsV1_1_20_2 {
+                    keys: ClientKeysPaths {
+                        private_identity_key_file: value.base.client.private_identity_key_file,
+                        public_identity_key_file: value.base.client.public_identity_key_file,
+                        private_encryption_key_file: value.base.client.private_encryption_key_file,
+                        public_encryption_key_file: value.base.client.public_encryption_key_file,
+                        gateway_shared_key_file: value.base.client.gateway_shared_key_file,
+                        ack_key_file: value.base.client.ack_key_file,
+                    },
+                    credentials_database: value.base.client.database_path,
+                    reply_surb_database: value.base.client.reply_surb_database_path,
+                },
+            },
+            logging: LoggingSettings::default(),
+        }
+    }
+}
+
+impl MigrationNymConfig for ConfigV1_1_20 {
+    fn default_root_directory() -> PathBuf {
+        #[cfg(not(any(target_os = "android", target_os = "ios")))]
+        let base_dir = must_get_home();
+        #[cfg(any(target_os = "android", target_os = "ios"))]
+        let base_dir = PathBuf::from("/tmp");
+
+        base_dir.join(".nym").join("socks5-clients")
+    }
+}
+
+#[derive(Clone, Debug, Deserialize, PartialEq, Eq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct Socks5V1_1_20 {
+    pub listening_port: u16,
+
+    pub provider_mix_address: String,
+
+    #[serde(default = "ProviderInterfaceVersion::new_legacy")]
+    pub provider_interface_version: ProviderInterfaceVersion,
+
+    #[serde(default = "Socks5ProtocolVersion::new_legacy")]
+    pub socks5_protocol_version: Socks5ProtocolVersion,
+
+    #[serde(default)]
+    pub send_anonymously: bool,
+
+    #[serde(default)]
+    pub socks5_debug: Socks5DebugV1_1_20,
+}
+
+impl From<Socks5V1_1_20> for Socks5V1_1_20_2 {
+    fn from(value: Socks5V1_1_20) -> Self {
+        Socks5V1_1_20_2 {
+            listening_port: value.listening_port,
+            provider_mix_address: value.provider_mix_address,
+            provider_interface_version: value.provider_interface_version,
+            socks5_protocol_version: value.socks5_protocol_version,
+            send_anonymously: value.send_anonymously,
+            socks5_debug: value.socks5_debug.into(),
+        }
+    }
+}
+
+#[derive(Clone, Debug, Deserialize, PartialEq, Eq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct Socks5DebugV1_1_20 {
+    connection_start_surbs: u32,
+    per_request_surbs: u32,
+}
+
+impl From<Socks5DebugV1_1_20> for Socks5DebugV1_1_20_2 {
+    fn from(value: Socks5DebugV1_1_20) -> Self {
+        Socks5DebugV1_1_20_2 {
+            connection_start_surbs: value.connection_start_surbs,
+            per_request_surbs: value.per_request_surbs,
+        }
+    }
+}
+
+impl Default for Socks5DebugV1_1_20 {
+    fn default() -> Self {
+        Socks5DebugV1_1_20 {
+            connection_start_surbs: DEFAULT_CONNECTION_START_SURBS,
+            per_request_surbs: DEFAULT_PER_REQUEST_SURBS,
+        }
+    }
+}
@@ -0,0 +1,54 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::config::persistence::SocksClientPaths;
+use crate::config::{default_config_filepath, Config};
+use nym_bin_common::logging::LoggingSettings;
+use nym_client_core::config::disk_persistence::old_v1_1_20_2::CommonClientPathsV1_1_20_2;
+use nym_client_core::config::GatewayEndpointConfig;
+use nym_config::read_config_from_toml_file;
+pub use nym_socks5_client_core::config::old_config_v1_1_20_2::ConfigV1_1_20_2 as CoreConfigV1_1_20_2;
+use serde::{Deserialize, Serialize};
+use std::io;
+use std::path::Path;
+
+#[derive(Debug, Deserialize, PartialEq, Eq, Serialize, Clone)]
+pub struct SocksClientPathsV1_1_20_2 {
+    #[serde(flatten)]
+    pub common_paths: CommonClientPathsV1_1_20_2,
+}
+
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct ConfigV1_1_20_2 {
+    pub core: CoreConfigV1_1_20_2,
+
+    pub storage_paths: SocksClientPathsV1_1_20_2,
+
+    pub logging: LoggingSettings,
+}
+
+impl ConfigV1_1_20_2 {
+    pub fn read_from_toml_file<P: AsRef<Path>>(path: P) -> io::Result<Self> {
+        read_config_from_toml_file(path)
+    }
+
+    pub fn read_from_default_path<P: AsRef<Path>>(id: P) -> io::Result<Self> {
+        Self::read_from_toml_file(default_config_filepath(id))
+    }
+
+    // in this upgrade, gateway endpoint configuration was moved out of the config file,
+    // so its returned to be stored elsewhere.
+    pub fn upgrade(self) -> (Config, GatewayEndpointConfig) {
+        let gateway_details = self.core.base.client.gateway_endpoint.clone().into();
+        let config = Config {
+            core: self.core.into(),
+            storage_paths: SocksClientPaths {
+                common_paths: self.storage_paths.common_paths.upgrade_default(),
+            },
+            logging: self.logging,
+        };
+
+        (config, gateway_details)
+    }
+}
@@ -0,0 +1,20 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use nym_client_core::config::disk_persistence::CommonClientPaths;
+use serde::{Deserialize, Serialize};
+use std::path::Path;
+
+#[derive(Debug, Deserialize, PartialEq, Eq, Serialize, Clone)]
+pub struct SocksClientPaths {
+    #[serde(flatten)]
+    pub common_paths: CommonClientPaths,
+}
+
+impl SocksClientPaths {
+    pub fn new_default<P: AsRef<Path>>(base_data_directory: P) -> Self {
+        SocksClientPaths {
+            common_paths: CommonClientPaths::new_default(base_data_directory),
+        }
+    }
+}
@@ -0,0 +1,114 @@
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+// While using normal toml marshalling would have been way simpler with less overhead,
+// I think it's useful to have comments attached to the saved config file to explain behaviour of
+// particular fields.
+// Note: any changes to the template must be reflected in the appropriate structs.
+pub(crate) const CONFIG_TEMPLATE: &str = r#"
+# This is a TOML config file.
+# For more information, see https://github.com/toml-lang/toml
+
+##### main base client config options #####
+
+[core.client]
+# Version of the client for which this configuration was created.
+version = '{{ core.client.version }}'
+
+# Human readable ID of this particular client.
+id = '{{ core.client.id }}'
+
+# Indicates whether this client is running in a disabled credentials mode, thus attempting
+# to claim bandwidth without presenting bandwidth credentials.
+disabled_credentials_mode = {{ core.client.disabled_credentials_mode }}
+
+# Addresses to nyxd validators via which the client can communicate with the chain.
+nyxd_urls = [
+    {{#each core.client.nyxd_urls }}
+        '{{this}}',
+    {{/each}}
+]
+
+# Addresses to APIs running on validator from which the client gets the view of the network.
+nym_api_urls = [
+    {{#each core.client.nym_api_urls }}
+        '{{this}}',
+    {{/each}}
+]
+
+[storage_paths] 
+
+# Path to file containing private identity key.
+keys.private_identity_key_file = '{{ storage_paths.keys.private_identity_key_file }}'
+
+# Path to file containing public identity key.
+keys.public_identity_key_file = '{{ storage_paths.keys.public_identity_key_file }}'
+
+# Path to file containing private encryption key.
+keys.private_encryption_key_file = '{{ storage_paths.keys.private_encryption_key_file }}'
+
+# Path to file containing public encryption key.
+keys.public_encryption_key_file = '{{ storage_paths.keys.public_encryption_key_file }}'
+
+# A gateway specific, optional, base58 stringified shared key used for
+# communication with particular gateway.
+keys.gateway_shared_key_file = '{{ storage_paths.keys.gateway_shared_key_file }}'
+
+# Path to file containing key used for encrypting and decrypting the content of an
+# acknowledgement so that nobody besides the client knows which packet it refers to.
+keys.ack_key_file = '{{ storage_paths.keys.ack_key_file }}'
+
+# Path to the database containing bandwidth credentials
+credentials_database = '{{ storage_paths.credentials_database }}'
+
+# Path to the persistent store for received reply surbs, unused encryption keys and used sender tags.
+reply_surb_database = '{{ storage_paths.reply_surb_database }}'
+
+# Path to the file containing information about gateway used by this client,
+# i.e. details such as its public key, owner address or the network information.
+gateway_details = '{{ storage_paths.gateway_details }}'
+
+##### socket config options #####
+
+[core.socks5]
+
+# The mix address of the provider to which all requests are going to be sent.
+provider_mix_address = '{{ core.socks5.provider_mix_address }}'
+
+# The port on which the client will be listening for incoming requests
+listening_port = {{ core.socks5.listening_port }}
+
+# Specifies whether this client is going to use an anonymous sender tag for communication with the service provider.
+# While this is going to hide its actual address information, it will make the actual communication
+# slower and consume nearly double the bandwidth as it will require sending reply SURBs.
+#
+# Note that some service providers might not support this.
+send_anonymously = {{ core.socks5.send_anonymously }}
+
+##### logging configuration options #####
+
+[logging]
+
+# TODO
+
+
+##### debug configuration options #####
+# The following options should not be modified unless you know EXACTLY what you are doing
+# as if set incorrectly, they may impact your anonymity.
+
+# [core.socks5.socks5_debug]
+
+
+[core.debug]
+
+[core.debug.traffic]
+average_packet_delay = '{{ core.debug.traffic.average_packet_delay }}'
+message_sending_average_delay = '{{ core.debug.traffic.message_sending_average_delay }}'
+
+[core.debug.acknowledgements]
+average_ack_delay = '{{ core.debug.acknowledgements.average_ack_delay }}'
+
+[core.debug.cover_traffic]
+loop_cover_traffic_average_delay = '{{ core.debug.cover_traffic.loop_cover_traffic_average_delay }}'
+
+"#;
@@ -8,6 +8,7 @@ use nym_bin_common::logging::{maybe_print_banner, setup_logging};
 use nym_network_defaults::setup_env;

 mod commands;
+mod config;
 pub mod error;

 #[tokio::main]
@@ -1,6 +1,5 @@
 /target
 **/*.rs.bk
-Cargo.lock
 bin/
 pkg/
 wasm-pack.log
@@ -106,29 +106,25 @@ function printAndDisplayTestResult(result) {
    });
 }

-function dummyGatewayConfig() {
-    return new GatewayEndpointConfig(
-        '336yuXAeGEgedRfqTJZsG2YV7P13QH1bHv1SjCZYarc9',
-        'n1rqqw8km7a0rvf8lr6k8dsdqvvkyn2mglj7xxfm',
-        'ws://85.159.212.96:9000',
-    )
-}
-
 async function testWithTester() {
-    const gatewayConfig = dummyGatewayConfig();
+    const preferredGateway = "336yuXAeGEgedRfqTJZsG2YV7P13QH1bHv1SjCZYarc9";

    // A) construct with hardcoded topology
    const topology = dummyTopology()
-    const nodeTester = await new NymNodeTester(gatewayConfig, topology);
+    const nodeTester = await new NymNodeTester(topology, preferredGateway);

    // B) first get topology directly from nym-api
    // const validator = 'https://qwerty-validator-api.qa.nymte.ch/api';
    // const topology = await current_network_topology(validator)
-    // const nodeTester = await new NymNodeTester(gatewayConfig, topology);
+    // const nodeTester = await new NymNodeTester(topology, preferredGateway);
    //
    // C) use nym-api in the constructor (note: it does no filtering for 'good' nodes on other layers)
    // const validator = 'https://qwerty-validator-api.qa.nymte.ch/api';
-    // const nodeTester = await NymNodeTester.new_with_api(gatewayConfig, validator)
+    // const nodeTester = await NymNodeTester.new_with_api(validator, preferredGateway)
+
+    // D, E, F) you also don't have to specify the gateway. if you don't, a random one (from your topology) will be used
+    // const topology = dummyTopology()
+    // const nodeTester = await new NymNodeTester(topology);

    self.onmessage = async event => {
        if (event.data && event.data.kind) {
@@ -143,10 +139,44 @@ async function testWithTester() {
            }
        }
    };
+}
+
+async function testerReconnection() {
+    const validator = 'https://qwerty-validator-api.qa.nymte.ch/api';
+    const nodeTester = await NymNodeTester.new_with_api(validator);
+
+    self.onmessage = async event => {
+        if (event.data && event.data.kind) {
+            switch (event.data.kind) {
+                case 'TestPacket': {
+                    const {mixnodeIdentity} = event.data.args;
+                    console.log("starting node test...");
+
+                    let result1 = await nodeTester.test_node(mixnodeIdentity);
+                    console.log("sleeping for 5s");
+                    await new Promise(r => setTimeout(r, 5000));
+                    await nodeTester.disconnect_from_gateway();
+
+                    console.log("sleeping for 5s");
+                    await new Promise(r => setTimeout(r, 5000));
+
+                    await nodeTester.reconnect_to_gateway();
+                    let result2 = await nodeTester.test_node(mixnodeIdentity);
+
+                    printAndDisplayTestResult(result1)
+                    printAndDisplayTestResult(result2)
+                }
+            }
+        }
+    };
+
+
+
+
 }

 async function testWithNymClient() {
-    const gatewayConfig = dummyGatewayConfig();
+    const preferredGateway = "336yuXAeGEgedRfqTJZsG2YV7P13QH1bHv1SjCZYarc9";
    const topology = dummyTopology()

    let received = 0
@@ -168,7 +198,7 @@ async function testWithNymClient() {

    console.log('Instantiating WASM client...');

-    let clientBuilder = NymClientBuilder.new_tester(gatewayConfig, topology, onMessageHandler)
+    let clientBuilder = NymClientBuilder.new_tester(topology, onMessageHandler, preferredGateway)
    console.log('Web worker creating WASM client...');
    let local_client = await clientBuilder.start_client();
    console.log('WASM client running!');
@@ -226,10 +256,10 @@ async function normalNymClientUsage() {

    debug.topology_refresh_rate_ms = BigInt(60000)

-    const gatewayConfig = dummyGatewayConfig();
+    const preferredGateway = "336yuXAeGEgedRfqTJZsG2YV7P13QH1bHv1SjCZYarc9";
    const validator = 'https://qwerty-validator-api.qa.nymte.ch/api';

-    const config = new Config('my-awesome-wasm-client', validator, gatewayConfig, debug);
+    const config = new Config('my-awesome-wasm-client', validator, debug);

    const onMessageHandler = (message) => {
        console.log(message);
@@ -334,6 +364,9 @@ async function main() {
    // sets up better stack traces in case of in-rust panics
    set_panic_hook();

+    // show reconnection capabilities
+    await testerReconnection()
+
    // run test on simplified and dedicated tester:
    // await testWithTester()

@@ -1,4 +1,4 @@
-// Copyright 2022 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2022-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

 // due to expansion of #[wasm_bindgen] macro on `Debug` Config struct
@@ -7,60 +7,49 @@
 #![allow(clippy::drop_copy)]

 use nym_client_core::config::{
-    Acknowledgements as ConfigAcknowledgements, CoverTraffic as ConfigCoverTraffic,
-    DebugConfig as ConfigDebug, GatewayConnection as ConfigGatewayConnection,
-    GatewayEndpointConfig, ReplySurbs as ConfigReplySurbs, Topology as ConfigTopology,
-    Traffic as ConfigTraffic,
+    Acknowledgements as ConfigAcknowledgements, Config as BaseClientConfig,
+    CoverTraffic as ConfigCoverTraffic, DebugConfig as ConfigDebug,
+    GatewayConnection as ConfigGatewayConnection, ReplySurbs as ConfigReplySurbs,
+    Topology as ConfigTopology, Traffic as ConfigTraffic,
 };
-use nym_sphinx::params::PacketSize;
+use nym_sphinx::params::{PacketSize, PacketType};
 use serde::{Deserialize, Serialize};
 use std::time::Duration;
-use url::Url;
 use wasm_bindgen::prelude::*;

 #[wasm_bindgen]
 #[derive(Debug, Deserialize, PartialEq, Serialize)]
 #[serde(deny_unknown_fields)]
 pub struct Config {
-    /// ID specifies the human readable ID of this particular client.
-    pub(crate) id: String,
-
-    pub(crate) nym_api_url: Option<Url>,
-
-    pub(crate) disabled_credentials_mode: bool,
-
-    /// Information regarding how the client should send data to gateway.
-    pub(crate) gateway_endpoint: GatewayEndpointConfig,
-
-    pub(crate) debug: ConfigDebug,
+    pub(crate) base: BaseClientConfig,
 }

 #[wasm_bindgen]
 impl Config {
    #[wasm_bindgen(constructor)]
-    pub fn new(
-        id: String,
-        validator_server: String,
-        gateway_endpoint: GatewayEndpointConfig,
-        debug: Option<Debug>,
-    ) -> Self {
+    pub fn new(id: String, validator_server: String, debug: Option<DebugWasm>) -> Self {
        Config {
-            id,
-            nym_api_url: Some(
-                validator_server
+            base: BaseClientConfig::new(id)
+                .with_custom_nyxd(vec![validator_server
                    .parse()
-                    .expect("provided url was malformed"),
-            ),
-            disabled_credentials_mode: true,
-            gateway_endpoint,
-            debug: debug.map(Into::into).unwrap_or_default(),
+                    .expect("provided url was malformed")])
+                .with_debug_config(debug.map(Into::into).unwrap_or_default()),
+        }
+    }
+
+    pub(crate) fn new_tester_config<S: Into<String>>(id: S) -> Self {
+        Config {
+            base: BaseClientConfig::new(id)
+                .with_disabled_credentials(true)
+                .with_disabled_cover_traffic(true)
+                .with_disabled_topology_refresh(true),
        }
    }
 }

 #[wasm_bindgen]
 #[derive(Debug, Copy, Clone)]
-pub struct Traffic {
+pub struct TrafficWasm {
    /// The parameter of Poisson distribution determining how long, on average,
    /// sent packet is going to be delayed at any given mix node.
    /// So for a packet going through three mix nodes, on average, it will take three times this value
@@ -79,14 +68,23 @@ pub struct Traffic {

    /// Controls whether the sent sphinx packet use the NON-DEFAULT bigger size.
    pub use_extended_packet_size: bool,
+
+    /// Controls whether the sent packets should use outfox as opposed to the default sphinx.
+    pub use_outfox: bool,
 }

-impl From<Traffic> for ConfigTraffic {
-    fn from(traffic: Traffic) -> Self {
+impl From<TrafficWasm> for ConfigTraffic {
+    fn from(traffic: TrafficWasm) -> Self {
        let use_extended_packet_size = traffic
            .use_extended_packet_size
            .then(|| PacketSize::ExtendedPacket32);

+        let packet_type = if traffic.use_outfox {
+            PacketType::Outfox
+        } else {
+            PacketType::Mix
+        };
+
        ConfigTraffic {
            average_packet_delay: Duration::from_millis(traffic.average_packet_delay_ms),
            message_sending_average_delay: Duration::from_millis(
@@ -96,26 +94,28 @@ impl From<Traffic> for ConfigTraffic {
                .disable_main_poisson_packet_distribution,
            primary_packet_size: PacketSize::RegularPacket,
            secondary_packet_size: use_extended_packet_size,
+            packet_type,
        }
    }
 }

-impl From<ConfigTraffic> for Traffic {
+impl From<ConfigTraffic> for TrafficWasm {
    fn from(traffic: ConfigTraffic) -> Self {
-        Traffic {
+        TrafficWasm {
            average_packet_delay_ms: traffic.average_packet_delay.as_millis() as u64,
            message_sending_average_delay_ms: traffic.message_sending_average_delay.as_millis()
                as u64,
            disable_main_poisson_packet_distribution: traffic
                .disable_main_poisson_packet_distribution,
            use_extended_packet_size: traffic.secondary_packet_size.is_some(),
+            use_outfox: traffic.packet_type == PacketType::Outfox,
        }
    }
 }

 #[wasm_bindgen]
 #[derive(Debug, Copy, Clone)]
-pub struct CoverTraffic {
+pub struct CoverTrafficWasm {
    /// The parameter of Poisson distribution determining how long, on average,
    /// it is going to take for another loop cover traffic message to be sent.
    pub loop_cover_traffic_average_delay_ms: u64,
@@ -129,8 +129,8 @@ pub struct CoverTraffic {
    pub disable_loop_cover_traffic_stream: bool,
 }

-impl From<CoverTraffic> for ConfigCoverTraffic {
-    fn from(cover_traffic: CoverTraffic) -> Self {
+impl From<CoverTrafficWasm> for ConfigCoverTraffic {
+    fn from(cover_traffic: CoverTrafficWasm) -> Self {
        ConfigCoverTraffic {
            loop_cover_traffic_average_delay: Duration::from_millis(
                cover_traffic.loop_cover_traffic_average_delay_ms,
@@ -141,9 +141,9 @@ impl From<CoverTraffic> for ConfigCoverTraffic {
    }
 }

-impl From<ConfigCoverTraffic> for CoverTraffic {
+impl From<ConfigCoverTraffic> for CoverTrafficWasm {
    fn from(cover_traffic: ConfigCoverTraffic) -> Self {
-        CoverTraffic {
+        CoverTrafficWasm {
            loop_cover_traffic_average_delay_ms: cover_traffic
                .loop_cover_traffic_average_delay
                .as_millis() as u64,
@@ -155,14 +155,14 @@ impl From<ConfigCoverTraffic> for CoverTraffic {

 #[wasm_bindgen]
 #[derive(Debug, Copy, Clone)]
-pub struct GatewayConnection {
+pub struct GatewayConnectionWasm {
    /// How long we're willing to wait for a response to a message sent to the gateway,
    /// before giving up on it.
    pub gateway_response_timeout_ms: u64,
 }

-impl From<GatewayConnection> for ConfigGatewayConnection {
-    fn from(gateway_connection: GatewayConnection) -> Self {
+impl From<GatewayConnectionWasm> for ConfigGatewayConnection {
+    fn from(gateway_connection: GatewayConnectionWasm) -> Self {
        ConfigGatewayConnection {
            gateway_response_timeout: Duration::from_millis(
                gateway_connection.gateway_response_timeout_ms,
@@ -171,9 +171,9 @@ impl From<GatewayConnection> for ConfigGatewayConnection {
    }
 }

-impl From<ConfigGatewayConnection> for GatewayConnection {
+impl From<ConfigGatewayConnection> for GatewayConnectionWasm {
    fn from(gateway_connection: ConfigGatewayConnection) -> Self {
-        GatewayConnection {
+        GatewayConnectionWasm {
            gateway_response_timeout_ms: gateway_connection.gateway_response_timeout.as_millis()
                as u64,
        }
@@ -182,7 +182,7 @@ impl From<ConfigGatewayConnection> for GatewayConnection {

 #[wasm_bindgen]
 #[derive(Debug, Copy, Clone)]
-pub struct Acknowledgements {
+pub struct AcknowledgementsWasm {
    /// The parameter of Poisson distribution determining how long, on average,
    /// sent acknowledgement is going to be delayed at any given mix node.
    /// So for an ack going through three mix nodes, on average, it will take three times this value
@@ -200,8 +200,8 @@ pub struct Acknowledgements {
    pub ack_wait_addition_ms: u64,
 }

-impl From<Acknowledgements> for ConfigAcknowledgements {
-    fn from(acknowledgements: Acknowledgements) -> Self {
+impl From<AcknowledgementsWasm> for ConfigAcknowledgements {
+    fn from(acknowledgements: AcknowledgementsWasm) -> Self {
        ConfigAcknowledgements {
            average_ack_delay: Duration::from_millis(acknowledgements.average_ack_delay_ms),
            ack_wait_multiplier: acknowledgements.ack_wait_multiplier,
@@ -210,9 +210,9 @@ impl From<Acknowledgements> for ConfigAcknowledgements {
    }
 }

-impl From<ConfigAcknowledgements> for Acknowledgements {
+impl From<ConfigAcknowledgements> for AcknowledgementsWasm {
    fn from(acknowledgements: ConfigAcknowledgements) -> Self {
-        Acknowledgements {
+        AcknowledgementsWasm {
            average_ack_delay_ms: acknowledgements.average_ack_delay.as_millis() as u64,
            ack_wait_multiplier: acknowledgements.ack_wait_multiplier,
            ack_wait_addition_ms: acknowledgements.ack_wait_addition.as_millis() as u64,
@@ -222,7 +222,7 @@ impl From<ConfigAcknowledgements> for Acknowledgements {

 #[wasm_bindgen]
 #[derive(Debug, Copy, Clone)]
-pub struct Topology {
+pub struct TopologyWasm {
    /// The uniform delay every which clients are querying the directory server
    /// to try to obtain a compatible network topology to send sphinx packets through.
    pub topology_refresh_rate_ms: u64,
@@ -238,8 +238,8 @@ pub struct Topology {
    pub disable_refreshing: bool,
 }

-impl From<Topology> for ConfigTopology {
-    fn from(topology: Topology) -> Self {
+impl From<TopologyWasm> for ConfigTopology {
+    fn from(topology: TopologyWasm) -> Self {
        ConfigTopology {
            topology_refresh_rate: Duration::from_millis(topology.topology_refresh_rate_ms),
            topology_resolution_timeout: Duration::from_millis(
@@ -250,9 +250,9 @@ impl From<Topology> for ConfigTopology {
    }
 }

-impl From<ConfigTopology> for Topology {
+impl From<ConfigTopology> for TopologyWasm {
    fn from(topology: ConfigTopology) -> Self {
-        Topology {
+        TopologyWasm {
            topology_refresh_rate_ms: topology.topology_refresh_rate.as_millis() as u64,
            topology_resolution_timeout_ms: topology.topology_resolution_timeout.as_millis() as u64,
            disable_refreshing: topology.disable_refreshing,
@@ -262,7 +262,7 @@ impl From<ConfigTopology> for Topology {

 #[wasm_bindgen]
 #[derive(Debug, Copy, Clone)]
-pub struct ReplySurbs {
+pub struct ReplySurbsWasm {
    /// Defines the minimum number of reply surbs the client wants to keep in its storage at all times.
    /// It can only allow to go below that value if its to request additional reply surbs.
    pub minimum_reply_surb_storage_threshold: usize,
@@ -296,8 +296,8 @@ pub struct ReplySurbs {
    pub maximum_reply_key_age_ms: u64,
 }

-impl From<ReplySurbs> for ConfigReplySurbs {
-    fn from(reply_surbs: ReplySurbs) -> Self {
+impl From<ReplySurbsWasm> for ConfigReplySurbs {
+    fn from(reply_surbs: ReplySurbsWasm) -> Self {
        ConfigReplySurbs {
            minimum_reply_surb_storage_threshold: reply_surbs.minimum_reply_surb_storage_threshold,
            maximum_reply_surb_storage_threshold: reply_surbs.maximum_reply_surb_storage_threshold,
@@ -317,9 +317,9 @@ impl From<ReplySurbs> for ConfigReplySurbs {
    }
 }

-impl From<ConfigReplySurbs> for ReplySurbs {
+impl From<ConfigReplySurbs> for ReplySurbsWasm {
    fn from(reply_surbs: ConfigReplySurbs) -> Self {
-        ReplySurbs {
+        ReplySurbsWasm {
            minimum_reply_surb_storage_threshold: reply_surbs.minimum_reply_surb_storage_threshold,
            maximum_reply_surb_storage_threshold: reply_surbs.maximum_reply_surb_storage_threshold,
            minimum_reply_surb_request_size: reply_surbs.minimum_reply_surb_request_size,
@@ -341,28 +341,28 @@ impl From<ConfigReplySurbs> for ReplySurbs {
 // just a helper structure to more easily pass through the JS boundary
 #[wasm_bindgen]
 #[derive(Debug, Copy, Clone)]
-pub struct Debug {
+pub struct DebugWasm {
    /// Defines all configuration options related to traffic streams.
-    pub traffic: Traffic,
+    pub traffic: TrafficWasm,

    /// Defines all configuration options related to cover traffic stream(s).
-    pub cover_traffic: CoverTraffic,
+    pub cover_traffic: CoverTrafficWasm,

    /// Defines all configuration options related to the gateway connection.
-    pub gateway_connection: GatewayConnection,
+    pub gateway_connection: GatewayConnectionWasm,

    /// Defines all configuration options related to acknowledgements, such as delays or wait timeouts.
-    pub acknowledgements: Acknowledgements,
+    pub acknowledgements: AcknowledgementsWasm,

    /// Defines all configuration options related topology, such as refresh rates or timeouts.
-    pub topology: Topology,
+    pub topology: TopologyWasm,

    /// Defines all configuration options related to reply SURBs.
-    pub reply_surbs: ReplySurbs,
+    pub reply_surbs: ReplySurbsWasm,
 }

-impl From<Debug> for ConfigDebug {
-    fn from(debug: Debug) -> Self {
+impl From<DebugWasm> for ConfigDebug {
+    fn from(debug: DebugWasm) -> Self {
        ConfigDebug {
            traffic: debug.traffic.into(),
            cover_traffic: debug.cover_traffic.into(),
@@ -374,9 +374,9 @@ impl From<Debug> for ConfigDebug {
    }
 }

-impl From<ConfigDebug> for Debug {
+impl From<ConfigDebug> for DebugWasm {
    fn from(debug: ConfigDebug) -> Self {
-        Debug {
+        DebugWasm {
            traffic: debug.traffic.into(),
            cover_traffic: debug.cover_traffic.into(),
            gateway_connection: debug.gateway_connection.into(),
@@ -388,6 +388,6 @@ impl From<ConfigDebug> for Debug {
 }

 #[wasm_bindgen]
-pub fn default_debug() -> Debug {
+pub fn default_debug() -> DebugWasm {
    ConfigDebug::default().into()
 }
@@ -6,26 +6,26 @@ use crate::client::helpers::{InputSender, NymClientTestRequest, WasmTopologyExt}
 use crate::client::response_pusher::ResponsePusher;
 use crate::constants::NODE_TESTER_CLIENT_ID;
 use crate::error::WasmClientError;
-use crate::helpers::{parse_recipient, parse_sender_tag, setup_reply_surb_storage_backend};
+use crate::helpers::{
+    parse_recipient, parse_sender_tag, setup_from_topology, setup_gateway_from_api,
+    setup_reply_surb_storage_backend,
+};
 use crate::storage::traits::FullWasmClientStorage;
 use crate::storage::ClientStorage;
 use crate::topology::WasmNymTopology;
 use js_sys::Promise;
 use nym_bandwidth_controller::wasm_mockups::{Client as FakeClient, DirectSigningNyxdClient};
-use nym_bandwidth_controller::BandwidthController;
 use nym_client_core::client::base_client::{
-    BaseClientBuilder, ClientInput, ClientOutput, ClientState, CredentialsToggle,
+    BaseClientBuilder, ClientInput, ClientOutput, ClientState,
 };
 use nym_client_core::client::inbound_messages::InputMessage;
-use nym_client_core::client::replies::reply_storage::browser_backend;
-use nym_client_core::config::{
-    CoverTraffic, DebugConfig, GatewayEndpointConfig, Topology, Traffic,
-};
-use nym_credential_storage::ephemeral_storage::EphemeralStorage;
+use nym_credential_storage::ephemeral_storage::EphemeralStorage as EphemeralCredentialStorage;
+use nym_sphinx::params::PacketType;
 use nym_task::connections::TransmissionLane;
 use nym_task::TaskManager;
 use nym_topology::provider_trait::{HardcodedTopologyProvider, TopologyProvider};
 use nym_topology::NymTopology;
+use nym_validator_client::client::IdentityKey;
 use rand::rngs::OsRng;
 use rand::RngCore;
 use std::sync::Arc;
@@ -50,22 +50,18 @@ pub struct NymClient {
    // even though we don't use graceful shutdowns, other components rely on existence of this struct
    // and if it's dropped, everything will start going offline
    _task_manager: TaskManager,
+
+    packet_type: PacketType,
 }

 #[wasm_bindgen]
 pub struct NymClientBuilder {
    config: Config,
    custom_topology: Option<NymTopology>,
+    preferred_gateway: Option<IdentityKey>,

    storage_passphrase: Option<String>,
-    reply_surb_storage_backend: browser_backend::Backend,
-
    on_message: js_sys::Function,
-
-    // unimplemented:
-    bandwidth_controller:
-        Option<BandwidthController<FakeClient<DirectSigningNyxdClient>, EphemeralStorage>>,
-    disabled_credentials: bool,
 }

 #[wasm_bindgen]
@@ -74,16 +70,15 @@ impl NymClientBuilder {
    pub fn new(
        config: Config,
        on_message: js_sys::Function,
+        preferred_gateway: Option<IdentityKey>,
        storage_passphrase: Option<String>,
    ) -> Self {
        NymClientBuilder {
-            reply_surb_storage_backend: setup_reply_surb_storage_backend(config.debug.reply_surbs),
            config,
            custom_topology: None,
            storage_passphrase,
            on_message,
-            bandwidth_controller: None,
-            disabled_credentials: true,
+            preferred_gateway,
        }
    }

@@ -92,46 +87,24 @@ impl NymClientBuilder {
    // hardcoded topology
    // NOTE: you most likely want to use `[NymNodeTester]` instead.
    pub fn new_tester(
-        gateway_config: GatewayEndpointConfig,
        topology: WasmNymTopology,
        on_message: js_sys::Function,
+        gateway: Option<IdentityKey>,
    ) -> Self {
-        if !topology.ensure_contains(&gateway_config) {
-            panic!("the specified topology does not contain the gateway used by the client")
+        if let Some(gateway_id) = &gateway {
+            if !topology.ensure_contains_gateway_id(gateway_id) {
+                panic!("the specified topology does not contain the gateway used by the client")
+            }
        }

-        let full_config = Config {
-            id: NODE_TESTER_CLIENT_ID.to_string(),
-            nym_api_url: None,
-            disabled_credentials_mode: true,
-            gateway_endpoint: gateway_config,
-            debug: DebugConfig {
-                traffic: Traffic {
-                    disable_main_poisson_packet_distribution: true,
-                    ..Default::default()
-                },
-                cover_traffic: CoverTraffic {
-                    disable_loop_cover_traffic_stream: true,
-                    ..Default::default()
-                },
-                topology: Topology {
-                    disable_refreshing: true,
-                    ..Default::default()
-                },
-                ..Default::default()
-            },
-        };
+        let full_config = Config::new_tester_config(NODE_TESTER_CLIENT_ID);

        NymClientBuilder {
-            reply_surb_storage_backend: setup_reply_surb_storage_backend(
-                full_config.debug.reply_surbs,
-            ),
            config: full_config,
            custom_topology: Some(topology.into()),
            on_message,
-            bandwidth_controller: None,
-            disabled_credentials: true,
            storage_passphrase: None,
+            preferred_gateway: gateway,
        }
    }

@@ -139,7 +112,7 @@ impl NymClientBuilder {
        ResponsePusher::new(client_output, on_message).start()
    }

-    fn topology_provider(&mut self) -> Option<Box<dyn TopologyProvider>> {
+    fn topology_provider(&mut self) -> Option<Box<dyn TopologyProvider + Send + Sync>> {
        if let Some(hardcoded_topology) = self.custom_topology.take() {
            Some(Box::new(HardcodedTopologyProvider::new(hardcoded_topology)))
        } else {
@@ -147,35 +120,43 @@ impl NymClientBuilder {
        }
    }

+    fn initialise_storage(config: &Config, base_storage: ClientStorage) -> FullWasmClientStorage {
+        FullWasmClientStorage {
+            keys_and_gateway_store: base_storage,
+            reply_storage: setup_reply_surb_storage_backend(config.base.debug.reply_surbs),
+            credential_storage: EphemeralCredentialStorage::default(),
+        }
+    }
+
    async fn start_client_async(mut self) -> Result<NymClient, WasmClientError> {
        console_log!("Starting the wasm client");

-        let maybe_topology_provider = self.topology_provider();
-
-        let disabled_credentials = if self.disabled_credentials {
-            CredentialsToggle::Disabled
-        } else {
-            CredentialsToggle::Enabled
-        };
-
-        let nym_api_endpoints = match self.config.nym_api_url {
-            Some(endpoint) => vec![endpoint],
-            None => Vec::new(),
-        };
+        let nym_api_endpoints = self.config.base.client.nym_api_urls.clone();

        // TODO: this will have to be re-used for surbs. but this is a problem for another PR.
-        let key_store =
-            ClientStorage::new_async(&self.config.id, self.storage_passphrase.take()).await?;
+        let client_store =
+            ClientStorage::new_async(&self.config.base.client.id, self.storage_passphrase.take())
+                .await?;

-        let mut base_builder: BaseClientBuilder<_, FullWasmClientStorage> = BaseClientBuilder::new(
-            &self.config.gateway_endpoint,
-            &self.config.debug,
-            key_store,
-            self.bandwidth_controller,
-            self.reply_surb_storage_backend,
-            disabled_credentials,
-            nym_api_endpoints,
-        );
+        let user_chosen = self.preferred_gateway.clone();
+
+        // if we provided hardcoded topology, get gateway from it, otherwise get it the 'standard' way
+        if let Some(topology) = &self.custom_topology {
+            setup_from_topology(user_chosen, topology, &client_store).await?
+        } else {
+            setup_gateway_from_api(&client_store, user_chosen, &nym_api_endpoints).await?
+        };
+
+        let packet_type = self.config.base.debug.traffic.packet_type;
+        let storage = Self::initialise_storage(&self.config, client_store);
+        let maybe_topology_provider = self.topology_provider();
+
+        let mut base_builder: BaseClientBuilder<_, FullWasmClientStorage> =
+            BaseClientBuilder::<FakeClient<DirectSigningNyxdClient>, _>::new(
+                &self.config.base,
+                storage,
+                None,
+            );
        if let Some(topology_provider) = maybe_topology_provider {
            base_builder = base_builder.with_topology_provider(topology_provider);
        }
@@ -194,6 +175,7 @@ impl NymClientBuilder {
            client_state: Arc::new(started_client.client_state),
            _full_topology: None,
            _task_manager: started_client.task_manager,
+            packet_type,
        })
    }

@@ -207,9 +189,10 @@ impl NymClient {
    async fn _new(
        config: Config,
        on_message: js_sys::Function,
+        preferred_gateway: Option<IdentityKey>,
        storage_passphrase: Option<String>,
    ) -> Result<NymClient, WasmClientError> {
-        NymClientBuilder::new(config, on_message, storage_passphrase)
+        NymClientBuilder::new(config, on_message, preferred_gateway, storage_passphrase)
            .start_client_async()
            .await
    }
@@ -219,10 +202,11 @@ impl NymClient {
    pub fn new(
        config: Config,
        on_message: js_sys::Function,
+        preferred_gateway: Option<IdentityKey>,
        storage_passphrase: Option<String>,
    ) -> Promise {
        future_to_promise(async move {
-            Self::_new(config, on_message, storage_passphrase)
+            Self::_new(config, on_message, preferred_gateway, storage_passphrase)
                .await
                .into_promise_result()
        })
@@ -269,7 +253,7 @@ impl NymClient {
        let input_msgs = request
            .test_msgs
            .into_iter()
-            .map(|p| InputMessage::new_regular(recipient, p, lane))
+            .map(|p| InputMessage::new_regular(recipient, p, lane, None))
            .collect();

        self.client_input.send_messages(input_msgs)
@@ -289,7 +273,7 @@ impl NymClient {

        let lane = TransmissionLane::General;

-        let input_msg = InputMessage::new_regular(recipient, message, lane);
+        let input_msg = InputMessage::new_regular(recipient, message, lane, Some(self.packet_type));
        self.client_input.send_message(input_msg)
    }

@@ -316,7 +300,13 @@ impl NymClient {

        let lane = TransmissionLane::General;

-        let input_msg = InputMessage::new_anonymous(recipient, message, reply_surbs, lane);
+        let input_msg = InputMessage::new_anonymous(
+            recipient,
+            message,
+            reply_surbs,
+            lane,
+            Some(self.packet_type),
+        );
        self.client_input.send_message(input_msg)
    }

@@ -334,7 +324,7 @@ impl NymClient {

        let lane = TransmissionLane::General;

-        let input_msg = InputMessage::new_reply(sender_tag, message, lane);
+        let input_msg = InputMessage::new_reply(sender_tag, message, lane, Some(self.packet_type));
        self.client_input.send_message(input_msg)
    }
 }
@@ -4,12 +4,14 @@
 use crate::storage::errors::ClientStorageError;
 use crate::topology::WasmTopologyError;
 use js_sys::Promise;
+use nym_client_core::config::GatewayEndpointConfig;
 use nym_client_core::error::ClientCoreError;
 use nym_crypto::asymmetric::identity::Ed25519RecoveryError;
 use nym_gateway_client::error::GatewayClientError;
 use nym_node_tester_utils::error::NetworkTestingError;
 use nym_sphinx::addressing::clients::RecipientFormattingError;
 use nym_sphinx::anonymous_replies::requests::InvalidAnonymousSenderTagRepresentation;
+use nym_topology::NymTopologyError;
 use nym_validator_client::ValidatorClientError;
 use thiserror::Error;
 use wasm_bindgen::JsValue;
@@ -44,12 +46,18 @@ pub enum WasmClientError {
        source: ValidatorClientError,
    },

-    #[error("The provided topology was invalid: {source}")]
+    #[error("The provided wasm topology was invalid: {source}")]
    WasmTopologyError {
        #[from]
        source: WasmTopologyError,
    },

+    #[error("The provided nym topology was invalid: {source}")]
+    TopologyError {
+        #[from]
+        source: NymTopologyError,
+    },
+
    #[error("failed to test the node: {source}")]
    NodeTestingFailure {
        #[from]
@@ -68,6 +76,9 @@ pub enum WasmClientError {
    #[error("Mixnode {mixnode_identity} is not present in the current network topology")]
    NonExistentMixnode { mixnode_identity: String },

+    #[error("Gateway {gateway_identity} is not present in the current network topology")]
+    NonExistentGateway { gateway_identity: String },
+
    #[error("{raw} is not a valid Nym network recipient: {source}")]
    MalformedRecipient {
        raw: String,
@@ -85,6 +96,11 @@ pub enum WasmClientError {
        #[from]
        source: ClientStorageError,
    },
+
+    #[error("this client has already registered with a gateway: {gateway_config:?}")]
+    AlreadyRegistered {
+        gateway_config: GatewayEndpointConfig,
+    },
 }

 impl WasmClientError {
@@ -2,21 +2,26 @@
 // SPDX-License-Identifier: Apache-2.0

 use crate::error::WasmClientError;
+use crate::storage::ClientStorage;
 use crate::topology::WasmNymTopology;
 use js_sys::Promise;
 use nym_client_core::client::replies::reply_storage::browser_backend;
 use nym_client_core::config;
+use nym_client_core::init::helpers::current_gateways;
+use nym_client_core::init::{setup_gateway_from, GatewaySetup, InitialisationDetails};
 use nym_sphinx::addressing::clients::Recipient;
 use nym_sphinx::anonymous_replies::requests::AnonymousSenderTag;
-use nym_topology::NymTopology;
+use nym_topology::{gateway, NymTopology};
+use nym_validator_client::client::IdentityKey;
 use nym_validator_client::NymApiClient;
+use rand::thread_rng;
 use url::Url;
 use wasm_bindgen::prelude::wasm_bindgen;
 use wasm_bindgen_futures::future_to_promise;
 use wasm_utils::PromisableResult;

 // don't get too excited about the name, under the hood it's just a big fat placeholder
-// with no persistence
+// with no disk_persistence
 pub(crate) fn setup_reply_surb_storage_backend(
    config: config::ReplySurbs,
 ) -> browser_backend::Backend {
@@ -72,3 +77,38 @@ pub fn current_network_topology(nym_api_url: String) -> Promise {
            .into_promise_result()
    })
 }
+
+async fn setup_gateway(
+    client_store: &ClientStorage,
+    chosen_gateway: Option<IdentityKey>,
+    gateways: &[gateway::Node],
+) -> Result<InitialisationDetails, WasmClientError> {
+    let setup = if client_store.has_full_gateway_info().await? {
+        GatewaySetup::MustLoad
+    } else {
+        GatewaySetup::new_fresh(chosen_gateway.clone(), None)
+    };
+
+    setup_gateway_from(&setup, client_store, client_store, false, Some(gateways))
+        .await
+        .map_err(Into::into)
+}
+
+pub(crate) async fn setup_gateway_from_api(
+    client_store: &ClientStorage,
+    chosen_gateway: Option<IdentityKey>,
+    nym_apis: &[Url],
+) -> Result<InitialisationDetails, WasmClientError> {
+    let mut rng = thread_rng();
+    let gateways = current_gateways(&mut rng, nym_apis).await?;
+    setup_gateway(client_store, chosen_gateway, &gateways).await
+}
+
+pub(crate) async fn setup_from_topology(
+    explicit_gateway: Option<IdentityKey>,
+    topology: &NymTopology,
+    client_store: &ClientStorage,
+) -> Result<InitialisationDetails, WasmClientError> {
+    let gateways = topology.gateways();
+    setup_gateway(client_store, explicit_gateway, gateways).await
+}
@@ -16,6 +16,9 @@ pub enum ClientStorageError {

    #[error("{typ} cryptographic key is not available in storage")]
    CryptoKeyNotInStorage { typ: String },
+
+    #[error("the prior gateway details are not available in the storage")]
+    GatewayDetailsNotInStorage,
 }

 impl From<ClientStorageError> for JsValue {
@@ -1,8 +1,10 @@
 // Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+use crate::client::config::Config;
 use crate::storage::errors::ClientStorageError;
 use js_sys::Promise;
+use nym_client_core::client::base_client::storage::gateway_details::PersistedGatewayDetails;
 use nym_crypto::asymmetric::{encryption, identity};
 use nym_gateway_client::SharedKeys;
 use nym_sphinx::acknowledgements::AckKey;
@@ -23,10 +25,14 @@ const STORAGE_VERSION: u32 = 1;
 mod v1 {
    // stores
    pub const KEYS_STORE: &str = "keys";
+    pub const CORE_STORE: &str = "core";

    // keys
+    pub const CONFIG: &str = "config";
+    pub const GATEWAY_DETAILS: &str = "gateway_details";
+
    pub const ED25519_IDENTITY_KEYPAIR: &str = "ed25519_identity_keypair";
-    pub const X25519_ENCRYPTION_KEYPAIR: &str = "x25519_encryption_key";
+    pub const X25519_ENCRYPTION_KEYPAIR: &str = "x25519_encryption_keypair";

    // TODO: for those we could actually use the subtle crypto storage
    pub const AES128CTR_ACK_KEY: &str = "aes128ctr_ack_key";
@@ -67,6 +73,7 @@ impl ClientStorage {
                let db = evt.db();

                db.create_object_store(v1::KEYS_STORE)?;
+                db.create_object_store(v1::CORE_STORE)?;
            }

            Ok(())
@@ -104,6 +111,32 @@ impl ClientStorage {
        })
    }

+    // TODO: persist client's config
+    #[allow(dead_code)]
+    pub(crate) async fn read_config(&self) -> Result<Option<Config>, ClientStorageError> {
+        self.inner
+            .read_value(v1::CORE_STORE, JsValue::from_str(v1::CONFIG))
+            .await
+            .map_err(Into::into)
+    }
+
+    pub(crate) async fn may_read_gateway_details(
+        &self,
+    ) -> Result<Option<PersistedGatewayDetails>, ClientStorageError> {
+        self.inner
+            .read_value(v1::CORE_STORE, JsValue::from_str(v1::GATEWAY_DETAILS))
+            .await
+            .map_err(Into::into)
+    }
+
+    pub(crate) async fn must_read_gateway_details(
+        &self,
+    ) -> Result<PersistedGatewayDetails, ClientStorageError> {
+        self.may_read_gateway_details()
+            .await?
+            .ok_or(ClientStorageError::GatewayDetailsNotInStorage)
+    }
+
    async fn may_read_identity_keypair(
        &self,
    ) -> Result<Option<identity::KeyPair>, ClientStorageError> {
@@ -228,4 +261,34 @@ impl ClientStorage {
            .await
            .map_err(Into::into)
    }
+
+    pub(crate) async fn store_gateway_details(
+        &self,
+        gateway_endpoint: &PersistedGatewayDetails,
+    ) -> Result<(), ClientStorageError> {
+        self.inner
+            .store_value(
+                v1::CORE_STORE,
+                JsValue::from_str(v1::GATEWAY_DETAILS),
+                gateway_endpoint,
+            )
+            .await
+            .map_err(Into::into)
+    }
+
+    // TODO: persist client's config
+    #[allow(dead_code)]
+    pub(crate) async fn store_config(&self, config: &Config) -> Result<(), ClientStorageError> {
+        self.inner
+            .store_value(v1::CORE_STORE, JsValue::from_str(v1::CONFIG), config)
+            .await
+            .map_err(Into::into)
+    }
+
+    pub(crate) async fn has_full_gateway_info(&self) -> Result<bool, ClientStorageError> {
+        let has_keys = self.may_read_gateway_shared_key().await?.is_some();
+        let has_details = self.may_read_gateway_details().await?.is_some();
+
+        Ok(has_keys && has_details)
+    }
 }
@@ -4,6 +4,9 @@
 use crate::storage::errors::ClientStorageError;
 use crate::storage::ClientStorage;
 use async_trait::async_trait;
+use nym_client_core::client::base_client::storage::gateway_details::{
+    GatewayDetailsStore, PersistedGatewayDetails,
+};
 use nym_client_core::client::base_client::storage::MixnetClientStorage;
 use nym_client_core::client::key_manager::persistence::KeyStore;
 use nym_client_core::client::key_manager::KeyManager;
@@ -14,9 +17,9 @@ use wasm_utils::console_log;
 // temporary until other variants are properly implemented (probably it should get changed into `ClientStorage`
 // implementing all traits and everything getting combined
 pub struct FullWasmClientStorage {
-    key_store: ClientStorage,
-    reply_storage: browser_backend::Backend,
-    credential_storage: EphemeralCredentialStorage,
+    pub(crate) keys_and_gateway_store: ClientStorage,
+    pub(crate) reply_storage: browser_backend::Backend,
+    pub(crate) credential_storage: EphemeralCredentialStorage,
 }

 impl MixnetClientStorage for FullWasmClientStorage {
@@ -24,12 +27,14 @@ impl MixnetClientStorage for FullWasmClientStorage {
    type ReplyStore = browser_backend::Backend;
    type CredentialStore = EphemeralCredentialStorage;

-    fn into_split(self) -> (Self::KeyStore, Self::ReplyStore, Self::CredentialStore) {
-        (self.key_store, self.reply_storage, self.credential_storage)
+    type GatewayDetailsStore = ClientStorage;
+
+    fn into_runtime_stores(self) -> (Self::ReplyStore, Self::CredentialStore) {
+        (self.reply_storage, self.credential_storage)
    }

    fn key_store(&self) -> &Self::KeyStore {
-        &self.key_store
+        &self.keys_and_gateway_store
    }

    fn reply_store(&self) -> &Self::ReplyStore {
@@ -39,6 +44,10 @@ impl MixnetClientStorage for FullWasmClientStorage {
    fn credential_store(&self) -> &Self::CredentialStore {
        &self.credential_storage
    }
+
+    fn gateway_details_store(&self) -> &Self::GatewayDetailsStore {
+        &self.keys_and_gateway_store
+    }
 }

 #[async_trait(?Send)]
@@ -74,3 +83,19 @@ impl KeyStore for ClientStorage {
            .await
    }
 }
+
+#[async_trait(?Send)]
+impl GatewayDetailsStore for ClientStorage {
+    type StorageError = ClientStorageError;
+
+    async fn load_gateway_details(&self) -> Result<PersistedGatewayDetails, Self::StorageError> {
+        self.must_read_gateway_details().await
+    }
+
+    async fn store_gateway_details(
+        &self,
+        details: &PersistedGatewayDetails,
+    ) -> Result<(), Self::StorageError> {
+        self.store_gateway_details(details).await
+    }
+}
@@ -4,6 +4,9 @@
 // due to expansion of #[wasm_bindgen] macro on NodeTestResult
 #![allow(clippy::drop_non_drop)]

+use crate::error::WasmClientError;
+use crate::tester::LockedGatewayClient;
+use js_sys::Promise;
 use nym_node_tester_utils::processor::Received;
 use nym_node_tester_utils::receiver::ReceivedReceiver;
 use serde::{Deserialize, Serialize};
@@ -12,6 +15,7 @@ use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
 use tokio::sync::{Mutex as AsyncMutex, MutexGuard as AsyncMutexGuard};
 use wasm_bindgen::prelude::*;
+use wasm_bindgen_futures::future_to_promise;
 use wasm_utils::{console_log, console_warn};

 #[derive(Clone)]
@@ -107,3 +111,37 @@ impl Drop for TestMarker {
        self.value.store(false, Ordering::SeqCst)
    }
 }
+
+pub(crate) trait GatewayReconnection {
+    fn disconnect_from_gateway(&self) -> Promise;
+
+    fn reconnect_to_gateway(&self) -> Promise;
+}
+
+impl GatewayReconnection for LockedGatewayClient {
+    fn disconnect_from_gateway(&self) -> Promise {
+        let this = self.clone();
+
+        future_to_promise(async move {
+            let mut guard = this.lock().await;
+            guard
+                .disconnect()
+                .await
+                .map_err(|err| JsValue::from(WasmClientError::from(err)))?;
+            Ok(JsValue::undefined())
+        })
+    }
+
+    fn reconnect_to_gateway(&self) -> Promise {
+        let this = self.clone();
+
+        future_to_promise(async move {
+            let mut guard = this.lock().await;
+            guard
+                .try_reconnect()
+                .await
+                .map_err(|err| JsValue::from(WasmClientError::from(err)))?;
+            Ok(JsValue::undefined())
+        })
+    }
+}
@@ -3,11 +3,11 @@

 use crate::constants::NODE_TESTER_ID;
 use crate::error::WasmClientError;
-use crate::helpers::current_network_topology_async;
+use crate::helpers::{current_network_topology_async, setup_from_topology};
 use crate::storage::ClientStorage;
 use crate::tester::ephemeral_receiver::EphemeralTestReceiver;
 use crate::tester::helpers::{
-    NodeTestResult, ReceivedReceiverWrapper, TestMarker, WasmTestMessageExt,
+    GatewayReconnection, NodeTestResult, ReceivedReceiverWrapper, TestMarker, WasmTestMessageExt,
 };
 use crate::topology::WasmNymTopology;
 use futures::channel::mpsc;
@@ -15,9 +15,8 @@ use js_sys::Promise;
 use nym_bandwidth_controller::wasm_mockups::{Client as FakeClient, DirectSigningNyxdClient};
 use nym_bandwidth_controller::BandwidthController;
 use nym_client_core::client::key_manager::ManagedKeys;
-use nym_client_core::config::GatewayEndpointConfig;
+use nym_client_core::init::InitialisationDetails;
 use nym_credential_storage::ephemeral_storage::EphemeralStorage;
-use nym_crypto::asymmetric::identity;
 use nym_gateway_client::GatewayClient;
 use nym_node_tester_utils::receiver::SimpleMessageReceiver;
 use nym_node_tester_utils::{NodeTester, TestMessage};
@@ -27,6 +26,7 @@ use nym_sphinx::params::PacketSize;
 use nym_sphinx::preparer::PreparedFragment;
 use nym_task::TaskManager;
 use nym_topology::NymTopology;
+use nym_validator_client::client::IdentityKey;
 use rand::rngs::OsRng;
 use std::collections::HashSet;
 use std::sync::atomic::{AtomicBool, AtomicU32, Ordering};
@@ -72,7 +72,7 @@ pub struct NymNodeTester {

 #[wasm_bindgen]
 pub struct NymNodeTesterBuilder {
-    gateway_config: GatewayEndpointConfig,
+    gateway: Option<IdentityKey>,

    base_topology: NymTopology,

@@ -93,51 +93,61 @@ fn address(keys: &ManagedKeys, gateway_identity: NodeIdentity) -> Recipient {
 impl NymNodeTesterBuilder {
    #[wasm_bindgen(constructor)]
    pub fn new(
-        gateway_config: GatewayEndpointConfig,
        base_topology: WasmNymTopology,
+        gateway: Option<IdentityKey>,
    ) -> NymNodeTesterBuilder {
        NymNodeTesterBuilder {
-            gateway_config,
+            gateway,
            base_topology: base_topology.into(),
            bandwidth_controller: None,
        }
    }

    async fn _new_with_api(
-        gateway_config: GatewayEndpointConfig,
        api_url: String,
+        gateway: Option<IdentityKey>,
    ) -> Result<Self, WasmClientError> {
        let topology = current_network_topology_async(api_url).await?;
-        Ok(NymNodeTesterBuilder::new(gateway_config, topology))
+        Ok(NymNodeTesterBuilder::new(topology, gateway))
    }

-    pub fn new_with_api(gateway_config: GatewayEndpointConfig, api_url: String) -> Promise {
+    pub fn new_with_api(gateway: Option<IdentityKey>, api_url: String) -> Promise {
        future_to_promise(async move {
-            Self::_new_with_api(gateway_config, api_url)
+            Self::_new_with_api(api_url, gateway)
                .await
                .into_promise_result()
        })
    }

+    async fn gateway_info(
+        &self,
+        client_store: &ClientStorage,
+    ) -> Result<InitialisationDetails, WasmClientError> {
+        if let Ok(loaded) = InitialisationDetails::try_load(client_store, client_store).await {
+            Ok(loaded)
+        } else {
+            setup_from_topology(self.gateway.clone(), &self.base_topology, client_store).await
+        }
+    }
+
    async fn _setup_client(mut self) -> Result<NymNodeTester, WasmClientError> {
-        let mut rng = OsRng;
        let task_manager = TaskManager::default();

-        let gateway_identity =
-            identity::PublicKey::from_base58_string(self.gateway_config.gateway_id)
-                .map_err(|source| WasmClientError::InvalidGatewayIdentity { source })?;
+        let client_store = ClientStorage::new_async(NODE_TESTER_ID, None).await?;

-        let key_store = ClientStorage::new_async(NODE_TESTER_ID, None).await?;
-        let mut managed_keys = ManagedKeys::load_or_generate(&mut rng, &key_store).await;
+        let init_details = self.gateway_info(&client_store).await?;
+        let gateway_endpoint = init_details.gateway_details;
+        let gateway_identity = gateway_endpoint.try_get_gateway_identity_key()?;
+        let managed_keys = init_details.managed_keys;

        let (mixnet_message_sender, mixnet_message_receiver) = mpsc::unbounded();
        let (ack_sender, ack_receiver) = mpsc::unbounded();

        let mut gateway_client = GatewayClient::new(
-            self.gateway_config.gateway_listener,
+            gateway_endpoint.gateway_listener,
            managed_keys.identity_keypair(),
            gateway_identity,
-            managed_keys.gateway_shared_key(),
+            Some(managed_keys.must_get_gateway_shared_key()),
            mixnet_message_sender,
            ack_sender,
            Duration::from_secs(10),
@@ -146,14 +156,11 @@ impl NymNodeTesterBuilder {
        );

        gateway_client.set_disabled_credentials_mode(true);
-        let shared_keys = gateway_client.authenticate_and_start().await?;
-        managed_keys
-            .deal_with_gateway_key(shared_keys, &key_store)
-            .await?;
+        gateway_client.authenticate_and_start().await?;

        // TODO: make those values configurable later
        let tester = NodeTester::new(
-            rng,
+            OsRng,
            self.base_topology,
            Some(address(&managed_keys, gateway_identity)),
            PacketSize::default(),
@@ -227,29 +234,37 @@ async fn test_mixnode(
 impl NymNodeTester {
    #[wasm_bindgen(constructor)]
    #[allow(clippy::new_ret_no_self)]
-    pub fn new(gateway_config: GatewayEndpointConfig, topology: WasmNymTopology) -> Promise {
+    pub fn new(topology: WasmNymTopology, gateway: Option<IdentityKey>) -> Promise {
        console_log!("constructing node tester!");
-        NymNodeTesterBuilder::new(gateway_config, topology).setup_client()
+        NymNodeTesterBuilder::new(topology, gateway).setup_client()
    }

    async fn _new_with_api(
-        gateway_config: GatewayEndpointConfig,
        api_url: String,
+        gateway: Option<IdentityKey>,
    ) -> Result<Self, WasmClientError> {
-        NymNodeTesterBuilder::_new_with_api(gateway_config, api_url)
+        NymNodeTesterBuilder::_new_with_api(api_url, gateway)
            .await?
            ._setup_client()
            .await
    }

-    pub fn new_with_api(gateway_config: GatewayEndpointConfig, api_url: String) -> Promise {
+    pub fn new_with_api(api_url: String, gateway: Option<IdentityKey>) -> Promise {
        future_to_promise(async move {
-            Self::_new_with_api(gateway_config, api_url)
+            Self::_new_with_api(api_url, gateway)
                .await
                .into_promise_result()
        })
    }

+    pub fn disconnect_from_gateway(&self) -> Promise {
+        self.gateway_client.disconnect_from_gateway()
+    }
+
+    pub fn reconnect_to_gateway(&self) -> Promise {
+        self.gateway_client.reconnect_to_gateway()
+    }
+
    fn prepare_test_packets(
        &self,
        mixnode_identity: String,
@@ -6,7 +6,7 @@ use nym_crypto::asymmetric::{encryption, identity};
 use nym_topology::gateway::GatewayConversionError;
 use nym_topology::mix::{Layer, MixnodeConversionError};
 use nym_topology::{gateway, mix, MixLayer, NymTopology};
-use nym_validator_client::client::MixId;
+use nym_validator_client::client::{IdentityKeyRef, MixId};
 use serde::{Deserialize, Serialize};
 use std::collections::BTreeMap;
 use thiserror::Error;
@@ -82,11 +82,16 @@ impl WasmNymTopology {
        })
    }

+    #[allow(dead_code)]
    pub(crate) fn ensure_contains(&self, gateway_config: &GatewayEndpointConfig) -> bool {
+        self.ensure_contains_gateway_id(&gateway_config.gateway_id)
+    }
+
+    pub(crate) fn ensure_contains_gateway_id(&self, gateway_id: IdentityKeyRef) -> bool {
        self.inner
            .gateways()
            .iter()
-            .any(|g| g.identity_key.to_base58_string() == gateway_config.gateway_id)
+            .any(|g| g.identity_key.to_base58_string() == gateway_id)
    }

    pub fn print(&self) {
@@ -130,7 +130,7 @@ impl AsyncFileWatcher {
                Ok(event) => {
                    let now = Instant::now();
                    if self.should_propagate(&event, now) {
-                        self.last_received.insert(event.kind.clone(), now);
+                        self.last_received.insert(event.kind, now);
                        if let Err(_err) = self.event_sender.unbounded_send(event) {
                            log::error!("the file watcher receiver has been dropped!");
                        }
@@ -26,7 +26,7 @@ pub mod error;
 #[cfg(target_arch = "wasm32")]
 pub mod wasm_mockups;

-pub struct BandwidthController<C, St: Storage> {
+pub struct BandwidthController<C, St> {
    storage: St,
    client: C,
 }
@@ -15,15 +15,21 @@ clap_complete_fig = "4.0"
 log = { workspace = true }
 pretty_env_logger = "0.4.0"
 semver = "0.11"
-serde = { workspace = true, features = ["derive"], optional = true }
+serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true, optional = true }

 ## tracing
-tracing-appender = { version = "0.2.2", optional = true }
 tracing-subscriber = { version = "0.3.16", features = [
    "env-filter",
 ], optional = true }
 tracing-tree = { version = "0.2.2", optional = true }
+opentelemetry-jaeger = { version = "0.18.0", optional = true, features = [
+    "rt-tokio",
+    "collector_client",
+    "isahc_collector_client",
+] }
+tracing-opentelemetry = { version = "0.19.0", optional = true }
+opentelemetry = { version = "0.19.0", optional = true, features = ["rt-tokio"] }


 [build-dependencies]
@@ -36,5 +42,11 @@ vergen = { version = "=7.4.3", default-features = false, features = [

 [features]
 default = []
-output_format = ["serde", "serde_json"]
-tracing = ["tracing-appender", "tracing-subscriber", "tracing-tree"]
+output_format = ["serde_json"]
+tracing = [
+    "tracing-subscriber",
+    "tracing-tree",
+    "opentelemetry-jaeger",
+    "tracing-opentelemetry",
+    "opentelemetry",
+]
@@ -4,6 +4,8 @@
 // TODO: at a later date this crate should probably also expose `ContractBuildInformation`
 // and be used by our smart contracts

+use serde::{Deserialize, Serialize};
+
 #[derive(Debug)]
 pub struct BinaryBuildInformation {
    // VERGEN_BUILD_TIMESTAMP
@@ -99,8 +101,7 @@ impl BinaryBuildInformation {
    }
 }

-#[derive(Debug)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct BinaryBuildInformationOwned {
    // VERGEN_BUILD_TIMESTAMP
    /// Provides the build timestamp, for example `2021-02-23T20:14:46.558472672+00:00`.
@@ -4,5 +4,7 @@
 pub mod build_information;
 pub mod completions;
 pub mod logging;
-pub mod output_format;
 pub mod version_checker;
+
+#[cfg(feature = "output_format")]
+pub mod output_format;
@@ -1,17 +1,25 @@
-// Copyright 2022 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2022-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0
-// use tracing_subscriber::{
-//     fmt::Layer, layer::SubscriberExt, util::SubscriberInitExt, EnvFilter, Registry,
-// };
-// use tracing_tree::HierarchicalLayer;
+
+use serde::{Deserialize, Serialize};

 #[cfg(feature = "tracing")]
-pub use tracing_appender;
+pub use opentelemetry;
+#[cfg(feature = "tracing")]
+pub use opentelemetry_jaeger;
+#[cfg(feature = "tracing")]
+pub use tracing_opentelemetry;
 #[cfg(feature = "tracing")]
 pub use tracing_subscriber;
 #[cfg(feature = "tracing")]
 pub use tracing_tree;

+#[derive(Debug, Default, Clone, Deserialize, PartialEq, Eq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct LoggingSettings {
+    // well, we need to implement something here at some point...
+}
+
 // I'd argue we should start transitioning from `log` to `tracing`
 pub fn setup_logging() {
    let mut log_builder = pretty_env_logger::formatted_timed_builder();
@@ -39,27 +47,35 @@ pub fn setup_logging() {
 #[cfg(feature = "tracing")]
 #[macro_export]
 macro_rules! setup_tracing {
-    ($file_name: expr) => {
+    ($service_name: expr) => {
        use nym_bin_common::logging::tracing_subscriber::layer::SubscriberExt;
        use nym_bin_common::logging::tracing_subscriber::util::SubscriberInitExt;

-        let file_appender =
-            nym_bin_common::logging::tracing_appender::rolling::hourly($file_name, "log");
-        let (non_blocking, _guard) =
-            nym_bin_common::logging::tracing_appender::non_blocking(file_appender);
-        let appender_layer = nym_bin_common::logging::tracing_subscriber::fmt::Layer::new()
-            .with_ansi(false)
-            .with_writer(non_blocking);
-
-        nym_bin_common::logging::tracing_subscriber::Registry::default()
+        let registry = nym_bin_common::logging::tracing_subscriber::Registry::default()
            .with(nym_bin_common::logging::tracing_subscriber::EnvFilter::from_default_env())
-            .with(appender_layer)
            .with(
                nym_bin_common::logging::tracing_tree::HierarchicalLayer::new(4)
                    .with_targets(true)
                    .with_bracketed_fields(true),
+            );
+
+        let tracer = nym_bin_common::logging::opentelemetry_jaeger::new_collector_pipeline()
+            .with_endpoint("http://44.199.230.10:14268/api/traces")
+            .with_service_name($service_name)
+            .with_isahc()
+            .with_trace_config(
+                nym_bin_common::logging::opentelemetry::sdk::trace::config().with_sampler(
+                    nym_bin_common::logging::opentelemetry::sdk::trace::Sampler::TraceIdRatioBased(
+                        0.1,
+                    ),
+                ),
            )
-            .init();
+            .install_batch(nym_bin_common::logging::opentelemetry::runtime::Tokio)
+            .expect("Could not init tracer");
+
+        let telemetry = nym_bin_common::logging::tracing_opentelemetry::layer().with_tracer(tracer);
+
+        registry.with(telemetry).init();
    };
 }

@@ -9,6 +9,7 @@ rust-version = "1.66"

 [dependencies]
 async-trait = { workspace = true }
+base64 = "0.21.2"
 dirs = "4.0"
 dashmap = "5.4.0"
 futures = "0.3"
@@ -17,6 +18,7 @@ log = { workspace = true }
 rand = { version = "0.7.3", features = ["wasm-bindgen"] }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
+sha2 = "0.10.6"
 tap = "1.0.1"
 thiserror = "1.0.34"
 url = { version ="2.2", features = ["serde"] }
@@ -37,17 +37,20 @@ use nym_gateway_client::{
 use nym_sphinx::acknowledgements::AckKey;
 use nym_sphinx::addressing::clients::Recipient;
 use nym_sphinx::addressing::nodes::NodeIdentity;
+use nym_sphinx::params::PacketType;
 use nym_sphinx::receiver::{ReconstructedMessage, SphinxMessageReceiver};
 use nym_task::connections::{ConnectionCommandReceiver, ConnectionCommandSender, LaneQueueLengths};
 use nym_task::{TaskClient, TaskManager};
 use nym_topology::provider_trait::TopologyProvider;
-use rand::thread_rng;
 use std::sync::Arc;
 use tap::TapFallible;
 use url::Url;

 #[cfg(target_arch = "wasm32")]
 use nym_bandwidth_controller::wasm_mockups::DkgQueryClient;
+
+use crate::client::base_client::storage::gateway_details::GatewayDetailsStore;
+use crate::init::{setup_gateway, GatewaySetup, InitialisationDetails};
 #[cfg(not(target_arch = "wasm32"))]
 use nym_validator_client::nyxd::traits::DkgQueryClient;

@@ -155,17 +158,11 @@ impl From<bool> for CredentialsToggle {
 }

 pub struct BaseClientBuilder<'a, C, S: MixnetClientStorage> {
-    // due to wasm limitations I had to split it like this : (
-    gateway_config: &'a GatewayEndpointConfig,
-    debug_config: &'a DebugConfig,
-    disabled_credentials: bool,
-    nym_api_endpoints: Vec<Url>,
-    reply_storage_backend: S::ReplyStore,
-    key_store: S::KeyStore,
-
-    custom_topology_provider: Option<Box<dyn TopologyProvider>>,
-    bandwidth_controller: Option<BandwidthController<C, S::CredentialStore>>,
-    managed_keys: ManagedKeys,
+    config: &'a Config,
+    client_store: S,
+    dkg_query_client: Option<C>,
+    custom_topology_provider: Option<Box<dyn TopologyProvider + Send + Sync>>,
+    setup_method: GatewaySetup,
 }

 impl<'a, C, S> BaseClientBuilder<'a, C, S>
@@ -173,63 +170,45 @@ where
    S: MixnetClientStorage + 'static,
    C: DkgQueryClient + Send + Sync + 'static,
 {
-    // TODO: combine all storages
-    pub fn new_from_base_config<T>(
-        base_config: &'a Config<T>,
-        key_store: S::KeyStore,
-        bandwidth_controller: Option<BandwidthController<C, S::CredentialStore>>,
-        reply_storage_backend: S::ReplyStore,
-    ) -> BaseClientBuilder<'a, C, S> {
-        BaseClientBuilder {
-            gateway_config: base_config.get_gateway_endpoint_config(),
-            debug_config: base_config.get_debug_config(),
-            disabled_credentials: base_config.get_disabled_credentials_mode(),
-            nym_api_endpoints: base_config.get_nym_api_endpoints(),
-            bandwidth_controller,
-            reply_storage_backend,
-            key_store,
-            managed_keys: ManagedKeys::Invalidated,
-            custom_topology_provider: None,
-        }
-    }
-
-    // TODO: combine all storages
    pub fn new(
-        gateway_config: &'a GatewayEndpointConfig,
-        debug_config: &'a DebugConfig,
-        key_store: S::KeyStore,
-        bandwidth_controller: Option<BandwidthController<C, S::CredentialStore>>,
-        reply_storage_backend: S::ReplyStore,
-        credentials_toggle: CredentialsToggle,
-        nym_api_endpoints: Vec<Url>,
+        base_config: &'a Config,
+        client_store: S,
+        dkg_query_client: Option<C>,
    ) -> BaseClientBuilder<'a, C, S> {
        BaseClientBuilder {
-            gateway_config,
-            debug_config,
-            disabled_credentials: credentials_toggle.is_disabled(),
-            nym_api_endpoints,
-            reply_storage_backend,
+            config: base_config,
+            client_store,
+            dkg_query_client,
            custom_topology_provider: None,
-            bandwidth_controller,
-            key_store,
-            managed_keys: ManagedKeys::Invalidated,
+            setup_method: GatewaySetup::MustLoad,
        }
    }

-    pub fn with_topology_provider(mut self, provider: Box<dyn TopologyProvider>) -> Self {
+    pub fn with_gateway_setup(mut self, setup: GatewaySetup) -> Self {
+        self.setup_method = setup;
+        self
+    }
+
+    pub fn with_topology_provider(
+        mut self,
+        provider: Box<dyn TopologyProvider + Send + Sync>,
+    ) -> Self {
        self.custom_topology_provider = Some(provider);
        self
    }

    // note: do **NOT** make this method public as its only valid usage is from within `start_base`
    // because it relies on the crypto keys being already loaded
-    fn as_mix_recipient(&self) -> Recipient {
+    fn mix_address(
+        managed_keys: &ManagedKeys,
+        gateway_config: &GatewayEndpointConfig,
+    ) -> Recipient {
        Recipient::new(
-            *self.managed_keys.identity_public_key(),
-            *self.managed_keys.encryption_public_key(),
+            *managed_keys.identity_public_key(),
+            *managed_keys.encryption_public_key(),
            // TODO: below only works under assumption that gateway address == gateway id
            // (which currently is true)
-            NodeIdentity::from_base58_string(&self.gateway_config.gateway_id).unwrap(),
+            NodeIdentity::from_base58_string(&gateway_config.gateway_id).unwrap(),
        )
    }

@@ -271,6 +250,7 @@ where
        lane_queue_lengths: LaneQueueLengths,
        client_connection_rx: ConnectionCommandReceiver,
        shutdown: TaskClient,
+        packet_type: PacketType,
    ) {
        info!("Starting real traffic stream...");

@@ -286,7 +266,7 @@ where
            lane_queue_lengths,
            client_connection_rx,
        )
-        .start_with_shutdown(shutdown);
+        .start_with_shutdown(shutdown, packet_type);
    }

    // buffer controlling all messages fetched from provider
@@ -312,7 +292,10 @@ where
    }

    async fn start_gateway_client(
-        &mut self,
+        config: &Config,
+        gateway_config: GatewayEndpointConfig,
+        managed_keys: &ManagedKeys,
+        bandwidth_controller: Option<BandwidthController<C, S::CredentialStore>>,
        mixnet_message_sender: MixnetMessageSender,
        ack_sender: AcknowledgementSender,
        shutdown: TaskClient,
@@ -321,33 +304,26 @@ where
        <S::KeyStore as KeyStore>::StorageError: Send + Sync + 'static,
        <S::CredentialStore as CredentialStorage>::StorageError: Send + Sync + 'static,
    {
-        let gateway_id = self.gateway_config.gateway_id.clone();
-        if gateway_id.is_empty() {
-            return Err(ClientCoreError::GatewayIdUnknown);
-        }
-        let gateway_address = self.gateway_config.gateway_listener.clone();
-        if gateway_address.is_empty() {
-            return Err(ClientCoreError::GatewayAddressUnknown);
-        }
+        let gateway_address = gateway_config.gateway_listener.clone();
+        let gateway_id = gateway_config.gateway_id;

+        // TODO: in theory, at this point, this should be infallible
        let gateway_identity = identity::PublicKey::from_base58_string(gateway_id)
            .map_err(ClientCoreError::UnableToCreatePublicKeyFromGatewayId)?;

        let mut gateway_client = GatewayClient::new(
            gateway_address,
-            self.managed_keys.identity_keypair(),
+            managed_keys.identity_keypair(),
            gateway_identity,
-            self.managed_keys.gateway_shared_key(),
+            Some(managed_keys.must_get_gateway_shared_key()),
            mixnet_message_sender,
            ack_sender,
-            self.debug_config
-                .gateway_connection
-                .gateway_response_timeout,
-            self.bandwidth_controller.take(),
+            config.debug.gateway_connection.gateway_response_timeout,
+            bandwidth_controller,
            shutdown,
        );

-        gateway_client.set_disabled_credentials_mode(self.disabled_credentials);
+        gateway_client.set_disabled_credentials_mode(config.client.disabled_credentials_mode);

        let shared_key = gateway_client
            .authenticate_and_start()
@@ -356,20 +332,15 @@ where
                log::error!("Could not authenticate and start up the gateway connection - {err}")
            })?;

-        self.managed_keys
-            .deal_with_gateway_key(shared_key, &self.key_store)
-            .await
-            .map_err(|source| ClientCoreError::KeyStoreError {
-                source: Box::new(source),
-            })?;
+        managed_keys.ensure_gateway_key(shared_key);

        Ok(gateway_client)
    }

    fn setup_topology_provider(
-        custom_provider: Option<Box<dyn TopologyProvider>>,
+        custom_provider: Option<Box<dyn TopologyProvider + Send + Sync>>,
        nym_api_urls: Vec<Url>,
-    ) -> Box<dyn TopologyProvider> {
+    ) -> Box<dyn TopologyProvider + Send + Sync> {
        // if no custom provider was ... provided ..., create one using nym-api
        custom_provider.unwrap_or_else(|| {
            Box::new(NymApiTopologyProvider::new(
@@ -382,7 +353,7 @@ where
    // future responsible for periodically polling directory server and updating
    // the current global view of topology
    async fn start_topology_refresher(
-        topology_provider: Box<dyn TopologyProvider>,
+        topology_provider: Box<dyn TopologyProvider + Send + Sync>,
        topology_config: config::Topology,
        topology_accessor: TopologyAccessor,
        mut shutdown: TaskClient,
@@ -422,7 +393,7 @@ where
        Ok(())
    }

-    // controller for sending sphinx packets to mixnet (either real traffic or cover traffic)
+    // controller for sending packets to mixnet (either real traffic or cover traffic)
    // TODO: if we want to send control messages to gateway_client, this CAN'T take the ownership
    // over it. Perhaps GatewayClient needs to be thread-shareable or have some channel for
    // requests?
@@ -467,21 +438,41 @@ where
        Ok(mem_store)
    }

-    async fn initial_key_setup(&mut self) {
-        assert!(!self.managed_keys.is_valid());
-        let mut rng = thread_rng();
-        self.managed_keys = ManagedKeys::load_or_generate(&mut rng, &self.key_store).await;
+    async fn initialise_keys_and_gateway(&self) -> Result<InitialisationDetails, ClientCoreError>
+    where
+        <S::KeyStore as KeyStore>::StorageError: Sync + Send,
+        <S::GatewayDetailsStore as GatewayDetailsStore>::StorageError: Sync + Send,
+    {
+        setup_gateway(
+            &self.setup_method,
+            self.client_store.key_store(),
+            self.client_store.gateway_details_store(),
+            false,
+            Some(&self.config.client.nym_api_urls),
+        )
+        .await
    }

    pub async fn start_base(mut self) -> Result<BaseClient, ClientCoreError>
    where
-        <S::ReplyStore as ReplyStorageBackend>::StorageError: Sync + Send,
        S::ReplyStore: Send + Sync,
        <S::KeyStore as KeyStore>::StorageError: Send + Sync,
+        <S::ReplyStore as ReplyStorageBackend>::StorageError: Sync + Send,
        <S::CredentialStore as CredentialStorage>::StorageError: Send + Sync + 'static,
+        <S::GatewayDetailsStore as GatewayDetailsStore>::StorageError: Sync + Send,
    {
        info!("Starting nym client");
-        self.initial_key_setup().await;
+
+        // derive (or load) client keys and gateway configuration
+        let details = self.initialise_keys_and_gateway().await?;
+        let gateway_config = details.gateway_details;
+        let managed_keys = details.managed_keys;
+
+        let (reply_storage_backend, credential_store) = self.client_store.into_runtime_stores();
+
+        let bandwidth_controller = self
+            .dkg_query_client
+            .map(|client| BandwidthController::new(credential_store, client));

        // channels for inter-component communication
        // TODO: make the channels be internally created by the relevant components
@@ -509,34 +500,39 @@ where
        let (reply_controller_sender, reply_controller_receiver) =
            reply_controller::requests::new_control_channels();

-        let self_address = self.as_mix_recipient();
+        let self_address = Self::mix_address(&managed_keys, &gateway_config);

        // the components are started in very specific order. Unless you know what you are doing,
        // do not change that.
-        let gateway_client = self
-            .start_gateway_client(mixnet_messages_sender, ack_sender, task_manager.subscribe())
-            .await?;
-
-        let reply_storage = Self::setup_persistent_reply_storage(
-            self.reply_storage_backend,
+        let gateway_client = Self::start_gateway_client(
+            self.config,
+            gateway_config,
+            &managed_keys,
+            bandwidth_controller,
+            mixnet_messages_sender,
+            ack_sender,
            task_manager.subscribe(),
        )
        .await?;

+        let reply_storage =
+            Self::setup_persistent_reply_storage(reply_storage_backend, task_manager.subscribe())
+                .await?;
+
        let topology_provider = Self::setup_topology_provider(
            self.custom_topology_provider.take(),
-            self.nym_api_endpoints,
+            self.config.get_nym_api_endpoints(),
        );
        Self::start_topology_refresher(
            topology_provider,
-            self.debug_config.topology,
+            self.config.debug.topology,
            shared_topology_accessor.clone(),
            task_manager.subscribe(),
        )
        .await?;

        Self::start_received_messages_buffer_controller(
-            self.managed_keys.encryption_keypair(),
+            managed_keys.encryption_keypair(),
            received_buffer_request_receiver,
            mixnet_messages_receiver,
            reply_storage.key_storage(),
@@ -544,11 +540,11 @@ where
            task_manager.subscribe(),
        );

-        // The sphinx_message_sender is the transmitter for any component generating sphinx packets
+        // The message_sender is the transmitter for any component generating sphinx packets
        // that are to be sent to the mixnet. They are used by cover traffic stream and real
        // traffic stream.
        // The MixTrafficController then sends the actual traffic
-        let sphinx_message_sender =
+        let message_sender =
            Self::start_mix_traffic_controller(gateway_client, task_manager.subscribe());

        // Channels that the websocket listener can use to signal downstream to the real traffic
@@ -560,8 +556,8 @@ where
        let shared_lane_queue_lengths = LaneQueueLengths::new();

        let controller_config = real_messages_control::Config::new(
-            self.debug_config,
-            self.managed_keys.ack_key(),
+            &self.config.debug,
+            managed_keys.ack_key(),
            self_address,
        );

@@ -570,26 +566,28 @@ where
            shared_topology_accessor.clone(),
            ack_receiver,
            input_receiver,
-            sphinx_message_sender.clone(),
+            message_sender.clone(),
            reply_storage,
            reply_controller_sender.clone(),
            reply_controller_receiver,
            shared_lane_queue_lengths.clone(),
            client_connection_rx,
            task_manager.subscribe(),
+            self.config.debug.traffic.packet_type,
        );

        if !self
-            .debug_config
+            .config
+            .debug
            .cover_traffic
            .disable_loop_cover_traffic_stream
        {
            Self::start_cover_traffic_stream(
-                self.debug_config,
-                self.managed_keys.ack_key(),
+                &self.config.debug,
+                managed_keys.ack_key(),
                self_address,
                shared_topology_accessor.clone(),
-                sphinx_message_sender,
+                message_sender,
                task_manager.subscribe(),
            );
        }
@@ -101,8 +101,8 @@ pub async fn setup_fs_reply_surb_backend<P: AsRef<Path>>(
    }
 }

-pub fn create_bandwidth_controller<T, St: CredentialStorage>(
-    config: &Config<T>,
+pub fn create_bandwidth_controller<St: CredentialStorage>(
+    config: &Config,
    storage: St,
 ) -> BandwidthController<Client<QueryNyxdClient>, St> {
    let nyxd_url = config
@@ -122,13 +122,30 @@ pub fn create_bandwidth_controller_with_urls<St: CredentialStorage>(
    nym_api_url: Url,
    storage: St,
 ) -> BandwidthController<Client<QueryNyxdClient>, St> {
+    let client = default_query_dkg_client(nyxd_url, nym_api_url);
+
+    BandwidthController::new(storage, client)
+}
+
+pub fn default_query_dkg_client_from_config(config: &Config) -> Client<QueryNyxdClient> {
+    let nyxd_url = config
+        .get_validator_endpoints()
+        .pop()
+        .expect("No nyxd validator endpoint provided");
+    let api_url = config
+        .get_nym_api_endpoints()
+        .pop()
+        .expect("No validator api endpoint provided");
+
+    default_query_dkg_client(nyxd_url, api_url)
+}
+
+pub fn default_query_dkg_client(nyxd_url: Url, nym_api_url: Url) -> Client<QueryNyxdClient> {
    let details = nym_network_defaults::NymNetworkDetails::new_from_env();
    let mut client_config = nym_validator_client::Config::try_from_nym_network_details(&details)
        .expect("failed to construct validator client config");
    // overwrite env configuration with config URLs
    client_config = client_config.with_urls(nyxd_url, nym_api_url);
-    let client = nym_validator_client::Client::new_query(client_config)
-        .expect("Could not construct query client");
-
-    BandwidthController::new(storage, client)
+    nym_validator_client::Client::new_query(client_config)
+        .expect("Could not construct query client")
 }
@@ -0,0 +1,201 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::config::GatewayEndpointConfig;
+use async_trait::async_trait;
+use nym_gateway_requests::registration::handshake::SharedKeys;
+use serde::{Deserialize, Serialize};
+use sha2::{Digest, Sha256};
+use std::error::Error;
+use std::ops::Deref;
+use tokio::sync::Mutex;
+use zeroize::Zeroizing;
+
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
+pub trait GatewayDetailsStore {
+    type StorageError: Error;
+
+    async fn load_gateway_details(&self) -> Result<PersistedGatewayDetails, Self::StorageError>;
+
+    async fn store_gateway_details(
+        &self,
+        details: &PersistedGatewayDetails,
+    ) -> Result<(), Self::StorageError>;
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PersistedGatewayDetails {
+    // TODO: should we also verify correctness of the details themselves?
+    // i.e. we could include a checksum or tag (via the shared keys)
+    // counterargument: if we wanted to modify, say, the host information in the stored file on disk,
+    // in order to actually use it, we'd have to recompute the whole checksum which would be a huge pain.
+    /// The hash of the shared keys to ensure the correct ones are used with those gateway details.
+    #[serde(with = "base64")]
+    key_hash: Vec<u8>,
+
+    /// Actual gateway details being persisted.
+    pub(crate) details: GatewayEndpointConfig,
+}
+
+impl From<PersistedGatewayDetails> for GatewayEndpointConfig {
+    fn from(value: PersistedGatewayDetails) -> Self {
+        value.details
+    }
+}
+
+impl PersistedGatewayDetails {
+    pub fn new(details: GatewayEndpointConfig, shared_key: &SharedKeys) -> Self {
+        let key_bytes = Zeroizing::new(shared_key.to_bytes());
+
+        let mut key_hasher = Sha256::new();
+        key_hasher.update(&key_bytes);
+        let key_hash = key_hasher.finalize().to_vec();
+
+        PersistedGatewayDetails { key_hash, details }
+    }
+
+    pub fn verify(&self, shared_key: &SharedKeys) -> bool {
+        let key_bytes = Zeroizing::new(shared_key.to_bytes());
+
+        let mut key_hasher = Sha256::new();
+        key_hasher.update(&key_bytes);
+        let key_hash = key_hasher.finalize();
+
+        self.key_hash == key_hash.deref()
+    }
+}
+
+// helper to make Vec<u8> serialization use base64 representation to make it human readable
+// so that it would be easier for users to copy contents from the disk if they wanted to use it elsewhere
+mod base64 {
+    use base64::{engine::general_purpose::STANDARD, Engine as _};
+    use serde::{Deserialize, Deserializer, Serializer};
+
+    pub fn serialize<S: Serializer>(bytes: &[u8], serializer: S) -> Result<S::Ok, S::Error> {
+        serializer.serialize_str(&STANDARD.encode(bytes))
+    }
+
+    pub fn deserialize<'de, D: Deserializer<'de>>(deserializer: D) -> Result<Vec<u8>, D::Error> {
+        let s = <String>::deserialize(deserializer)?;
+        STANDARD.decode(s).map_err(serde::de::Error::custom)
+    }
+}
+
+#[cfg(not(target_arch = "wasm32"))]
+#[derive(Debug, thiserror::Error)]
+pub enum OnDiskGatewayDetailsError {
+    #[error("JSON failure: {0}")]
+    SerializationFailure(#[from] serde_json::Error),
+
+    #[error("failed to store gateway details to {path}: {err}")]
+    StoreFailure {
+        path: String,
+        #[source]
+        err: std::io::Error,
+    },
+
+    #[error("failed to load gateway details from {path}: {err}")]
+    LoadFailure {
+        path: String,
+        #[source]
+        err: std::io::Error,
+    },
+}
+
+#[cfg(not(target_arch = "wasm32"))]
+pub struct OnDiskGatewayDetails {
+    file_location: std::path::PathBuf,
+}
+
+#[cfg(not(target_arch = "wasm32"))]
+impl OnDiskGatewayDetails {
+    pub fn new<P: AsRef<std::path::Path>>(path: P) -> Self {
+        OnDiskGatewayDetails {
+            file_location: path.as_ref().to_owned(),
+        }
+    }
+
+    pub fn load_from_disk(&self) -> Result<PersistedGatewayDetails, OnDiskGatewayDetailsError> {
+        let file = std::fs::File::open(&self.file_location).map_err(|err| {
+            OnDiskGatewayDetailsError::LoadFailure {
+                path: self.file_location.display().to_string(),
+                err,
+            }
+        })?;
+
+        Ok(serde_json::from_reader(file)?)
+    }
+
+    pub fn store_to_disk(
+        &self,
+        details: &PersistedGatewayDetails,
+    ) -> Result<(), OnDiskGatewayDetailsError> {
+        // ensure the whole directory structure exists
+        if let Some(parent_dir) = &self.file_location.parent() {
+            std::fs::create_dir_all(parent_dir).map_err(|err| {
+                OnDiskGatewayDetailsError::StoreFailure {
+                    path: self.file_location.display().to_string(),
+                    err,
+                }
+            })?
+        }
+
+        let file = std::fs::File::create(&self.file_location).map_err(|err| {
+            OnDiskGatewayDetailsError::StoreFailure {
+                path: self.file_location.display().to_string(),
+                err,
+            }
+        })?;
+
+        Ok(serde_json::to_writer_pretty(file, details)?)
+    }
+}
+
+#[cfg(not(target_arch = "wasm32"))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
+impl GatewayDetailsStore for OnDiskGatewayDetails {
+    type StorageError = OnDiskGatewayDetailsError;
+
+    async fn load_gateway_details(&self) -> Result<PersistedGatewayDetails, Self::StorageError> {
+        self.load_from_disk()
+    }
+
+    async fn store_gateway_details(
+        &self,
+        gateway_details: &PersistedGatewayDetails,
+    ) -> Result<(), Self::StorageError> {
+        self.store_to_disk(gateway_details)
+    }
+}
+
+#[derive(Default)]
+pub struct InMemGatewayDetails {
+    details: Mutex<Option<PersistedGatewayDetails>>,
+}
+
+#[derive(Debug, thiserror::Error)]
+#[error("old ephemeral gateway details can't be loaded from storage")]
+pub struct EphemeralGatewayDetailsError;
+
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
+impl GatewayDetailsStore for InMemGatewayDetails {
+    type StorageError = EphemeralGatewayDetailsError;
+
+    async fn load_gateway_details(&self) -> Result<PersistedGatewayDetails, Self::StorageError> {
+        self.details
+            .lock()
+            .await
+            .clone()
+            .ok_or(EphemeralGatewayDetailsError)
+    }
+
+    async fn store_gateway_details(
+        &self,
+        gateway_details: &PersistedGatewayDetails,
+    ) -> Result<(), Self::StorageError> {
+        *self.details.lock().await = Some(gateway_details.clone());
+        Ok(())
+    }
+}
@@ -4,41 +4,57 @@
 // TODO: combine those more closely. Perhaps into a single underlying store.
 // Like for persistent, on-disk, storage, what's the point of having 3 different databases?

+use crate::client::base_client::storage::gateway_details::{
+    GatewayDetailsStore, InMemGatewayDetails,
+};
 use crate::client::key_manager::persistence::{InMemEphemeralKeys, KeyStore};
 use crate::client::replies::reply_storage;
 use crate::client::replies::reply_storage::ReplyStorageBackend;
-use nym_credential_storage::ephemeral_storage::{
-    EphemeralStorage as EphemeralCredentialStorage, EphemeralStorage,
-};
+use nym_credential_storage::ephemeral_storage::EphemeralStorage as EphemeralCredentialStorage;
 use nym_credential_storage::storage::Storage as CredentialStorage;

-#[cfg(not(target_arch = "wasm32"))]
+#[cfg(all(not(target_arch = "wasm32"), feature = "fs-surb-storage"))]
+use crate::client::base_client::non_wasm_helpers;
+#[cfg(all(not(target_arch = "wasm32"), feature = "fs-surb-storage"))]
+use crate::client::base_client::storage::gateway_details::OnDiskGatewayDetails;
+#[cfg(all(not(target_arch = "wasm32"), feature = "fs-surb-storage"))]
 use crate::client::key_manager::persistence::OnDiskKeys;
-
-#[cfg(not(target_arch = "wasm32"))]
+#[cfg(all(not(target_arch = "wasm32"), feature = "fs-surb-storage"))]
+use crate::client::replies::reply_storage::fs_backend;
+#[cfg(all(not(target_arch = "wasm32"), feature = "fs-surb-storage"))]
+use crate::config::{self, disk_persistence::CommonClientPaths};
+#[cfg(all(not(target_arch = "wasm32"), feature = "fs-surb-storage"))]
+use crate::error::ClientCoreError;
+#[cfg(all(not(target_arch = "wasm32"), feature = "fs-surb-storage"))]
 use nym_credential_storage::persistent_storage::PersistentStorage as PersistentCredentialStorage;

-#[cfg(not(target_arch = "wasm32"))]
-use crate::client::replies::reply_storage::fs_backend;
+pub mod gateway_details;

+// TODO: ideally this should be changed into
+// `MixnetClientStorage: KeyStore + ReplyStorageBackend + CredentialStorage + GatewayDetailsStore`
 pub trait MixnetClientStorage {
    type KeyStore: KeyStore;
    type ReplyStore: ReplyStorageBackend;
    type CredentialStore: CredentialStorage;
+    type GatewayDetailsStore: GatewayDetailsStore;

    // this is a TERRIBLE name...
-    fn into_split(self) -> (Self::KeyStore, Self::ReplyStore, Self::CredentialStore);
+    // fn into_split(self) -> (Self::KeyStore, Self::ReplyStore, Self::CredentialStore, Self::GatewayDetailsStore);
+
+    fn into_runtime_stores(self) -> (Self::ReplyStore, Self::CredentialStore);

    fn key_store(&self) -> &Self::KeyStore;
    fn reply_store(&self) -> &Self::ReplyStore;
    fn credential_store(&self) -> &Self::CredentialStore;
+    fn gateway_details_store(&self) -> &Self::GatewayDetailsStore;
 }

 #[derive(Default)]
 pub struct Ephemeral {
    key_store: InMemEphemeralKeys,
    reply_store: reply_storage::Empty,
-    credential_store: EphemeralStorage,
+    credential_store: EphemeralCredentialStorage,
+    gateway_details_store: InMemGatewayDetails,
 }

 impl Ephemeral {
@@ -51,9 +67,10 @@ impl MixnetClientStorage for Ephemeral {
    type KeyStore = InMemEphemeralKeys;
    type ReplyStore = reply_storage::Empty;
    type CredentialStore = EphemeralCredentialStorage;
+    type GatewayDetailsStore = InMemGatewayDetails;

-    fn into_split(self) -> (Self::KeyStore, Self::ReplyStore, Self::CredentialStore) {
-        (self.key_store, self.reply_store, self.credential_store)
+    fn into_runtime_stores(self) -> (Self::ReplyStore, Self::CredentialStore) {
+        (self.reply_store, self.credential_store)
    }

    fn key_store(&self) -> &Self::KeyStore {
@@ -67,38 +84,71 @@ impl MixnetClientStorage for Ephemeral {
    fn credential_store(&self) -> &Self::CredentialStore {
        &self.credential_store
    }
+
+    fn gateway_details_store(&self) -> &Self::GatewayDetailsStore {
+        &self.gateway_details_store
+    }
 }

-#[cfg(not(target_arch = "wasm32"))]
+#[cfg(all(not(target_arch = "wasm32"), feature = "fs-surb-storage"))]
 pub struct OnDiskPersistent {
    pub(crate) key_store: OnDiskKeys,
    pub(crate) reply_store: fs_backend::Backend,
    pub(crate) credential_store: PersistentCredentialStorage,
+    pub(crate) gateway_details_store: OnDiskGatewayDetails,
 }

-#[cfg(not(target_arch = "wasm32"))]
+#[cfg(all(not(target_arch = "wasm32"), feature = "fs-surb-storage"))]
 impl OnDiskPersistent {
    pub fn new(
        key_store: OnDiskKeys,
        reply_store: fs_backend::Backend,
        credential_store: PersistentCredentialStorage,
+        gateway_details_store: OnDiskGatewayDetails,
    ) -> Self {
        Self {
            key_store,
            reply_store,
            credential_store,
+            gateway_details_store,
        }
    }
+
+    pub async fn from_paths(
+        paths: CommonClientPaths,
+        debug_config: &config::DebugConfig,
+    ) -> Result<Self, ClientCoreError> {
+        let key_store = OnDiskKeys::new(paths.keys);
+
+        let reply_store = non_wasm_helpers::setup_fs_reply_surb_backend(
+            paths.reply_surb_database,
+            &debug_config.reply_surbs,
+        )
+        .await?;
+
+        let credential_store =
+            nym_credential_storage::initialise_persistent_storage(paths.credentials_database).await;
+
+        let gateway_details_store = OnDiskGatewayDetails::new(paths.gateway_details);
+
+        Ok(OnDiskPersistent {
+            key_store,
+            reply_store,
+            credential_store,
+            gateway_details_store,
+        })
+    }
 }

-#[cfg(not(target_arch = "wasm32"))]
+#[cfg(all(not(target_arch = "wasm32"), feature = "fs-surb-storage"))]
 impl MixnetClientStorage for OnDiskPersistent {
    type KeyStore = OnDiskKeys;
    type ReplyStore = fs_backend::Backend;
    type CredentialStore = PersistentCredentialStorage;
+    type GatewayDetailsStore = OnDiskGatewayDetails;

-    fn into_split(self) -> (Self::KeyStore, Self::ReplyStore, Self::CredentialStore) {
-        (self.key_store, self.reply_store, self.credential_store)
+    fn into_runtime_stores(self) -> (Self::ReplyStore, Self::CredentialStore) {
+        (self.reply_store, self.credential_store)
    }

    fn key_store(&self) -> &Self::KeyStore {
@@ -112,4 +162,8 @@ impl MixnetClientStorage for OnDiskPersistent {
    fn credential_store(&self) -> &Self::CredentialStore {
        &self.credential_store
    }
+
+    fn gateway_details_store(&self) -> &Self::GatewayDetailsStore {
+        &self.gateway_details_store
+    }
 }
@@ -10,7 +10,7 @@ use log::*;
 use nym_sphinx::acknowledgements::AckKey;
 use nym_sphinx::addressing::clients::Recipient;
 use nym_sphinx::cover::generate_loop_cover_packet;
-use nym_sphinx::params::PacketSize;
+use nym_sphinx::params::{PacketSize, PacketType};
 use nym_sphinx::utils::sample_poisson_duration;
 use rand::{rngs::OsRng, CryptoRng, Rng};
 use std::pin::Pin;
@@ -45,7 +45,7 @@ where
    #[cfg(target_arch = "wasm32")]
    next_delay: Pin<Box<wasm_timer::Delay>>,

-    /// Channel used for sending prepared sphinx packets to `MixTrafficController` that sends them
+    /// Channel used for sending prepared nym packets to `MixTrafficController` that sends them
    /// out to the network without any further delays.
    mix_tx: BatchMixMessageSender,

@@ -63,6 +63,8 @@ where

    /// Optional secondary predefined packet size used for the loop cover messages.
    secondary_packet_size: Option<PacketSize>,
+
+    packet_type: PacketType,
 }

 impl<R> Stream for LoopCoverTrafficStream<R>
@@ -135,6 +137,7 @@ impl LoopCoverTrafficStream<OsRng> {
            topology_access,
            primary_packet_size: traffic_config.primary_packet_size,
            secondary_packet_size: traffic_config.secondary_packet_size,
+            packet_type: traffic_config.packet_type,
        }
    }

@@ -194,6 +197,7 @@ impl LoopCoverTrafficStream<OsRng> {
            self.average_ack_delay,
            self.cover_traffic.loop_cover_traffic_average_delay,
            cover_traffic_packet_size,
+            self.packet_type,
        )
        .expect("Somehow failed to generate a loop cover message with a valid topology");

@@ -4,6 +4,7 @@
 use nym_sphinx::addressing::clients::Recipient;
 use nym_sphinx::anonymous_replies::requests::AnonymousSenderTag;
 use nym_sphinx::forwarding::packet::MixPacket;
+use nym_sphinx::params::PacketType;
 use nym_task::connections::TransmissionLane;

 pub type InputMessageSender = tokio::sync::mpsc::Sender<InputMessage>;
@@ -53,18 +54,49 @@ pub enum InputMessage {
        data: Vec<u8>,
        lane: TransmissionLane,
    },
+
+    MessageWrapper {
+        message: Box<InputMessage>,
+        packet_type: PacketType,
+    },
 }

 impl InputMessage {
-    pub fn new_premade(msgs: Vec<MixPacket>, lane: TransmissionLane) -> Self {
-        InputMessage::Premade { msgs, lane }
+    pub fn new_premade(
+        msgs: Vec<MixPacket>,
+        lane: TransmissionLane,
+        packet_type: PacketType,
+    ) -> Self {
+        let message = InputMessage::Premade { msgs, lane };
+        if packet_type == PacketType::Mix {
+            message
+        } else {
+            InputMessage::new_wrapper(message, packet_type)
+        }
    }

-    pub fn new_regular(recipient: Recipient, data: Vec<u8>, lane: TransmissionLane) -> Self {
-        InputMessage::Regular {
+    pub fn new_wrapper(message: InputMessage, packet_type: PacketType) -> Self {
+        InputMessage::MessageWrapper {
+            message: Box::new(message),
+            packet_type,
+        }
+    }
+
+    pub fn new_regular(
+        recipient: Recipient,
+        data: Vec<u8>,
+        lane: TransmissionLane,
+        packet_type: Option<PacketType>,
+    ) -> Self {
+        let message = InputMessage::Regular {
            recipient,
            data,
            lane,
+        };
+        if let Some(packet_type) = packet_type {
+            InputMessage::new_wrapper(message, packet_type)
+        } else {
+            message
        }
    }

@@ -73,12 +105,18 @@ impl InputMessage {
        data: Vec<u8>,
        reply_surbs: u32,
        lane: TransmissionLane,
+        packet_type: Option<PacketType>,
    ) -> Self {
-        InputMessage::Anonymous {
+        let message = InputMessage::Anonymous {
            recipient,
            data,
            reply_surbs,
            lane,
+        };
+        if let Some(packet_type) = packet_type {
+            InputMessage::new_wrapper(message, packet_type)
+        } else {
+            message
        }
    }

@@ -86,11 +124,17 @@ impl InputMessage {
        recipient_tag: AnonymousSenderTag,
        data: Vec<u8>,
        lane: TransmissionLane,
+        packet_type: Option<PacketType>,
    ) -> Self {
-        InputMessage::Reply {
+        let message = InputMessage::Reply {
            recipient_tag,
            data,
            lane,
+        };
+        if let Some(packet_type) = packet_type {
+            InputMessage::new_wrapper(message, packet_type)
+        } else {
+            message
        }
    }

@@ -100,6 +144,7 @@ impl InputMessage {
            | InputMessage::Anonymous { lane, .. }
            | InputMessage::Reply { lane, .. }
            | InputMessage::Premade { lane, .. } => lane,
+            InputMessage::MessageWrapper { message, .. } => message.lane(),
        }
    }
 }
@@ -6,6 +6,7 @@ use nym_crypto::asymmetric::{encryption, identity};
 use nym_gateway_requests::registration::handshake::SharedKeys;
 use nym_sphinx::acknowledgements::AckKey;
 use rand::{CryptoRng, RngCore};
+use std::fmt::{Debug, Formatter};
 use std::sync::Arc;
 use zeroize::ZeroizeOnDrop;

@@ -20,6 +21,16 @@ pub enum ManagedKeys {
    Invalidated,
 }

+impl Debug for ManagedKeys {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        match self {
+            ManagedKeys::Initial(_) => write!(f, "initial"),
+            ManagedKeys::FullyDerived(_) => write!(f, "fully derived"),
+            ManagedKeys::Invalidated => write!(f, "invalidated"),
+        }
+    }
+}
+
 impl From<KeyManagerBuilder> for ManagedKeys {
    fn from(value: KeyManagerBuilder) -> Self {
        ManagedKeys::Initial(value)
@@ -37,22 +48,27 @@ impl ManagedKeys {
        !matches!(self, ManagedKeys::Invalidated)
    }

-    pub async fn must_load<S: KeyStore>(key_store: &S) -> Result<Self, S::StorageError> {
+    pub async fn try_load<S: KeyStore>(key_store: &S) -> Result<Self, S::StorageError> {
        Ok(ManagedKeys::FullyDerived(
            KeyManager::load_keys(key_store).await?,
        ))
    }

+    pub fn generate_new<R>(rng: &mut R) -> Self
+    where
+        R: RngCore + CryptoRng,
+    {
+        ManagedKeys::Initial(KeyManagerBuilder::new(rng))
+    }
+
    pub async fn load_or_generate<R, S>(rng: &mut R, key_store: &S) -> Self
    where
        R: RngCore + CryptoRng,
        S: KeyStore,
    {
-        if let Ok(loaded) = KeyManager::load_keys(key_store).await {
-            ManagedKeys::FullyDerived(loaded)
-        } else {
-            ManagedKeys::Initial(KeyManagerBuilder::new(rng))
-        }
+        Self::try_load(key_store)
+            .await
+            .unwrap_or_else(|_| Self::generate_new(rng))
    }

    pub fn identity_keypair(&self) -> Arc<identity::KeyPair> {
@@ -79,6 +95,11 @@ impl ManagedKeys {
        }
    }

+    pub fn must_get_gateway_shared_key(&self) -> Arc<SharedKeys> {
+        self.gateway_shared_key()
+            .expect("failed to extract gateway shared key")
+    }
+
    pub fn gateway_shared_key(&self) -> Option<Arc<SharedKeys>> {
        match self {
            ManagedKeys::Initial(_) => None,
@@ -103,6 +124,17 @@ impl ManagedKeys {
        }
    }

+    pub fn ensure_gateway_key(&self, gateway_shared_key: Arc<SharedKeys>) {
+        if let ManagedKeys::FullyDerived(key_manager) = &self {
+            if !Arc::ptr_eq(&key_manager.gateway_shared_key, &gateway_shared_key)
+                || key_manager.gateway_shared_key != gateway_shared_key
+            {
+                // this should NEVER happen thus panic here
+                panic!("derived fresh gateway shared key whilst already holding one!")
+            }
+        }
+    }
+
    pub async fn deal_with_gateway_key<S: KeyStore>(
        &mut self,
        gateway_shared_key: Arc<SharedKeys>,
@@ -115,12 +147,7 @@ impl ManagedKeys {
                key_manager
            }
            ManagedKeys::FullyDerived(key_manager) => {
-                if !Arc::ptr_eq(&key_manager.gateway_shared_key, &gateway_shared_key)
-                    || key_manager.gateway_shared_key != gateway_shared_key
-                {
-                    // this should NEVER happen thus panic here
-                    panic!("derived fresh gateway shared key whilst already holding one!")
-                }
+                self.ensure_gateway_key(gateway_shared_key);
                key_manager
            }
            ManagedKeys::Invalidated => unreachable!("the managed keys got invalidated"),
@@ -4,9 +4,10 @@
 use crate::client::key_manager::KeyManager;
 use async_trait::async_trait;
 use std::error::Error;
+use tokio::sync::Mutex;

 #[cfg(not(target_arch = "wasm32"))]
-use crate::config::persistence::key_pathfinder::ClientKeyPathfinder;
+use crate::config::disk_persistence::keys_paths::ClientKeysPaths;
 #[cfg(not(target_arch = "wasm32"))]
 use nym_crypto::asymmetric::{encryption, identity};
 #[cfg(not(target_arch = "wasm32"))]
@@ -36,6 +37,7 @@ pub enum OnDiskKeysError {
    KeyPairLoadFailure {
        keys: String,
        paths: nym_pemstore::KeyPairPath,
+        #[source]
        err: std::io::Error,
    },

@@ -43,6 +45,7 @@ pub enum OnDiskKeysError {
    KeyPairStoreFailure {
        keys: String,
        paths: nym_pemstore::KeyPairPath,
+        #[source]
        err: std::io::Error,
    },

@@ -50,6 +53,7 @@ pub enum OnDiskKeysError {
    KeyLoadFailure {
        key: String,
        path: String,
+        #[source]
        err: std::io::Error,
    },

@@ -57,26 +61,47 @@ pub enum OnDiskKeysError {
    KeyStoreFailure {
        key: String,
        path: String,
+        #[source]
        err: std::io::Error,
    },
 }

 #[cfg(not(target_arch = "wasm32"))]
 pub struct OnDiskKeys {
-    pathfinder: ClientKeyPathfinder,
+    paths: ClientKeysPaths,
 }

 #[cfg(not(target_arch = "wasm32"))]
-impl From<ClientKeyPathfinder> for OnDiskKeys {
-    fn from(pathfinder: ClientKeyPathfinder) -> Self {
-        OnDiskKeys { pathfinder }
+impl From<ClientKeysPaths> for OnDiskKeys {
+    fn from(paths: ClientKeysPaths) -> Self {
+        OnDiskKeys { paths }
    }
 }

 #[cfg(not(target_arch = "wasm32"))]
 impl OnDiskKeys {
-    pub fn new(pathfinder: ClientKeyPathfinder) -> Self {
-        OnDiskKeys { pathfinder }
+    pub fn new(paths: ClientKeysPaths) -> Self {
+        OnDiskKeys { paths }
+    }
+
+    #[doc(hidden)]
+    pub fn ephemeral_load_gateway_keys(
+        &self,
+    ) -> Result<zeroize::Zeroizing<SharedKeys>, OnDiskKeysError> {
+        self.load_key(self.paths.gateway_shared_key(), "gateway shared keys")
+            .map(zeroize::Zeroizing::new)
+    }
+
+    #[doc(hidden)]
+    pub fn load_encryption_keypair(&self) -> Result<encryption::KeyPair, OnDiskKeysError> {
+        let encryption_paths = self.paths.encryption_key_pair_path();
+        self.load_keypair(encryption_paths, "encryption keys")
+    }
+
+    #[doc(hidden)]
+    pub fn load_identity_keypair(&self) -> Result<identity::KeyPair, OnDiskKeysError> {
+        let identity_paths = self.paths.identity_key_pair_path();
+        self.load_keypair(identity_paths, "identity keys")
    }

    fn load_key<T: PemStorableKey>(
@@ -132,17 +157,12 @@ impl OnDiskKeys {
    }

    fn load_keys(&self) -> Result<KeyManager, OnDiskKeysError> {
-        let identity_paths = self.pathfinder.identity_key_pair_path();
-        let encryption_paths = self.pathfinder.encryption_key_pair_path();
+        let identity_keypair = self.load_identity_keypair()?;
+        let encryption_keypair = self.load_encryption_keypair()?;

-        let identity_keypair: identity::KeyPair =
-            self.load_keypair(identity_paths, "identity keys")?;
-        let encryption_keypair: encryption::KeyPair =
-            self.load_keypair(encryption_paths, "encryption keys")?;
-
-        let ack_key: AckKey = self.load_key(self.pathfinder.ack_key(), "ack key")?;
+        let ack_key: AckKey = self.load_key(self.paths.ack_key(), "ack key")?;
        let gateway_shared_key: SharedKeys =
-            self.load_key(self.pathfinder.gateway_shared_key(), "gateway shared keys")?;
+            self.load_key(self.paths.gateway_shared_key(), "gateway shared keys")?;

        Ok(KeyManager::from_keys(
            identity_keypair,
@@ -153,8 +173,8 @@ impl OnDiskKeys {
    }

    fn store_keys(&self, keys: &KeyManager) -> Result<(), OnDiskKeysError> {
-        let identity_paths = self.pathfinder.identity_key_pair_path();
-        let encryption_paths = self.pathfinder.encryption_key_pair_path();
+        let identity_paths = self.paths.identity_key_pair_path();
+        let encryption_paths = self.paths.encryption_key_pair_path();

        self.store_keypair(
            keys.identity_keypair.as_ref(),
@@ -167,10 +187,10 @@ impl OnDiskKeys {
            "encryption keys",
        )?;

-        self.store_key(keys.ack_key.as_ref(), self.pathfinder.ack_key(), "ack key")?;
+        self.store_key(keys.ack_key.as_ref(), self.paths.ack_key(), "ack key")?;
        self.store_key(
            keys.gateway_shared_key.as_ref(),
-            self.pathfinder.gateway_shared_key(),
+            self.paths.gateway_shared_key(),
            "gateway shared keys",
        )?;

@@ -193,10 +213,12 @@ impl KeyStore for OnDiskKeys {
 }

 #[derive(Default)]
-pub struct InMemEphemeralKeys;
+pub struct InMemEphemeralKeys {
+    keys: Mutex<Option<KeyManager>>,
+}

 #[derive(Debug, thiserror::Error)]
-#[error("ephemeral keys can't be loaded from storage")]
+#[error("old ephemeral keys can't be loaded from storage")]
 pub struct EphemeralKeysError;

 #[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
@@ -205,10 +227,11 @@ impl KeyStore for InMemEphemeralKeys {
    type StorageError = EphemeralKeysError;

    async fn load_keys(&self) -> Result<KeyManager, Self::StorageError> {
-        Err(EphemeralKeysError)
+        self.keys.lock().await.clone().ok_or(EphemeralKeysError)
    }

-    async fn store_keys(&self, _keys: &KeyManager) -> Result<(), Self::StorageError> {
+    async fn store_keys(&self, keys: &KeyManager) -> Result<(), Self::StorageError> {
+        *self.keys.lock().await = Some(keys.clone());
        Ok(())
    }
 }
@@ -40,15 +40,15 @@ where
    pub fn new(
        gateway_client: GatewayClient<C, St>,
    ) -> (MixTrafficController<C, St>, BatchMixMessageSender) {
-        let (sphinx_message_sender, sphinx_message_receiver) =
+        let (message_sender, message_receiver) =
            tokio::sync::mpsc::channel(MIX_MESSAGE_RECEIVER_BUFFER_SIZE);
        (
            MixTrafficController {
                gateway_client,
-                mix_rx: sphinx_message_receiver,
+                mix_rx: message_receiver,
                consecutive_gateway_failure_count: 0,
            },
-            sphinx_message_sender,
+            message_sender,
        )
    }

@@ -71,7 +71,7 @@ impl AcknowledgementListener {
        while !shutdown.is_shutdown() {
            tokio::select! {
                acks = self.ack_receiver.next() => match acks {
-                    Some(acks) => self.handle_ack_receiver_item(acks).await,
+                    Some(acks) => {self.handle_ack_receiver_item(acks).await}
                    None => {
                        log::trace!("AcknowledgementListener: Stopping since channel closed");
                        break;
@@ -9,6 +9,7 @@ use log::*;
 use nym_sphinx::addressing::clients::Recipient;
 use nym_sphinx::anonymous_replies::requests::AnonymousSenderTag;
 use nym_sphinx::forwarding::packet::MixPacket;
+use nym_sphinx::params::PacketType;
 use nym_task::connections::TransmissionLane;
 use rand::{CryptoRng, Rng};

@@ -71,10 +72,11 @@ where
        recipient: Recipient,
        content: Vec<u8>,
        lane: TransmissionLane,
+        packet_type: PacketType,
    ) {
        if let Err(err) = self
            .message_handler
-            .try_send_plain_message(recipient, content, lane)
+            .try_send_plain_message(recipient, content, lane, packet_type)
            .await
        {
            warn!("failed to send a plain message - {err}")
@@ -87,10 +89,11 @@ where
        content: Vec<u8>,
        reply_surbs: u32,
        lane: TransmissionLane,
+        packet_type: PacketType,
    ) {
        if let Err(err) = self
            .message_handler
-            .try_send_message_with_reply_surbs(recipient, content, reply_surbs, lane)
+            .try_send_message_with_reply_surbs(recipient, content, reply_surbs, lane, packet_type)
            .await
        {
            warn!("failed to send a repliable message - {err}")
@@ -103,14 +106,17 @@ where
                recipient,
                data,
                lane,
-            } => self.handle_plain_message(recipient, data, lane).await,
+            } => {
+                self.handle_plain_message(recipient, data, lane, PacketType::Mix)
+                    .await
+            }
            InputMessage::Anonymous {
                recipient,
                data,
                reply_surbs,
                lane,
            } => {
-                self.handle_repliable_message(recipient, data, reply_surbs, lane)
+                self.handle_repliable_message(recipient, data, reply_surbs, lane, PacketType::Mix)
                    .await
            }
            InputMessage::Reply {
@@ -121,6 +127,40 @@ where
                self.handle_reply(recipient_tag, data, lane).await;
            }
            InputMessage::Premade { msgs, lane } => self.handle_premade_packets(msgs, lane).await,
+            InputMessage::MessageWrapper {
+                message,
+                packet_type,
+            } => match *message {
+                InputMessage::Regular {
+                    recipient,
+                    data,
+                    lane,
+                } => {
+                    self.handle_plain_message(recipient, data, lane, packet_type)
+                        .await
+                }
+                InputMessage::Anonymous {
+                    recipient,
+                    data,
+                    reply_surbs,
+                    lane,
+                } => {
+                    self.handle_repliable_message(recipient, data, reply_surbs, lane, packet_type)
+                        .await
+                }
+                InputMessage::Reply {
+                    recipient_tag,
+                    data,
+                    lane,
+                } => {
+                    self.handle_reply(recipient_tag, data, lane).await;
+                }
+                InputMessage::Premade { msgs, lane } => {
+                    self.handle_premade_packets(msgs, lane).await
+                }
+                // MessageWrappers can't be nested
+                InputMessage::MessageWrapper { .. } => unimplemented!(),
+            },
        };
    }

@@ -16,7 +16,7 @@ use futures::channel::mpsc;
 use log::*;
 use nym_gateway_client::AcknowledgementReceiver;
 use nym_sphinx::anonymous_replies::requests::AnonymousSenderTag;
-use nym_sphinx::params::PacketSize;
+use nym_sphinx::params::{PacketSize, PacketType};
 use nym_sphinx::{
    acknowledgements::AckKey,
    addressing::clients::Recipient,
@@ -249,7 +249,11 @@ where
        }
    }

-    pub(super) fn start_with_shutdown(self, shutdown: nym_task::TaskClient) {
+    pub(super) fn start_with_shutdown(
+        self,
+        shutdown: nym_task::TaskClient,
+        packet_type: PacketType,
+    ) {
        let mut acknowledgement_listener = self.acknowledgement_listener;
        let mut input_message_listener = self.input_message_listener;
        let mut retransmission_request_listener = self.retransmission_request_listener;
@@ -275,7 +279,7 @@ where
        let shutdown_handle = shutdown.clone();
        spawn_future(async move {
            retransmission_request_listener
-                .run_with_shutdown(shutdown_handle)
+                .run_with_shutdown(shutdown_handle, packet_type)
                .await;
            debug!("The retransmission request listener has finished execution!");
        });
@@ -11,9 +11,9 @@ use crate::client::real_messages_control::real_traffic_stream::RealMessage;
 use crate::client::replies::reply_controller::ReplyControllerSender;
 use futures::StreamExt;
 use log::*;
-use nym_sphinx::addressing::clients::Recipient;
 use nym_sphinx::chunking::fragment::Fragment;
 use nym_sphinx::preparer::PreparedFragment;
+use nym_sphinx::{addressing::clients::Recipient, params::PacketType};
 use nym_task::connections::TransmissionLane;
 use rand::{CryptoRng, Rng};
 use std::sync::{Arc, Weak};
@@ -48,17 +48,20 @@ where
        &mut self,
        packet_recipient: Recipient,
        chunk_data: Fragment,
+        packet_type: PacketType,
    ) -> Result<PreparedFragment, PreparationError> {
        debug!("retransmitting normal packet...");

+        // TODO: Figure out retransmission packet type signaling
        self.message_handler
-            .try_prepare_single_chunk_for_sending(packet_recipient, chunk_data)
+            .try_prepare_single_chunk_for_sending(packet_recipient, chunk_data, packet_type)
            .await
    }

    async fn on_retransmission_request(
        &mut self,
        weak_timed_out_ack: Weak<PendingAcknowledgement>,
+        packet_type: PacketType,
    ) {
        let timed_out_ack = match weak_timed_out_ack.upgrade() {
            Some(timed_out_ack) => timed_out_ack,
@@ -85,6 +88,7 @@ where
                self.prepare_normal_retransmission_chunk(
                    **recipient,
                    timed_out_ack.message_chunk.clone(),
+                    packet_type,
                )
                .await
            }
@@ -140,13 +144,17 @@ where
            .await
    }

-    pub(super) async fn run_with_shutdown(&mut self, mut shutdown: nym_task::TaskClient) {
+    pub(super) async fn run_with_shutdown(
+        &mut self,
+        mut shutdown: nym_task::TaskClient,
+        packet_type: PacketType,
+    ) {
        debug!("Started RetransmissionRequestListener with graceful shutdown support");

        while !shutdown.is_shutdown() {
            tokio::select! {
                timed_out_ack = self.request_receiver.next() => match timed_out_ack {
-                    Some(timed_out_ack) => self.on_retransmission_request(timed_out_ack).await,
+                    Some(timed_out_ack) => self.on_retransmission_request(timed_out_ack, packet_type).await,
                    None => {
                        log::trace!("RetransmissionRequestListener: Stopping since channel closed");
                        break;
@@ -15,7 +15,7 @@ use nym_sphinx::anonymous_replies::requests::{AnonymousSenderTag, RepliableMessa
 use nym_sphinx::anonymous_replies::{ReplySurb, SurbEncryptionKey};
 use nym_sphinx::chunking::fragment::{Fragment, FragmentIdentifier};
 use nym_sphinx::message::NymMessage;
-use nym_sphinx::params::{PacketSize, DEFAULT_NUM_MIX_HOPS};
+use nym_sphinx::params::{PacketSize, PacketType, DEFAULT_NUM_MIX_HOPS};
 use nym_sphinx::preparer::{MessagePreparer, PreparedFragment};
 use nym_sphinx::Delay;
 use nym_task::connections::TransmissionLane;
@@ -27,7 +27,7 @@ use std::time::Duration;
 use thiserror::Error;

 // TODO: move that error elsewhere since it seems to be contaminating different files
-#[derive(Debug, Clone, Error)]
+#[derive(Debug, Error)]
 pub enum PreparationError {
    #[error(transparent)]
    NymTopologyError(#[from] NymTopologyError),
@@ -417,9 +417,10 @@ where
        recipient: Recipient,
        message: Vec<u8>,
        lane: TransmissionLane,
+        packet_type: PacketType,
    ) -> Result<(), PreparationError> {
        let message = NymMessage::new_plain(message);
-        self.try_split_and_send_non_reply_message(message, recipient, lane)
+        self.try_split_and_send_non_reply_message(message, recipient, lane, packet_type)
            .await
    }

@@ -428,7 +429,9 @@ where
        message: NymMessage,
        recipient: Recipient,
        lane: TransmissionLane,
+        packet_type: PacketType,
    ) -> Result<(), PreparationError> {
+        debug!("Sending non-reply message with packet type {packet_type}");
        // TODO: I really dislike existence of this assertion, it implies code has to be re-organised
        debug_assert!(!matches!(message, NymMessage::Reply(_)));

@@ -436,7 +439,11 @@ where
        let topology_permit = self.topology_access.get_read_permit().await;
        let topology = self.get_topology(&topology_permit)?;

-        let packet_size = self.optimal_packet_size(&message);
+        let packet_size = if packet_type == PacketType::Outfox {
+            PacketSize::OutfoxRegularPacket
+        } else {
+            self.optimal_packet_size(&message)
+        };
        debug!("Using {packet_size} packets for {message}");
        let fragments = self
            .message_preparer
@@ -453,6 +460,7 @@ where
                topology,
                &self.config.ack_key,
                &recipient,
+                packet_type,
            )?;

            let real_message = RealMessage::new(
@@ -476,7 +484,9 @@ where
        &mut self,
        recipient: Recipient,
        amount: u32,
+        packet_type: PacketType,
    ) -> Result<(), PreparationError> {
+        debug!("Sending additional reply SURBs with packet type {packet_type}");
        let sender_tag = self.get_or_create_sender_tag(&recipient);
        let (reply_surbs, reply_keys) =
            self.generate_reply_surbs_with_keys(amount as usize).await?;
@@ -490,6 +500,7 @@ where
            message,
            recipient,
            TransmissionLane::AdditionalReplySurbs,
+            packet_type,
        )
        .await?;

@@ -505,7 +516,9 @@ where
        message: Vec<u8>,
        num_reply_surbs: u32,
        lane: TransmissionLane,
+        packet_type: PacketType,
    ) -> Result<(), SurbWrappedPreparationError> {
+        debug!("Sending message with reply SURBs with packet type {packet_type}");
        let sender_tag = self.get_or_create_sender_tag(&recipient);
        let (reply_surbs, reply_keys) = self
            .generate_reply_surbs_with_keys(num_reply_surbs as usize)
@@ -514,7 +527,7 @@ where
        let message =
            NymMessage::new_repliable(RepliableMessage::new_data(message, sender_tag, reply_surbs));

-        self.try_split_and_send_non_reply_message(message, recipient, lane)
+        self.try_split_and_send_non_reply_message(message, recipient, lane, packet_type)
            .await?;

        log::trace!("storing {} reply keys", reply_keys.len());
@@ -527,13 +540,21 @@ where
        &mut self,
        recipient: Recipient,
        chunk: Fragment,
+        packet_type: PacketType,
    ) -> Result<PreparedFragment, PreparationError> {
+        debug!("Sending single chunk with packet type {packet_type}");
        let topology_permit = self.topology_access.get_read_permit().await;
        let topology = self.get_topology(&topology_permit)?;

        let prepared_fragment = self
            .message_preparer
-            .prepare_chunk_for_sending(chunk, topology, &self.config.ack_key, &recipient)
+            .prepare_chunk_for_sending(
+                chunk,
+                topology,
+                &self.config.ack_key,
+                &recipient,
+                packet_type,
+            )
            .unwrap();

        Ok(prepared_fragment)
@@ -544,7 +565,7 @@ where
        fragments: Vec<Fragment>,
        reply_surbs: Vec<ReplySurb>,
    ) -> Result<Vec<PreparedFragment>, SurbWrappedPreparationError> {
-        debug_assert_ne!(
+        debug_assert_eq!(
            fragments.len(),
            reply_surbs.len(),
            "attempted to send {} fragments with {} reply surbs",
@@ -569,6 +590,7 @@ where
                        topology,
                        &self.config.ack_key,
                        reply_surb,
+                        PacketType::Mix,
                    )
                    .unwrap()
            })
@@ -588,7 +610,13 @@ where

        let prepared_fragment = self
            .message_preparer
-            .prepare_reply_chunk_for_sending(chunk, topology, &self.config.ack_key, reply_surb)
+            .prepare_reply_chunk_for_sending(
+                chunk,
+                topology,
+                &self.config.ack_key,
+                reply_surb,
+                PacketType::Mix,
+            )
            .unwrap();

        Ok(prepared_fragment)
@@ -26,6 +26,7 @@ use log::*;
 use nym_gateway_client::AcknowledgementReceiver;
 use nym_sphinx::acknowledgements::AckKey;
 use nym_sphinx::addressing::clients::Recipient;
+use nym_sphinx::params::PacketType;
 use nym_task::connections::{ConnectionCommandReceiver, LaneQueueLengths};
 use rand::{rngs::OsRng, CryptoRng, Rng};
 use std::sync::Arc;
@@ -207,7 +208,7 @@ impl RealMessagesController<OsRng> {
        }
    }

-    pub fn start_with_shutdown(self, shutdown: nym_task::TaskClient) {
+    pub fn start_with_shutdown(self, shutdown: nym_task::TaskClient, packet_type: PacketType) {
        let mut out_queue_control = self.out_queue_control;
        let ack_control = self.ack_control;
        let mut reply_control = self.reply_control;
@@ -223,6 +224,6 @@ impl RealMessagesController<OsRng> {
            debug!("The reply controller has finished execution!");
        });

-        ack_control.start_with_shutdown(shutdown);
+        ack_control.start_with_shutdown(shutdown, packet_type);
    }
 }
@@ -1,4 +1,4 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

 use self::sending_delay_controller::SendingDelayController;
@@ -92,7 +92,7 @@ where
    // messages.
    sending_delay_controller: SendingDelayController,

-    /// Channel used for sending prepared sphinx packets to `MixTrafficController` that sends them
+    /// Channel used for sending prepared packets to `MixTrafficController` that sends them
    /// out to the network without any further delays.
    mix_tx: BatchMixMessageSender,

@@ -136,7 +136,7 @@ impl From<PreparedFragment> for RealMessage {

 impl RealMessage {
    pub(crate) fn packet_size(&self) -> usize {
-        self.mix_packet.sphinx_packet().len()
+        self.mix_packet.packet().len()
    }

    pub(crate) fn new(mix_packet: MixPacket, fragment_id: Option<FragmentIdentifier>) -> Self {
@@ -247,6 +247,7 @@ where
                        self.config.average_ack_delay,
                        self.config.traffic.average_packet_delay,
                        cover_traffic_packet_size,
+                        self.config.traffic.packet_type,
                    )
                    .expect(
                        "Somehow failed to generate a loop cover message with a valid topology",
@@ -386,7 +387,7 @@ where

            // On every iteration we get new messages from upstream. Given that these come bunched
            // in `Vec`, this ensures that on average we will fetch messages faster than we can
-            // send, which is a condition for being able to multiplex sphinx packets from multiple
+            // send, which is a condition for being able to multiplex packets from multiple
            // data streams.
            match Pin::new(&mut self.real_receiver).poll_recv(cx) {
                // in the case our real message channel stream was closed, we should also indicate we are closed
@@ -512,7 +512,11 @@ where
            let to_send = min(remaining, 100);
            if let Err(err) = self
                .message_handler
-                .try_send_additional_reply_surbs(recipient, to_send)
+                .try_send_additional_reply_surbs(
+                    recipient,
+                    to_send,
+                    nym_sphinx::params::PacketType::Mix,
+                )
                .await
            {
                warn!("failed to send additional surbs to {recipient} - {err}");
@@ -26,7 +26,7 @@ impl TopologyRefresherConfig {
 }

 pub struct TopologyRefresher {
-    topology_provider: Box<dyn TopologyProvider>,
+    topology_provider: Box<dyn TopologyProvider + Send + Sync>,
    topology_accessor: TopologyAccessor,

    refresh_rate: Duration,
@@ -37,7 +37,7 @@ impl TopologyRefresher {
    pub fn new(
        cfg: TopologyRefresherConfig,
        topology_accessor: TopologyAccessor,
-        topology_provider: Box<dyn TopologyProvider>,
+        topology_provider: Box<dyn TopologyProvider + Send + Sync>,
    ) -> Self {
        TopologyRefresher {
            topology_provider,
@@ -47,7 +47,7 @@ impl TopologyRefresher {
        }
    }

-    pub fn change_topology_provider(&mut self, provider: Box<dyn TopologyProvider>) {
+    pub fn change_topology_provider(&mut self, provider: Box<dyn TopologyProvider + Send + Sync>) {
        self.topology_provider = provider;
    }

@@ -28,7 +28,7 @@ impl SizedData for RealMessage {

 impl SizedData for Fragment {
    fn data_size(&self) -> usize {
-        // note that raw `Fragment` is smaller than sphinx packet payload
+        // note that raw `Fragment` is smaller than packet payload
        // as it doesn't include surb-ack or the [shared] key materials
        self.payload_size()
    }
@@ -0,0 +1,117 @@
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use serde::{Deserialize, Serialize};
+use std::path::{Path, PathBuf};
+
+pub const DEFAULT_PRIVATE_IDENTITY_KEY_FILENAME: &str = "private_identity.pem";
+pub const DEFAULT_PUBLIC_IDENTITY_KEY_FILENAME: &str = "public_identity.pem";
+pub const DEFAULT_PRIVATE_ENCRYPTION_KEY_FILENAME: &str = "private_encryption.pem";
+pub const DEFAULT_PUBLIC_ENCRYPTION_KEY_FILENAME: &str = "public_encryption.pem";
+pub const DEFAULT_GATEWAY_SHARED_KEY_FILENAME: &str = "gateway_shared.pem";
+pub const DEFAULT_ACK_KEY_FILENAME: &str = "ack_key.pem";
+
+#[derive(Debug, Clone, Deserialize, PartialEq, Eq, Serialize)]
+pub struct ClientKeysPaths {
+    /// Path to file containing private identity key.
+    pub private_identity_key_file: PathBuf,
+
+    /// Path to file containing public identity key.
+    pub public_identity_key_file: PathBuf,
+
+    /// Path to file containing private encryption key.
+    pub private_encryption_key_file: PathBuf,
+
+    /// Path to file containing public encryption key.
+    pub public_encryption_key_file: PathBuf,
+
+    /// Path to file containing shared key derived with the specified gateway that is used
+    /// for all communication with it.
+    pub gateway_shared_key_file: PathBuf,
+
+    /// Path to file containing key used for encrypting and decrypting the content of an
+    /// acknowledgement so that nobody besides the client knows which packet it refers to.
+    pub ack_key_file: PathBuf,
+}
+
+impl ClientKeysPaths {
+    pub fn new_default<P: AsRef<Path>>(base_data_directory: P) -> Self {
+        let base_dir = base_data_directory.as_ref();
+
+        ClientKeysPaths {
+            private_identity_key_file: base_dir.join(DEFAULT_PRIVATE_IDENTITY_KEY_FILENAME),
+            public_identity_key_file: base_dir.join(DEFAULT_PUBLIC_IDENTITY_KEY_FILENAME),
+            private_encryption_key_file: base_dir.join(DEFAULT_PRIVATE_ENCRYPTION_KEY_FILENAME),
+            public_encryption_key_file: base_dir.join(DEFAULT_PUBLIC_ENCRYPTION_KEY_FILENAME),
+            gateway_shared_key_file: base_dir.join(DEFAULT_GATEWAY_SHARED_KEY_FILENAME),
+            ack_key_file: base_dir.join(DEFAULT_ACK_KEY_FILENAME),
+        }
+    }
+
+    pub fn identity_key_pair_path(&self) -> nym_pemstore::KeyPairPath {
+        nym_pemstore::KeyPairPath::new(
+            self.private_identity_key().to_path_buf(),
+            self.public_identity_key().to_path_buf(),
+        )
+    }
+
+    pub fn encryption_key_pair_path(&self) -> nym_pemstore::KeyPairPath {
+        nym_pemstore::KeyPairPath::new(
+            self.private_encryption_key().to_path_buf(),
+            self.public_encryption_key().to_path_buf(),
+        )
+    }
+
+    pub fn any_file_exists(&self) -> bool {
+        matches!(self.public_identity_key_file.try_exists(), Ok(true))
+            || matches!(self.private_identity_key_file.try_exists(), Ok(true))
+            || matches!(self.public_encryption_key_file.try_exists(), Ok(true))
+            || matches!(self.private_encryption_key_file.try_exists(), Ok(true))
+            || matches!(self.gateway_shared_key_file.try_exists(), Ok(true))
+            || matches!(self.ack_key_file.try_exists(), Ok(true))
+    }
+
+    pub fn any_file_exists_and_return(&self) -> Option<PathBuf> {
+        file_exists(&self.public_identity_key_file)
+            .or_else(|| file_exists(&self.private_identity_key_file))
+            .or_else(|| file_exists(&self.public_encryption_key_file))
+            .or_else(|| file_exists(&self.private_encryption_key_file))
+            .or_else(|| file_exists(&self.gateway_shared_key_file))
+            .or_else(|| file_exists(&self.ack_key_file))
+    }
+
+    pub fn gateway_key_file_exists(&self) -> bool {
+        matches!(self.gateway_shared_key_file.try_exists(), Ok(true))
+    }
+
+    pub fn private_identity_key(&self) -> &Path {
+        &self.private_identity_key_file
+    }
+
+    pub fn public_identity_key(&self) -> &Path {
+        &self.public_identity_key_file
+    }
+
+    pub fn private_encryption_key(&self) -> &Path {
+        &self.private_encryption_key_file
+    }
+
+    pub fn public_encryption_key(&self) -> &Path {
+        &self.public_encryption_key_file
+    }
+
+    pub fn gateway_shared_key(&self) -> &Path {
+        &self.gateway_shared_key_file
+    }
+
+    pub fn ack_key(&self) -> &Path {
+        &self.ack_key_file
+    }
+}
+
+fn file_exists(path: &Path) -> Option<PathBuf> {
+    if matches!(path.try_exists(), Ok(true)) {
+        return Some(path.to_path_buf());
+    }
+    None
+}
@@ -0,0 +1,42 @@
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::config::disk_persistence::keys_paths::ClientKeysPaths;
+use serde::{Deserialize, Serialize};
+use std::path::{Path, PathBuf};
+
+pub mod keys_paths;
+pub mod old_v1_1_20_2;
+
+pub const DEFAULT_GATEWAY_DETAILS_FILENAME: &str = "gateway_details.json";
+pub const DEFAULT_REPLY_SURB_DB_FILENAME: &str = "persistent_reply_store.sqlite";
+pub const DEFAULT_CREDENTIALS_DB_FILENAME: &str = "credentials_database.db";
+
+#[derive(Debug, Clone, Deserialize, PartialEq, Eq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct CommonClientPaths {
+    pub keys: ClientKeysPaths,
+
+    /// Path to the file containing information about gateway used by this client,
+    /// i.e. details such as its public key, owner address or the network information.
+    pub gateway_details: PathBuf,
+
+    /// Path to the database containing bandwidth credentials of this client.
+    pub credentials_database: PathBuf,
+
+    /// Path to the persistent store for received reply surbs, unused encryption keys and used sender tags.
+    pub reply_surb_database: PathBuf,
+}
+
+impl CommonClientPaths {
+    pub fn new_default<P: AsRef<Path>>(base_data_directory: P) -> Self {
+        let base_dir = base_data_directory.as_ref();
+
+        CommonClientPaths {
+            credentials_database: base_dir.join(DEFAULT_CREDENTIALS_DB_FILENAME),
+            reply_surb_database: base_dir.join(DEFAULT_REPLY_SURB_DB_FILENAME),
+            gateway_details: base_dir.join(DEFAULT_GATEWAY_DETAILS_FILENAME),
+            keys: ClientKeysPaths::new_default(base_data_directory),
+        }
+    }
+}
@@ -0,0 +1,30 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::config::disk_persistence::keys_paths::ClientKeysPaths;
+use crate::config::disk_persistence::{CommonClientPaths, DEFAULT_GATEWAY_DETAILS_FILENAME};
+use serde::{Deserialize, Serialize};
+use std::path::PathBuf;
+
+#[derive(Debug, Clone, Deserialize, PartialEq, Eq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct CommonClientPathsV1_1_20_2 {
+    pub keys: ClientKeysPaths,
+    pub credentials_database: PathBuf,
+    pub reply_surb_database: PathBuf,
+}
+
+impl CommonClientPathsV1_1_20_2 {
+    pub fn upgrade_default(self) -> CommonClientPaths {
+        let data_dir = self
+            .reply_surb_database
+            .parent()
+            .expect("client paths upgrade failure");
+        CommonClientPaths {
+            keys: self.keys,
+            gateway_details: data_dir.join(DEFAULT_GATEWAY_DETAILS_FILENAME),
+            credentials_database: self.credentials_database,
+            reply_surb_database: self.reply_surb_database,
+        }
+    }
+}
@@ -1,22 +1,21 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

 use nym_config::defaults::NymNetworkDetails;
-use nym_config::{NymConfig, OptionalSet, CRED_DB_FILE_NAME};
-use nym_sphinx::params::PacketSize;
+use nym_crypto::asymmetric::identity;
+use nym_sphinx::params::{PacketSize, PacketType};
 use serde::{Deserialize, Serialize};
-use std::marker::PhantomData;
-use std::path::PathBuf;
 use std::time::Duration;
 use url::Url;

+use crate::error::ClientCoreError;
 #[cfg(target_arch = "wasm32")]
 use wasm_bindgen::prelude::*;

+pub mod disk_persistence;
 pub mod old_config_v1_1_13;
-pub mod persistence;
-
-pub const MISSING_VALUE: &str = "MISSING VALUE";
+pub mod old_config_v1_1_20;
+pub mod old_config_v1_1_20_2;

 // 'DEBUG'
 const DEFAULT_ACK_WAIT_MULTIPLIER: f64 = 1.5;
@@ -57,141 +56,41 @@ const DEFAULT_MAXIMUM_REPLY_SURB_AGE: Duration = Duration::from_secs(12 * 60 * 6
 // 24 hours
 const DEFAULT_MAXIMUM_REPLY_KEY_AGE: Duration = Duration::from_secs(24 * 60 * 60);

-pub fn missing_string_value() -> String {
-    MISSING_VALUE.to_string()
-}
-
-pub trait ClientCoreConfigTrait {
-    fn get_gateway_endpoint(&self) -> &GatewayEndpointConfig;
-}
-
 #[derive(Debug, Clone, Deserialize, PartialEq, Serialize)]
 #[serde(deny_unknown_fields)]
-pub struct Config<T> {
-    client: Client<T>,
+pub struct Config {
+    pub client: Client,

    #[serde(default)]
-    logging: Logging,
-    #[serde(default)]
-    debug: DebugConfig,
+    pub debug: DebugConfig,
 }

-impl<T> ClientCoreConfigTrait for Config<T> {
-    fn get_gateway_endpoint(&self) -> &GatewayEndpointConfig {
-        &self.client.gateway_endpoint
+impl Config {
+    pub fn new<S: Into<String>>(id: S) -> Self {
+        Config {
+            client: Client::new_default(id),
+            debug: Default::default(),
+        }
    }
-}

-impl<T> OptionalSet for Config<T> where T: NymConfig {}
-
-impl<T> Config<T> {
-    pub fn new<S: Into<String>>(id: S) -> Self
-    where
-        T: NymConfig,
-    {
-        Config::default().with_id(id)
+    pub fn from_client_config(client: Client, debug: DebugConfig) -> Self {
+        Config { client, debug }
    }

    pub fn validate(&self) -> bool {
-        // no other sections have explicit requirements (yet)
        self.debug.validate()
    }

-    #[must_use]
-    pub fn with_id<S: Into<String>>(mut self, id: S) -> Self
-    where
-        T: NymConfig,
-    {
-        self.client.id = id.into();
-        self.set_empty_fields_to_defaults();
+    pub fn with_debug_config(mut self, debug: DebugConfig) -> Self {
+        self.debug = debug;
        self
    }

-    pub fn set_empty_fields_to_defaults(&mut self) -> bool
-    where
-        T: NymConfig,
-    {
-        let id = &self.client.id;
-        let mut changes_made = false;
-
-        // identity key setting
-        if self.client.private_identity_key_file.as_os_str().is_empty() {
-            changes_made = true;
-            self.client.private_identity_key_file =
-                self::Client::<T>::default_private_identity_key_file(id);
-        }
-        if self.client.public_identity_key_file.as_os_str().is_empty() {
-            changes_made = true;
-            self.client.public_identity_key_file =
-                self::Client::<T>::default_public_identity_key_file(id);
-        }
-
-        // encryption key setting
-        if self
-            .client
-            .private_encryption_key_file
-            .as_os_str()
-            .is_empty()
-        {
-            changes_made = true;
-            self.client.private_encryption_key_file =
-                self::Client::<T>::default_private_encryption_key_file(id);
-        }
-        if self
-            .client
-            .public_encryption_key_file
-            .as_os_str()
-            .is_empty()
-        {
-            changes_made = true;
-            self.client.public_encryption_key_file =
-                self::Client::<T>::default_public_encryption_key_file(id);
-        }
-
-        // shared gateway key setting
-        if self.client.gateway_shared_key_file.as_os_str().is_empty() {
-            changes_made = true;
-            self.client.gateway_shared_key_file =
-                self::Client::<T>::default_gateway_shared_key_file(id);
-        }
-
-        // ack key setting
-        if self.client.ack_key_file.as_os_str().is_empty() {
-            changes_made = true;
-            self.client.ack_key_file = self::Client::<T>::default_ack_key_file(id);
-        }
-
-        if self.client.reply_surb_database_path.as_os_str().is_empty() {
-            changes_made = true;
-            self.client.reply_surb_database_path =
-                self::Client::<T>::default_reply_surb_database_path(id);
-        }
-
-        if self.client.database_path.as_os_str().is_empty() {
-            changes_made = true;
-            self.client.database_path = self::Client::<T>::default_database_path(id);
-        }
-        changes_made
-    }
-
    pub fn with_disabled_credentials(mut self, disabled_credentials_mode: bool) -> Self {
        self.client.disabled_credentials_mode = disabled_credentials_mode;
        self
    }

-    pub fn set_gateway_endpoint(&mut self, gateway_endpoint: GatewayEndpointConfig) {
-        self.client.gateway_endpoint = gateway_endpoint;
-    }
-
-    pub fn with_gateway_endpoint(mut self, gateway_endpoint: GatewayEndpointConfig) -> Self {
-        self.client.gateway_endpoint = gateway_endpoint;
-        self
-    }
-
-    pub fn with_gateway_id<S: Into<String>>(&mut self, id: S) {
-        self.client.gateway_endpoint.gateway_id = id.into();
-    }
-
    pub fn with_custom_nyxd(mut self, urls: Vec<Url>) -> Self {
        self.client.nyxd_urls = urls;
        self
@@ -217,6 +116,11 @@ impl<T> Config<T> {
        self
    }

+    pub fn with_packet_type(mut self, packet_type: PacketType) -> Self {
+        self.debug.traffic.packet_type = packet_type;
+        self
+    }
+
    pub fn set_high_default_traffic_volume(&mut self) {
        self.debug.traffic.average_packet_delay = Duration::from_millis(10);
        // basically don't really send cover messages
@@ -233,6 +137,11 @@ impl<T> Config<T> {
        self
    }

+    pub fn with_disabled_topology_refresh(mut self, disable_topology_refresh: bool) -> Self {
+        self.debug.topology.disable_refreshing = disable_topology_refresh;
+        self
+    }
+
    pub fn set_no_cover_traffic(&mut self) {
        self.debug.cover_traffic.disable_loop_cover_traffic_stream = true;
        self.debug.traffic.disable_main_poisson_packet_distribution = true;
@@ -250,34 +159,6 @@ impl<T> Config<T> {
        self.client.disabled_credentials_mode
    }

-    pub fn get_nym_root_directory(&self) -> PathBuf {
-        self.client.nym_root_directory.clone()
-    }
-
-    pub fn get_private_identity_key_file(&self) -> PathBuf {
-        self.client.private_identity_key_file.clone()
-    }
-
-    pub fn get_public_identity_key_file(&self) -> PathBuf {
-        self.client.public_identity_key_file.clone()
-    }
-
-    pub fn get_private_encryption_key_file(&self) -> PathBuf {
-        self.client.private_encryption_key_file.clone()
-    }
-
-    pub fn get_public_encryption_key_file(&self) -> PathBuf {
-        self.client.public_encryption_key_file.clone()
-    }
-
-    pub fn get_gateway_shared_key_file(&self) -> PathBuf {
-        self.client.gateway_shared_key_file.clone()
-    }
-
-    pub fn get_ack_key_file(&self) -> PathBuf {
-        self.client.ack_key_file.clone()
-    }
-
    pub fn get_validator_endpoints(&self) -> Vec<Url> {
        self.client.nyxd_urls.clone()
    }
@@ -285,135 +166,6 @@ impl<T> Config<T> {
    pub fn get_nym_api_endpoints(&self) -> Vec<Url> {
        self.client.nym_api_urls.clone()
    }
-
-    pub fn get_gateway_id(&self) -> String {
-        self.client.gateway_endpoint.gateway_id.clone()
-    }
-
-    pub fn get_gateway_owner(&self) -> String {
-        self.client.gateway_endpoint.gateway_owner.clone()
-    }
-
-    pub fn get_gateway_listener(&self) -> String {
-        self.client.gateway_endpoint.gateway_listener.clone()
-    }
-
-    pub fn get_gateway_endpoint_config(&self) -> &GatewayEndpointConfig {
-        &self.client.gateway_endpoint
-    }
-
-    pub fn get_database_path(&self) -> PathBuf {
-        self.client.database_path.clone()
-    }
-
-    pub fn get_reply_surb_database_path(&self) -> PathBuf {
-        self.client.reply_surb_database_path.clone()
-    }
-
-    pub fn get_version(&self) -> &str {
-        &self.client.version
-    }
-
-    // Debug getters
-    pub fn get_debug_config(&self) -> &DebugConfig {
-        &self.debug
-    }
-
-    pub fn get_average_packet_delay(&self) -> Duration {
-        self.debug.traffic.average_packet_delay
-    }
-
-    pub fn get_average_ack_delay(&self) -> Duration {
-        self.debug.acknowledgements.average_ack_delay
-    }
-
-    pub fn get_ack_wait_multiplier(&self) -> f64 {
-        self.debug.acknowledgements.ack_wait_multiplier
-    }
-
-    pub fn get_ack_wait_addition(&self) -> Duration {
-        self.debug.acknowledgements.ack_wait_addition
-    }
-
-    pub fn get_loop_cover_traffic_average_delay(&self) -> Duration {
-        self.debug.cover_traffic.loop_cover_traffic_average_delay
-    }
-
-    pub fn get_message_sending_average_delay(&self) -> Duration {
-        self.debug.traffic.message_sending_average_delay
-    }
-
-    pub fn get_gateway_response_timeout(&self) -> Duration {
-        self.debug.gateway_connection.gateway_response_timeout
-    }
-
-    pub fn get_topology_refresh_rate(&self) -> Duration {
-        self.debug.topology.topology_refresh_rate
-    }
-
-    pub fn get_topology_resolution_timeout(&self) -> Duration {
-        self.debug.topology.topology_resolution_timeout
-    }
-
-    pub fn get_disabled_loop_cover_traffic_stream(&self) -> bool {
-        self.debug.cover_traffic.disable_loop_cover_traffic_stream
-    }
-
-    pub fn get_disabled_main_poisson_packet_distribution(&self) -> bool {
-        self.debug.traffic.disable_main_poisson_packet_distribution
-    }
-
-    pub fn get_minimum_reply_surb_storage_threshold(&self) -> usize {
-        self.debug.reply_surbs.minimum_reply_surb_storage_threshold
-    }
-
-    pub fn get_maximum_reply_surb_storage_threshold(&self) -> usize {
-        self.debug.reply_surbs.maximum_reply_surb_storage_threshold
-    }
-
-    pub fn get_minimum_reply_surb_request_size(&self) -> u32 {
-        self.debug.reply_surbs.minimum_reply_surb_request_size
-    }
-
-    pub fn get_maximum_reply_surb_request_size(&self) -> u32 {
-        self.debug.reply_surbs.maximum_reply_surb_request_size
-    }
-
-    pub fn get_maximum_allowed_reply_surb_request_size(&self) -> u32 {
-        self.debug
-            .reply_surbs
-            .maximum_allowed_reply_surb_request_size
-    }
-
-    pub fn get_maximum_reply_surb_rerequest_waiting_period(&self) -> Duration {
-        self.debug
-            .reply_surbs
-            .maximum_reply_surb_rerequest_waiting_period
-    }
-
-    pub fn get_maximum_reply_surb_drop_waiting_period(&self) -> Duration {
-        self.debug
-            .reply_surbs
-            .maximum_reply_surb_drop_waiting_period
-    }
-
-    pub fn get_maximum_reply_surb_age(&self) -> Duration {
-        self.debug.reply_surbs.maximum_reply_surb_age
-    }
-
-    pub fn get_maximum_reply_key_age(&self) -> Duration {
-        self.debug.reply_surbs.maximum_reply_key_age
-    }
-}
-
-impl<T: NymConfig> Default for Config<T> {
-    fn default() -> Self {
-        Config {
-            client: Client::<T>::default(),
-            logging: Default::default(),
-            debug: Default::default(),
-        }
-    }
 }

 #[derive(Clone, Debug, Default, Deserialize, PartialEq, Eq, Serialize)]
@@ -446,6 +198,14 @@ impl GatewayEndpointConfig {
    }
 }

+// separate block so it wouldn't be exported via wasm bindgen
+impl GatewayEndpointConfig {
+    pub fn try_get_gateway_identity_key(&self) -> Result<identity::PublicKey, ClientCoreError> {
+        identity::PublicKey::from_base58_string(&self.gateway_id)
+            .map_err(ClientCoreError::UnableToCreatePublicKeyFromGatewayId)
+    }
+}
+
 impl From<nym_topology::gateway::Node> for GatewayEndpointConfig {
    fn from(node: nym_topology::gateway::Node) -> GatewayEndpointConfig {
        let gateway_listener = node.clients_address();
@@ -458,9 +218,10 @@ impl From<nym_topology::gateway::Node> for GatewayEndpointConfig {
 }

 #[derive(Debug, Clone, Deserialize, PartialEq, Eq, Serialize)]
-pub struct Client<T> {
+// note: the deny_unknown_fields is VITAL here to allow upgrades from v1.1.20_2
+#[serde(deny_unknown_fields)]
+pub struct Client {
    /// Version of the client for which this configuration was created.
-    #[serde(default = "missing_string_value")]
    pub version: String,

    /// ID specifies the human readable ID of this particular client.
@@ -468,6 +229,7 @@ pub struct Client<T> {

    /// Indicates whether this client is running in a disabled credentials mode, thus attempting
    /// to claim bandwidth without presenting bandwidth credentials.
+    // TODO: this should be moved to `debug.gateway_connection`
    #[serde(default)]
    pub disabled_credentials_mode: bool,

@@ -478,50 +240,10 @@ pub struct Client<T> {
    /// Addresses to APIs running on validator from which the client gets the view of the network.
    #[serde(alias = "validator_api_urls")]
    pub nym_api_urls: Vec<Url>,
-
-    /// Path to file containing private identity key.
-    pub private_identity_key_file: PathBuf,
-
-    /// Path to file containing public identity key.
-    pub public_identity_key_file: PathBuf,
-
-    /// Path to file containing private encryption key.
-    pub private_encryption_key_file: PathBuf,
-
-    /// Path to file containing public encryption key.
-    pub public_encryption_key_file: PathBuf,
-
-    /// Path to file containing shared key derived with the specified gateway that is used
-    /// for all communication with it.
-    pub gateway_shared_key_file: PathBuf,
-
-    /// Path to file containing key used for encrypting and decrypting the content of an
-    /// acknowledgement so that nobody besides the client knows which packet it refers to.
-    pub ack_key_file: PathBuf,
-
-    /// Information regarding how the client should send data to gateway.
-    pub gateway_endpoint: GatewayEndpointConfig,
-
-    /// Path to the database containing bandwidth credentials of this client.
-    pub database_path: PathBuf,
-
-    /// Path to the persistent store for received reply surbs, unused encryption keys and used sender tags.
-    // this was set to use #[serde(default)] for the purposes of compatibility for multi-surbs introduced in 1.1.4.
-    // if you're reading this message and we have already introduced some breaking changes, feel free
-    // to remove that attribute since at this point the client configs should have gotten regenerated
-    #[serde(default)]
-    pub reply_surb_database_path: PathBuf,
-
-    /// nym_home_directory specifies absolute path to the home nym Clients directory.
-    /// It is expected to use default value and hence .toml file should not redefine this field.
-    pub nym_root_directory: PathBuf,
-
-    #[serde(skip)]
-    pub super_struct: PhantomData<T>,
 }

-impl<T: NymConfig> Default for Client<T> {
-    fn default() -> Self {
+impl Client {
+    pub fn new_default<S: Into<String>>(id: S) -> Self {
        let network = NymNetworkDetails::new_mainnet();
        let nyxd_urls = network
            .endpoints
@@ -534,70 +256,31 @@ impl<T: NymConfig> Default for Client<T> {
            .filter_map(|validator| validator.api_url())
            .collect::<Vec<_>>();

-        if nym_api_urls.is_empty() {
-            panic!("we do not have any default nym-api urls available!")
-        }
-
-        // there must be explicit checks for whether id is not empty later
        Client {
            version: env!("CARGO_PKG_VERSION").to_string(),
-            id: "".to_string(),
+            id: id.into(),
            disabled_credentials_mode: true,
            nyxd_urls,
            nym_api_urls,
-            private_identity_key_file: Default::default(),
-            public_identity_key_file: Default::default(),
-            private_encryption_key_file: Default::default(),
-            public_encryption_key_file: Default::default(),
-            gateway_shared_key_file: Default::default(),
-            ack_key_file: Default::default(),
-            gateway_endpoint: Default::default(),
-            database_path: Default::default(),
-            reply_surb_database_path: Default::default(),
-            nym_root_directory: T::default_root_directory(),
-            super_struct: Default::default(),
+        }
+    }
+
+    pub fn new<S: Into<String>>(
+        id: S,
+        disabled_credentials_mode: bool,
+        nyxd_urls: Vec<Url>,
+        nym_api_urls: Vec<Url>,
+    ) -> Self {
+        Client {
+            version: env!("CARGO_PKG_VERSION").to_string(),
+            id: id.into(),
+            disabled_credentials_mode,
+            nyxd_urls,
+            nym_api_urls,
        }
    }
 }

-impl<T: NymConfig> Client<T> {
-    fn default_private_identity_key_file(id: &str) -> PathBuf {
-        T::default_data_directory(id).join("private_identity.pem")
-    }
-
-    fn default_public_identity_key_file(id: &str) -> PathBuf {
-        T::default_data_directory(id).join("public_identity.pem")
-    }
-
-    fn default_private_encryption_key_file(id: &str) -> PathBuf {
-        T::default_data_directory(id).join("private_encryption.pem")
-    }
-
-    fn default_public_encryption_key_file(id: &str) -> PathBuf {
-        T::default_data_directory(id).join("public_encryption.pem")
-    }
-
-    fn default_gateway_shared_key_file(id: &str) -> PathBuf {
-        T::default_data_directory(id).join("gateway_shared.pem")
-    }
-
-    fn default_ack_key_file(id: &str) -> PathBuf {
-        T::default_data_directory(id).join("ack_key.pem")
-    }
-
-    fn default_reply_surb_database_path(id: &str) -> PathBuf {
-        T::default_data_directory(id).join("persistent_reply_store.sqlite")
-    }
-
-    fn default_database_path(id: &str) -> PathBuf {
-        T::default_data_directory(id).join(CRED_DB_FILE_NAME)
-    }
-}
-
-#[derive(Debug, Clone, Default, Deserialize, PartialEq, Eq, Serialize)]
-#[serde(deny_unknown_fields)]
-pub struct Logging {}
-
 #[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
 #[serde(default)]
 pub struct Traffic {
@@ -627,6 +310,8 @@ pub struct Traffic {
    /// Note that its use decreases overall anonymity.
    /// Do not set it it unless you understand the consequences of that change.
    pub secondary_packet_size: Option<PacketSize>,
+
+    pub packet_type: PacketType,
 }

 impl Traffic {
@@ -650,6 +335,7 @@ impl Default for Traffic {
            disable_main_poisson_packet_distribution: false,
            primary_packet_size: PacketSize::RegularPacket,
            secondary_packet_size: None,
+            packet_type: PacketType::Mix,
        }
    }
 }
@@ -1,19 +1,18 @@
 // Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use crate::config::{
-    Acknowledgements, Client, Config, CoverTraffic, DebugConfig, GatewayConnection, Logging,
-    ReplySurbs, Topology, Traffic, DEFAULT_ACK_WAIT_ADDITION, DEFAULT_ACK_WAIT_MULTIPLIER,
-    DEFAULT_AVERAGE_PACKET_DELAY, DEFAULT_GATEWAY_RESPONSE_TIMEOUT,
-    DEFAULT_LOOP_COVER_STREAM_AVERAGE_DELAY, DEFAULT_MAXIMUM_ALLOWED_SURB_REQUEST_SIZE,
-    DEFAULT_MAXIMUM_REPLY_KEY_AGE, DEFAULT_MAXIMUM_REPLY_SURB_AGE,
-    DEFAULT_MAXIMUM_REPLY_SURB_DROP_WAITING_PERIOD, DEFAULT_MAXIMUM_REPLY_SURB_REQUEST_SIZE,
-    DEFAULT_MAXIMUM_REPLY_SURB_REREQUEST_WAITING_PERIOD,
+use crate::config::old_config_v1_1_20::{
+    AcknowledgementsV1_1_20, ClientV1_1_20, ConfigV1_1_20, CoverTrafficV1_1_20, DebugConfigV1_1_20,
+    GatewayConnectionV1_1_20, LoggingV1_1_20, ReplySurbsV1_1_20, TopologyV1_1_20, TrafficV1_1_20,
+    DEFAULT_ACK_WAIT_ADDITION, DEFAULT_ACK_WAIT_MULTIPLIER, DEFAULT_AVERAGE_PACKET_DELAY,
+    DEFAULT_GATEWAY_RESPONSE_TIMEOUT, DEFAULT_LOOP_COVER_STREAM_AVERAGE_DELAY,
+    DEFAULT_MAXIMUM_ALLOWED_SURB_REQUEST_SIZE, DEFAULT_MAXIMUM_REPLY_KEY_AGE,
+    DEFAULT_MAXIMUM_REPLY_SURB_AGE, DEFAULT_MAXIMUM_REPLY_SURB_DROP_WAITING_PERIOD,
+    DEFAULT_MAXIMUM_REPLY_SURB_REQUEST_SIZE, DEFAULT_MAXIMUM_REPLY_SURB_REREQUEST_WAITING_PERIOD,
    DEFAULT_MAXIMUM_REPLY_SURB_STORAGE_THRESHOLD, DEFAULT_MESSAGE_STREAM_AVERAGE_DELAY,
    DEFAULT_MINIMUM_REPLY_SURB_REQUEST_SIZE, DEFAULT_MINIMUM_REPLY_SURB_STORAGE_THRESHOLD,
    DEFAULT_TOPOLOGY_REFRESH_RATE, DEFAULT_TOPOLOGY_RESOLUTION_TIMEOUT,
 };
-use nym_config::NymConfig;
 use nym_sphinx::params::PacketSize;
 use serde::{Deserialize, Serialize};
 use std::marker::PhantomData;
@@ -40,21 +39,21 @@ impl From<ExtendedPacketSize> for PacketSize {
 #[derive(Debug, Clone, Deserialize, PartialEq, Serialize)]
 #[serde(deny_unknown_fields)]
 pub struct OldConfigV1_1_13<T> {
-    pub client: Client<T>,
+    pub client: ClientV1_1_20<T>,

    #[serde(default)]
-    logging: Logging,
+    pub logging: OldLoggingV1_1_13,
    #[serde(default)]
-    debug: OldDebugConfigV1_1_13,
+    pub debug: OldDebugConfigV1_1_13,
 }

-impl<T: NymConfig> Default for OldConfigV1_1_13<T> {
-    fn default() -> Self {
-        OldConfigV1_1_13 {
-            client: Client::<T>::default(),
-            logging: Default::default(),
-            debug: Default::default(),
-        }
+#[derive(Debug, Clone, Default, Deserialize, PartialEq, Eq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct OldLoggingV1_1_13 {}
+
+impl From<OldLoggingV1_1_13> for LoggingV1_1_20 {
+    fn from(_value: OldLoggingV1_1_13) -> Self {
+        LoggingV1_1_20 {}
    }
 }

@@ -115,10 +114,10 @@ pub struct OldDebugConfigV1_1_13 {
    pub maximum_reply_key_age: Duration,
 }

-impl From<OldDebugConfigV1_1_13> for DebugConfig {
+impl From<OldDebugConfigV1_1_13> for DebugConfigV1_1_20 {
    fn from(value: OldDebugConfigV1_1_13) -> Self {
-        DebugConfig {
-            traffic: Traffic {
+        DebugConfigV1_1_20 {
+            traffic: TrafficV1_1_20 {
                average_packet_delay: value.average_packet_delay,
                message_sending_average_delay: value.message_sending_average_delay,
                disable_main_poisson_packet_distribution: value
@@ -126,25 +125,25 @@ impl From<OldDebugConfigV1_1_13> for DebugConfig {
                primary_packet_size: PacketSize::RegularPacket,
                secondary_packet_size: value.use_extended_packet_size.map(Into::into),
            },
-            cover_traffic: CoverTraffic {
+            cover_traffic: CoverTrafficV1_1_20 {
                loop_cover_traffic_average_delay: value.loop_cover_traffic_average_delay,
                disable_loop_cover_traffic_stream: value.disable_loop_cover_traffic_stream,
-                ..CoverTraffic::default()
+                ..CoverTrafficV1_1_20::default()
            },
-            gateway_connection: GatewayConnection {
+            gateway_connection: GatewayConnectionV1_1_20 {
                gateway_response_timeout: value.gateway_response_timeout,
            },
-            acknowledgements: Acknowledgements {
+            acknowledgements: AcknowledgementsV1_1_20 {
                average_ack_delay: value.average_ack_delay,
                ack_wait_multiplier: value.ack_wait_multiplier,
                ack_wait_addition: value.ack_wait_addition,
            },
-            topology: Topology {
+            topology: TopologyV1_1_20 {
                topology_refresh_rate: value.topology_refresh_rate,
                topology_resolution_timeout: value.topology_resolution_timeout,
                disable_refreshing: false,
            },
-            reply_surbs: ReplySurbs {
+            reply_surbs: ReplySurbsV1_1_20 {
                minimum_reply_surb_storage_threshold: value.minimum_reply_surb_storage_threshold,
                maximum_reply_surb_storage_threshold: value.maximum_reply_surb_storage_threshold,
                minimum_reply_surb_request_size: value.minimum_reply_surb_request_size,
@@ -191,10 +190,10 @@ impl Default for OldDebugConfigV1_1_13 {
    }
 }

-impl<T, U> From<OldConfigV1_1_13<T>> for Config<U> {
+impl<T, U> From<OldConfigV1_1_13<T>> for ConfigV1_1_20<U> {
    fn from(value: OldConfigV1_1_13<T>) -> Self {
-        Config {
-            client: Client {
+        ConfigV1_1_20 {
+            client: ClientV1_1_20 {
                version: value.client.version,
                id: value.client.id,
                disabled_credentials_mode: value.client.disabled_credentials_mode,
@@ -213,7 +212,7 @@ impl<T, U> From<OldConfigV1_1_13<T>> for Config<U> {

                super_struct: PhantomData,
            },
-            logging: value.logging,
+            logging: value.logging.into(),
            debug: value.debug.into(),
        }
    }
@@ -0,0 +1,339 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::config::old_config_v1_1_20_2::{
+    AcknowledgementsV1_1_20_2, CoverTrafficV1_1_20_2, DebugConfigV1_1_20_2,
+    GatewayConnectionV1_1_20_2, GatewayEndpointConfigV1_1_20_2, ReplySurbsV1_1_20_2,
+    TopologyV1_1_20_2, TrafficV1_1_20_2,
+};
+use nym_sphinx::params::{PacketSize, PacketType};
+use serde::{Deserialize, Serialize};
+use std::marker::PhantomData;
+use std::path::PathBuf;
+use std::time::Duration;
+use url::Url;
+
+// 'DEBUG'
+pub(crate) const DEFAULT_ACK_WAIT_MULTIPLIER: f64 = 1.5;
+
+pub(crate) const DEFAULT_ACK_WAIT_ADDITION: Duration = Duration::from_millis(1_500);
+pub(crate) const DEFAULT_LOOP_COVER_STREAM_AVERAGE_DELAY: Duration = Duration::from_millis(200);
+pub(crate) const DEFAULT_MESSAGE_STREAM_AVERAGE_DELAY: Duration = Duration::from_millis(20);
+pub(crate) const DEFAULT_AVERAGE_PACKET_DELAY: Duration = Duration::from_millis(50);
+pub(crate) const DEFAULT_TOPOLOGY_REFRESH_RATE: Duration = Duration::from_secs(5 * 60); // every 5min
+pub(crate) const DEFAULT_TOPOLOGY_RESOLUTION_TIMEOUT: Duration = Duration::from_millis(5_000);
+// Set this to a high value for now, so that we don't risk sporadic timeouts that might cause
+// bought bandwidth tokens to not have time to be spent; Once we remove the gateway from the
+// bandwidth bridging protocol, we can come back to a smaller timeout value
+pub(crate) const DEFAULT_GATEWAY_RESPONSE_TIMEOUT: Duration = Duration::from_secs(5 * 60);
+
+pub(crate) const DEFAULT_COVER_TRAFFIC_PRIMARY_SIZE_RATIO: f64 = 0.70;
+
+// reply-surbs related:
+
+// define when to request
+// clients/client-core/src/client/replies/reply_storage/surb_storage.rs
+pub(crate) const DEFAULT_MINIMUM_REPLY_SURB_STORAGE_THRESHOLD: usize = 10;
+pub(crate) const DEFAULT_MAXIMUM_REPLY_SURB_STORAGE_THRESHOLD: usize = 200;
+
+// define how much to request at once
+// clients/client-core/src/client/replies/reply_controller.rs
+pub(crate) const DEFAULT_MINIMUM_REPLY_SURB_REQUEST_SIZE: u32 = 10;
+pub(crate) const DEFAULT_MAXIMUM_REPLY_SURB_REQUEST_SIZE: u32 = 100;
+
+pub(crate) const DEFAULT_MAXIMUM_ALLOWED_SURB_REQUEST_SIZE: u32 = 500;
+
+pub(crate) const DEFAULT_MAXIMUM_REPLY_SURB_REREQUEST_WAITING_PERIOD: Duration =
+    Duration::from_secs(10);
+pub(crate) const DEFAULT_MAXIMUM_REPLY_SURB_DROP_WAITING_PERIOD: Duration =
+    Duration::from_secs(5 * 60);
+
+// 12 hours
+pub(crate) const DEFAULT_MAXIMUM_REPLY_SURB_AGE: Duration = Duration::from_secs(12 * 60 * 60);
+
+// 24 hours
+pub(crate) const DEFAULT_MAXIMUM_REPLY_KEY_AGE: Duration = Duration::from_secs(24 * 60 * 60);
+
+#[derive(Debug, Clone, Deserialize, PartialEq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct ConfigV1_1_20<T> {
+    pub client: ClientV1_1_20<T>,
+
+    #[serde(default)]
+    pub logging: LoggingV1_1_20,
+    #[serde(default)]
+    pub debug: DebugConfigV1_1_20,
+}
+
+#[derive(Clone, Debug, Default, Deserialize, PartialEq, Eq, Serialize)]
+pub struct GatewayEndpointConfigV1_1_20 {
+    pub gateway_id: String,
+    pub gateway_owner: String,
+    pub gateway_listener: String,
+}
+
+impl From<GatewayEndpointConfigV1_1_20> for GatewayEndpointConfigV1_1_20_2 {
+    fn from(value: GatewayEndpointConfigV1_1_20) -> Self {
+        GatewayEndpointConfigV1_1_20_2 {
+            gateway_id: value.gateway_id,
+            gateway_owner: value.gateway_owner,
+            gateway_listener: value.gateway_listener,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Deserialize, PartialEq, Eq, Serialize)]
+pub struct ClientV1_1_20<T> {
+    pub version: String,
+    pub id: String,
+    #[serde(default)]
+    pub disabled_credentials_mode: bool,
+    #[serde(alias = "validator_urls")]
+    pub nyxd_urls: Vec<Url>,
+    #[serde(alias = "validator_api_urls")]
+    pub nym_api_urls: Vec<Url>,
+    pub private_identity_key_file: PathBuf,
+    pub public_identity_key_file: PathBuf,
+    pub private_encryption_key_file: PathBuf,
+    pub public_encryption_key_file: PathBuf,
+    pub gateway_shared_key_file: PathBuf,
+    pub ack_key_file: PathBuf,
+    pub gateway_endpoint: GatewayEndpointConfigV1_1_20,
+    pub database_path: PathBuf,
+    #[serde(default)]
+    pub reply_surb_database_path: PathBuf,
+    pub nym_root_directory: PathBuf,
+
+    #[serde(skip)]
+    pub super_struct: PhantomData<T>,
+}
+
+#[derive(Debug, Clone, Default, Deserialize, PartialEq, Eq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct LoggingV1_1_20 {}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default)]
+pub struct TrafficV1_1_20 {
+    #[serde(with = "humantime_serde")]
+    pub average_packet_delay: Duration,
+    #[serde(with = "humantime_serde")]
+    pub message_sending_average_delay: Duration,
+    pub disable_main_poisson_packet_distribution: bool,
+    pub primary_packet_size: PacketSize,
+    pub secondary_packet_size: Option<PacketSize>,
+}
+
+impl From<TrafficV1_1_20> for TrafficV1_1_20_2 {
+    fn from(value: TrafficV1_1_20) -> Self {
+        TrafficV1_1_20_2 {
+            average_packet_delay: value.average_packet_delay,
+            message_sending_average_delay: value.message_sending_average_delay,
+            disable_main_poisson_packet_distribution: value
+                .disable_main_poisson_packet_distribution,
+            primary_packet_size: value.primary_packet_size,
+            secondary_packet_size: value.secondary_packet_size,
+            packet_type: PacketType::Mix,
+        }
+    }
+}
+
+impl Default for TrafficV1_1_20 {
+    fn default() -> Self {
+        TrafficV1_1_20 {
+            average_packet_delay: DEFAULT_AVERAGE_PACKET_DELAY,
+            message_sending_average_delay: DEFAULT_MESSAGE_STREAM_AVERAGE_DELAY,
+            disable_main_poisson_packet_distribution: false,
+            primary_packet_size: PacketSize::RegularPacket,
+            secondary_packet_size: None,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct CoverTrafficV1_1_20 {
+    #[serde(with = "humantime_serde")]
+    pub loop_cover_traffic_average_delay: Duration,
+    pub cover_traffic_primary_size_ratio: f64,
+    pub disable_loop_cover_traffic_stream: bool,
+}
+
+impl From<CoverTrafficV1_1_20> for CoverTrafficV1_1_20_2 {
+    fn from(value: CoverTrafficV1_1_20) -> Self {
+        CoverTrafficV1_1_20_2 {
+            loop_cover_traffic_average_delay: value.loop_cover_traffic_average_delay,
+            cover_traffic_primary_size_ratio: value.cover_traffic_primary_size_ratio,
+            disable_loop_cover_traffic_stream: value.disable_loop_cover_traffic_stream,
+        }
+    }
+}
+
+impl Default for CoverTrafficV1_1_20 {
+    fn default() -> Self {
+        CoverTrafficV1_1_20 {
+            loop_cover_traffic_average_delay: DEFAULT_LOOP_COVER_STREAM_AVERAGE_DELAY,
+            cover_traffic_primary_size_ratio: DEFAULT_COVER_TRAFFIC_PRIMARY_SIZE_RATIO,
+            disable_loop_cover_traffic_stream: false,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct GatewayConnectionV1_1_20 {
+    #[serde(with = "humantime_serde")]
+    pub gateway_response_timeout: Duration,
+}
+
+impl From<GatewayConnectionV1_1_20> for GatewayConnectionV1_1_20_2 {
+    fn from(value: GatewayConnectionV1_1_20) -> Self {
+        GatewayConnectionV1_1_20_2 {
+            gateway_response_timeout: value.gateway_response_timeout,
+        }
+    }
+}
+
+impl Default for GatewayConnectionV1_1_20 {
+    fn default() -> Self {
+        GatewayConnectionV1_1_20 {
+            gateway_response_timeout: DEFAULT_GATEWAY_RESPONSE_TIMEOUT,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct AcknowledgementsV1_1_20 {
+    #[serde(with = "humantime_serde")]
+    pub average_ack_delay: Duration,
+    pub ack_wait_multiplier: f64,
+    #[serde(with = "humantime_serde")]
+    pub ack_wait_addition: Duration,
+}
+
+impl From<AcknowledgementsV1_1_20> for AcknowledgementsV1_1_20_2 {
+    fn from(value: AcknowledgementsV1_1_20) -> Self {
+        AcknowledgementsV1_1_20_2 {
+            average_ack_delay: value.average_ack_delay,
+            ack_wait_multiplier: value.ack_wait_multiplier,
+            ack_wait_addition: value.ack_wait_addition,
+        }
+    }
+}
+
+impl Default for AcknowledgementsV1_1_20 {
+    fn default() -> Self {
+        AcknowledgementsV1_1_20 {
+            average_ack_delay: DEFAULT_AVERAGE_PACKET_DELAY,
+            ack_wait_multiplier: DEFAULT_ACK_WAIT_MULTIPLIER,
+            ack_wait_addition: DEFAULT_ACK_WAIT_ADDITION,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct TopologyV1_1_20 {
+    #[serde(with = "humantime_serde")]
+    pub topology_refresh_rate: Duration,
+    #[serde(with = "humantime_serde")]
+    pub topology_resolution_timeout: Duration,
+    pub disable_refreshing: bool,
+}
+
+impl From<TopologyV1_1_20> for TopologyV1_1_20_2 {
+    fn from(value: TopologyV1_1_20) -> Self {
+        TopologyV1_1_20_2 {
+            topology_refresh_rate: value.topology_refresh_rate,
+            topology_resolution_timeout: value.topology_resolution_timeout,
+            disable_refreshing: value.disable_refreshing,
+        }
+    }
+}
+
+impl Default for TopologyV1_1_20 {
+    fn default() -> Self {
+        TopologyV1_1_20 {
+            topology_refresh_rate: DEFAULT_TOPOLOGY_REFRESH_RATE,
+            topology_resolution_timeout: DEFAULT_TOPOLOGY_RESOLUTION_TIMEOUT,
+            disable_refreshing: false,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct ReplySurbsV1_1_20 {
+    pub minimum_reply_surb_storage_threshold: usize,
+    pub maximum_reply_surb_storage_threshold: usize,
+    pub minimum_reply_surb_request_size: u32,
+    pub maximum_reply_surb_request_size: u32,
+    pub maximum_allowed_reply_surb_request_size: u32,
+    #[serde(with = "humantime_serde")]
+    pub maximum_reply_surb_rerequest_waiting_period: Duration,
+    #[serde(with = "humantime_serde")]
+    pub maximum_reply_surb_drop_waiting_period: Duration,
+    #[serde(with = "humantime_serde")]
+    pub maximum_reply_surb_age: Duration,
+    #[serde(with = "humantime_serde")]
+    pub maximum_reply_key_age: Duration,
+}
+
+impl From<ReplySurbsV1_1_20> for ReplySurbsV1_1_20_2 {
+    fn from(value: ReplySurbsV1_1_20) -> Self {
+        ReplySurbsV1_1_20_2 {
+            minimum_reply_surb_storage_threshold: value.minimum_reply_surb_storage_threshold,
+            maximum_reply_surb_storage_threshold: value.maximum_reply_surb_storage_threshold,
+            minimum_reply_surb_request_size: value.minimum_reply_surb_request_size,
+            maximum_reply_surb_request_size: value.maximum_reply_surb_request_size,
+            maximum_allowed_reply_surb_request_size: value.maximum_allowed_reply_surb_request_size,
+            maximum_reply_surb_rerequest_waiting_period: value
+                .maximum_reply_surb_rerequest_waiting_period,
+            maximum_reply_surb_drop_waiting_period: value.maximum_reply_surb_drop_waiting_period,
+            maximum_reply_surb_age: value.maximum_reply_surb_age,
+            maximum_reply_key_age: value.maximum_reply_key_age,
+        }
+    }
+}
+
+impl Default for ReplySurbsV1_1_20 {
+    fn default() -> Self {
+        ReplySurbsV1_1_20 {
+            minimum_reply_surb_storage_threshold: DEFAULT_MINIMUM_REPLY_SURB_STORAGE_THRESHOLD,
+            maximum_reply_surb_storage_threshold: DEFAULT_MAXIMUM_REPLY_SURB_STORAGE_THRESHOLD,
+            minimum_reply_surb_request_size: DEFAULT_MINIMUM_REPLY_SURB_REQUEST_SIZE,
+            maximum_reply_surb_request_size: DEFAULT_MAXIMUM_REPLY_SURB_REQUEST_SIZE,
+            maximum_allowed_reply_surb_request_size: DEFAULT_MAXIMUM_ALLOWED_SURB_REQUEST_SIZE,
+            maximum_reply_surb_rerequest_waiting_period:
+                DEFAULT_MAXIMUM_REPLY_SURB_REREQUEST_WAITING_PERIOD,
+            maximum_reply_surb_drop_waiting_period: DEFAULT_MAXIMUM_REPLY_SURB_DROP_WAITING_PERIOD,
+            maximum_reply_surb_age: DEFAULT_MAXIMUM_REPLY_SURB_AGE,
+            maximum_reply_key_age: DEFAULT_MAXIMUM_REPLY_KEY_AGE,
+        }
+    }
+}
+
+#[derive(Debug, Default, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct DebugConfigV1_1_20 {
+    pub traffic: TrafficV1_1_20,
+    pub cover_traffic: CoverTrafficV1_1_20,
+    pub gateway_connection: GatewayConnectionV1_1_20,
+    pub acknowledgements: AcknowledgementsV1_1_20,
+    pub topology: TopologyV1_1_20,
+    pub reply_surbs: ReplySurbsV1_1_20,
+}
+
+impl From<DebugConfigV1_1_20> for DebugConfigV1_1_20_2 {
+    fn from(value: DebugConfigV1_1_20) -> Self {
+        DebugConfigV1_1_20_2 {
+            traffic: value.traffic.into(),
+            cover_traffic: value.cover_traffic.into(),
+            gateway_connection: value.gateway_connection.into(),
+            acknowledgements: value.acknowledgements.into(),
+            topology: value.topology.into(),
+            reply_surbs: value.reply_surbs.into(),
+        }
+    }
+}
@@ -0,0 +1,348 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::config::{
+    Acknowledgements, Client, Config, CoverTraffic, DebugConfig, GatewayConnection,
+    GatewayEndpointConfig, ReplySurbs, Topology, Traffic,
+};
+use nym_sphinx::params::{PacketSize, PacketType};
+use serde::{Deserialize, Serialize};
+use std::time::Duration;
+use url::Url;
+
+// 'DEBUG'
+const DEFAULT_ACK_WAIT_MULTIPLIER: f64 = 1.5;
+
+const DEFAULT_ACK_WAIT_ADDITION: Duration = Duration::from_millis(1_500);
+const DEFAULT_LOOP_COVER_STREAM_AVERAGE_DELAY: Duration = Duration::from_millis(200);
+const DEFAULT_MESSAGE_STREAM_AVERAGE_DELAY: Duration = Duration::from_millis(20);
+const DEFAULT_AVERAGE_PACKET_DELAY: Duration = Duration::from_millis(50);
+const DEFAULT_TOPOLOGY_REFRESH_RATE: Duration = Duration::from_secs(5 * 60); // every 5min
+const DEFAULT_TOPOLOGY_RESOLUTION_TIMEOUT: Duration = Duration::from_millis(5_000);
+// Set this to a high value for now, so that we don't risk sporadic timeouts that might cause
+// bought bandwidth tokens to not have time to be spent; Once we remove the gateway from the
+// bandwidth bridging protocol, we can come back to a smaller timeout value
+const DEFAULT_GATEWAY_RESPONSE_TIMEOUT: Duration = Duration::from_secs(5 * 60);
+
+const DEFAULT_COVER_TRAFFIC_PRIMARY_SIZE_RATIO: f64 = 0.70;
+
+// reply-surbs related:
+
+// define when to request
+// clients/client-core/src/client/replies/reply_storage/surb_storage.rs
+const DEFAULT_MINIMUM_REPLY_SURB_STORAGE_THRESHOLD: usize = 10;
+const DEFAULT_MAXIMUM_REPLY_SURB_STORAGE_THRESHOLD: usize = 200;
+
+// define how much to request at once
+// clients/client-core/src/client/replies/reply_controller.rs
+const DEFAULT_MINIMUM_REPLY_SURB_REQUEST_SIZE: u32 = 10;
+const DEFAULT_MAXIMUM_REPLY_SURB_REQUEST_SIZE: u32 = 100;
+
+const DEFAULT_MAXIMUM_ALLOWED_SURB_REQUEST_SIZE: u32 = 500;
+
+const DEFAULT_MAXIMUM_REPLY_SURB_REREQUEST_WAITING_PERIOD: Duration = Duration::from_secs(10);
+const DEFAULT_MAXIMUM_REPLY_SURB_DROP_WAITING_PERIOD: Duration = Duration::from_secs(5 * 60);
+
+// 12 hours
+const DEFAULT_MAXIMUM_REPLY_SURB_AGE: Duration = Duration::from_secs(12 * 60 * 60);
+
+// 24 hours
+const DEFAULT_MAXIMUM_REPLY_KEY_AGE: Duration = Duration::from_secs(24 * 60 * 60);
+
+#[derive(Debug, Clone, Deserialize, PartialEq, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct ConfigV1_1_20_2 {
+    pub client: ClientV1_1_20_2,
+
+    #[serde(default)]
+    pub debug: DebugConfigV1_1_20_2,
+}
+
+impl From<ConfigV1_1_20_2> for Config {
+    fn from(value: ConfigV1_1_20_2) -> Self {
+        Config {
+            client: value.client.into(),
+            debug: value.debug.into(),
+        }
+    }
+}
+
+#[derive(Clone, Debug, Default, Deserialize, PartialEq, Eq, Serialize)]
+pub struct GatewayEndpointConfigV1_1_20_2 {
+    /// gateway_id specifies ID of the gateway to which the client should send messages.
+    /// If initially omitted, a random gateway will be chosen from the available topology.
+    pub gateway_id: String,
+
+    /// Address of the gateway owner to which the client should send messages.
+    pub gateway_owner: String,
+
+    /// Address of the gateway listener to which all client requests should be sent.
+    pub gateway_listener: String,
+}
+
+impl From<GatewayEndpointConfigV1_1_20_2> for GatewayEndpointConfig {
+    fn from(value: GatewayEndpointConfigV1_1_20_2) -> Self {
+        GatewayEndpointConfig {
+            gateway_id: value.gateway_id,
+            gateway_owner: value.gateway_owner,
+            gateway_listener: value.gateway_listener,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Deserialize, PartialEq, Eq, Serialize)]
+pub struct ClientV1_1_20_2 {
+    pub version: String,
+
+    pub id: String,
+
+    #[serde(default)]
+    pub disabled_credentials_mode: bool,
+
+    #[serde(alias = "validator_urls")]
+    pub nyxd_urls: Vec<Url>,
+
+    #[serde(alias = "validator_api_urls")]
+    pub nym_api_urls: Vec<Url>,
+    pub gateway_endpoint: GatewayEndpointConfigV1_1_20_2,
+}
+
+impl From<ClientV1_1_20_2> for Client {
+    fn from(value: ClientV1_1_20_2) -> Self {
+        Client {
+            version: value.version,
+            id: value.id,
+            disabled_credentials_mode: value.disabled_credentials_mode,
+            nyxd_urls: value.nyxd_urls,
+            nym_api_urls: value.nym_api_urls,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default)]
+pub struct TrafficV1_1_20_2 {
+    #[serde(with = "humantime_serde")]
+    pub average_packet_delay: Duration,
+    #[serde(with = "humantime_serde")]
+    pub message_sending_average_delay: Duration,
+    pub disable_main_poisson_packet_distribution: bool,
+    pub primary_packet_size: PacketSize,
+    pub secondary_packet_size: Option<PacketSize>,
+    pub packet_type: PacketType,
+}
+
+impl From<TrafficV1_1_20_2> for Traffic {
+    fn from(value: TrafficV1_1_20_2) -> Self {
+        Traffic {
+            average_packet_delay: value.average_packet_delay,
+            message_sending_average_delay: value.message_sending_average_delay,
+            disable_main_poisson_packet_distribution: value
+                .disable_main_poisson_packet_distribution,
+            primary_packet_size: value.primary_packet_size,
+            secondary_packet_size: value.secondary_packet_size,
+            packet_type: PacketType::Mix,
+        }
+    }
+}
+
+impl Default for TrafficV1_1_20_2 {
+    fn default() -> Self {
+        TrafficV1_1_20_2 {
+            average_packet_delay: DEFAULT_AVERAGE_PACKET_DELAY,
+            message_sending_average_delay: DEFAULT_MESSAGE_STREAM_AVERAGE_DELAY,
+            disable_main_poisson_packet_distribution: false,
+            primary_packet_size: PacketSize::RegularPacket,
+            secondary_packet_size: None,
+            packet_type: PacketType::Mix,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct CoverTrafficV1_1_20_2 {
+    #[serde(with = "humantime_serde")]
+    pub loop_cover_traffic_average_delay: Duration,
+    pub cover_traffic_primary_size_ratio: f64,
+    pub disable_loop_cover_traffic_stream: bool,
+}
+
+impl From<CoverTrafficV1_1_20_2> for CoverTraffic {
+    fn from(value: CoverTrafficV1_1_20_2) -> Self {
+        CoverTraffic {
+            loop_cover_traffic_average_delay: value.loop_cover_traffic_average_delay,
+            cover_traffic_primary_size_ratio: value.cover_traffic_primary_size_ratio,
+            disable_loop_cover_traffic_stream: value.disable_loop_cover_traffic_stream,
+        }
+    }
+}
+
+impl Default for CoverTrafficV1_1_20_2 {
+    fn default() -> Self {
+        CoverTrafficV1_1_20_2 {
+            loop_cover_traffic_average_delay: DEFAULT_LOOP_COVER_STREAM_AVERAGE_DELAY,
+            cover_traffic_primary_size_ratio: DEFAULT_COVER_TRAFFIC_PRIMARY_SIZE_RATIO,
+            disable_loop_cover_traffic_stream: false,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct GatewayConnectionV1_1_20_2 {
+    #[serde(with = "humantime_serde")]
+    pub gateway_response_timeout: Duration,
+}
+
+impl From<GatewayConnectionV1_1_20_2> for GatewayConnection {
+    fn from(value: GatewayConnectionV1_1_20_2) -> Self {
+        GatewayConnection {
+            gateway_response_timeout: value.gateway_response_timeout,
+        }
+    }
+}
+
+impl Default for GatewayConnectionV1_1_20_2 {
+    fn default() -> Self {
+        GatewayConnectionV1_1_20_2 {
+            gateway_response_timeout: DEFAULT_GATEWAY_RESPONSE_TIMEOUT,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct AcknowledgementsV1_1_20_2 {
+    #[serde(with = "humantime_serde")]
+    pub average_ack_delay: Duration,
+    pub ack_wait_multiplier: f64,
+    #[serde(with = "humantime_serde")]
+    pub ack_wait_addition: Duration,
+}
+
+impl From<AcknowledgementsV1_1_20_2> for Acknowledgements {
+    fn from(value: AcknowledgementsV1_1_20_2) -> Self {
+        Acknowledgements {
+            average_ack_delay: value.average_ack_delay,
+            ack_wait_multiplier: value.ack_wait_multiplier,
+            ack_wait_addition: value.ack_wait_addition,
+        }
+    }
+}
+
+impl Default for AcknowledgementsV1_1_20_2 {
+    fn default() -> Self {
+        AcknowledgementsV1_1_20_2 {
+            average_ack_delay: DEFAULT_AVERAGE_PACKET_DELAY,
+            ack_wait_multiplier: DEFAULT_ACK_WAIT_MULTIPLIER,
+            ack_wait_addition: DEFAULT_ACK_WAIT_ADDITION,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct TopologyV1_1_20_2 {
+    #[serde(with = "humantime_serde")]
+    pub topology_refresh_rate: Duration,
+    #[serde(with = "humantime_serde")]
+    pub topology_resolution_timeout: Duration,
+    pub disable_refreshing: bool,
+}
+
+impl Default for TopologyV1_1_20_2 {
+    fn default() -> Self {
+        TopologyV1_1_20_2 {
+            topology_refresh_rate: DEFAULT_TOPOLOGY_REFRESH_RATE,
+            topology_resolution_timeout: DEFAULT_TOPOLOGY_RESOLUTION_TIMEOUT,
+            disable_refreshing: false,
+        }
+    }
+}
+
+impl From<TopologyV1_1_20_2> for Topology {
+    fn from(value: TopologyV1_1_20_2) -> Self {
+        Topology {
+            topology_refresh_rate: value.topology_refresh_rate,
+            topology_resolution_timeout: value.topology_resolution_timeout,
+            disable_refreshing: value.disable_refreshing,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct ReplySurbsV1_1_20_2 {
+    pub minimum_reply_surb_storage_threshold: usize,
+    pub maximum_reply_surb_storage_threshold: usize,
+    pub minimum_reply_surb_request_size: u32,
+    pub maximum_reply_surb_request_size: u32,
+    pub maximum_allowed_reply_surb_request_size: u32,
+    #[serde(with = "humantime_serde")]
+    pub maximum_reply_surb_rerequest_waiting_period: Duration,
+    #[serde(with = "humantime_serde")]
+    pub maximum_reply_surb_drop_waiting_period: Duration,
+    #[serde(with = "humantime_serde")]
+    pub maximum_reply_surb_age: Duration,
+    #[serde(with = "humantime_serde")]
+    pub maximum_reply_key_age: Duration,
+}
+
+impl Default for ReplySurbsV1_1_20_2 {
+    fn default() -> Self {
+        ReplySurbsV1_1_20_2 {
+            minimum_reply_surb_storage_threshold: DEFAULT_MINIMUM_REPLY_SURB_STORAGE_THRESHOLD,
+            maximum_reply_surb_storage_threshold: DEFAULT_MAXIMUM_REPLY_SURB_STORAGE_THRESHOLD,
+            minimum_reply_surb_request_size: DEFAULT_MINIMUM_REPLY_SURB_REQUEST_SIZE,
+            maximum_reply_surb_request_size: DEFAULT_MAXIMUM_REPLY_SURB_REQUEST_SIZE,
+            maximum_allowed_reply_surb_request_size: DEFAULT_MAXIMUM_ALLOWED_SURB_REQUEST_SIZE,
+            maximum_reply_surb_rerequest_waiting_period:
+                DEFAULT_MAXIMUM_REPLY_SURB_REREQUEST_WAITING_PERIOD,
+            maximum_reply_surb_drop_waiting_period: DEFAULT_MAXIMUM_REPLY_SURB_DROP_WAITING_PERIOD,
+            maximum_reply_surb_age: DEFAULT_MAXIMUM_REPLY_SURB_AGE,
+            maximum_reply_key_age: DEFAULT_MAXIMUM_REPLY_KEY_AGE,
+        }
+    }
+}
+
+impl From<ReplySurbsV1_1_20_2> for ReplySurbs {
+    fn from(value: ReplySurbsV1_1_20_2) -> Self {
+        ReplySurbs {
+            minimum_reply_surb_storage_threshold: value.minimum_reply_surb_storage_threshold,
+            maximum_reply_surb_storage_threshold: value.maximum_reply_surb_storage_threshold,
+            minimum_reply_surb_request_size: value.minimum_reply_surb_request_size,
+            maximum_reply_surb_request_size: value.maximum_reply_surb_request_size,
+            maximum_allowed_reply_surb_request_size: value.maximum_allowed_reply_surb_request_size,
+            maximum_reply_surb_rerequest_waiting_period: value
+                .maximum_reply_surb_rerequest_waiting_period,
+            maximum_reply_surb_drop_waiting_period: value.maximum_reply_surb_drop_waiting_period,
+            maximum_reply_surb_age: value.maximum_reply_surb_age,
+            maximum_reply_key_age: value.maximum_reply_key_age,
+        }
+    }
+}
+
+#[derive(Debug, Default, Clone, Copy, Deserialize, PartialEq, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct DebugConfigV1_1_20_2 {
+    pub traffic: TrafficV1_1_20_2,
+    pub cover_traffic: CoverTrafficV1_1_20_2,
+    pub gateway_connection: GatewayConnectionV1_1_20_2,
+    pub acknowledgements: AcknowledgementsV1_1_20_2,
+    pub topology: TopologyV1_1_20_2,
+    pub reply_surbs: ReplySurbsV1_1_20_2,
+}
+
+impl From<DebugConfigV1_1_20_2> for DebugConfig {
+    fn from(value: DebugConfigV1_1_20_2) -> Self {
+        DebugConfig {
+            traffic: value.traffic.into(),
+            cover_traffic: value.cover_traffic.into(),
+            gateway_connection: value.gateway_connection.into(),
+            acknowledgements: value.acknowledgements.into(),
+            topology: value.topology.into(),
+            reply_surbs: value.reply_surbs.into(),
+        }
+    }
+}
@@ -1,103 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-use crate::config::Config;
-use nym_config::NymConfig;
-use std::path::{Path, PathBuf};
-
-#[derive(Debug)]
-pub struct ClientKeyPathfinder {
-    pub identity_private_key: PathBuf,
-    pub identity_public_key: PathBuf,
-    pub encryption_private_key: PathBuf,
-    pub encryption_public_key: PathBuf,
-    pub gateway_shared_key: PathBuf,
-    pub ack_key: PathBuf,
-}
-
-impl ClientKeyPathfinder {
-    pub fn new(id: String) -> Self {
-        let os_config_dir = dirs::config_dir().expect("no config directory known for this OS"); // grabs the OS default config dir
-        let config_dir = os_config_dir.join("nym").join("clients").join(id);
-        ClientKeyPathfinder {
-            identity_private_key: config_dir.join("private_identity.pem"),
-            identity_public_key: config_dir.join("public_identity.pem"),
-            encryption_private_key: config_dir.join("private_encryption.pem"),
-            encryption_public_key: config_dir.join("public_encryption.pem"),
-            gateway_shared_key: config_dir.join("gateway_shared.pem"),
-            ack_key: config_dir.join("ack_key.pem"),
-        }
-    }
-
-    pub fn new_from_config<T: NymConfig>(config: &Config<T>) -> Self {
-        ClientKeyPathfinder {
-            identity_private_key: config.get_private_identity_key_file(),
-            identity_public_key: config.get_public_identity_key_file(),
-            encryption_private_key: config.get_private_encryption_key_file(),
-            encryption_public_key: config.get_public_encryption_key_file(),
-            gateway_shared_key: config.get_gateway_shared_key_file(),
-            ack_key: config.get_ack_key_file(),
-        }
-    }
-
-    pub fn identity_key_pair_path(&self) -> nym_pemstore::KeyPairPath {
-        nym_pemstore::KeyPairPath::new(self.private_identity_key(), self.public_identity_key())
-    }
-
-    pub fn encryption_key_pair_path(&self) -> nym_pemstore::KeyPairPath {
-        nym_pemstore::KeyPairPath::new(self.private_encryption_key(), self.public_encryption_key())
-    }
-
-    pub fn any_file_exists(&self) -> bool {
-        matches!(self.identity_public_key.try_exists(), Ok(true))
-            || matches!(self.identity_private_key.try_exists(), Ok(true))
-            || matches!(self.encryption_public_key.try_exists(), Ok(true))
-            || matches!(self.encryption_private_key.try_exists(), Ok(true))
-            || matches!(self.gateway_shared_key.try_exists(), Ok(true))
-            || matches!(self.ack_key.try_exists(), Ok(true))
-    }
-
-    pub fn any_file_exists_and_return(&self) -> Option<PathBuf> {
-        file_exists(&self.identity_public_key)
-            .or_else(|| file_exists(&self.identity_private_key))
-            .or_else(|| file_exists(&self.encryption_public_key))
-            .or_else(|| file_exists(&self.encryption_private_key))
-            .or_else(|| file_exists(&self.gateway_shared_key))
-            .or_else(|| file_exists(&self.ack_key))
-    }
-
-    pub fn gateway_key_file_exists(&self) -> bool {
-        matches!(self.gateway_shared_key.try_exists(), Ok(true))
-    }
-
-    pub fn private_identity_key(&self) -> &Path {
-        &self.identity_private_key
-    }
-
-    pub fn public_identity_key(&self) -> &Path {
-        &self.identity_public_key
-    }
-
-    pub fn private_encryption_key(&self) -> &Path {
-        &self.encryption_private_key
-    }
-
-    pub fn public_encryption_key(&self) -> &Path {
-        &self.encryption_public_key
-    }
-
-    pub fn gateway_shared_key(&self) -> &Path {
-        &self.gateway_shared_key
-    }
-
-    pub fn ack_key(&self) -> &Path {
-        &self.ack_key
-    }
-}
-
-fn file_exists(path: &Path) -> Option<PathBuf> {
-    if matches!(path.try_exists(), Ok(true)) {
-        return Some(path.to_path_buf());
-    }
-    None
-}
@@ -1,4 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-pub mod key_pathfinder;
@@ -50,6 +50,11 @@ pub enum ClientCoreError {
        source: Box<dyn Error + Send + Sync>,
    },

+    #[error("experienced a failure with our gateway details storage: {source}")]
+    GatewayDetailsStoreError {
+        source: Box<dyn Error + Send + Sync>,
+    },
+
    #[error("The gateway id is invalid - {0}")]
    UnableToCreatePublicKeyFromGatewayId(Ed25519RecoveryError),

@@ -92,6 +97,25 @@ pub enum ClientCoreError {

    #[error("Unexpected exit")]
    UnexpectedExit,
+
+    #[error(
+        "This operation would have resulted in clients keys being overwritten without permission"
+    )]
+    ForbiddenKeyOverwrite,
+
+    #[error("gateway details are unavailable")]
+    UnavailableGatewayDetails {
+        source: Box<dyn Error + Send + Sync>,
+    },
+
+    #[error("gateway shared key is unavailable whilst we have full node information")]
+    UnavailableSharedKey,
+
+    #[error("attempted to obtain fresh gateway details whilst already knowing about one")]
+    UnexpectedGatewayDetails,
+
+    #[error("the provided gateway details (for gateway {gateway_id}) do not correspond to the shared keys")]
+    MismatchedGatewayDetails { gateway_id: String },
 }

 /// Set of messages that the client can send to listeners via the task manager
@@ -1,15 +1,15 @@
 // Copyright 2022-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+use crate::config::GatewayEndpointConfig;
 use crate::error::ClientCoreError;
 use futures::{SinkExt, StreamExt};
 use log::{debug, info, trace, warn};
-use nym_credential_storage::storage::Storage;
 use nym_crypto::asymmetric::identity;
 use nym_gateway_client::GatewayClient;
 use nym_gateway_requests::registration::handshake::SharedKeys;
 use nym_topology::{filter::VersionFilterable, gateway};
-use rand::{seq::SliceRandom, thread_rng, Rng};
+use rand::{seq::SliceRandom, Rng};
 use std::{sync::Arc, time::Duration};
 use tap::TapFallible;
 use tungstenite::Message;
@@ -27,12 +27,6 @@ use tokio_tungstenite::connect_async;
 use tokio_tungstenite::{MaybeTlsStream, WebSocketStream};
 #[cfg(not(target_arch = "wasm32"))]
 type WsConn = WebSocketStream<MaybeTlsStream<TcpStream>>;
-#[cfg(not(target_arch = "wasm32"))]
-use crate::client::key_manager::persistence::OnDiskKeys;
-#[cfg(not(target_arch = "wasm32"))]
-use crate::config::{persistence::key_pathfinder::ClientKeyPathfinder, Config};
-#[cfg(not(target_arch = "wasm32"))]
-use nym_config::NymConfig;

 #[cfg(target_arch = "wasm32")]
 use nym_bandwidth_controller::wasm_mockups::DirectSigningNyxdClient;
@@ -50,27 +44,27 @@ const MEASUREMENTS: usize = 3;
 const CONN_TIMEOUT: Duration = Duration::from_millis(1500);
 const PING_TIMEOUT: Duration = Duration::from_millis(1000);

-struct GatewayWithLatency {
-    gateway: gateway::Node,
+struct GatewayWithLatency<'a> {
+    gateway: &'a gateway::Node,
    latency: Duration,
 }

-impl GatewayWithLatency {
-    fn new(gateway: gateway::Node, latency: Duration) -> Self {
+impl<'a> GatewayWithLatency<'a> {
+    fn new(gateway: &'a gateway::Node, latency: Duration) -> Self {
        GatewayWithLatency { gateway, latency }
    }
 }

-async fn current_gateways<R: Rng>(
+pub async fn current_gateways<R: Rng>(
    rng: &mut R,
-    nym_apis: Vec<Url>,
+    nym_apis: &[Url],
 ) -> Result<Vec<gateway::Node>, ClientCoreError> {
    let nym_api = nym_apis
        .choose(rng)
        .ok_or(ClientCoreError::ListOfNymApisIsEmpty)?;
    let client = nym_validator_client::client::NymApiClient::new(nym_api.clone());

-    log::trace!("Fetching list of gateways from: {}", nym_api);
+    log::trace!("Fetching list of gateways from: {nym_api}");

    let gateways = client.get_cached_gateways().await?;
    let valid_gateways = gateways
@@ -97,7 +91,7 @@ async fn connect(endpoint: &str) -> Result<WsConn, ClientCoreError> {
    JSWebsocket::new(endpoint).map_err(|_| ClientCoreError::GatewayJsConnectionFailure)
 }

-async fn measure_latency(gateway: gateway::Node) -> Result<GatewayWithLatency, ClientCoreError> {
+async fn measure_latency(gateway: &gateway::Node) -> Result<GatewayWithLatency, ClientCoreError> {
    let addr = gateway.clients_address();
    trace!(
        "establishing connection to {} ({addr})...",
@@ -160,9 +154,9 @@ async fn measure_latency(gateway: gateway::Node) -> Result<GatewayWithLatency, C
    Ok(GatewayWithLatency::new(gateway, avg))
 }

-async fn choose_gateway_by_latency<R: Rng>(
+pub(super) async fn choose_gateway_by_latency<R: Rng>(
    rng: &mut R,
-    gateways: Vec<gateway::Node>,
+    gateways: &[gateway::Node],
 ) -> Result<gateway::Node, ClientCoreError> {
    info!("choosing gateway by latency...");

@@ -193,9 +187,9 @@ async fn choose_gateway_by_latency<R: Rng>(
    Ok(chosen.gateway.clone())
 }

-fn uniformly_random_gateway<R: Rng>(
+pub(super) fn uniformly_random_gateway<R: Rng>(
    rng: &mut R,
-    gateways: Vec<gateway::Node>,
+    gateways: &[gateway::Node],
 ) -> Result<gateway::Node, ClientCoreError> {
    gateways
        .choose(rng)
@@ -203,39 +197,14 @@ fn uniformly_random_gateway<R: Rng>(
        .cloned()
 }

-pub(super) async fn query_gateway_details(
-    validator_servers: Vec<Url>,
-    chosen_gateway_id: Option<identity::PublicKey>,
-    by_latency: bool,
-) -> Result<gateway::Node, ClientCoreError> {
-    let mut rng = thread_rng();
-    let gateways = current_gateways(&mut rng, validator_servers).await?;
-
-    // if we set an explicit gateway, use that one and nothing else
-    if let Some(explicitly_chosen) = chosen_gateway_id {
-        gateways
-            .into_iter()
-            .find(|gateway| gateway.identity_key == explicitly_chosen)
-            .ok_or_else(|| ClientCoreError::NoGatewayWithId(explicitly_chosen.to_string()))
-    } else if by_latency {
-        choose_gateway_by_latency(&mut rng, gateways).await
-    } else {
-        uniformly_random_gateway(&mut rng, gateways)
-    }
-}
-
-pub(super) async fn register_with_gateway<St>(
-    gateway: &gateway::Node,
+pub(super) async fn register_with_gateway(
+    gateway: &GatewayEndpointConfig,
    our_identity: Arc<identity::KeyPair>,
-) -> Result<Arc<SharedKeys>, ClientCoreError>
-where
-    St: Storage,
-    <St as Storage>::StorageError: Send + Sync + 'static,
-{
+) -> Result<Arc<SharedKeys>, ClientCoreError> {
    let timeout = Duration::from_millis(1500);
-    let mut gateway_client: GatewayClient<DirectSigningNyxdClient, St> = GatewayClient::new_init(
-        gateway.clients_address(),
-        gateway.identity_key,
+    let mut gateway_client: GatewayClient<DirectSigningNyxdClient, _> = GatewayClient::new_init(
+        gateway.gateway_listener.clone(),
+        gateway.try_get_gateway_identity_key()?,
        our_identity.clone(),
        timeout,
    );
@@ -249,13 +218,3 @@ where
        .tap_err(|_| log::warn!("Failed to register with the gateway!"))?;
    Ok(shared_keys)
 }
-
-// TODO: make it generic
-#[cfg(not(target_arch = "wasm32"))]
-pub(super) fn on_disk_key_store<T>(config: &Config<T>) -> OnDiskKeys
-where
-    T: NymConfig,
-{
-    let pathfinder = ClientKeyPathfinder::new_from_config(config);
-    OnDiskKeys::new(pathfinder)
-}
@@ -3,26 +3,175 @@

 //! Collection of initialization steps used by client implementations

-use crate::client::key_manager::KeyManager;
+use crate::client::base_client::storage::gateway_details::{
+    GatewayDetailsStore, PersistedGatewayDetails,
+};
+use crate::client::key_manager::persistence::KeyStore;
+use crate::client::key_manager::ManagedKeys;
+use crate::init::helpers::{choose_gateway_by_latency, current_gateways, uniformly_random_gateway};
 use crate::{
-    config::{
-        persistence::key_pathfinder::ClientKeyPathfinder, ClientCoreConfigTrait, Config,
-        GatewayEndpointConfig,
-    },
+    config::{Config, GatewayEndpointConfig},
    error::ClientCoreError,
 };
-use nym_config::NymConfig;
-use nym_credential_storage::storage::Storage;
-use nym_crypto::asymmetric::{encryption, identity};
-use nym_gateway_requests::registration::handshake::SharedKeys;
+use nym_crypto::asymmetric::identity;
 use nym_sphinx::addressing::{clients::Recipient, nodes::NodeIdentity};
+use nym_topology::gateway;
+use nym_validator_client::client::IdentityKey;
+use rand::rngs::OsRng;
 use serde::Serialize;
-use std::fmt::Display;
-use std::sync::Arc;
-use tap::TapFallible;
+use std::fmt::{Debug, Display};
 use url::Url;

-mod helpers;
+pub mod helpers;
+
+// TODO: rename to something better...
+#[derive(Debug)]
+pub struct InitialisationDetails {
+    pub gateway_details: GatewayEndpointConfig,
+    pub managed_keys: ManagedKeys,
+}
+
+impl InitialisationDetails {
+    pub fn new(gateway_details: GatewayEndpointConfig, managed_keys: ManagedKeys) -> Self {
+        InitialisationDetails {
+            gateway_details,
+            managed_keys,
+        }
+    }
+
+    pub async fn try_load<K, D>(key_store: &K, details_store: &D) -> Result<Self, ClientCoreError>
+    where
+        K: KeyStore,
+        D: GatewayDetailsStore,
+        K::StorageError: Send + Sync + 'static,
+        D::StorageError: Send + Sync + 'static,
+    {
+        let loaded_details = _load_gateway_details(details_store).await?;
+        let loaded_keys = _load_managed_keys(key_store).await?;
+
+        if !loaded_details.verify(&loaded_keys.must_get_gateway_shared_key()) {
+            return Err(ClientCoreError::MismatchedGatewayDetails {
+                gateway_id: loaded_details.details.gateway_id,
+            });
+        }
+
+        Ok(InitialisationDetails {
+            gateway_details: loaded_details.into(),
+            managed_keys: loaded_keys,
+        })
+    }
+
+    pub fn client_address(&self) -> Result<Recipient, ClientCoreError> {
+        let client_recipient = Recipient::new(
+            *self.managed_keys.identity_public_key(),
+            *self.managed_keys.encryption_public_key(),
+            // TODO: below only works under assumption that gateway address == gateway id
+            // (which currently is true)
+            NodeIdentity::from_base58_string(&self.gateway_details.gateway_id)?,
+        );
+
+        Ok(client_recipient)
+    }
+}
+
+#[derive(Debug, Clone)]
+pub enum GatewaySetup {
+    /// The gateway specification MUST BE loaded from the underlying storage.
+    MustLoad,
+
+    /// Specifies usage of a new, random, gateway.
+    New {
+        /// Should the new gateway be selected based on latency.
+        by_latency: bool,
+    },
+    Specified {
+        /// Identity key of the gateway we want to try to use.
+        gateway_identity: IdentityKey,
+    },
+    Predefined {
+        /// Full gateway configuration
+        details: PersistedGatewayDetails,
+    },
+}
+
+impl From<PersistedGatewayDetails> for GatewaySetup {
+    fn from(details: PersistedGatewayDetails) -> Self {
+        GatewaySetup::Predefined { details }
+    }
+}
+
+impl From<IdentityKey> for GatewaySetup {
+    fn from(gateway_identity: IdentityKey) -> Self {
+        GatewaySetup::Specified { gateway_identity }
+    }
+}
+
+impl Default for GatewaySetup {
+    fn default() -> Self {
+        GatewaySetup::New { by_latency: false }
+    }
+}
+
+impl GatewaySetup {
+    pub fn new_fresh(
+        gateway_identity: Option<String>,
+        latency_based_selection: Option<bool>,
+    ) -> Self {
+        if let Some(gateway_identity) = gateway_identity {
+            GatewaySetup::Specified { gateway_identity }
+        } else {
+            GatewaySetup::New {
+                by_latency: latency_based_selection.unwrap_or_default(),
+            }
+        }
+    }
+
+    pub fn is_must_load(&self) -> bool {
+        matches!(self, GatewaySetup::MustLoad)
+    }
+
+    pub fn has_full_details(&self) -> bool {
+        matches!(self, GatewaySetup::Predefined { .. }) || self.is_must_load()
+    }
+
+    pub async fn choose_gateway(
+        &self,
+        gateways: &[gateway::Node],
+    ) -> Result<GatewayEndpointConfig, ClientCoreError> {
+        match self {
+            GatewaySetup::New { by_latency } => {
+                let mut rng = OsRng;
+                if *by_latency {
+                    choose_gateway_by_latency(&mut rng, gateways).await
+                } else {
+                    uniformly_random_gateway(&mut rng, gateways)
+                }
+            }
+            .map(Into::into),
+            GatewaySetup::Specified { gateway_identity } => {
+                let user_gateway = identity::PublicKey::from_base58_string(gateway_identity)
+                    .map_err(ClientCoreError::UnableToCreatePublicKeyFromGatewayId)?;
+
+                gateways
+                    .iter()
+                    .find(|gateway| gateway.identity_key == user_gateway)
+                    .ok_or_else(|| ClientCoreError::NoGatewayWithId(gateway_identity.to_string()))
+                    .cloned()
+            }
+            .map(Into::into),
+            _ => Err(ClientCoreError::UnexpectedGatewayDetails),
+        }
+    }
+
+    pub async fn try_get_new_gateway_details(
+        &self,
+        validator_servers: &[Url],
+    ) -> Result<GatewayEndpointConfig, ClientCoreError> {
+        let mut rng = OsRng;
+        let gateways = current_gateways(&mut rng, validator_servers).await?;
+        self.choose_gateway(&gateways).await
+    }
+}

 /// Struct describing the results of the client initialization procedure.
 #[derive(Debug, Serialize)]
@@ -36,17 +185,14 @@ pub struct InitResults {
 }

 impl InitResults {
-    pub fn new<T>(config: &Config<T>, address: &Recipient) -> Self
-    where
-        T: NymConfig,
-    {
+    pub fn new(config: &Config, address: &Recipient, gateway: &GatewayEndpointConfig) -> Self {
        Self {
-            version: config.get_version().to_string(),
-            id: config.get_id(),
+            version: config.client.version.clone(),
+            id: config.client.id.clone(),
            identity_key: address.identity().to_base58_string(),
            encryption_key: address.encryption_key().to_base58_string(),
-            gateway_id: config.get_gateway_id(),
-            gateway_listener: config.get_gateway_listener(),
+            gateway_id: gateway.gateway_id.clone(),
+            gateway_listener: gateway.gateway_listener.clone(),
        }
    }
 }
@@ -62,171 +208,214 @@ impl Display for InitResults {
    }
 }

-/// Authenticate and register with a gateway.
-/// Either pick one at random by querying the available gateways from the nym-api, or use the
-/// chosen one if it's among the available ones.
-/// The shared key is added to the supplied `KeyManager` and the endpoint details are returned.
-pub async fn register_with_gateway<St>(
-    identity_keys: Arc<identity::KeyPair>,
-    nym_api_endpoints: Vec<Url>,
-    chosen_gateway_id: Option<identity::PublicKey>,
-    by_latency: bool,
-) -> Result<(GatewayEndpointConfig, Arc<SharedKeys>), ClientCoreError>
+// helpers for error wrapping
+async fn _store_gateway_details<D>(
+    details_store: &D,
+    details: &PersistedGatewayDetails,
+) -> Result<(), ClientCoreError>
 where
-    St: Storage,
-    <St as Storage>::StorageError: Send + Sync + 'static,
+    D: GatewayDetailsStore,
+    D::StorageError: Send + Sync + 'static,
 {
-    // Get the gateway details of the gateway we will use
-    let gateway =
-        helpers::query_gateway_details(nym_api_endpoints, chosen_gateway_id, by_latency).await?;
-    log::debug!("Querying gateway gives: {gateway}");
-
-    // Establish connection, authenticate and generate keys for talking with the gateway
-    let shared_keys = helpers::register_with_gateway::<St>(&gateway, identity_keys).await?;
-
-    Ok((gateway.into(), shared_keys))
+    details_store
+        .store_gateway_details(details)
+        .await
+        .map_err(|source| ClientCoreError::GatewayDetailsStoreError {
+            source: Box::new(source),
+        })
 }

-/// Convenience function for setting up the gateway for a client given a `Config`. Depending on the
-/// arguments given it will do the sensible thing. Either it will
-///
-/// a. Reuse existing gateway configuration from storage.
-/// b. Create a new gateway configuration but keep existing keys. This assumes that the caller
-///    knows what they are doing and that the keys match the requested gateway.
-/// c. Create a new gateway configuration with a newly registered gateway and keys.
-#[cfg(not(target_arch = "wasm32"))]
-pub async fn setup_gateway_from_config<C, T, St>(
-    register_gateway: bool,
-    user_chosen_gateway_id: Option<identity::PublicKey>,
-    config: &Config<T>,
-    by_latency: bool,
-) -> Result<GatewayEndpointConfig, ClientCoreError>
+async fn _load_gateway_details<D>(
+    details_store: &D,
+) -> Result<PersistedGatewayDetails, ClientCoreError>
 where
-    C: NymConfig + ClientCoreConfigTrait,
-    T: NymConfig,
-    St: Storage,
-    <St as Storage>::StorageError: Send + Sync + 'static,
+    D: GatewayDetailsStore,
+    D::StorageError: Send + Sync + 'static,
 {
-    let id = config.get_id();
+    details_store
+        .load_gateway_details()
+        .await
+        .map_err(|source| ClientCoreError::UnavailableGatewayDetails {
+            source: Box::new(source),
+        })
+}

-    // If we are not going to register gateway, and an explicitly chosen gateway is not passed in,
-    // load the existing configuration file
-    if !register_gateway && user_chosen_gateway_id.is_none() {
-        eprintln!("Not registering gateway, will reuse existing config and keys");
-        return load_existing_gateway_config::<C>(&id);
+async fn _load_managed_keys<K>(key_store: &K) -> Result<ManagedKeys, ClientCoreError>
+where
+    K: KeyStore,
+    K::StorageError: Send + Sync + 'static,
+{
+    ManagedKeys::try_load(key_store)
+        .await
+        .map_err(|source| ClientCoreError::KeyStoreError {
+            source: Box::new(source),
+        })
+}
+
+fn ensure_valid_details(
+    details: &PersistedGatewayDetails,
+    loaded_keys: &ManagedKeys,
+) -> Result<(), ClientCoreError> {
+    if !details.verify(&loaded_keys.must_get_gateway_shared_key()) {
+        Err(ClientCoreError::MismatchedGatewayDetails {
+            gateway_id: details.details.gateway_id.clone(),
+        })
+    } else {
+        Ok(())
    }
+}

-    // Else, we proceed by querying the nym-api
-    let gateway = helpers::query_gateway_details(
-        config.get_nym_api_endpoints(),
-        user_chosen_gateway_id,
-        by_latency,
-    )
-    .await?;
-    log::debug!("Querying gateway gives: {}", gateway);
+pub async fn setup_gateway_from<K, D>(
+    setup: &GatewaySetup,
+    key_store: &K,
+    details_store: &D,
+    overwrite_data: bool,
+    gateways: Option<&[gateway::Node]>,
+) -> Result<InitialisationDetails, ClientCoreError>
+where
+    K: KeyStore,
+    D: GatewayDetailsStore,
+    K::StorageError: Send + Sync + 'static,
+    D::StorageError: Send + Sync + 'static,
+{
+    let mut rng = OsRng;

-    // If we are not registering, just return this and assume the caller has the keys already and
-    // wants to keep the,
-    if !register_gateway && user_chosen_gateway_id.is_some() {
-        eprintln!("Using gateway provided by user, keeping existing keys");
-        return Ok(gateway.into());
-    }
+    // try load gateway details
+    let loaded_details = _load_gateway_details(details_store).await;

-    let key_store = helpers::on_disk_key_store(config);
-    let mut rng = rand::thread_rng();
-    let mut managed_keys =
-        crate::client::key_manager::ManagedKeys::load_or_generate(&mut rng, &key_store).await;
+    // try load keys and decide what to do based on the GatewaySetup
+    let mut managed_keys = match ManagedKeys::try_load(key_store).await {
+        Ok(loaded_keys) => {
+            match setup {
+                GatewaySetup::MustLoad => {
+                    // get EVERYTHING from the storage
+                    let details = loaded_details?;
+                    ensure_valid_details(&details, &loaded_keys)?;

-    // Create new keys and derive our identity
+                    // no need to persist anything as we got everything from the storage
+                    return Ok(InitialisationDetails::new(details.into(), loaded_keys));
+                }
+                GatewaySetup::Predefined { details } => {
+                    // we already have defined gateway details AND a shared key
+                    ensure_valid_details(details, &loaded_keys)?;
+
+                    // if nothing was stored or we're allowed to overwrite what's there, just persist the passed data
+                    if overwrite_data || loaded_details.is_err() {
+                        _store_gateway_details(details_store, details).await?;
+                    }
+
+                    return Ok(InitialisationDetails::new(
+                        details.clone().into(),
+                        loaded_keys,
+                    ));
+                }
+                GatewaySetup::Specified { gateway_identity } => {
+                    // if that data was already stored...
+                    if let Ok(existing_gateway) = loaded_details {
+                        ensure_valid_details(&existing_gateway, &loaded_keys)?;
+                        if &existing_gateway.details.gateway_id != gateway_identity
+                            && !overwrite_data
+                        {
+                            // if our loaded details don't match requested value and we CANT overwrite it...
+                            return Err(ClientCoreError::UnexpectedGatewayDetails);
+                        } else if &existing_gateway.details.gateway_id == gateway_identity {
+                            // if they do match up, just return it
+                            return Ok(InitialisationDetails::new(
+                                existing_gateway.into(),
+                                loaded_keys,
+                            ));
+                        }
+                    }
+
+                    // we didn't get full details from the store and we have loaded some keys
+                    // so we can only continue if we're allowed to overwrite keys
+                    if overwrite_data {
+                        ManagedKeys::generate_new(&mut rng)
+                    } else {
+                        return Err(ClientCoreError::ForbiddenKeyOverwrite);
+                    }
+                }
+                GatewaySetup::New { .. } => {
+                    if let Ok(existing_gateway) = loaded_details {
+                        ensure_valid_details(&existing_gateway, &loaded_keys)?;
+                        return Ok(InitialisationDetails::new(
+                            existing_gateway.into(),
+                            loaded_keys,
+                        ));
+                    }
+
+                    // we didn't get full details from the store and we have loaded some keys
+                    // so we can only continue if we're allowed to overwrite keys
+                    if overwrite_data {
+                        ManagedKeys::generate_new(&mut rng)
+                    } else {
+                        return Err(ClientCoreError::ForbiddenKeyOverwrite);
+                    }
+                }
+            }
+        }
+        Err(_) => {
+            // if we failed to load the keys, ensure we didn't provide gateway details in some form
+            // (in that case we CAN'T generate new keys
+            if setup.has_full_details() {
+                return Err(ClientCoreError::UnavailableSharedKey);
+            }
+            ManagedKeys::generate_new(&mut rng)
+        }
+    };
+
+    // choose gateway
+    let gateway_details = setup.choose_gateway(gateways.unwrap_or_default()).await?;
+
+    // get our identity key
    let our_identity = managed_keys.identity_keypair();

    // Establish connection, authenticate and generate keys for talking with the gateway
-    eprintln!("Registering with new gateway");
-    let shared_keys = helpers::register_with_gateway::<St>(&gateway, our_identity).await?;
+    let shared_keys = helpers::register_with_gateway(&gateway_details, our_identity).await?;
+
+    let persisted_details = PersistedGatewayDetails::new(gateway_details, &shared_keys);
+
+    // persist gateway keys
    managed_keys
-        .deal_with_gateway_key(shared_keys, &key_store)
+        .deal_with_gateway_key(shared_keys, key_store)
        .await
        .map_err(|source| ClientCoreError::KeyStoreError {
            source: Box::new(source),
        })?;

-    Ok(gateway.into())
+    // persist gateway config
+    _store_gateway_details(details_store, &persisted_details).await?;
+
+    Ok(InitialisationDetails::new(
+        persisted_details.into(),
+        managed_keys,
+    ))
 }

-/// Read and reuse the existing gateway configuration from a file that was generate earlier.
-pub fn load_existing_gateway_config<T>(id: &str) -> Result<GatewayEndpointConfig, ClientCoreError>
+pub async fn setup_gateway<K, D>(
+    setup: &GatewaySetup,
+    key_store: &K,
+    details_store: &D,
+    overwrite_data: bool,
+    validator_servers: Option<&[Url]>,
+) -> Result<InitialisationDetails, ClientCoreError>
 where
-    T: NymConfig + ClientCoreConfigTrait,
+    K: KeyStore,
+    D: GatewayDetailsStore,
+    K::StorageError: Send + Sync + 'static,
+    D::StorageError: Send + Sync + 'static,
 {
-    T::load_from_file(id)
-        .map(|existing_config| existing_config.get_gateway_endpoint().clone())
-        .map_err(|err| {
-            log::error!(
-                "Unable to configure gateway: {err}. \n
-                Seems like the client was already initialized but it was not possible to read \
-                the existing configuration file. \n
-                CAUTION: Consider backing up your gateway keys and try force gateway registration, or \
-                removing the existing configuration and starting over."
-            );
-            ClientCoreError::CouldNotLoadExistingGatewayConfiguration(err)
-        })
-}
+    let mut rng = OsRng;
+    let gateways = current_gateways(&mut rng, validator_servers.unwrap_or_default()).await?;

-/// Get the full client address from the client keys and the gateway identity
-pub fn get_client_address(
-    key_manager: &KeyManager,
-    gateway_config: &GatewayEndpointConfig,
-) -> Recipient {
-    Recipient::new(
-        *key_manager.identity_keypair().public_key(),
-        *key_manager.encryption_keypair().public_key(),
-        // TODO: below only works under assumption that gateway address == gateway id
-        // (which currently is true)
-        NodeIdentity::from_base58_string(&gateway_config.gateway_id).unwrap(),
+    setup_gateway_from(
+        setup,
+        key_store,
+        details_store,
+        overwrite_data,
+        Some(&gateways),
    )
-}
-
-pub fn load_identity_keys(
-    pathfinder: &ClientKeyPathfinder,
-) -> Result<identity::KeyPair, ClientCoreError> {
-    let identity_keypair: identity::KeyPair =
-        nym_pemstore::load_keypair(&pathfinder.identity_key_pair_path())
-            .tap_err(|_| log::error!("Failed to read stored identity key files"))?;
-    Ok(identity_keypair)
-}
-
-/// Get the client address by loading the keys from stored files.
-pub fn get_client_address_from_stored_keys<T>(
-    config: &Config<T>,
-) -> Result<Recipient, ClientCoreError>
-where
-    T: nym_config::NymConfig,
-{
-    fn load_sphinx_keys(
-        pathfinder: &ClientKeyPathfinder,
-    ) -> Result<encryption::KeyPair, ClientCoreError> {
-        let sphinx_keypair: encryption::KeyPair =
-            nym_pemstore::load_keypair(&nym_pemstore::KeyPairPath::new(
-                pathfinder.private_encryption_key().to_owned(),
-                pathfinder.public_encryption_key().to_owned(),
-            ))
-            .tap_err(|_| log::error!("Failed to read stored sphinx key files"))?;
-        Ok(sphinx_keypair)
-    }
-
-    let pathfinder = ClientKeyPathfinder::new_from_config(config);
-    let identity_keypair = load_identity_keys(&pathfinder)?;
-    let sphinx_keypair = load_sphinx_keys(&pathfinder)?;
-
-    let client_recipient = Recipient::new(
-        *identity_keypair.public_key(),
-        *sphinx_keypair.public_key(),
-        // TODO: below only works under assumption that gateway address == gateway id
-        // (which currently is true)
-        NodeIdentity::from_base58_string(config.get_gateway_id())?,
-    );
-
-    Ok(client_recipient)
+    .await
 }

 pub fn output_to_json<T: Serialize>(init_results: &T, output_file: &str) {
@@ -12,6 +12,8 @@ use futures::{SinkExt, StreamExt};
 use log::*;
 use nym_bandwidth_controller::BandwidthController;
 use nym_coconut_interface::Credential;
+use nym_credential_storage::ephemeral_storage::EphemeralStorage as EphemeralCredentialStorage;
+use nym_credential_storage::storage::Storage as CredentialStorage;
 use nym_crypto::asymmetric::identity;
 use nym_gateway_requests::authentication::encrypted_address::EncryptedAddressBytes;
 use nym_gateway_requests::iv::IV;
@@ -26,7 +28,6 @@ use std::sync::Arc;
 use std::time::Duration;
 use tungstenite::protocol::Message;

-use nym_credential_storage::storage::Storage;
 #[cfg(not(target_arch = "wasm32"))]
 use nym_validator_client::nyxd::traits::DkgQueryClient;
 #[cfg(not(target_arch = "wasm32"))]
@@ -42,7 +43,7 @@ use wasm_utils::websocket::JSWebsocket;
 const DEFAULT_RECONNECTION_ATTEMPTS: usize = 10;
 const DEFAULT_RECONNECTION_BACKOFF: Duration = Duration::from_secs(5);

-pub struct GatewayClient<C, St: Storage> {
+pub struct GatewayClient<C, St> {
    authenticated: bool,
    disabled_credentials_mode: bool,
    bandwidth_remaining: i64,
@@ -68,12 +69,7 @@ pub struct GatewayClient<C, St: Storage> {
    shutdown: TaskClient,
 }

-impl<C, St> GatewayClient<C, St>
-where
-    C: Sync + Send,
-    St: Storage,
-    <St as Storage>::StorageError: Send + Sync + 'static,
-{
+impl<C, St> GatewayClient<C, St> {
    // TODO: put it all in a Config struct
    #[allow(clippy::too_many_arguments)]
    pub fn new(
@@ -124,40 +120,6 @@ where
        self.reconnection_backoff = backoff
    }

-    pub fn new_init(
-        gateway_address: String,
-        gateway_identity: identity::PublicKey,
-        local_identity: Arc<identity::KeyPair>,
-        response_timeout_duration: Duration,
-    ) -> Self {
-        use futures::channel::mpsc;
-
-        // note: this packet_router is completely invalid in normal circumstances, but "works"
-        // perfectly fine here, because it's not meant to be used
-        let (ack_tx, _) = mpsc::unbounded();
-        let (mix_tx, _) = mpsc::unbounded();
-        let shutdown = TaskClient::dummy();
-        let packet_router = PacketRouter::new(ack_tx, mix_tx, shutdown.clone());
-
-        GatewayClient::<C, St> {
-            authenticated: false,
-            disabled_credentials_mode: true,
-            bandwidth_remaining: 0,
-            gateway_address,
-            gateway_identity,
-            local_identity,
-            shared_key: None,
-            connection: SocketState::NotConnected,
-            packet_router,
-            response_timeout_duration,
-            bandwidth_controller: None,
-            should_reconnect_on_failure: false,
-            reconnection_attempts: DEFAULT_RECONNECTION_ATTEMPTS,
-            reconnection_backoff: DEFAULT_RECONNECTION_BACKOFF,
-            shutdown,
-        }
-    }
-
    pub fn gateway_identity(&self) -> identity::PublicKey {
        self.gateway_identity
    }
@@ -569,7 +531,9 @@ where

    pub async fn claim_bandwidth(&mut self) -> Result<(), GatewayClientError>
    where
-        C: DkgQueryClient,
+        C: DkgQueryClient + Send + Sync,
+        St: CredentialStorage,
+        <St as CredentialStorage>::StorageError: Send + Sync + 'static,
    {
        if !self.authenticated {
            return Err(GatewayClientError::NotAuthenticated);
@@ -607,7 +571,7 @@ where
    fn estimate_required_bandwidth(&self, packets: &[MixPacket]) -> i64 {
        packets
            .iter()
-            .map(|packet| packet.sphinx_packet().len())
+            .map(|packet| packet.packet().len())
            .sum::<usize>() as i64
    }

@@ -615,6 +579,8 @@ where
        &mut self,
        packets: Vec<MixPacket>,
    ) -> Result<(), GatewayClientError> {
+        debug!("Sending {} mix packets", packets.len());
+
        if !self.authenticated {
            return Err(GatewayClientError::NotAuthenticated);
        }
@@ -659,9 +625,10 @@ where
    ) -> Result<(), GatewayClientError> {
        if let Err(err) = self.send_websocket_message_without_response(msg).await {
            if err.is_closed_connection() && self.should_reconnect_on_failure {
-                info!("Going to attempt a reconnection");
+                debug!("Going to attempt a reconnection");
                self.attempt_reconnection().await
            } else {
+                warn!("{err}");
                Err(err)
            }
        } else {
@@ -688,9 +655,9 @@ where
        if !self.authenticated {
            return Err(GatewayClientError::NotAuthenticated);
        }
-        if (mix_packet.sphinx_packet().len() as i64) > self.bandwidth_remaining {
+        if (mix_packet.packet().len() as i64) > self.bandwidth_remaining {
            return Err(GatewayClientError::NotEnoughBandwidth(
-                mix_packet.sphinx_packet().len() as i64,
+                mix_packet.packet().len() as i64,
                self.bandwidth_remaining,
            ));
        }
@@ -757,7 +724,7 @@ where
        Ok(())
    }

-    async fn try_reconnect(&mut self) -> Result<(), GatewayClientError> {
+    pub async fn try_reconnect(&mut self) -> Result<(), GatewayClientError> {
        if !self.connection.is_established() {
            self.establish_connection().await?;
        }
@@ -771,9 +738,17 @@ where
        Ok(())
    }

+    pub async fn disconnect(&mut self) -> Result<(), GatewayClientError> {
+        self.recover_socket_connection().await?;
+        self.connection = SocketState::NotConnected;
+        Ok(())
+    }
+
    pub async fn authenticate_and_start(&mut self) -> Result<Arc<SharedKeys>, GatewayClientError>
    where
-        C: DkgQueryClient,
+        C: DkgQueryClient + Send + Sync,
+        St: CredentialStorage,
+        <St as CredentialStorage>::StorageError: Send + Sync + 'static,
    {
        if !self.connection.is_established() {
            self.establish_connection().await?;
@@ -792,3 +767,40 @@ where
        Ok(shared_key)
    }
 }
+
+impl<C> GatewayClient<C, EphemeralCredentialStorage> {
+    // for initialisation we do not need credential storage. Though it's still a bit weird we have to set the generic...
+    pub fn new_init(
+        gateway_address: String,
+        gateway_identity: identity::PublicKey,
+        local_identity: Arc<identity::KeyPair>,
+        response_timeout_duration: Duration,
+    ) -> Self {
+        use futures::channel::mpsc;
+
+        // note: this packet_router is completely invalid in normal circumstances, but "works"
+        // perfectly fine here, because it's not meant to be used
+        let (ack_tx, _) = mpsc::unbounded();
+        let (mix_tx, _) = mpsc::unbounded();
+        let shutdown = TaskClient::dummy();
+        let packet_router = PacketRouter::new(ack_tx, mix_tx, shutdown.clone());
+
+        GatewayClient::<C, EphemeralCredentialStorage> {
+            authenticated: false,
+            disabled_credentials_mode: true,
+            bandwidth_remaining: 0,
+            gateway_address,
+            gateway_identity,
+            local_identity,
+            shared_key: None,
+            connection: SocketState::NotConnected,
+            packet_router,
+            response_timeout_duration,
+            bandwidth_controller: None,
+            should_reconnect_on_failure: false,
+            reconnection_attempts: DEFAULT_RECONNECTION_ATTEMPTS,
+            reconnection_backoff: DEFAULT_RECONNECTION_BACKOFF,
+            shutdown,
+        }
+    }
+}
@@ -48,12 +48,21 @@ impl PacketRouter {
        // data he takes the SURB-ACK and first hop address.
        // currently SURB-ACKs are attached in EVERY packet, even cover, so this is always true
        let ack_overhead = PacketSize::AckPacket.size() + MAX_NODE_ADDRESS_UNPADDED_LEN;
+        let outfox_ack_overhead =
+            PacketSize::OutfoxAckPacket.size() + MAX_NODE_ADDRESS_UNPADDED_LEN;

        for received_packet in unwrapped_packets {
-            if received_packet.len() == PacketSize::AckPacket.plaintext_size() {
+            if received_packet.len() == PacketSize::AckPacket.plaintext_size()
+            // we don't know the real size of the payload, it could be anything <= 48 bytes
+                || received_packet.len() <= PacketSize::OutfoxAckPacket.plaintext_size()
+            {
                received_acks.push(received_packet);
            } else if received_packet.len()
                == PacketSize::RegularPacket.plaintext_size() - ack_overhead
+                || received_packet.len()
+                    == PacketSize::OutfoxRegularPacket.plaintext_size() - outfox_ack_overhead
+                || received_packet.len()
+                    == PacketSize::OutfoxRegularPacket.size() - outfox_ack_overhead
            {
                trace!("routing regular packet");
                received_messages.push(received_packet);
@@ -4,10 +4,11 @@
 use futures::channel::mpsc;
 use futures::StreamExt;
 use log::*;
-use nym_sphinx::framing::codec::SphinxCodec;
-use nym_sphinx::framing::packet::FramedSphinxPacket;
-use nym_sphinx::params::PacketMode;
-use nym_sphinx::{addressing::nodes::NymNodeRoutingAddress, SphinxPacket};
+use nym_sphinx::addressing::nodes::NymNodeRoutingAddress;
+use nym_sphinx::framing::codec::NymCodec;
+use nym_sphinx::framing::packet::FramedNymPacket;
+use nym_sphinx::params::PacketType;
+use nym_sphinx::NymPacket;
 use std::collections::HashMap;
 use std::io;
 use std::net::SocketAddr;
@@ -50,8 +51,8 @@ pub trait SendWithoutResponse {
    fn send_without_response(
        &mut self,
        address: NymNodeRoutingAddress,
-        packet: SphinxPacket,
-        packet_mode: PacketMode,
+        packet: NymPacket,
+        packet_type: PacketType,
    ) -> io::Result<()>;
 }

@@ -61,12 +62,12 @@ pub struct Client {
 }

 struct ConnectionSender {
-    channel: mpsc::Sender<FramedSphinxPacket>,
+    channel: mpsc::Sender<FramedNymPacket>,
    current_reconnection_attempt: Arc<AtomicU32>,
 }

 impl ConnectionSender {
-    fn new(channel: mpsc::Sender<FramedSphinxPacket>) -> Self {
+    fn new(channel: mpsc::Sender<FramedNymPacket>) -> Self {
        ConnectionSender {
            channel,
            current_reconnection_attempt: Arc::new(AtomicU32::new(0)),
@@ -84,7 +85,7 @@ impl Client {

    async fn manage_connection(
        address: SocketAddr,
-        receiver: mpsc::Receiver<FramedSphinxPacket>,
+        receiver: mpsc::Receiver<FramedNymPacket>,
        connection_timeout: Duration,
        current_reconnection: &AtomicU32,
    ) {
@@ -96,7 +97,7 @@ impl Client {
                    debug!("Managed to establish connection to {}", address);
                    // if we managed to connect, reset the reconnection count (whatever it might have been)
                    current_reconnection.store(0, Ordering::Release);
-                    Framed::new(stream, SphinxCodec)
+                    Framed::new(stream, NymCodec)
                }
                Err(err) => {
                    debug!(
@@ -148,11 +149,7 @@ impl Client {
        }
    }

-    fn make_connection(
-        &mut self,
-        address: NymNodeRoutingAddress,
-        pending_packet: FramedSphinxPacket,
-    ) {
+    fn make_connection(&mut self, address: NymNodeRoutingAddress, pending_packet: FramedNymPacket) {
        let (mut sender, receiver) = mpsc::channel(self.config.maximum_connection_buffer_size);

        // this CAN'T fail because we just created the channel which has a non-zero capacity
@@ -200,12 +197,12 @@ impl SendWithoutResponse for Client {
    fn send_without_response(
        &mut self,
        address: NymNodeRoutingAddress,
-        packet: SphinxPacket,
-        packet_mode: PacketMode,
+        packet: NymPacket,
+        packet_type: PacketType,
    ) -> io::Result<()> {
        trace!("Sending packet to {:?}", address);
        let framed_packet =
-            FramedSphinxPacket::new(packet, packet_mode, self.config.use_legacy_version);
+            FramedNymPacket::new(packet, packet_type, self.config.use_legacy_version);

        if let Some(sender) = self.conn_new.get_mut(&address) {
            if let Err(err) = sender.channel.try_send(framed_packet) {
@@ -59,14 +59,14 @@ impl PacketForwarder {
                     trace!("Going to forward packet to {:?}", mix_packet.next_hop());

                    let next_hop = mix_packet.next_hop();
-                    let packet_mode = mix_packet.packet_mode();
-                    let sphinx_packet = mix_packet.into_sphinx_packet();
+                    let packet_type = mix_packet.packet_type();
+                    let packet = mix_packet.into_packet();
                    // we don't care about responses, we just want to fire packets
                    // as quickly as possible

                    if let Err(err) =
                        self.mixnet_client
-                            .send_without_response(next_hop, sphinx_packet, packet_mode)
+                            .send_without_response(next_hop, packet, packet_type)
                    {
                        debug!("failed to forward the packet - {err}")
                    }
@@ -11,7 +11,9 @@ use nym_api_requests::models::{
 };
 use nym_coconut_dkg_common::types::NodeIndex;
 use nym_coconut_interface::VerificationKey;
-pub use nym_mixnet_contract_common::{mixnode::MixNodeDetails, GatewayBond, IdentityKeyRef, MixId};
+pub use nym_mixnet_contract_common::{
+    mixnode::MixNodeDetails, GatewayBond, IdentityKey, IdentityKeyRef, MixId,
+};
 use url::Url;

 #[cfg(feature = "nyxd-client")]
@@ -31,7 +33,7 @@ use nym_mixnet_contract_common::{
    families::{Family, FamilyHead},
    mixnode::MixNodeBond,
    pending_events::{PendingEpochEvent, PendingIntervalEvent},
-    Delegation, IdentityKey, RewardedSetNodeStatus, UnbondedMixnode,
+    Delegation, RewardedSetNodeStatus, UnbondedMixnode,
 };
 #[cfg(feature = "nyxd-client")]
 use nym_network_defaults::NymNetworkDetails;
@@ -7,11 +7,14 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

 [dependencies]
-cfg-if = "1.0.0"
-handlebars = "3.0.1"
+dirs = { version = "5.0.1", optional = true }
+handlebars = "3.5.5"
 log = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
-toml = "0.5.6"
+toml = "0.7.4"
 url = "2.2"

 nym-network-defaults = { path = "../network-defaults" }
+
+[features]
+default = ["dirs"]
@@ -0,0 +1,208 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use nym_network_defaults::mainnet::read_var_if_not_default;
+use nym_network_defaults::var_names::CONFIGURED;
+use std::any::type_name;
+use std::fmt::Debug;
+use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
+use std::str::FromStr;
+
+pub const MISSING_VALUE: &str = "MISSING VALUE";
+
+/// Helper for providing default value for templated config fields.
+pub fn missing_string_value<T: From<String>>() -> T {
+    MISSING_VALUE.to_string().into()
+}
+
+/// Helper for providing default INADDR_ANY IpAddr, i.e. `0.0.0.0`
+pub fn inaddr_any() -> IpAddr {
+    IpAddr::V4(Ipv4Addr::UNSPECIFIED)
+}
+
+/// Helper for providing default IN6ADDR_ANY_INIT IpAddr, i.e. `::`
+pub fn in6addr_any_init() -> IpAddr {
+    IpAddr::V6(Ipv6Addr::UNSPECIFIED)
+}
+
+/// Helper for providing binding warnings if node tries to bind to any of those
+pub const SPECIAL_ADDRESSES: &[IpAddr] = &[
+    IpAddr::V4(Ipv4Addr::LOCALHOST),
+    IpAddr::V4(Ipv4Addr::UNSPECIFIED),
+    IpAddr::V4(Ipv4Addr::BROADCAST),
+    IpAddr::V6(Ipv6Addr::LOCALHOST),
+    IpAddr::V6(Ipv6Addr::UNSPECIFIED),
+];
+
+// TODO: is it really part of 'Config'?
+pub trait OptionalSet {
+    /// If the value is available (i.e. `Some`), the provided closure is applied.
+    /// Otherwise `self` is returned with no modifications.
+    fn with_optional<F, T>(self, f: F, val: Option<T>) -> Self
+    where
+        F: Fn(Self, T) -> Self,
+        Self: Sized,
+    {
+        if let Some(val) = val {
+            f(self, val)
+        } else {
+            self
+        }
+    }
+
+    /// If the value is available (i.e. `Some`) it is validated and then the provided closure is applied.
+    /// Otherwise `self` is returned with no modifications.
+    fn with_validated_optional<F, T, V, E>(
+        self,
+        f: F,
+        value: Option<T>,
+        validate: V,
+    ) -> Result<Self, E>
+    where
+        F: Fn(Self, T) -> Self,
+        V: Fn(&T) -> Result<(), E>,
+        Self: Sized,
+    {
+        if let Some(val) = value {
+            validate(&val)?;
+            Ok(f(self, val))
+        } else {
+            Ok(self)
+        }
+    }
+
+    /// If the value is available (i.e. `Some`), the provided closure is applied.
+    /// Otherwise, if the environment was configured and the corresponding variable was set,
+    /// the value is parsed using the `FromStr` implementation and the closure is applied on that instead.
+    /// Finally, if none of those were available, `self` is returned with no modifications.
+    fn with_optional_env<F, T>(self, f: F, val: Option<T>, env_var: &str) -> Self
+    where
+        F: Fn(Self, T) -> Self,
+        T: FromStr,
+        <T as FromStr>::Err: Debug,
+        Self: Sized,
+    {
+        if let Some(val) = val {
+            return f(self, val);
+        } else if std::env::var(CONFIGURED).is_ok() {
+            if let Some(raw) = read_var_if_not_default(env_var) {
+                return f(
+                    self,
+                    raw.parse().unwrap_or_else(|err| {
+                        panic!(
+                            "failed to parse value of {raw} into type {}. the error was {:?}",
+                            type_name::<T>(),
+                            err
+                        )
+                    }),
+                );
+            }
+        }
+        self
+    }
+
+    /// If the value is available (i.e. `Some`), the provided closure is applied.
+    /// Otherwise, if the environment was configured and the corresponding variable was set,
+    /// the value is parsed using the provided parser and the closure is applied on that instead.
+    /// Finally, if none of those were available, `self` is returned with no modifications.
+    fn with_optional_custom_env<F, T, G>(
+        self,
+        f: F,
+        val: Option<T>,
+        env_var: &str,
+        parser: G,
+    ) -> Self
+    where
+        F: Fn(Self, T) -> Self,
+        G: Fn(&str) -> T,
+        Self: Sized,
+    {
+        if let Some(val) = val {
+            return f(self, val);
+        } else if std::env::var(CONFIGURED).is_ok() {
+            if let Some(raw) = read_var_if_not_default(env_var) {
+                return f(self, parser(&raw));
+            }
+        }
+        self
+    }
+}
+
+// helper for when we want to use `OptionalSet` on an inner field
+// (used by clients wanting to set the `BaseConfig` values)
+#[macro_export]
+macro_rules! define_optional_set_inner {
+    ( $x: ident, $inner_field_name: ident, $inner_field_typ: ty ) => {
+        impl $x {
+            pub fn with_optional_inner<F, T>(mut self, f: F, val: Option<T>) -> Self
+            where
+                F: Fn($inner_field_typ, T) -> $inner_field_typ,
+            {
+                self.$inner_field_name = self.$inner_field_name.with_optional(f, val);
+                self
+            }
+
+            pub fn with_validated_optional_inner<F, T, V, E>(
+                mut self,
+                f: F,
+                value: Option<T>,
+                validate: V,
+            ) -> Result<Self, E>
+            where
+                F: Fn($inner_field_typ, T) -> $inner_field_typ,
+                V: Fn(&T) -> Result<(), E>,
+            {
+                self.$inner_field_name = self
+                    .$inner_field_name
+                    .with_validated_optional(f, value, validate)?;
+                Ok(self)
+            }
+
+            pub fn with_optional_env_inner<F, T>(
+                mut self,
+                f: F,
+                val: Option<T>,
+                env_var: &str,
+            ) -> Self
+            where
+                F: Fn($inner_field_typ, T) -> $inner_field_typ,
+                T: FromStr,
+                <T as FromStr>::Err: Debug,
+            {
+                self.$inner_field_name = self.$inner_field_name.with_optional_env(f, val, env_var);
+                self
+            }
+
+            pub fn with_optional_custom_env_inner<F, T, G>(
+                mut self,
+                f: F,
+                val: Option<T>,
+                env_var: &str,
+                parser: G,
+            ) -> Self
+            where
+                F: Fn($inner_field_typ, T) -> $inner_field_typ,
+                G: Fn(&str) -> T,
+            {
+                self.$inner_field_name = self
+                    .$inner_field_name
+                    .with_optional_custom_env(f, val, env_var, parser);
+                self
+            }
+        }
+    };
+}
+
+// this function is only used for parsing values from the network defaults and thus the "expect" there are fine
+pub fn parse_urls(raw: &str) -> Vec<url::Url> {
+    raw.split(',')
+        .map(|raw_url| {
+            raw_url
+                .trim()
+                .parse()
+                .expect("one of the provided urls was invalid")
+        })
+        .collect()
+}
+
+impl<T> OptionalSet for T {}
@@ -0,0 +1,55 @@
+// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+// removed in 1.1.19/1.1.20
+pub mod nym_config {
+    use serde::de::DeserializeOwned;
+    use serde::Serialize;
+    use std::path::{Path, PathBuf};
+    use std::{fs, io};
+
+    pub const CONFIG_DIR: &str = "config";
+    pub const DATA_DIR: &str = "data";
+
+    // no need for anything to do with saving.
+    pub trait MigrationNymConfig: Serialize + DeserializeOwned {
+        fn config_file_name() -> String {
+            "config.toml".to_string()
+        }
+
+        fn default_root_directory() -> PathBuf;
+
+        fn default_data_directory(id: &str) -> PathBuf {
+            Self::default_data_directory_with_root(Self::default_root_directory(), id)
+        }
+
+        fn default_data_directory_with_root<P: AsRef<Path>>(root: P, id: &str) -> PathBuf {
+            root.as_ref().join(id).join(DATA_DIR)
+        }
+
+        fn default_config_directory(id: &str) -> PathBuf {
+            Self::default_config_directory_with_root(Self::default_root_directory(), id)
+        }
+
+        fn default_config_directory_with_root<P: AsRef<Path>>(root: P, id: &str) -> PathBuf {
+            root.as_ref().join(id).join(CONFIG_DIR)
+        }
+
+        fn default_config_file_path(id: &str) -> PathBuf {
+            Self::default_config_directory(id).join(Self::config_file_name())
+        }
+
+        fn load_from_file(id: &str) -> io::Result<Self> {
+            let file = Self::default_config_file_path(id);
+            Self::load_from_filepath(file)
+        }
+
+        fn load_from_filepath<P: AsRef<Path>>(filepath: P) -> io::Result<Self> {
+            log::trace!("Loading from file: {:#?}", filepath.as_ref().to_owned());
+            let config_contents = fs::read_to_string(filepath)?;
+
+            toml::from_str(&config_contents)
+                .map_err(|toml_err| io::Error::new(io::ErrorKind::Other, toml_err))
+        }
+    }
+}
@@ -1,203 +1,199 @@
 // Copyright 2020 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use handlebars::Handlebars;
-use nym_network_defaults::mainnet::read_var_if_not_default;
-use nym_network_defaults::var_names::CONFIGURED;
+use handlebars::{Handlebars, TemplateRenderError};
 use serde::de::DeserializeOwned;
 use serde::Serialize;
-use std::any::type_name;
-use std::fmt::Debug;
-#[cfg(unix)]
-use std::os::unix::fs::PermissionsExt;
-use std::path::PathBuf;
-use std::str::FromStr;
+use std::fs::File;
+use std::io::Write;
+use std::path::{Path, PathBuf};
 use std::{fs, io};

+pub use helpers::{parse_urls, OptionalSet};
+pub use toml::de::Error as TomlDeError;
+
 pub mod defaults;
+pub mod helpers;
+pub mod legacy_helpers;

-pub const CONFIG_DIR: &str = "config";
-pub const DATA_DIR: &str = "data";
-pub const CRED_DB_FILE_NAME: &str = "credentials_database.db";
+pub const NYM_DIR: &str = ".nym";
+pub const DEFAULT_CONFIG_DIR: &str = "config";
+pub const DEFAULT_DATA_DIR: &str = "data";
+pub const DEFAULT_CONFIG_FILENAME: &str = "config.toml";

-pub trait NymConfig: Default + Serialize + DeserializeOwned {
+#[cfg(feature = "dirs")]
+pub fn must_get_home() -> PathBuf {
+    dirs::home_dir().expect("Failed to evaluate $HOME value")
+}
+
+#[cfg(feature = "dirs")]
+pub fn may_get_home() -> Option<PathBuf> {
+    dirs::home_dir()
+}
+
+pub trait NymConfigTemplate: Serialize {
    fn template() -> &'static str;

-    fn config_file_name() -> String {
-        "config.toml".to_string()
+    fn format_to_string(&self) -> String {
+        // it is responsibility of whoever is implementing the trait to ensure the template is valid
+        Handlebars::new()
+            .render_template(Self::template(), &self)
+            .unwrap()
    }

-    fn default_root_directory() -> PathBuf;
-
-    // default, most probable, implementations; can be easily overridden where required
-    fn default_config_directory(id: &str) -> PathBuf {
-        Self::default_root_directory().join(id).join(CONFIG_DIR)
-    }
-
-    fn default_data_directory(id: &str) -> PathBuf {
-        Self::default_root_directory().join(id).join(DATA_DIR)
-    }
-
-    fn default_config_file_path(id: &str) -> PathBuf {
-        Self::default_config_directory(id).join(Self::config_file_name())
-    }
-
-    // We provide a second set of functions that tries to not panic.
-
-    fn try_default_root_directory() -> Option<PathBuf>;
-
-    fn try_default_config_directory(id: &str) -> Option<PathBuf> {
-        Self::try_default_root_directory().map(|d| d.join(id).join(CONFIG_DIR))
-    }
-
-    fn try_default_data_directory(id: &str) -> Option<PathBuf> {
-        Self::try_default_root_directory().map(|d| d.join(id).join(DATA_DIR))
-    }
-
-    fn try_default_config_file_path(id: &str) -> Option<PathBuf> {
-        Self::try_default_config_directory(id).map(|d| d.join(Self::config_file_name()))
-    }
-
-    fn root_directory(&self) -> PathBuf;
-    fn config_directory(&self) -> PathBuf;
-    fn data_directory(&self) -> PathBuf;
-
-    fn save_to_file(&self, custom_location: Option<PathBuf>) -> io::Result<()> {
-        let reg = Handlebars::new();
-        // it's whoever is implementing the trait responsibility to make sure you can execute your own template on your data
-        let templated_config = reg.render_template(Self::template(), self).unwrap();
-
-        // make sure the whole directory structure actually exists
-        match custom_location.clone() {
-            Some(loc) => {
-                if let Some(parent_dir) = loc.parent() {
-                    fs::create_dir_all(parent_dir)
-                } else {
-                    Ok(())
+    fn format_to_writer<W: Write>(&self, writer: W) -> io::Result<()> {
+        if let Err(err) =
+            Handlebars::new().render_template_to_write(Self::template(), &self, writer)
+        {
+            match err {
+                TemplateRenderError::IOError(err, _) => return Err(err),
+                other_err => {
+                    // it is responsibility of whoever is implementing the trait to ensure the template is valid
+                    panic!("invalid template: {other_err}")
                }
            }
-            None => fs::create_dir_all(self.config_directory()),
-        }?;
-
-        let location = custom_location
-            .unwrap_or_else(|| self.config_directory().join(Self::config_file_name()));
-        log::info!("Configuration file will be saved to {:?}", location);
-
-        cfg_if::cfg_if! {
-            if #[cfg(unix)] {
-                fs::write(location.clone(), templated_config)?;
-                let mut perms = fs::metadata(location.clone())?.permissions();
-                perms.set_mode(0o600);
-                fs::set_permissions(location, perms)?;
-            } else {
-                fs::write(location, templated_config)?;
-            }
        }

        Ok(())
    }
-
-    fn load_from_file(id: &str) -> io::Result<Self> {
-        let file = Self::default_config_file_path(id);
-        log::trace!("Loading from file: {:#?}", file);
-        let config_contents = fs::read_to_string(file)?;
-
-        toml::from_str(&config_contents)
-            .map_err(|toml_err| io::Error::new(io::ErrorKind::Other, toml_err))
-    }
 }

-// this function is only used for parsing values from the network defaults and thus the "expect" there are fine
-pub fn parse_urls(raw: &str) -> Vec<url::Url> {
-    raw.split(',')
-        .map(|raw_url| {
-            raw_url
-                .trim()
-                .parse()
-                .expect("one of the provided nym api urls is invalid")
-        })
-        .collect()
+pub fn save_formatted_config_to_file<C, P>(config: &C, path: P) -> io::Result<()>
+where
+    C: NymConfigTemplate,
+    P: AsRef<Path>,
+{
+    log::trace!("trying to save config file to {}", path.as_ref().display());
+    let file = File::create(path.as_ref())?;
+
+    // TODO: check for whether any of our configs stores anything sensitive
+    // and change that to 0o644 instead
+    #[cfg(target_family = "unix")]
+    {
+        use std::os::unix::fs::PermissionsExt;
+
+        let mut perms = fs::metadata(path.as_ref())?.permissions();
+        perms.set_mode(0o600);
+        fs::set_permissions(path, perms)?;
+    }
+
+    config.format_to_writer(file)
 }

-pub trait OptionalSet {
-    fn with_optional<F, T>(self, f: F, val: Option<T>) -> Self
-    where
-        F: Fn(Self, T) -> Self,
-        Self: Sized,
-    {
-        if let Some(val) = val {
-            f(self, val)
-        } else {
-            self
-        }
-    }
-
-    fn with_validated_optional<F, T, V, E>(
-        self,
-        f: F,
-        value: Option<T>,
-        validate: V,
-    ) -> Result<Self, E>
-    where
-        F: Fn(Self, T) -> Self,
-        V: Fn(&T) -> Result<(), E>,
-        Self: Sized,
-    {
-        if let Some(val) = value {
-            validate(&val)?;
-            Ok(f(self, val))
-        } else {
-            Ok(self)
-        }
-    }
-
-    fn with_optional_env<F, T>(self, f: F, val: Option<T>, env_var: &str) -> Self
-    where
-        F: Fn(Self, T) -> Self,
-        T: FromStr,
-        <T as FromStr>::Err: Debug,
-        Self: Sized,
-    {
-        if let Some(val) = val {
-            return f(self, val);
-        } else if std::env::var(CONFIGURED).is_ok() {
-            if let Some(raw) = read_var_if_not_default(env_var) {
-                return f(
-                    self,
-                    raw.parse().unwrap_or_else(|err| {
-                        panic!(
-                            "failed to parse value of {raw} into type {}. the error was {:?}",
-                            type_name::<T>(),
-                            err
-                        )
-                    }),
-                );
-            }
-        }
-        self
-    }
-
-    fn with_optional_custom_env<F, T, G>(
-        self,
-        f: F,
-        val: Option<T>,
-        env_var: &str,
-        parser: G,
-    ) -> Self
-    where
-        F: Fn(Self, T) -> Self,
-        G: Fn(&str) -> T,
-        Self: Sized,
-    {
-        if let Some(val) = val {
-            return f(self, val);
-        } else if std::env::var(CONFIGURED).is_ok() {
-            if let Some(raw) = read_var_if_not_default(env_var) {
-                return f(self, parser(&raw));
-            }
-        }
-        self
-    }
+pub fn deserialize_config_from_toml_str<C>(raw: &str) -> Result<C, TomlDeError>
+where
+    C: DeserializeOwned,
+{
+    toml::from_str(raw)
 }

-impl<T> OptionalSet for T where T: NymConfig {}
+pub fn read_config_from_toml_file<C, P>(path: P) -> io::Result<C>
+where
+    C: DeserializeOwned,
+    P: AsRef<Path>,
+{
+    log::trace!(
+        "trying to read config file from {}",
+        path.as_ref().display()
+    );
+    let content = fs::read_to_string(path)?;
+
+    // TODO: should we be preserving original error type instead?
+    deserialize_config_from_toml_str(&content)
+        .map_err(|toml_err| io::Error::new(io::ErrorKind::Other, toml_err))
+}
+
+//
+//
+//
+// pub trait NymConfig: Default + Serialize + DeserializeOwned {
+//     fn template() -> &'static str;
+//
+//     fn config_file_name() -> String {
+//         "config.toml".to_string()
+//     }
+//
+//     fn default_root_directory() -> PathBuf;
+//
+//     // default, most probable, implementations; can be easily overridden where required
+//     fn default_config_directory(id: &str) -> PathBuf {
+//         Self::default_root_directory()
+//             .join(id)
+//             .join(DEFAULT_CONFIG_DIR)
+//     }
+//
+//     fn default_data_directory(id: &str) -> PathBuf {
+//         Self::default_root_directory()
+//             .join(id)
+//             .join(DEFAULT_DATA_DIR)
+//     }
+//
+//     fn default_config_file_path(id: &str) -> PathBuf {
+//         Self::default_config_directory(id).join(Self::config_file_name())
+//     }
+//
+//     // We provide a second set of functions that tries to not panic.
+//
+//     fn try_default_root_directory() -> Option<PathBuf>;
+//
+//     fn try_default_config_directory(id: &str) -> Option<PathBuf> {
+//         Self::try_default_root_directory().map(|d| d.join(id).join(DEFAULT_CONFIG_DIR))
+//     }
+//
+//     fn try_default_data_directory(id: &str) -> Option<PathBuf> {
+//         Self::try_default_root_directory().map(|d| d.join(id).join(DEFAULT_DATA_DIR))
+//     }
+//
+//     fn try_default_config_file_path(id: &str) -> Option<PathBuf> {
+//         Self::try_default_config_directory(id).map(|d| d.join(Self::config_file_name()))
+//     }
+//
+//     fn root_directory(&self) -> PathBuf;
+//     fn config_directory(&self) -> PathBuf;
+//     fn data_directory(&self) -> PathBuf;
+//
+//     fn save_to_file(&self, custom_location: Option<PathBuf>) -> io::Result<()> {
+//         Ok(())
+//         // let reg = Handlebars::new();
+//         // // it's whoever is implementing the trait responsibility to make sure you can execute your own template on your data
+//         // let templated_config = reg.render_template(Self::template(), self).unwrap();
+//         //
+//         // // make sure the whole directory structure actually exists
+//         // match custom_location.clone() {
+//         //     Some(loc) => {
+//         //         if let Some(parent_dir) = loc.parent() {
+//         //             fs::create_dir_all(parent_dir)
+//         //         } else {
+//         //             Ok(())
+//         //         }
+//         //     }
+//         //     None => fs::create_dir_all(self.config_directory()),
+//         // }?;
+//         //
+//         // let location = custom_location
+//         //     .unwrap_or_else(|| self.config_directory().join(Self::config_file_name()));
+//         // log::info!("Configuration file will be saved to {:?}", location);
+//         //
+//         // cfg_if::cfg_if! {
+//         //     if #[cfg(unix)] {
+//         //         fs::write(location.clone(), templated_config)?;
+//         //         let mut perms = fs::metadata(location.clone())?.permissions();
+//         //         perms.set_mode(0o600);
+//         //         fs::set_permissions(location, perms)?;
+//         //     } else {
+//         //         fs::write(location, templated_config)?;
+//         //     }
+//         // }
+//         //
+//         // Ok(())
+//     }
+//
+//     fn load_from_file(id: &str) -> io::Result<Self> {
+//         let file = Self::default_config_file_path(id);
+//         log::trace!("Loading from file: {:#?}", file);
+//         let config_contents = fs::read_to_string(file)?;
+//
+//         toml::from_str(&config_contents)
+//             .map_err(|toml_err| io::Error::new(io::ErrorKind::Other, toml_err))
+//     }
+// }
@@ -8,7 +8,6 @@ edition = "2021"
 [dependencies]
 cw-utils = { workspace = true }
 cw3 = { workspace = true }
-cw3-fixed-multisig = { workspace = true, features = ["library"] }
 cw4 = { workspace= true }
 cosmwasm-std = { workspace = true }
 schemars = "0.8"
@@ -4,8 +4,11 @@
 */

 use crate::ephemeral_storage::EphemeralStorage;
+
 #[cfg(not(target_arch = "wasm32"))]
 use crate::persistent_storage::PersistentStorage;
+#[cfg(not(target_arch = "wasm32"))]
+use std::path::Path;

 mod backends;
 pub mod ephemeral_storage;
@@ -16,7 +19,7 @@ pub mod persistent_storage;
 pub mod storage;

 #[cfg(not(target_arch = "wasm32"))]
-pub async fn initialise_persistent_storage(path: std::path::PathBuf) -> PersistentStorage {
+pub async fn initialise_persistent_storage<P: AsRef<Path>>(path: P) -> PersistentStorage {
    match persistent_storage::PersistentStorage::init(path).await {
        Err(err) => panic!("failed to initialise credential storage - {err}"),
        Ok(storage) => storage,
@@ -23,7 +23,7 @@ impl PersistentStorage {
    /// # Arguments
    ///
    /// * `database_path`: path to the database.
-    pub async fn init<P: AsRef<Path> + Send>(database_path: P) -> Result<Self, StorageError> {
+    pub async fn init<P: AsRef<Path>>(database_path: P) -> Result<Self, StorageError> {
        debug!(
            "Attempting to connect to database {:?}",
            database_path.as_ref().as_os_str()
@@ -19,20 +19,20 @@ macro_rules! measure {
        cfg_if::cfg_if! {
            if #[cfg(feature = "cpucycles")] {
                let start_cycles = $crate::cpu_cycles();
-        // if the block needs to return something, we can return it
-        let r = $x;
-        let end_cycles = $crate::cpu_cycles();
-        let name = if let Some(meta) = tracing::Span::current().metadata() {
-            meta.name()
-        } else {
-            "measure"
-        };
-        match (start_cycles, end_cycles) {
-            (Ok(start), Ok(end)) => info!("{} cpucycles: {}", name, end - start),
-            (Err(e), _) => error!("{e}"),
-            (_, Err(e)) => error!("{e}"),
-        }
-        r
+                // if the block needs to return something, we can return it
+                let r = $x;
+                let end_cycles = $crate::cpu_cycles();
+                let name = if let Some(meta) = tracing::Span::current().metadata() {
+                    meta.name()
+                } else {
+                    "measure"
+                };
+                match (start_cycles, end_cycles) {
+                    (Ok(start), Ok(end)) => log::trace!("{} cpucycles: {}", name, end - start),
+                    (Err(e), _) => error!("{e}"),
+                    (_, Err(e)) => error!("{e}"),
+                }
+                r
            } else {
                $x
            }
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
pierre	81e133b789	feat(nc-android): sentry integration and topbar navigation	2023-06-22 14:21:24 +02:00
pierre	3cdca0ad8d	copy change	2023-06-16 11:20:20 +02:00
pierre	4c13d91bfb	fix(nyms5-android): add check for worker and proxy states desync	2023-06-16 10:08:57 +02:00
Pierre Dommerc	8355e6ce5e	feat(nc-desktop): add error reporting and monitoring setting (#3553 )	2023-06-15 19:23:23 +02:00
Jędrzej Stuczyński	bbb1e5e15a	Feature/node tester disconnect (#3552 ) * Ability to disconnect and reconnect GatewayClient * usage of ibid. inside NodeTester * example * wasm-compatible `wait_for_shutdown` (for the future)	2023-06-13 17:25:42 +01:00
Drazen Urch	6d30e7ea8e	Adjustments to cover traffic and ack handling (#3548 )	2023-06-13 13:07:02 +02:00
farbanas	9288f71c5f	Merge branch 'master' into develop	2023-06-13 11:16:17 +02:00
farbanas	79f5983c76	updating lock files	2023-06-13 11:04:36 +02:00
farbanas	335453b63c	update versions and changelog for release v1.1.21	2023-06-13 10:54:01 +02:00
Jędrzej Stuczyński	4292a55614	explicitly setting up fresh gateway in native socks5 (#3547 )	2023-06-12 17:01:05 +01:00
mx	f97f0475e9	Merge pull request #3545 from nymtech/feature/docs-1-1-21 version bump for variables	2023-06-12 12:04:16 +00:00
mx	67a945a15f	version bump for variables	2023-06-12 13:45:49 +02:00
Tommy Verrall	d1a28826d5	Merge pull request #3535 from nymtech/feature/socks5-message-ordering Feature/socks5 message ordering	2023-06-12 11:47:35 +01:00
Tommy Verrall	8f026ab6c6	Update build-and-upload-binaries-ci.yml temp use rust version 1.69.0 for ci build uploads, will need to switch and use: cosmwasm/rust-optimizer in the near future	2023-06-12 11:07:22 +01:00
Jędrzej Stuczyński	bdcdcf7f8b	clippy	2023-06-12 10:20:13 +01:00
Jędrzej Stuczyński	182e147a86	fixed and updated related units tests	2023-06-12 10:20:13 +01:00
Jędrzej Stuczyński	687b437ea0	cargo fmt	2023-06-12 10:20:13 +01:00
Jędrzej Stuczyński	f2c5dbb696	deadcode	2023-06-12 10:20:13 +01:00
Jędrzej Stuczyński	a8bf690c17	tests	2023-06-12 10:20:13 +01:00
Jędrzej Stuczyński	1328ba35be	removed original Ordered sender	2023-06-12 10:20:13 +01:00
Jędrzej Stuczyński	8b046d4139	split up functions a bit more	2023-06-12 10:20:13 +01:00
Jędrzej Stuczyński	f4cd372808	simplified keeping track of message sequence	2023-06-12 10:20:13 +01:00
Jędrzej Stuczyński	7228331db6	removed OrderedMessage	2023-06-12 10:20:13 +01:00
Jędrzej Stuczyński	45f3f3ec01	cleanup	2023-06-12 10:20:13 +01:00
Jędrzej Stuczyński	5f9e54c83c	buggy, but backwards compatible, explicit sequencing	2023-06-12 10:20:13 +01:00
Jędrzej Stuczyński	f8c2f90502	initial work on putting data sequence explicitly inside socks5 request	2023-06-12 10:20:13 +01:00
Jon Häggblad	96e8bdfea4	Reduce number of surbs in nym-nr-query ping (#3540 )	2023-06-12 09:53:47 +02:00
Jon Häggblad	0fa1961a04	nym-nr-query CLI tool for query network-requester (#3538 ) * Initial version * Add open_proxy request * Start adding cli commands * use commands * Common response type * json output * Tidy * Remove the All case * Remove empty file * Remove todo * Add ping command * Ping 4 times by default * Logic for controlling number of loops * Some print tweaks	2023-06-12 09:30:02 +02:00
pierre	88002969b7	ci(nyms5-android): add debug apk build	2023-06-09 22:46:04 +02:00
pierre	b90dedf3ae	build(android): fix repro build wip	2023-06-09 17:11:15 +02:00
pierre	582cb32223	build(android): fix repro build wip	2023-06-09 16:34:50 +02:00
Jędrzej Stuczyński	42a43a3709	Feature/extract gateway config (#3517 ) * wip client core * hashing shared key in persisted details * native client using on-disk gateway details * ibid for socks5 * ibid for NR * nym sdk * non-wasm fixes * wasm * missed cargo fmt * fixed nym-connect build * changed serialization of the key hash to be more human readable * allowing some dead code * fixed gateway details deserializtion * removed needless borrow in wasm client * removed deadcode * exhaustive match on GatewaySetup after having loaded the keys	2023-06-09 15:12:29 +01:00
Jędrzej Stuczyński	c5ad4006ae	simplified construction of 'BaseClient' (#3513 )	2023-06-09 15:11:45 +01:00
Tommy Verrall	71fb6a1ba1	Merge pull request #3516 from nymtech/feature/explorer-sp-extra-detail Explorer - Extra detail for Service Providers	2023-06-09 10:01:59 +01:00
Jon Häggblad	68a37bc692	Merge remote-tracking branch 'origin/release/v1.1.21' into develop	2023-06-09 09:54:53 +02:00
Jon Häggblad	542fd92a46	Allow query network-requestor for open_proxy (#3531 ) * wip: playing around * WIP * wip * Add query request * Create new example * Restore control_requests example * Remove ControlRequest::OpenProxy * Remove Socks5RequestContent::OpenProxy * Remove bunch of debug logging * Remove more old leftovers * Another few lines of leftovers to remove * Disable logging in example * Return error if incoming request if future version * Serialization unit tests * Network requester in example * Cargo.lock	2023-06-09 09:54:21 +02:00
pierre	527c71d3df	fix(nyms5-android): clean code	2023-06-08 18:45:02 +02:00
pierre	7ee47bdb4c	fix(nyms5-android): fix notif channel creation on android prior to 12	2023-06-08 18:44:18 +02:00
pierre	9fa36b6393	add a log on channel creation	2023-06-08 11:06:14 +02:00
pierre	2b40b96aa1	wip	2023-06-08 11:06:14 +02:00
Jędrzej Stuczyński	9a68702d4d	Feature/config refactor (#3498 ) * revamping mixnode connfig * wip * native client config revamping * wip * building socks5 * using const for mixnnode config template * compiling updated gateway * nym-api * nym-sdk * everything compiling once more but definitely not compatible with CI and older versions (yet) * creating full directory structure on init * renamed paths to storage_paths and fixed mixnode template * mixnode config migration * gateway config migration * nym-api config migration * native client config migration * socks5 client config migration * NR config migration * removed deprecations (that will be resolved in the following PRs) + fixed clippy * nym-connect clippy * nym-connect config updates * outfox fixes * defined socks5 lib config * clippy * fixed wasm client build * removed explicit packet_type argument when starting base client it's known implicitly from the previously passed config struct * Empty commit * fixed re-using gateway information when client configs are re-initialised * fixed borrowing id value in nym-connect * post-rebase fixes * updated 'old_config' versions --------- Co-authored-by: Tommy Verrall <tommy@nymtech.net>	2023-06-07 17:06:35 +01:00
Drazen Urch	bc5198768e	Push traces to jaeger (#3522 ) * Push traces to jaeger * Remove default feature * Update toolchain	2023-06-07 17:32:26 +02:00
Jon Häggblad	892653cd96	Remove gateway from detailed service provider type	2023-06-07 14:09:13 +02:00
Jon Häggblad	a7471ef324	Replace fold with collect	2023-06-07 14:06:12 +02:00
fmtabbara	403141c1f5	add tooltip to sp routing score	2023-06-07 12:22:59 +01:00
fmtabbara	d8c82bf6d0	use default sort order	2023-06-07 12:05:32 +01:00
fmtabbara	dd86ba36dd	use default success ping time - 120 mins	2023-06-07 11:56:44 +01:00
Tommy Verrall	42acbfe806	Update build-and-upload-binaries-ci.yml temp use rust version 1.69.0 for ci build uploads, will need to switch and use: cosmwasm/rust-optimizer in the near future	2023-06-07 11:24:53 +02:00
farbanas	7c55483585	Merge branch 'master' into develop	2023-06-07 10:43:11 +02:00
fmtabbara	0320220219	refactor	2023-06-06 22:56:13 +01:00
fmtabbara	e32ee2ccf3	add service-type and routing-scores to sps + allow sorting on routing scores	2023-06-06 22:45:09 +01:00
fmtabbara	b8ca1762c2	allow sp routing score to be undefined	2023-06-06 22:45:07 +01:00
pierre	d1e9fcf03a	make routing score optional	2023-06-06 16:44:17 +02:00
pierre	303a774378	add some logs	2023-06-06 15:25:29 +02:00
pierre	c9ca71f47b	wip	2023-06-06 14:50:25 +02:00
pierre	92faf1e3d5	wip	2023-06-06 14:22:52 +02:00
fmtabbara	e509989ac3	wip	2023-06-06 10:04:50 +01:00
Jędrzej Stuczyński	d4ce1635a8	Fixed incorrect assertion when sending replies (#3515 )	2023-06-05 14:36:44 +01:00
Jędrzej Stuczyński	2bc564ad01	updating managed keys after gateway registration (#3514 )	2023-06-05 14:09:28 +01:00
Tommy Verrall	5910bcbc02	Update build-and-upload-binaries-ci.yml add the service provider and name service contract to build output	2023-06-05 14:49:49 +02:00
Pierre Dommerc	1aa11887aa	fix(wallet): fix bonding data refresh (#3499 )	2023-06-05 11:05:25 +02:00
Jon Häggblad	2977b8f25f	Fix clippy for 1.70 (#3505 )	2023-06-05 08:54:18 +01:00
pierre	9ae4fd04ac	ci(ns5-android): fix workflow	2023-06-02 15:44:39 +02:00
pierre	4470969bec	ci(ns5-android): update workflow to create GH release	2023-06-02 14:49:14 +02:00
pierre	1a4c3a7709	chore(ns5-android): add app metadata for listing	2023-06-02 14:19:17 +02:00
Pierre Dommerc	99b31920d5	fix(ns5-android): make lib calling callbacks (#3496 )	2023-06-02 13:59:10 +02:00
pierre	62ccb6b4cd	build(ns5-android): add product flavors config	2023-06-01 19:20:32 +02:00
pierre	365e0134b4	build(nc-native-android): clean build script	2023-05-31 17:31:24 +02:00
pierre	8432c30f6c	build(nc-native-android): add gradle build universal apk	2023-05-31 14:20:49 +02:00
pierre	c2764f90b3	ci(nc-native-android): update github workflow to build unsigned apks	2023-05-31 13:14:44 +02:00
pierre	a6a39d1234	chore(nc-native-android): remove outdated todo	2023-05-30 13:58:30 +02:00
pierre	5f35d54fcb	build(nc-native-android): fix script build paths	2023-05-30 13:40:52 +02:00
Jędrzej Stuczyński	096a599673	Socks5lib - FFI endpoint for getting 'ClientState' (#3464 ) * method for getting current socks5 connection state * prevent shutting down disconnected client (and starting connected client) * fixed ios build * setup additional logging	2023-05-30 10:38:44 +01:00
dependabot[bot]	41da67ad6f	Bump yaml from 2.1.1 to 2.2.2 in /nym-api/tests (#3352 ) Bumps [yaml](https://github.com/eemeli/yaml) from 2.1.1 to 2.2.2. - [Release notes](https://github.com/eemeli/yaml/releases) - [Commits](https://github.com/eemeli/yaml/compare/v2.1.1...v2.2.2) --- updated-dependencies: - dependency-name: yaml dependency-type: direct:production ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2023-05-29 12:08:31 +01:00
Jędrzej Stuczyński	273a741cdf	Fix typo in wasm-client x25519 keypair storage key (#3463 )	2023-05-29 11:05:05 +01:00
Drazen Urch	b5c8b69547	Outfox integration (#3331 ) * Experiment with serde * Framed encoding serde POC * Outfox framing * Outfox rest compat (#3333) * Outfox forwarding compat * Tidy up interface * PacketSize compat * Address PR comments * Rebase on develop commit `342883fcbe` Author: durch <durch@users.noreply.github.com> Date: Thu Apr 27 09:17:18 2023 +0200 Put back PacketType 1 commit `61a0ee5a19` Author: Tommy Verrall <tommyvez@protonmail.com> Date: Wed Apr 26 16:37:29 2023 +0100 change output for cpu-cycle management logs commit `3956109c7e` Author: Tommy Verrall <tommy@nymtech.net> Date: Wed Apr 26 12:13:22 2023 +0100 change the workflow file to build with cpucycles commit `8d725b13c5` Author: durch <durch@users.noreply.github.com> Date: Mon Apr 24 13:14:58 2023 +0200 Outfox client compat commit `4d166c389b` Author: durch <durch@users.noreply.github.com> Date: Fri Apr 21 00:30:46 2023 +0200 Address PR comments commit `145c3c1223` Author: durch <durch@users.noreply.github.com> Date: Fri Apr 21 00:12:35 2023 +0200 Rename PacketMode commit `cbd654d6fd` Author: Drazen Urch <drazen@urch.eu> Date: Thu Apr 20 23:59:40 2023 +0200 Outfox rest compat (#3333) * Outfox forwarding compat * Tidy up interface * PacketSize compat commit `e7be91a94c` Author: durch <durch@users.noreply.github.com> Date: Wed Apr 19 16:36:48 2023 +0200 Remove serde cruft commit `582e7d566a` Author: durch <durch@users.noreply.github.com> Date: Wed Apr 19 16:24:09 2023 +0200 Outfox framing commit `6464da5f01` Author: durch <durch@users.noreply.github.com> Date: Tue Apr 18 22:23:02 2023 +0200 Framing compat commit `d5e77e499b` Author: durch <durch@users.noreply.github.com> Date: Tue Apr 18 18:18:54 2023 +0200 Framed encoding serde POC commit `f086f9c35a` Author: durch <durch@users.noreply.github.com> Date: Tue Apr 18 16:54:21 2023 +0200 Experiment with serde * Client tweaks * Speed up from_plaintext * SurbAcks * More work on the reciever end, and outfox format * Cleanup and fmt * Wrap up rebase * Happy clippy * Fix lock files * Final cleanup	2023-05-29 10:05:11 +02:00
pierre	5bd87bdaa8	feat(nc-native-android): add notification tap action on notification tap, bring app to foreground use a shield icon for the top bar app icon clean code add notes on a pending bug	2023-05-27 00:00:24 +02:00
omahs	7d64618701	Fix: typos (#3143 ) * Fix: typos * Fix: typos * Fix: typo	2023-05-26 14:46:08 +01:00
Jon Häggblad	4151c65251	Add nym-socks5-listener to main workspace (#3455 ) * Add nym-socks5-listener to main workspace * add socks5-listener to CI build path trigger * Using repr(u8) instead of repr(C) for ClientState enum --------- Co-authored-by: Jędrzej Stuczyński <jedrzej.stuczynski@gmail.com>	2023-05-26 11:01:17 +02:00
Fouad	ccb48f92cd	fix sp drop down list (#3454 )	2023-05-26 09:16:28 +01:00
pierre	8fce478a1f	doc(nc-native-android): add readme	2023-05-26 00:34:40 +02:00
pierre	4f712ad4ba	fix(android-native): crash on android 11	2023-05-25 23:14:11 +02:00
pierre	562fd44a30	fix(android-native): crash on android 11	2023-05-25 23:00:36 +02:00
pierre	603e897e2d	build(android-native): add split abi config refactor android build script	2023-05-25 18:03:36 +02:00
Pierre Dommerc	6c122aad10	add nym ic launcher (#3456 )	2023-05-25 18:00:22 +02:00
Jon Häggblad	b4ac601a82	Merge remote-tracking branch 'origin/release/v1.1.20' into develop	2023-05-25 15:58:14 +02:00
Jon Häggblad	ce380a6b0d	Native nym-connect clients for iOS and Android (initial version) (#3452 ) * initial crate * foomp * Make it work for x86_64-linux-android * remove unused stuff * Add header * another layer of hacks * additional target os locking * cleanup * bootstrap android app * android jni function * instructions + xcode project * update jni name * add native socks5 class * typo * gitkeep android native lib path * add native socks5 class * add socks5 native lib in java * add build script * fix jni dependency declaration * wip * Update build.sh * Move build.sh to new subdir * rename to build-android.sh * fix typo in FFI function name * use a good SP * wip not crashing state * add android network permissions * android_logging * starting client on button in swift + safer ffi * set tag for libnyms5 logs * testing callbacks * android: start socks5 process in a separated thread * non-blocking client with callbacks * Remove the old non-working logger * Restore commented out functionality in socks5 client * basic file write/load + possible android fix * Fully working state (minus task manager) * Remove unused function * data persistence + cb with address * Remove stray old MyClass file from the merge * Make storage_dir and Option * Fix char_p for android * Android now works with the new branch * Tidy up a little in the jni code * Move android mod to seperate file * jni wrap start/stop * Add android build to Makefile * android: add basic UI and start/stop actions * typo * add nym word * dirty persistence restored * dirty android fixes * even dirtier workaround * Move rust crate to sdk/lib * Update cargo.toml * Strip release binary * Update lib name in android project * Move ios project to nym-connect directory * remove old gitignore file * Move ios client one step deeper * fixed xcode lib paths * removed old tracked file * move android app under new path * a bit of cleanup * hopefully fixing the CI issues (🤞) * Update Makefile * android: add better support for persistent state * updating ios UI on ffi callbacks * missing dead code * Added toggle button (wip) * swapped connect and disconnect methods around * icon * fixed android build * reset button + reuse service provider * disabling reset button * android: run proxy in a worker as foreground service * todo user cancel action * android build script: add aarch64 * add stop action from notification * add simple callbacks to the socks5 bridge * pick a sp randomly * pass stop cb to lib call * add loading state support * refactor(android): base connection state on callback calls * android: add optimistic ui * android: unique instance of libnym * removing deadcode --------- Co-authored-by: Jędrzej Stuczyński <jedrzej.stuczynski@gmail.com> Co-authored-by: pierre <dommerc.pierre@gmail.com> Co-authored-by: Mark Sinclair <mmsinclair@users.noreply.github.com>	2023-05-25 15:45:40 +02:00
Jędrzej Stuczyński	525372d7ac	Tmp hack/wasm client persist gateway cfg (#3443 ) * wip * semi-hacky way of persisting wasm-client gateway config a better way shall be introduced after config refactoring * cargo fmt * wasm client clippy * removed artifacts from other branches	2023-05-25 09:02:27 +01:00
Jon Häggblad	e473a05250	Tweak fern logging format to be more similar to pretty_env_logger (#3451 )	2023-05-25 09:29:59 +02:00
Simon Wicky	a55d604bf5	increase connection buffer size to 2000 (#3439 )	2023-05-23 16:08:55 +02:00
Jon Häggblad	5075894ff5	socks5: abort sending data if the connection is closed (#3365 ) * socks5 inbound: stop reading when closing connection * Wait for lane at select top-level * Allow closing connection while waiting for lanes to clear * Some tidy in inbound.rs * Put chained future back inline in the select * Remove commented out line * Disable the read data branch on is_finished	2023-05-23 15:01:13 +02:00
fmtabbara	c392266a4c	Explorer: Fix - Load service provider data before trying to display	2023-05-17 12:44:24 +01:00
Tommy Verrall	9b540936db	Merge pull request #3429 from nymtech/feature/explorer-show-all-gateway-versions Add 'show all versions' options to gateways list	2023-05-17 10:50:06 +01:00
Tommy Verrall	7bf1036b68	Merge pull request #3430 from nymtech/service-providers-fix small typo correction and service providers fix	2023-05-17 10:48:20 +01:00
Gala	1d82ec56d8	change where the change is applied	2023-05-17 11:41:45 +02:00
Gala	3ae5b59141	small typo correction and service providers fix	2023-05-17 11:27:49 +02:00
fmtabbara	929b401f95	default to 'all version'	2023-05-17 10:13:14 +01:00
fmtabbara	d158deba77	add 'show all versions' options to gateways list	2023-05-17 10:07:25 +01:00
Tommy Verrall	74bedead20	Merge pull request #3418 from nymtech/jstuczyn-patch-1 Fix feature-locking for fs surb storage	2023-05-16 12:56:32 +01:00
Jędrzej Stuczyński	30137e285d	Fix feature-locking for fs surb storage	2023-05-16 11:29:08 +01:00