Various fixes

KKT + PSQ (#6203 )
* Add nymkkt with KKT convenience wrappers for nym-lp integration Integrates nymkkt module from georgio/noise-psq branch to enable post-quantum key distribution for nym-lp. Changes: - Add common/nymkkt from georgio/noise-psq (KKT protocol implementation) - Add convenience wrapper layer (kkt.rs) with simplified API: - request_kem_key() - Client requests gateway's KEM key - validate_kem_response() - Client validates signed response - handle_kem_request() - Gateway handles requests - Add nymkkt to workspace members in root Cargo.toml - Export kkt module in lib.rs The KKT (Key Encapsulation Mechanism Transport) protocol enables efficient distribution of post-quantum KEM public keys. Instead of storing large PQ keys in the directory (1KB-500KB), we store 32-byte hashes and fetch actual keys on-demand via this authenticated protocol. Tests: All 5 unit tests passing (authenticated, anonymous, signature verification, hash validation) * feat(lp): add Ed25519 authentication to PSQ protocol Replace basic PSQ v0 API with authenticated v1 API that includes cryptographic authentication via Ed25519 signatures. Changes: - PSQ initiator now signs encapsulated keys with Ed25519 private key - PSQ responder verifies Ed25519 signatures before deriving PSK - Prevents MITM attacks through mutual authentication - Fixed test helpers to use role-based Ed25519 keypair assignment (initiator uses [1u8;32], responder uses [2u8;32]) Security: This adds a critical authentication layer to the post-quantum PSK derivation protocol, ensuring both parties can verify each other's identity during the handshake. Tests: All 77 tests passing (was 11 failures, now 0) * feat(lp): integrate PSQ post-quantum PSK derivation Complete integration of Post-Quantum Secure (PSQ) protocol for PSK derivation in the Lewes Protocol, replacing simple Blake3 derivation with cryptographically secure DHKEM-based PSK establishment. This commit encompasses three completed tasks: - Add KKTRequest/KKTResponse message types to LpMessage enum - Update codec to handle KKT message serialization/deserialization - Add kkt_orchestrator.rs with high-level KKT API wrappers - Enable key exchange orchestration for PSQ protocol - Add set_psk() method to NoiseProtocol for dynamic PSK injection - Integrate PSQ derivation into LpSession handshake flow - PSQ payload embedded in first Noise message (ClientHello) - Derive PSK using libcrux-psq before Noise handshake completion - Add helper functions for X25519 to KEM conversions - Add comprehensive PSQ integration tests in session_integration/ - Test PSQ handshake end-to-end flow - Validate PSK derivation correctness between initiator/responder - Test PSQ + Noise combined protocol operation Dependencies: - libcrux-psq: Post-quantum PSK protocol implementation - libcrux-kem: Key Encapsulation Mechanism primitives - nym-kkt: KKT key exchange protocol wrappers - rand 0.9: Required for KKT compatibility Security: This adds Harvest-Now-Decrypt-Later (HNDL) resistance by combining classical ECDH with post-quantum KEM for PSK derivation. Even if X25519 is broken by quantum computers, the PSK remains secure. Tests: All 77 tests passing * feat(lp): add PSQ error handling documentation and tests (nym-bbi) Formalize the "always abort" error handling strategy for PSQ failures. PSQ errors indicate attacks, misconfigurations, or protocol violations that should not be silently ignored or worked around. Changes: - Add comprehensive error handling documentation to psk.rs module - Add diagnostic logging with error categorization: * CredError → warn about potential attack * TimestampElapsed → warn about potential replay * Other errors → log as errors - Add 4 error scenario tests: * test_psq_deserialization_failure * test_handshake_abort_on_psq_failure * test_psq_invalid_signature * test_psq_state_unchanged_on_error - Add log dependency to Cargo.toml Error handling strategy: All PSQ failures abort the handshake cleanly with no retry or fallback. This prevents silent security degradation and ensures misconfigurations are detected early. State guarantees: PSQ errors leave session in clean state - dummy PSK remains, Noise HandshakeState unchanged, no partial data, no cleanup needed. Tests: 81 tests passing (77 original + 4 new error tests) Closes: nym-bbi * feat(lp): add PSK injection tracking to prevent dummy PSK usage (nym-ep2) Add safety mechanism to ensure real post-quantum PSK was injected before allowing transport mode operations (encrypt/decrypt). This prevents accidentally using the insecure dummy PSK [0u8; 32] if PSQ injection fails. Changes: - Add `psk_injected: AtomicBool` field to LpSession - Initialize to `false` in LpSession::new() - Set to `true` after successful PSK injection: * Initiator: In prepare_handshake_message() after set_psk() * Responder: In process_handshake_message() after set_psk() - Add NoiseError::PskNotInjected error variant - Add PSK injection checks in encrypt_data() and decrypt_data() * Check happens before handshake completion check * Returns PskNotInjected if flag is false - Add comprehensive PSK injection lifecycle documentation to LpSession - Add test_transport_fails_without_psk_injection test - Update test_encrypt_decrypt_before_handshake to expect PskNotInjected PSK Injection Lifecycle: 1. Session created with dummy PSK [0u8; 32] in Noise HandshakeState 2. During handshake, PSQ runs and derives real post-quantum PSK 3. Real PSK injected via set_psk() - psk_injected flag set to true 4. Handshake completes, transport mode available 5. Transport operations check psk_injected flag for safety This is defensive programming - normal PSQ flow always injects the real PSK. The safety check prevents transport mode if PSQ somehow fails silently or is bypassed due to implementation bugs. Tests: 82 tests passing (81 original + 1 new) Closes: nym-ep2 * docs(lp): fix PSK state documentation inaccuracy Correct error handling documentation to clarify that PSK slot 3 remains unmodified only on error, not in all cases. Previous: "PSK slot 3 = dummy [0u8; 32] (never modified)" Corrected: "PSK slot 3 = dummy [0u8; 32] (not modified on error)" This is more accurate since: - On error: PSK remains as dummy value (never injected) - On success: PSK is replaced with real post-quantum PSK Documentation-only change, no functional impact. * feat(lp): add KKTExchange state to state machine for pre-handshake KEM key transfer (nym-4za) Add KKTExchange state to LpStateMachine to properly orchestrate KKT (KEM Key Transfer) protocol before Noise handshake begins. This enables dynamic KEM public key exchange, allowing post-quantum KEM algorithms to be used without pre-published keys. Changes: - Add KKTExchange state and KKTComplete action to state machine - Implement automatic KKT exchange on StartHandshake: * Initiator: sends KKT request → waits for response → validates signature * Responder: waits for request → validates → sends signed KEM key - Update process_kkt_response() to accept Option<&[u8]> for hash validation: * Some(hash): full KKT validation with directory hash (future) * None: signature-only mode (current deployment) - Add local_x25519_public() helper for responder KEM key derivation - Update state flow: ReadyToHandshake → KKTExchange → Handshaking → Transport - Add PSK handle storage (psk_handle) for future re-registration - Export generate_fresh_salt() for session creation - Update psq_responder_process_message() to return encrypted PSK handle (ctxt_B) - Add comprehensive tests: * test_kkt_exchange_initiator_flow * test_kkt_exchange_responder_flow * test_kkt_exchange_full_roundtrip * test_kkt_exchange_close * test_kkt_exchange_rejects_invalid_inputs * Updated test_state_machine_simplified_flow for KKT phase All tests passing. Ready for nym-8y5 (PSQ handshake KKT integration). * docs(lp): add state machine and post-quantum security protocol documentation Add comprehensive documentation of the Lewes Protocol state machine and post-quantum security architecture to LP_PROTOCOL.md. New sections: - State Machine and Security Protocol overview - Detailed state transition diagram (ReadyToHandshake → KKTExchange → Handshaking → Transport) - Complete message sequence diagram showing KKT + PSQ + Noise flow - KKT (KEM Key Transfer) protocol specification - PSQ (Post-Quantum Secure PSK) protocol details - Security guarantees and implementation status - Algorithm choices (current X25519, future ML-KEM-768) - Message type specifications for KKT - Version 1.1 changelog entry documenting KKT/PSQ integration Documentation includes: - ASCII art state machine diagram - Message sequence diagram with all protocol phases - PSK derivation formulas - Security properties checklist - Migration path to post-quantum KEMs - Integration details (PSQ embedded in Noise, no extra round-trips) Related to nym-4za (KKTExchange state implementation). * feat(lp): use KKT-authenticated KEM key in PSQ handshake (nym-8y5) Replace direct X25519→KEM conversion with KKT-derived authenticated key in PSQ initiator flow. This ensures PSQ uses the responder's authenticated KEM public key obtained via KKT protocol instead of blindly converting their X25519 key, properly completing the post-quantum security chain. Changes: - session.rs: Extract KEM key from KKTState::Completed in prepare_handshake_message() - session.rs: Add set_kkt_completed_for_test() helper for test initialization - session.rs: Update create_handshake_test_session() to initialize KKT state - session.rs: Fix test_handshake_abort_on_psq_failure and test_psq_invalid_signature - session_manager.rs: Add init_kkt_for_test() for integration test setup - session_integration/mod.rs: Update tests for KKT-first flow (6 rounds total) - session_integration/mod.rs: Fix state machine test expectations for KKTExchange state All 87 tests passing. Unblocks nym-w8f (KKT tests) and nym-m15 (production integration). * feat(lp): simplify API to Ed25519-only, derive X25519 internally Refactored LP state machine to use Ed25519 keys exclusively in the public API, with X25519 keys derived internally via RFC 7748. This simplifies the API from 6 parameters to 4 while maintaining protocol security. **Core API Changes:** - LpStateMachine::new(): Removed explicit X25519 keypair parameters - Old: new(is_initiator, local_keypair, local_ed25519_keypair, remote_public_key, remote_ed25519_key, salt) - New: new(is_initiator, local_ed25519_keypair, remote_ed25519_key, salt) - X25519 keys now derived internally from Ed25519 using RFC 7748 - lp_id calculation moved inside state machine (uses derived X25519 keys) **Protocol Changes:** - ClientHello message extended from 65 to 97 bytes - Now includes client_ed25519_public_key field (32 bytes) - Required for PSQ authentication in KKT + PSQ handshake flow - Breaking change: gateway must extract Ed25519 from ClientHello **Gateway Updates:** - receive_client_hello() now extracts Ed25519 public key - LpGatewayHandshake::new_responder() accepts Ed25519 keys only - Removed manual X25519 conversion (handled by state machine) **Registration Client Updates:** - LpRegistrationClient now uses Ed25519 keypairs - Generate fresh ephemeral Ed25519 keys for LP registration - ClientHello includes Ed25519 public key for gateway authentication - Fixed 7 pre-existing build errors: * mixnet_client_startup_timeout field removal * IprClientConnect API change (async → sync) * Error variant renames (use helper function) * LP client key type mismatches (X25519 → Ed25519) **Test Suite:** - Updated 16+ test functions to use new 4-parameter constructor - Fixed 5 integration test failures caused by lp_id mismatch - Tests now derive X25519 from Ed25519 (matching production behavior) - Added missing PublicKey imports in test modules - All 87 tests passing (100% success rate) **Implementation Details:** - Added Ed25519RecoveryError variant to LpError enum - Type conversion: nym_crypto X25519 → nym_lp keypair types - Maintained backward compatibility for PSQ/KKT protocol flow - Session manager updated to use new API signature This change completes the Ed25519-only API migration, hiding X25519 as an implementation detail while preserving all security properties of the KKT-authenticated PSQ handshake protocol. * chore: run cargo fmt * chore: run cargo clippy --fix to resolve simple linter issues * Basic handshake working * Final tweaks * Wrap PR comments, 2024 --------- Co-authored-by: Jędrzej Stuczyński <jedrzej.stuczynski@gmail.com>
2025-11-24 12:13:17 +01:00 · 2025-11-21 18:37:38 +01:00 · 2025-11-21 18:25:47 +01:00 · 2025-11-21 18:25:47 +01:00 · 2025-11-21 18:25:47 +01:00 · 2025-11-21 18:18:30 +01:00
1653 changed files with 113915 additions and 37790 deletions
@@ -21,7 +21,7 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        platform: [ arc-ubuntu-22.04 ]
+        platform: [ arc-linux-latest ]

    runs-on: ${{ matrix.platform }}
    env:
@@ -38,15 +38,14 @@ jobs:
          rm -rf ci-builds || true
          mkdir -p $OUTPUT_DIR
          echo $OUTPUT_DIR
-
      - name: Install Dependencies (Linux)
        run: sudo apt-get update && sudo apt-get -y install libudev-dev

      - name: Sets env vars for tokio if set in manual dispatch inputs
-        run: |
-          echo 'RUSTFLAGS="--cfg tokio_unstable"' >> $GITHUB_ENV
        if: github.event_name == 'workflow_dispatch' && inputs.add_tokio_unstable == true
-
+        run: |
+          echo "RUSTFLAGS=--cfg tokio_unstable" >> $GITHUB_ENV
+          echo "CARGO_FEATURES=--features tokio-console" >> $GITHUB_ENV
      - name: Install Rust stable
        uses: actions-rs/toolchain@v1
        with:
@@ -103,7 +102,6 @@ jobs:
          if [ ${{ github.event_name == 'workflow_dispatch' && inputs.enable_deb == true }} = true ]; then
            cp target/debian/*.deb $OUTPUT_DIR
          fi
-
      - name: Deploy branch to CI www
        continue-on-error: true
        uses: easingthemes/ssh-deploy@main
@@ -9,7 +9,7 @@ on:

 jobs:
  wasm:
-    runs-on: arc-ubuntu-22.04
+    runs-on: arc-linux-latest
    env:
      CARGO_TERM_COLOR: always
      RUSTUP_PERMIT_COPY_RENAME: 1
@@ -8,10 +8,13 @@ on:
      - 'gateway/**'
      - 'integrations/**'
      - 'nym-api/**'
+      - 'nym-authenticator-client/**'
      - 'nym-credential-proxy/**'
+      - 'nym-ip-packet-client/**'
      - 'nym-network-monitor/**'
      - 'nym-node/**'
      - 'nym-node-status-api/**'
+      - 'nym-registration-client/**'
      - 'nym-statistics-api/**'
      - 'nym-outfox/**'
      - 'nym-validator-rewarder/**'
@@ -38,7 +41,7 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        os: [ arc-ubuntu-22.04, custom-windows-11, custom-macos-15 ]
+        os: [ arc-linux-latest, custom-windows-11, custom-macos-15 ]
    runs-on: ${{ matrix.os }}
    env:
      CARGO_TERM_COLOR: always
@@ -46,9 +49,9 @@ jobs:
      RUSTUP_PERMIT_COPY_RENAME: 1
    steps:
      - name: Install Dependencies (Linux)
-        run: sudo apt-get update && sudo apt-get -y install libwebkit2gtk-4.0-dev build-essential curl wget libssl-dev libgtk-3-dev libudev-dev squashfs-tools protobuf-compiler
+        run: sudo apt-get update && sudo apt-get -y install libwebkit2gtk-4.0-dev build-essential curl wget libssl-dev libgtk-3-dev libudev-dev squashfs-tools protobuf-compiler cmake
        continue-on-error: true
-        if: contains(matrix.os, 'ubuntu')
+        if: contains(matrix.os, 'linux')

      - name: Check out repository code
        uses: actions/checkout@v4
@@ -63,7 +66,7 @@ jobs:

      # To avoid running out of disk space, skip generating debug symbols
      - name: Set debug to false (unix)
-        if: contains(matrix.os, 'ubuntu') || contains(matrix.os, 'mac')
+        if: contains(matrix.os, 'linux') || contains(matrix.os, 'mac')
        run: |
          sed -i.bak 's/\[profile.dev\]/\[profile.dev\]\ndebug = false/' Cargo.toml
          git diff
@@ -81,26 +84,35 @@ jobs:
          command: fmt
          args: --all -- --check

-      - name: Clippy
+      - name: Clippy (macos)
+        if: contains(matrix.os, 'mac')
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: --workspace --all-targets --exclude nym-gateway-probe -- -D warnings
+
+      - name: Clippy (non-macos)
+        if: contains(matrix.os, 'linux') || contains(matrix.os, 'windows')
        uses: actions-rs/cargo@v1
        with:
          command: clippy
          args: --workspace --all-targets -- -D warnings

+
      - name: Build all binaries
        uses: actions-rs/cargo@v1
        with:
          command: build

      - name: Build all examples
-        if: contains(matrix.os, 'ubuntu')
+        if: contains(matrix.os, 'linux')
        uses: actions-rs/cargo@v1
        with:
          command: build
          args: --workspace --examples

      - name: Run all tests
-        if: contains(matrix.os, 'ubuntu')
+        if: contains(matrix.os, 'linux')
        uses: actions-rs/cargo@v1
        env:
          NYM_API: https://sandbox-nym-api1.nymtech.net/api
@@ -109,7 +121,7 @@ jobs:
          args: --workspace

      - name: Run expensive tests
-        if: (github.ref == 'refs/heads/develop' || github.event.pull_request.base.ref == 'develop' || github.event.pull_request.base.ref == 'master') && contains(matrix.os, 'ubuntu')
+        if: (github.ref == 'refs/heads/develop' || github.event.pull_request.base.ref == 'develop' || github.event.pull_request.base.ref == 'master') && contains(matrix.os, 'linux')
        uses: actions-rs/cargo@v1
        with:
          command: test
@@ -10,13 +10,13 @@ env:

 jobs:
  check-if-tag-exists:
-    runs-on: arc-ubuntu-22.04-dind
+    runs-on: arc-linux-latest-dind
    steps:
      - name: Checkout repo
        uses: actions/checkout@v4

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
+        uses: mikefarah/yq@v4.47.1
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
@@ -16,7 +16,7 @@ jobs:
        uses: actions/checkout@v4

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
+        uses: mikefarah/yq@v4.47.1
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
@@ -11,7 +11,7 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        platform: [ arc-ubuntu-22.04 ]
+        platform: [ arc-linux-latest-dind ]

    runs-on: ${{ matrix.platform }}
    env:
@@ -28,18 +28,11 @@ jobs:
          mkdir -p $OUTPUT_DIR
          echo $OUTPUT_DIR

-      - name: Install Rust stable
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          target: wasm32-unknown-unknown
-          override: true
+      - name: Build contracts
+        run: make optimize-contracts

-      - name: Install cosmwasm-check
-        run: cargo install cosmwasm-check
-
-      - name: Build release contracts
-        run: make publish-contracts
+      - name: Check optimized contracts
+        run: make docker-check-contracts

      - name: Prepare build output
        shell: bash
@@ -17,7 +17,7 @@ jobs:
  build:
    # since it's going to be compiled into wasm, there's absolutely
    # no point in running CI on different OS-es
-    runs-on: ubuntu-22.04
+    runs-on: arc-linux-latest
    env:
      CARGO_TERM_COLOR: always
      RUSTUP_PERMIT_COPY_RENAME: 1
@@ -54,7 +54,7 @@ jobs:
        uses: actions-rs/cargo@v1
        with:
          command: test
-          args: --lib --manifest-path contracts/Cargo.toml
+          args: --lib --manifest-path contracts/Cargo.toml --all-features

      - name: Check formatting
        uses: actions-rs/cargo@v1
@@ -10,7 +10,7 @@ on:

 jobs:
  build:
-    runs-on: arc-ubuntu-22.04
+    runs-on: arc-linux-latest
    env:
      RUSTUP_PERMIT_COPY_RENAME: 1
    defaults:
@@ -6,16 +6,14 @@ on:
    paths:
      - "ts-packages/**"
      - "sdk/typescript/**"
-      - "nym-connect/desktop/src/**"
-      - "nym-connect/desktop/package.json"
      - "nym-wallet/src/**"
      - "nym-wallet/package.json"
-      - "explorer/**"
+      - "explorer-v2/**"
      - ".github/workflows/ci-lint-typescript.yml"

 jobs:
  build:
-    runs-on: ubuntu-22.04
+    runs-on: arc-linux-latest
    env:
      RUSTUP_PERMIT_COPY_RENAME: 1
    steps:
@@ -25,6 +23,7 @@ jobs:
      - uses: actions/setup-node@v4
        with:
          node-version: 20
+
      - name: Setup yarn
        run: npm install -g yarn

@@ -37,14 +36,12 @@ jobs:
        run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh

      - name: Install wasm-opt
-        uses: ./.github/actions/install-wasm-opt
-        with:
-          version: '116'
+        run: cargo install wasm-opt

      - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
        with:
-          go-version: "1.23.7"
+          go-version: "1.24.6"

      - name: Install
        run: yarn
@@ -52,7 +49,11 @@ jobs:
      - name: Build packages
        run: yarn build:ci

+      - name: Install again
+        run: yarn
+
      - name: Lint
        run: yarn lint
+
      - name: Typecheck with tsc
        run: yarn tsc
@@ -11,7 +11,7 @@ on:

 jobs:
  build:
-    runs-on: arc-ubuntu-22.04
+    runs-on: arc-linux-latest
    env:
      CARGO_TERM_COLOR: always
      RUSTUP_PERMIT_COPY_RENAME: 1
@@ -8,7 +8,7 @@ on:

 jobs:
  build:
-    runs-on: custom-linux
+    runs-on: arc-linux-latest
    steps:
      - uses: actions/checkout@v4

@@ -4,14 +4,14 @@ on:
  workflow_dispatch:
  pull_request:
    paths:
-      - 'wasm/**'
-      - 'clients/client-core/**'
-      - 'common/**'
-      - '.github/workflows/ci-sdk-wasm.yml'
+      - "wasm/**"
+      - "clients/client-core/**"
+      - "common/**"
+      - ".github/workflows/ci-sdk-wasm.yml"

 jobs:
  wasm:
-    runs-on: arc-ubuntu-22.04
+    runs-on: arc-linux-latest
    env:
      CARGO_TERM_COLOR: always
      RUSTUP_PERMIT_COPY_RENAME: 1
@@ -33,7 +33,7 @@ jobs:
      - name: Set up Go
        uses: actions/setup-go@v5
        with:
-          go-version: "1.23.7"
+          go-version: "1.24.6"

      - name: Install wasm-pack
        run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
@@ -41,7 +41,7 @@ jobs:
      - name: Install wasm-opt
        uses: ./.github/actions/install-wasm-opt
        with:
-          version: '116'
+          version: "116"

      - name: Install wasm-bindgen-cli
        run: cargo install wasm-bindgen-cli
@@ -6,7 +6,7 @@ jobs:
  greeting:
    runs-on: ubuntu-latest
    steps:
-    - uses: actions/first-interaction@v1
+    - uses: actions/first-interaction@v3
      with:
        repo-token: ${{ secrets.GITHUB_TOKEN }}
        issue-message: 'Thank you for raising this issue'
@@ -31,7 +31,7 @@ jobs:
      - name: Check out repository code
        uses: actions/checkout@v4
      - name: Download report from previous job
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
        with:
          name: report
          path: .github/workflows/support-files/notifications
@@ -21,7 +21,7 @@ jobs:
      fail-fast: false
      matrix:
        include:
-          - os: arc-ubuntu-22.04
+          - os: arc-linux-latest
            target: x86_64-unknown-linux-gnu
    runs-on:  ${{ matrix.os }}

@@ -56,7 +56,7 @@ jobs:
      - name: Install Rust stable
        uses: actions-rs/toolchain@v1
        with:
-          toolchain: 1.86.0
+          toolchain: 1.88.0
          override: true

      - name: Build all binaries
@@ -25,7 +25,7 @@ jobs:
        uses: actions/checkout@v4

      - name: Install Java
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
        with:
          distribution: "temurin"
          java-version: "17"
@@ -91,7 +91,7 @@ jobs:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Download binary artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
        with:
          name: nyms5-apk-arch64
          path: apk
@@ -4,7 +4,7 @@ on:

 jobs:
  publish:
-    runs-on: arc-ubuntu-22.04
+    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

@@ -17,10 +17,13 @@ jobs:
      - name: Setup yarn
        run: npm install -g yarn

-      - name: Install Rust stable
+      - name: Install rust toolchain
        uses: actions-rs/toolchain@v1
        with:
+          profile: minimal
          toolchain: stable
+          override: true
+          components: rustfmt, clippy

      - name: Install wasm-pack
        run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
@@ -29,9 +32,9 @@ jobs:
        run: cargo install wasm-opt

      - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
        with:
-          go-version: "1.23.7"
+          go-version: "1.24.6"

      - name: Install dependencies
        run: yarn
@@ -8,7 +8,7 @@ env:

 jobs:
  build-container:
-    runs-on: arc-ubuntu-22.04-dind
+    runs-on: arc-linux-latest-dind
    steps:
      - name: Login to Harbor
        uses: docker/login-action@v3
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
+        uses: mikefarah/yq@v4.47.1
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/nym-credential-proxy/Cargo.toml
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
+        uses: mikefarah/yq@v4.47.1
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
+        uses: mikefarah/yq@v4.47.1
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/nym-network-monitor/Cargo.toml
@@ -3,11 +3,6 @@ name: Build and upload Node Status agent container to harbor.nymte.ch
 on:
  workflow_dispatch:
    inputs:
-      gateway_probe_git_ref:
-        type: string
-        default: nym-vpn-core-v1.4.0
-        required: true
-        description: Which gateway probe git ref to build the image with
      release_image:
        description: 'Tag image as a release'
        required: true
@@ -20,7 +15,7 @@ env:

 jobs:
  build-container:
-    runs-on: arc-ubuntu-22.04-dind
+    runs-on: arc-linux-latest-dind
    steps:
      - name: Login to Harbor
        uses: docker/login-action@v3
@@ -38,44 +33,25 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
        id: get_version
-        with:
-          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
-
-      - name: cleanup-gateway-probe-ref
-        id: cleanup_gateway_probe_ref
        run: |
-          GATEWAY_PROBE_GIT_REF=${{ github.event.inputs.gateway_probe_git_ref }}
-          GIT_REF_SLUG="${GATEWAY_PROBE_GIT_REF//\//-}"
-          echo "git_ref=${GIT_REF_SLUG}" >> $GITHUB_OUTPUT
+          VERSION=$(yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml)
+          echo "result=$VERSION" >> $GITHUB_OUTPUT

-      - name: Set GIT_TAG variable
-        run: echo "GIT_TAG=${{ env.WORKING_DIRECTORY }}-${{ steps.get_version.outputs.result }}-${{ steps.cleanup_gateway_probe_ref.outputs.git_ref }}" >> $GITHUB_ENV
-
-      - name: Set RELEASE_TAG variable
+      - name: Initialize RELEASE_TAG
+        run: echo "RELEASE_TAG=" >> $GITHUB_ENV
+      
+      - name: Set RELEASE_TAG for release
        if: github.event.inputs.release_image == 'true'
        run: echo "RELEASE_TAG=golden-" >> $GITHUB_ENV
-
+      
      - name: Set IMAGE_NAME_AND_TAGS variable
-        run: echo "IMAGE_NAME_AND_TAGS=${{ env.CONTAINER_NAME }}:${{ env.RELEASE_TAG }}${{ steps.get_version.outputs.result }}-${{ steps.cleanup_gateway_probe_ref.outputs.git_ref }}" >> $GITHUB_ENV
-
+        run: echo "IMAGE_NAME_AND_TAGS=${{ env.CONTAINER_NAME }}:${{ env.RELEASE_TAG }}${{ steps.get_version.outputs.result }}" >> $GITHUB_ENV
+        
      - name: New env vars
-        run: echo "RELEASE_TAG='$RELEASE_TAG' GIT_TAG='$GIT_TAG' IMAGE_NAME_AND_TAGS='$IMAGE_NAME_AND_TAGS'"        
-
-      # - name: Remove existing tag if exists
-      #   run: |
-      #     if git rev-parse $${{ env.GIT_TAG }} >/dev/null 2>&1; then
-      #       git push --delete origin $${{ env.GIT_TAG }}
-      #       git tag -d $${{ env.GIT_TAG }}
-      #     fi
-
-      # - name: Create tag
-      #   run: |
-      #     git tag -a $${{ env.GIT_TAG }} -m "Version ${{ steps.get_version.outputs.result }}-${{ steps.cleanup_gateway_probe_ref.outputs.git_ref }}"
-      #     git push origin $${{ env.GIT_TAG }}
+        run: echo "RELEASE_TAG='$RELEASE_TAG' IMAGE_NAME_AND_TAGS='$IMAGE_NAME_AND_TAGS'"        

      - name: BuildAndPushImageOnHarbor
        run: |
-          docker build --build-arg GIT_REF=${{ github.event.inputs.gateway_probe_git_ref }} -f ${{ env.WORKING_DIRECTORY }}/Dockerfile . -t harbor.nymte.ch/nym/${{ env.IMAGE_NAME_AND_TAGS }}
+          docker build -f ${{ env.WORKING_DIRECTORY }}/Dockerfile . -t harbor.nymte.ch/nym/${{ env.IMAGE_NAME_AND_TAGS }}
          docker push harbor.nymte.ch/nym/${{ env.CONTAINER_NAME }} --all-tags
@@ -14,7 +14,7 @@ env:

 jobs:
  build-container:
-    runs-on: arc-ubuntu-22.04-dind
+    runs-on: arc-linux-latest-dind
    steps:
      - name: Login to Harbor
        uses: docker/login-action@v3
@@ -32,21 +32,24 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
        id: get_version
-        with:
-          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
+        run: |
+          VERSION=$(yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml)
+          echo "result=$VERSION" >> $GITHUB_OUTPUT

      - name: Set GIT_TAG variable
        run: echo "GIT_TAG=${{ env.WORKING_DIRECTORY }}-${{ steps.get_version.outputs.result }}" >> $GITHUB_ENV

-      - name: Set RELEASE_TAG variable
+      - name: Initialise RELEASE_TAG
+        run: echo "RELEASE_TAG=" >> $GITHUB_ENV
+      
+      - name: Set RELEASE_TAG for release
        if: github.event.inputs.release_image == 'true'
        run: echo "RELEASE_TAG=golden-" >> $GITHUB_ENV
-
+      
      - name: Set IMAGE_NAME_AND_TAGS variable
        run: echo "IMAGE_NAME_AND_TAGS=${{ env.CONTAINER_NAME }}:${{ env.RELEASE_TAG }}${{ steps.get_version.outputs.result }}" >> $GITHUB_ENV
-
+        
      - name: New env vars
        run: echo "RELEASE_TAG='$RELEASE_TAG' GIT_TAG='$GIT_TAG' IMAGE_NAME_AND_TAGS='$IMAGE_NAME_AND_TAGS'"        

@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
+        uses: mikefarah/yq@v4.47.1
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/nym-api/Cargo.toml
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
+        uses: mikefarah/yq@v4.47.1
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
@@ -8,7 +8,7 @@ env:

 jobs:
  build-container:
-    runs-on: arc-ubuntu-22.04-dind
+    runs-on: arc-linux-latest-dind
    steps:
      - name: Login to Harbor
        uses: docker/login-action@v3
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
+        uses: mikefarah/yq@v4.47.1
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
+        uses: mikefarah/yq@v4.47.1
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.45.4
+        uses: mikefarah/yq@v4.47.1
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
@@ -63,3 +63,6 @@ nym-api/redocly/formatted-openapi.json

 **/settings.sql
 **/enter_db.sh
+.beads
+CLAUDE.md
+docs
@@ -4,6 +4,326 @@ Post 1.0.0 release, the changelog format is based on [Keep a Changelog](https://

 ## [Unreleased]

+## [2025.20-leerdammer] (2025-11-12)
+
+- Max/tweak ts sdk actions ([#6185])
+- chore: resolve clippy 1.91 warnings ([#6168])
+- [chore] Remove unused dependencies ([#6151])
+- Use typed-builder for registration client builder config ([#6150])
+- tommy is too quick ([#6149])
+- configurable mixnet client startup timeout ([#6148])
+- [Feature/operators]: QUIC bridge deployment script v2 ([#6145])
+- Bugfix: Add circuit breaker ([#6143])
+- bugfix: update internal owner address in transferred share ([#6139])
+- Update quic_bridge_deployment.sh for IPv4 and .deb package ([#6138])
+- feat: expose more explicit new_with_fronted_urls builder for http API client ([#6136])
+- bugfix: update stored epoch share when changing ownership ([#6135])
+- Domain fronting ([#6134])
+- bugfix: update stored epoch share when changing announce address ([#6131])
+
+[#6185]: https://github.com/nymtech/nym/pull/6185
+[#6168]: https://github.com/nymtech/nym/pull/6168
+[#6151]: https://github.com/nymtech/nym/pull/6151
+[#6150]: https://github.com/nymtech/nym/pull/6150
+[#6149]: https://github.com/nymtech/nym/pull/6149
+[#6148]: https://github.com/nymtech/nym/pull/6148
+[#6145]: https://github.com/nymtech/nym/pull/6145
+[#6143]: https://github.com/nymtech/nym/pull/6143
+[#6139]: https://github.com/nymtech/nym/pull/6139
+[#6138]: https://github.com/nymtech/nym/pull/6138
+[#6136]: https://github.com/nymtech/nym/pull/6136
+[#6135]: https://github.com/nymtech/nym/pull/6135
+[#6134]: https://github.com/nymtech/nym/pull/6134
+[#6131]: https://github.com/nymtech/nym/pull/6131
+
+## [2025.19-kase] (2025-10-30)
+
+- update ns agent workflow ([#6154])
+- Cherry pick - request #6143 from nymtech/bugfix/mix-tx-closed-v2 ([#6153])
+- bugfix: nym-credential-proxy query params parsing regression ([#6121])
+- bugfix: revert some dep updates introduced in #6043 ([#6120])
+- Skip ipv6 metadata endpoint request ([#6118])
+- update to no longer use 1mb files ([#6117])
+- chore: restore pending dkg contract state migration ([#6116])
+- Revert "Propagate cancel token to mixnet client" ([#6115])
+- Update dirs to 6.0 ([#6109])
+- Propagate cancel token to mixnet client ([#6105])
+- bugfix: retrieve and update ticketbook in the same query ([#6101])
+- bugfix: include network name in the default gateway probe config path ([#6100])
+- Bugfix/incompatibility fixes ([#6099])
+- [DOCs/operators] QUIC deployment script & docs ([#6098])
+- bugfix: testnet manager 02sql migration ([#6096])
+- feat: move gateway probe to monorepo (and update to rust edition 2024) ([#6094])
+- bugfix: use custom topology provider for list of init gateways ([#6092])
+- Max/fix wasm client + build commands ([#6043])
+
+[#6154]: https://github.com/nymtech/nym/pull/6154
+[#6153]: https://github.com/nymtech/nym/pull/6153
+[#6121]: https://github.com/nymtech/nym/pull/6121
+[#6120]: https://github.com/nymtech/nym/pull/6120
+[#6118]: https://github.com/nymtech/nym/pull/6118
+[#6117]: https://github.com/nymtech/nym/pull/6117
+[#6116]: https://github.com/nymtech/nym/pull/6116
+[#6115]: https://github.com/nymtech/nym/pull/6115
+[#6109]: https://github.com/nymtech/nym/pull/6109
+[#6105]: https://github.com/nymtech/nym/pull/6105
+[#6101]: https://github.com/nymtech/nym/pull/6101
+[#6100]: https://github.com/nymtech/nym/pull/6100
+[#6099]: https://github.com/nymtech/nym/pull/6099
+[#6098]: https://github.com/nymtech/nym/pull/6098
+[#6096]: https://github.com/nymtech/nym/pull/6096
+[#6094]: https://github.com/nymtech/nym/pull/6094
+[#6092]: https://github.com/nymtech/nym/pull/6092
+[#6043]: https://github.com/nymtech/nym/pull/6043
+
+## [2025.18-jarlsberg] (2025-10-14)
+
+- ns-api: add descriptions to dVPN gateway responses ([#6102])
+- NS API: use new probe download filesize and milliseconds field ([#6097])
+- ns-api: use download files size from probes instead of parsing filenames ([#6095])
+- ns-api: add new fields for probe output for query_metadata and download file size and duration in ms ([#6091])
+- Bugfix/bloomfilters purge ([#6089])
+- Hotfix: Update API source in node ping tester script ([#6082])
+- Get wireguard keypair as arg instead of reading it from disk ([#6078])
+- Feature: Ping probe all nodes /described nodes from a server ([#6074])
+- Node Status API: add bridge information to dVPN endpoint ([#6069])
+- frontdoor typo fix ([#6067])
+- Feature: Node rewards tracker ([#6064])
+- [chore] Clippy fix ([#6060])
+- Registration Client ([#6059])
+- Bugfix: Nym node CLI download nym-node exception ([#6058])
+- Feature: Nym node html landing page ([#6053])
+- feat: DKG contract method for updating announce address ([#6050])
+- feat: NS ticket faucet ([#6047])
+- Bridge proto client params in Self-Described ([#6035])
+- Node Status API: remove sqlite support ([#6004])
+- Benny/ci contract fix ([#5962])
+
+[#6102]: https://github.com/nymtech/nym/pull/6102
+[#6097]: https://github.com/nymtech/nym/pull/6097
+[#6095]: https://github.com/nymtech/nym/pull/6095
+[#6091]: https://github.com/nymtech/nym/pull/6091
+[#6089]: https://github.com/nymtech/nym/pull/6089
+[#6082]: https://github.com/nymtech/nym/pull/6082
+[#6078]: https://github.com/nymtech/nym/pull/6078
+[#6074]: https://github.com/nymtech/nym/pull/6074
+[#6069]: https://github.com/nymtech/nym/pull/6069
+[#6067]: https://github.com/nymtech/nym/pull/6067
+[#6064]: https://github.com/nymtech/nym/pull/6064
+[#6060]: https://github.com/nymtech/nym/pull/6060
+[#6059]: https://github.com/nymtech/nym/pull/6059
+[#6058]: https://github.com/nymtech/nym/pull/6058
+[#6053]: https://github.com/nymtech/nym/pull/6053
+[#6050]: https://github.com/nymtech/nym/pull/6050
+[#6047]: https://github.com/nymtech/nym/pull/6047
+[#6035]: https://github.com/nymtech/nym/pull/6035
+[#6004]: https://github.com/nymtech/nym/pull/6004
+[#5962]: https://github.com/nymtech/nym/pull/5962
+
+## [2025.17-isabirra] (2025-09-29)
+
+- Bugfix | Fix the registration handshake ([#6062])
+- Convenience for ShutdownTracker ([#6038])
+- chore: made http-api-client-macro doctest compile ([#6037])
+- feat: refresh mixnet contract on epoch progression ([#6023])
+- chore: remove legacy nodes from nym api [and kinda-ish from node status api] ([#6021])
+- Feature/credential proxy crate ([#6018])
+- Moving clients crate from vpn-client repo to here ([#6015])
+- Feature/cancellation migration ([#6014])
+- Use default value for the ports until api is deployed ([#6007])
+- bugfix: return from MixTrafficController if client request channel has closed ([#6002])
+- Revert "Create an axum_test client for more integrated unit testing (… ([#5999])
+- chore: upgraded syn to 2.0 and removed nym-execute ([#5998])
+- feat: use `ShutdownToken` (`CancellationToken` inside) for nym-api ([#5997])
+- bugfix: Recipient deserialisation for deserialisers missing bytes specialisation ([#5991])
+- chore: use updated version of simulate endpoint ([#5988])
+- chore: purge temp databases on build ([#5984])
+- Bump sha.js from 2.4.11 to 2.4.12 ([#5983])
+- Feature: Delegation program stake checker and adjuster ([#5980])
+- build(deps): bump actions/setup-java from 4 to 5 ([#5975])
+- Domain fronting integration ([#5974])
+- chore: internal hidden command to force advance nyx epoch ([#5964])
+- Create an axum_test client for more integrated unit testing ([#5956])
+- feat: shared library for attempting to retrieve update mode attestation ([#5954])
+- Bump slab from 0.4.10 to 0.4.11 ([#5952])
+- build(deps): bump actions/first-interaction from 1 to 3 ([#5950])
+- fix: use WASM compatible time API in client ([#5948])
+- feat: credential proxy deposit pool ([#5945])
+- build(deps): bump actions/download-artifact from 4 to 5 ([#5939])
+- feat: nym signers monitor ([#5933])
+- Bump console from 0.15.11 to 0.16.0 ([#5931])
+- Bump mock_instant from 0.5.3 to 0.6.0 ([#5930])
+- Bump tokio from 1.46.1 to 1.47.1 ([#5929])
+- Bump defguard_wireguard_rs from v0.4.7 to v0.7.5 ([#5928])
+- Bump indicatif from 0.17.11 to 0.18.0 ([#5924])
+- Feature: Nym node autorun CLI ([#5916])
+- build(deps): bump mikefarah/yq from 4.45.4 to 4.47.1 ([#5911])
+- build(deps): bump pbkdf2 from 3.1.2 to 3.1.3 ([#5869])
+
+[#6062]: https://github.com/nymtech/nym/pull/6062
+[#6038]: https://github.com/nymtech/nym/pull/6038
+[#6037]: https://github.com/nymtech/nym/pull/6037
+[#6023]: https://github.com/nymtech/nym/pull/6023
+[#6021]: https://github.com/nymtech/nym/pull/6021
+[#6018]: https://github.com/nymtech/nym/pull/6018
+[#6015]: https://github.com/nymtech/nym/pull/6015
+[#6014]: https://github.com/nymtech/nym/pull/6014
+[#6007]: https://github.com/nymtech/nym/pull/6007
+[#6002]: https://github.com/nymtech/nym/pull/6002
+[#5999]: https://github.com/nymtech/nym/pull/5999
+[#5998]: https://github.com/nymtech/nym/pull/5998
+[#5997]: https://github.com/nymtech/nym/pull/5997
+[#5991]: https://github.com/nymtech/nym/pull/5991
+[#5988]: https://github.com/nymtech/nym/pull/5988
+[#5984]: https://github.com/nymtech/nym/pull/5984
+[#5983]: https://github.com/nymtech/nym/pull/5983
+[#5980]: https://github.com/nymtech/nym/pull/5980
+[#5975]: https://github.com/nymtech/nym/pull/5975
+[#5974]: https://github.com/nymtech/nym/pull/5974
+[#5964]: https://github.com/nymtech/nym/pull/5964
+[#5956]: https://github.com/nymtech/nym/pull/5956
+[#5954]: https://github.com/nymtech/nym/pull/5954
+[#5952]: https://github.com/nymtech/nym/pull/5952
+[#5950]: https://github.com/nymtech/nym/pull/5950
+[#5948]: https://github.com/nymtech/nym/pull/5948
+[#5945]: https://github.com/nymtech/nym/pull/5945
+[#5939]: https://github.com/nymtech/nym/pull/5939
+[#5933]: https://github.com/nymtech/nym/pull/5933
+[#5931]: https://github.com/nymtech/nym/pull/5931
+[#5930]: https://github.com/nymtech/nym/pull/5930
+[#5929]: https://github.com/nymtech/nym/pull/5929
+[#5928]: https://github.com/nymtech/nym/pull/5928
+[#5924]: https://github.com/nymtech/nym/pull/5924
+[#5916]: https://github.com/nymtech/nym/pull/5916
+[#5911]: https://github.com/nymtech/nym/pull/5911
+[#5869]: https://github.com/nymtech/nym/pull/5869
+
+## [2025.16-halloumi] (2025-09-16)
+
+- Backport metadata endpoint ([#6010])
+- bugfix: make sure tables are removed in correct order to not trigger FK constraint issue ([#5987])
+- chore: move authenticator into gateway crate ([#5982])
+- Fix the ns api ci workflow ([#5981])
+- Remove freshness check on testrun submit ([#5977])
+- Update sysinfo to the latest ([#5976])
+- bugfix: manually calculate per node work on rewarded set changes ([#5972])
+- fixing the ci for ns agent ([#5965])
+- Feature/testing utils ([#5963])
+- bugfix: fix ci-build for linux (and use updated runner) ([#5958])
+- chore: updated refs to cheddar rev of nym repo ([#5955])
+- http api client adjustment ([#5953])
+- chore: fix rust 1.89 clippy issues ([#5944])
+- Wireguard metadata client library ([#5943])
+- chore: remove unused import ([#5942])
+- feat: introduce additional checks when attempting to send to bounded channels ([#5941])
+- Move credential verifier in peer controller ([#5938])
+- change PK/FK on expiration date signatures tables ([#5934])
+- Wireguard private metadata ([#5915])
+
+[#6010]: https://github.com/nymtech/nym/pull/6010
+[#5987]: https://github.com/nymtech/nym/pull/5987
+[#5982]: https://github.com/nymtech/nym/pull/5982
+[#5981]: https://github.com/nymtech/nym/pull/5981
+[#5977]: https://github.com/nymtech/nym/pull/5977
+[#5976]: https://github.com/nymtech/nym/pull/5976
+[#5972]: https://github.com/nymtech/nym/pull/5972
+[#5965]: https://github.com/nymtech/nym/pull/5965
+[#5963]: https://github.com/nymtech/nym/pull/5963
+[#5958]: https://github.com/nymtech/nym/pull/5958
+[#5955]: https://github.com/nymtech/nym/pull/5955
+[#5953]: https://github.com/nymtech/nym/pull/5953
+[#5944]: https://github.com/nymtech/nym/pull/5944
+[#5943]: https://github.com/nymtech/nym/pull/5943
+[#5942]: https://github.com/nymtech/nym/pull/5942
+[#5941]: https://github.com/nymtech/nym/pull/5941
+[#5938]: https://github.com/nymtech/nym/pull/5938
+[#5934]: https://github.com/nymtech/nym/pull/5934
+[#5915]: https://github.com/nymtech/nym/pull/5915
+
+## [2025.15-gruyere] (2025-08-20)
+
+- Migrate strum to 0.27.2 ([#5960])
+- WG exit policy scripts update ([#5921])
+- Make DNS Resolver fallback optional ([#5920])
+- nym-node debug command to reset providers db ([#5914])
+- basic zulip client for sending messages ([#5913])
+- chore: allow compatibility with 'CDLA-Permissive-2.0' ([#5910])
+- feat: ecash liveness check ([#5890])
+- Remove old free credential handle ([#5864])
+
+[#5960]: https://github.com/nymtech/nym/pull/5960
+[#5921]: https://github.com/nymtech/nym/pull/5921
+[#5920]: https://github.com/nymtech/nym/pull/5920
+[#5914]: https://github.com/nymtech/nym/pull/5914
+[#5913]: https://github.com/nymtech/nym/pull/5913
+[#5910]: https://github.com/nymtech/nym/pull/5910
+[#5890]: https://github.com/nymtech/nym/pull/5890
+[#5864]: https://github.com/nymtech/nym/pull/5864
+
+## [2025.14-feta] (2025-08-05)
+
+- chore: nym node tokio console ([#5909])
+- Feature/dkg snapshot epoch ([#5900])
+- Feature/dkg epoch dealers query ([#5899])
+- sqlx-pool-guard: allocate more memory on windows ([#5896])
+- Support mnemonic in the NS agent ([#5883])
+- Allow PG database backend ([#5880])
+
+[#5909]: https://github.com/nymtech/nym/pull/5909
+[#5900]: https://github.com/nymtech/nym/pull/5900
+[#5899]: https://github.com/nymtech/nym/pull/5899
+[#5896]: https://github.com/nymtech/nym/pull/5896
+[#5883]: https://github.com/nymtech/nym/pull/5883
+[#5880]: https://github.com/nymtech/nym/pull/5880
+
+## [2025.13-emmental] (2025-07-22)
+
+- fix: don't allow mixnode running in exit mode ([#5898])
+- fix contract build process in Makefile ([#5892])
+- bugfix: ignore 'Send' responses when claiming bandwidth ([#5884])
+- Update push-node-status-agent.yaml ([#5882])
+- listen for shutdown signals during nym-node startup ([#5879])
+- feat: forbid running mixnode + entry on the same node ([#5878])
+- chore: 1.88 clippy ([#5877])
+- Batch SQL writes for packet stats ([#5874])
+- fix the broken link ([#5873])
+- Set busy_timeout in sqlx ([#5872])
+- feat: basic performance contract integration [within Nym API] ([#5871])
+- scraper bugfix: ignore precommits from missing validators ([#5867])
+- Return true remaining ([#5866])
+- Make Mix hops optional for Mixnet Client SURBs ([#5861])
+- Check gateway supported versions ([#5860])
+- Add build info endpoints ([#5857])
+- Clear out screaming logs ([#5856])
+- fix removal of qa env ([#5855])
+- Use display when printing paths ([#5853])
+- feat: initial performance contract ([#5833])
+- Security patches for the `dkg` crate ([#5828])
+- HTTP Discovery objects & network defaults ([#5814])
+
+[#5898]: https://github.com/nymtech/nym/pull/5898
+[#5892]: https://github.com/nymtech/nym/pull/5892
+[#5884]: https://github.com/nymtech/nym/pull/5884
+[#5882]: https://github.com/nymtech/nym/pull/5882
+[#5879]: https://github.com/nymtech/nym/pull/5879
+[#5878]: https://github.com/nymtech/nym/pull/5878
+[#5877]: https://github.com/nymtech/nym/pull/5877
+[#5874]: https://github.com/nymtech/nym/pull/5874
+[#5873]: https://github.com/nymtech/nym/pull/5873
+[#5872]: https://github.com/nymtech/nym/pull/5872
+[#5871]: https://github.com/nymtech/nym/pull/5871
+[#5867]: https://github.com/nymtech/nym/pull/5867
+[#5866]: https://github.com/nymtech/nym/pull/5866
+[#5861]: https://github.com/nymtech/nym/pull/5861
+[#5860]: https://github.com/nymtech/nym/pull/5860
+[#5857]: https://github.com/nymtech/nym/pull/5857
+[#5856]: https://github.com/nymtech/nym/pull/5856
+[#5855]: https://github.com/nymtech/nym/pull/5855
+[#5853]: https://github.com/nymtech/nym/pull/5853
+[#5833]: https://github.com/nymtech/nym/pull/5833
+[#5828]: https://github.com/nymtech/nym/pull/5828
+[#5814]: https://github.com/nymtech/nym/pull/5814
+
 ## [2025.12-dolcelatte] (2025-07-07)

 - bugfix: key-rotation + reply SURBs ([#5876])
@@ -31,6 +31,7 @@ members = [
    "common/client-libs/mixnet-client",
    "common/client-libs/validator-client",
    "common/commands",
+    "common/nym-common",
    "common/config",
    "common/cosmwasm-smart-contracts/coconut-dkg",
    "common/cosmwasm-smart-contracts/contracts-common",
@@ -39,9 +40,11 @@ members = [
    "common/cosmwasm-smart-contracts/ecash-contract",
    "common/cosmwasm-smart-contracts/group-contract",
    "common/cosmwasm-smart-contracts/mixnet-contract",
-    "common/cosmwasm-smart-contracts/multisig-contract", "common/cosmwasm-smart-contracts/nym-performance-contract",
+    "common/cosmwasm-smart-contracts/multisig-contract",
+    "common/cosmwasm-smart-contracts/nym-performance-contract",
    "common/cosmwasm-smart-contracts/nym-pool-contract",
    "common/cosmwasm-smart-contracts/vesting-contract",
+    "common/credential-proxy",
    "common/credential-storage",
    "common/credential-utils",
    "common/credential-verification",
@@ -49,13 +52,15 @@ members = [
    "common/credentials-interface",
    "common/crypto",
    "common/dkg",
+    "common/ecash-signer-check",
+    "common/ecash-signer-check-types",
    "common/ecash-time",
-    "common/execute",
    "common/exit-policy",
    "common/gateway-requests",
    "common/gateway-stats-storage",
    "common/gateway-storage",
    "common/http-api-client",
+    "common/http-api-client-macro",
    "common/http-api-common",
    "common/inclusion-probability",
    "common/ip-packet-requests",
@@ -64,7 +69,13 @@ members = [
    "common/network-defaults",
    "common/node-tester-utils",
    "common/nonexhaustive-delayqueue",
+    "common/nym-cache",
+    "common/nym-connection-monitor",
    "common/nym-id",
+    "common/nym-kcp",
+    "common/nym-lp",
+    "common/nym-lp-common",
+    "common/nym-kkt",
    "common/nym-metrics",
    "common/nym_offline_compact_ecash",
    "common/nymnoise",
@@ -82,6 +93,7 @@ members = [
    "common/nymsphinx/types",
    "common/nyxd-scraper",
    "common/pemstore",
+    "common/registration",
    "common/serde-helpers",
    "common/service-provider-requests-common",
    "common/socks5-client-core",
@@ -90,24 +102,33 @@ members = [
    "common/statistics",
    "common/store-cipher",
    "common/task",
+    "common/test-utils",
    "common/ticketbooks-merkle",
    "common/topology",
    "common/tun",
    "common/types",
+    "common/upgrade-mode-check",
    "common/verloc",
    "common/wasm/client-core",
    "common/wasm/storage",
    "common/wasm/utils",
    "common/wireguard",
+    "common/wireguard-private-metadata/client",
+    "common/wireguard-private-metadata/server",
+    "common/wireguard-private-metadata/shared",
+    "common/wireguard-private-metadata/tests",
    "common/wireguard-types",
+    "common/zulip-client",
    "documentation/autodoc",
    "gateway",
    "nym-api",
    "nym-api/nym-api-requests",
+    "nym-authenticator-client",
    "nym-browser-extension/storage",
    "nym-credential-proxy/nym-credential-proxy",
    "nym-credential-proxy/nym-credential-proxy-requests",
    "nym-credential-proxy/vpn-api-lib-wasm",
+    "nym-ip-packet-client",
    "nym-network-monitor",
    "nym-node",
    "nym-node-status-api/nym-node-status-agent",
@@ -116,6 +137,8 @@ members = [
    "nym-node/nym-node-metrics",
    "nym-node/nym-node-requests",
    "nym-outfox",
+    "nym-registration-client",
+    "nym-signers-monitor",
    "nym-statistics-api",
    "nym-validator-rewarder",
    "nyx-chain-watcher",
@@ -123,7 +146,6 @@ members = [
    "sdk/ffi/go",
    "sdk/ffi/shared",
    "sdk/rust/nym-sdk",
-    "service-providers/authenticator",
    "service-providers/common",
    "service-providers/ip-packet-router",
    "service-providers/network-requester",
@@ -132,10 +154,9 @@ members = [
    "tools/internal/contract-state-importer/importer-cli",
    "tools/internal/contract-state-importer/importer-contract",
    "tools/internal/mixnet-connectivity-check",
-    # "tools/internal/sdk-version-bump",
+    #    "tools/internal/sdk-version-bump",
    "tools/internal/ssl-inject",
    "tools/internal/testnet-manager",
-    "tools/internal/testnet-manager",
    "tools/internal/testnet-manager/dkg-bypass-contract",
    "tools/internal/validator-status-check",
    "tools/nym-cli",
@@ -148,11 +169,13 @@ members = [
    "wasm/mix-fetch",
    "wasm/node-tester",
    "wasm/zknym-lib",
+    "nym-gateway-probe",
 ]

 default-members = [
    "clients/native",
    "clients/socks5",
+    "nym-authenticator-client",
    "nym-api",
    "nym-credential-proxy/nym-credential-proxy",
    "nym-node",
@@ -161,22 +184,21 @@ default-members = [
    "nym-statistics-api",
    "nym-validator-rewarder",
    "nyx-chain-watcher",
-    "service-providers/authenticator",
    "service-providers/ip-packet-router",
    "service-providers/network-requester",
    "tools/nymvisor",
 ]

-exclude = ["explorer", "contracts", "nym-wallet", "cpu-cycles"]
+exclude = ["contracts", "nym-wallet", "cpu-cycles"]

 [workspace.package]
 authors = ["Nym Technologies SA"]
 repository = "https://github.com/nymtech/nym"
 homepage = "https://nymtech.net"
 documentation = "https://nymtech.net"
-edition = "2021"
+edition = "2024"
 license = "Apache-2.0"
-rust-version = "1.80"
+rust-version = "1.85"
 readme = "README.md"

 [workspace.dependencies]
@@ -186,6 +208,7 @@ aes = "0.8.1"
 aes-gcm = "0.10.1"
 aes-gcm-siv = "0.11.1"
 ammonia = "4"
+ansi_term = "0.12"
 anyhow = "1.0.98"
 arc-swap = "1.7.1"
 argon2 = "0.5.0"
@@ -198,7 +221,6 @@ base64 = "0.22.1"
 base85rs = "0.1.3"
 bincode = "1.3.3"
 bip39 = { version = "2.0.0", features = ["zeroize"] }
-bit-vec = "0.7.0"                                     # can we unify those?
 bitvec = "1.0.0"
 blake3 = "1.7.0"
 bloomfilter = "3.0.1"
@@ -217,8 +239,8 @@ clap_complete = "4.5"
 clap_complete_fig = "4.5"
 colored = "2.2"
 comfy-table = "7.1.4"
-console = "0.15.11"
-console-subscriber = "0.1.1"
+console = "0.16.0"
+console-subscriber = "0.4.1"
 console_error_panic_hook = "0.1"
 const-str = "0.5.6"
 const_format = "0.2.34"
@@ -226,14 +248,14 @@ criterion = "0.5"
 csv = "1.3.1"
 ctr = "0.9.1"
 cupid = "0.6.1"
-curve25519-dalek = "4.1"
+curve25519-dalek = "4.1.3"
 dashmap = "5.5.3"
 # We want https://github.com/DefGuard/wireguard-rs/pull/64 , but there's no crates.io release being pushed out anymore
 defguard_wireguard_rs = { git = "https://github.com/DefGuard/wireguard-rs.git", rev = "v0.4.7" }
 digest = "0.10.7"
-dirs = "5.0"
-doc-comment = "0.3"
+dirs = "6.0"
 dotenvy = "0.15.6"
+dyn-clone = "1.0.19"
 ecdsa = "0.16"
 ed25519-dalek = "2.1"
 encoding_rs = "0.8.35"
@@ -247,11 +269,8 @@ futures = "0.3.31"
 futures-util = "0.3"
 generic-array = "0.14.7"
 getrandom = "0.2.10"
-getset = "0.1.5"
 handlebars = "3.5.5"
-headers = "0.4.0"
 hex = "0.4.3"
-hex-literal = "0.3.3"
 hickory-resolver = "0.25"
 hkdf = "0.12.3"
 hmac = "0.12.1"
@@ -263,22 +282,25 @@ humantime = "2.2.0"
 humantime-serde = "1.1.1"
 hyper = "1.6.0"
 hyper-util = "0.1"
-indicatif = "0.17.11"
+indicatif = "0.18.0"
 inquire = "0.6.2"
+inventory = "0.3.21"
 ip_network = "0.4.1"
 ipnetwork = "0.20"
 itertools = "0.14.0"
+jwt-simple = { version = "0.12.12", default-features = false, features = [
+    "pure-rust",
+] }
 k256 = "0.13"
 lazy_static = "1.5.0"
 ledger-transport = "0.10.0"
 ledger-transport-hid = "0.10.0"
 log = "0.4"
-maxminddb = "0.23.0"
 mime = "0.3.17"
 moka = { version = "0.12", features = ["future"] }
 nix = "0.27.1"
 notify = "5.1.0"
-okapi = "0.7.0"
+num_enum = "0.7.5"
 once_cell = "1.21.3"
 opentelemetry = "0.19.0"
 opentelemetry-jaeger = "0.18.0"
@@ -286,7 +308,7 @@ parking_lot = "0.12.3"
 pem = "0.8"
 petgraph = "0.6.5"
 pin-project = "1.1"
-pin-project-lite = "0.2.16"
+pnet_packet = "0.35.0"
 publicsuffix = "2.3.0"
 proc_pidinfo = "0.1.3"
 quote = "1"
@@ -294,13 +316,10 @@ rand = "0.8.5"
 rand_chacha = "0.3"
 rand_core = "0.6.3"
 rand_distr = "0.4"
-rand_pcg = "0.3.1"
-rand_seeder = "0.2.3"
 rayon = "1.5.1"
 regex = "1.10.6"
 reqwest = { version = "0.12.15", default-features = false }
 rs_merkle = "1.5.0"
-safer-ffi = "0.1.13"
 schemars = "0.8.22"
 semver = "1.0.26"
 serde = "1.0.219"
@@ -311,22 +330,25 @@ serde_json_path = "0.7.2"
 serde_repr = "0.1"
 serde_with = "3.9.0"
 serde_yaml = "0.9.25"
+serde_plain = "1.0.2"
 sha2 = "0.10.9"
 si-scale = "0.2.3"
 snow = "0.9.6"
 sphinx-packet = "=0.6.0"
 sqlx = "0.8.6"
-strum = "0.26"
-strum_macros = "0.26"
+strum = "0.27.2"
+strum_macros = "0.27.2"
 subtle-encoding = "0.5"
-syn = "1"
-sysinfo = "0.33.0"
+syn = "2"
+sysinfo = "0.37.0"
 tap = "1.0.1"
 tar = "0.4.44"
+test-with = { version = "0.15.4", default-features = false }
 tempfile = "3.20"
 thiserror = "2.0"
 time = "0.3.41"
-tokio = "1.45"
+tls_codec = "0.4.1"
+tokio = "1.47"
 tokio-postgres = "0.7"
 tokio-stream = "0.1.17"
 tokio-test = "0.4.4"
@@ -342,8 +364,10 @@ tracing-opentelemetry = "0.19.0"
 tracing-subscriber = "0.3.19"
 tracing-tree = "0.2.2"
 tracing-indicatif = "0.3.9"
+tracing-test = "0.2.5"
 ts-rs = "10.1.0"
 tungstenite = { version = "0.20.1", default-features = false }
+typed-builder = "0.23.0"
 uniffi = "0.29.2"
 uniffi_build = "0.29.0"
 url = "2.5"
@@ -352,6 +376,7 @@ utoipa-swagger-ui = "8.1"
 utoipauto = "0.2"
 uuid = "*"
 vergen = { version = "=8.3.1", default-features = false }
+vergen-gitcl = { version = "1.0.8", default-features = false }
 walkdir = "2"
 x25519-dalek = "2.0.0"
 zeroize = "1.7.0"
@@ -391,18 +416,19 @@ prost = { version = "0.13", default-features = false }
 # wasm-related dependencies
 gloo-utils = "0.2.0"
 gloo-net = "0.6.0"
+gloo-timers = "0.3.0"

 indexed_db_futures = "0.6.4"
 js-sys = "0.3.76"
 serde-wasm-bindgen = "0.6.5"
 tsify = "0.4.5"
+tokio_with_wasm = { version = "0.8.7" }
 wasm-bindgen = "0.2.99"
 wasm-bindgen-futures = "0.4.49"
 wasm-bindgen-test = "0.3.49"
 wasmtimer = "0.4.1"
 web-sys = "0.3.76"

-
 # for local development:
 #[patch.crates-io]
 #sphinx-packet = { path = "../sphinx" }
@@ -434,7 +460,15 @@ opt-level = 'z'
 # lto = true
 opt-level = 'z'

+[workspace.lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tokio_unstable)'] }
+
 [workspace.lints.clippy]
+suspicious = "deny"
+complexity = "deny"
+perf = "deny"
+style = "deny"
+
 unwrap_used = "deny"
 expect_used = "deny"
 todo = "deny"
@@ -109,7 +109,7 @@ sdk-wasm-build:
 	$(MAKE) -C wasm/node-tester
 	$(MAKE) -C wasm/mix-fetch
 	$(MAKE) -C wasm/zknym-lib
-	#$(MAKE) -C wasm/full-nym-wasm
+	# $(MAKE) -C wasm/full-nym-wasm

 # run this from npm/yarn to ensure tools are in the path, e.g. yarn build:sdk from root of repo
 sdk-typescript-build:
@@ -154,6 +154,7 @@ CONTRACTS_OUT_DIR = contracts/artifacts
 #
 COSMWASM_OPTIMIZER_IMAGE ?= cosmwasm/optimizer:0.17.0
 COSMWASM_OPTIMIZER_PLATFORM ?= linux/amd64
+COSMWASM_CHECK_IMAGE ?= rust:1.88

 # Ensure clean build environment and run the optimizer
 optimize-contracts:
@@ -179,6 +180,13 @@ optimize-contracts:
 	# Cleanup temporary artefacts directory
 	@rm -rf artifacts 2>/dev/null || true

+# Check artifacts with cosmwasm-check inside the optimizer image
+docker-check-contracts:
+	@docker run --rm --platform $(COSMWASM_OPTIMIZER_PLATFORM) \
+	  -v $(CURDIR):/code --workdir /code \
+	  --entrypoint /bin/sh \
+	  $(COSMWASM_CHECK_IMAGE) -lc 'apt-get update && apt-get install -y --no-install-recommends llvm-dev libclang-dev pkg-config && export PATH="/usr/local/cargo/bin:/usr/local/rustup/bin:$$PATH" && cargo install cosmwasm-check --locked && WASMER_ENGINE=universal WASMER_COMPILER=singlepass cosmwasm-check contracts/artifacts/*.wasm'
+
 wasm-opt-contracts:
 	@for WASM in $(WASM_CONTRACT_DIR)/*.wasm; do \
 	  echo "Running wasm-opt on $$WASM"; \
@@ -1,10 +1,10 @@
 [package]
 name = "nym-client"
-version = "1.1.58"
+version = "1.1.66"
 authors = ["Dave Hrycyszyn <futurechimp@users.noreply.github.com>", "Jędrzej Stuczyński <andrew@nymtech.net>"]
 description = "Implementation of the Nym Client"
 edition = "2021"
-rust-version = "1.70"
+rust-version = "1.85"
 license.workspace = true

 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -11,7 +11,7 @@ use nym_client_core::client::base_client::{
    BaseClientBuilder, ClientInput, ClientOutput, ClientState,
 };
 use nym_sphinx::params::PacketType;
-use nym_task::TaskHandle;
+use nym_task::ShutdownManager;
 use nym_validator_client::QueryHttpRpcNyxdClient;
 use std::error::Error;
 use std::path::PathBuf;
@@ -29,6 +29,8 @@ pub struct SocketClient {

    /// Optional path to a .json file containing standalone network details.
    custom_mixnet: Option<PathBuf>,
+
+    shutdown_manager: ShutdownManager,
 }

 impl SocketClient {
@@ -40,6 +42,7 @@ impl SocketClient {
        SocketClient {
            config,
            custom_mixnet,
+            shutdown_manager: Default::default(),
        }
    }

@@ -49,7 +52,7 @@ impl SocketClient {
        client_output: ClientOutput,
        client_state: ClientState,
        self_address: &Recipient,
-        task_client: nym_task::TaskClient,
+        shutdown_token: nym_task::ShutdownToken,
        packet_type: PacketType,
    ) {
        info!("Starting websocket listener...");
@@ -57,6 +60,7 @@ impl SocketClient {
        let ClientInput {
            connection_command_sender,
            input_sender,
+            ..
        } = client_input;

        let ClientOutput {
@@ -77,24 +81,24 @@ impl SocketClient {
            shared_lane_queue_lengths,
            reply_controller_sender,
            Some(packet_type),
-            task_client.fork("websocket_handler"),
+            shutdown_token.clone(),
        );

        websocket::Listener::new(
            config.socket.host,
            config.socket.listening_port,
-            task_client.with_suffix("websocket_listener"),
+            shutdown_token.child_token(),
        )
        .start(websocket_handler);
    }

    /// blocking version of `start_socket` method. Will run forever (or until SIGINT is sent)
    pub async fn run_socket_forever(self) -> Result<(), Box<dyn Error + Send + Sync>> {
-        let shutdown = self.start_socket().await?;
+        let mut shutdown = self.start_socket().await?;

-        let res = shutdown.wait_for_shutdown().await;
+        shutdown.run_until_shutdown().await;
        log::info!("Stopping nym-client");
-        res
+        Ok(())
    }

    async fn initialise_storage(&self) -> Result<OnDiskPersistent, ClientError> {
@@ -111,7 +115,7 @@ impl SocketClient {
        let dkg_query_client = if self.config.base.client.disabled_credentials_mode {
            None
        } else {
-            Some(default_query_dkg_client_from_config(&self.config.base))
+            Some(default_query_dkg_client_from_config(&self.config.base)?)
        };

        let storage = self.initialise_storage().await?;
@@ -119,6 +123,7 @@ impl SocketClient {

        let mut base_client =
            BaseClientBuilder::new(self.config().base(), storage, dkg_query_client)
+                .with_shutdown(self.shutdown_manager.shutdown_tracker_owned())
                .with_user_agent(user_agent);

        if let Some(custom_mixnet) = &self.custom_mixnet {
@@ -128,7 +133,7 @@ impl SocketClient {
        Ok(base_client)
    }

-    pub async fn start_socket(self) -> Result<TaskHandle, ClientError> {
+    pub async fn start_socket(self) -> Result<ShutdownManager, ClientError> {
        if !self.config.socket.socket_type.is_websocket() {
            return Err(ClientError::InvalidSocketMode);
        }
@@ -147,13 +152,13 @@ impl SocketClient {
            client_output,
            client_state,
            &self_address,
-            started_client.task_handle.get_handle(),
+            self.shutdown_manager.child_shutdown_token(),
            packet_type,
        );

        info!("Client startup finished!");
        info!("The address of this client is: {self_address}");

-        Ok(started_client.task_handle)
+        Ok(self.shutdown_manager)
    }
 }
@@ -19,7 +19,7 @@ use nym_sphinx::receiver::ReconstructedMessage;
 use nym_task::connections::{
    ConnectionCommand, ConnectionCommandSender, ConnectionId, LaneQueueLengths, TransmissionLane,
 };
-use nym_task::TaskClient;
+use nym_task::ShutdownToken;
 use std::time::Duration;
 use tokio::net::TcpStream;
 use tokio::time::Instant;
@@ -44,7 +44,7 @@ pub(crate) struct HandlerBuilder {
    lane_queue_lengths: LaneQueueLengths,
    reply_controller_sender: ReplyControllerSender,
    packet_type: Option<PacketType>,
-    task_client: TaskClient,
+    shutdown_token: ShutdownToken,
 }

 impl HandlerBuilder {
@@ -57,7 +57,7 @@ impl HandlerBuilder {
        lane_queue_lengths: LaneQueueLengths,
        reply_controller_sender: ReplyControllerSender,
        packet_type: Option<PacketType>,
-        task_client: TaskClient,
+        shutdown_token: ShutdownToken,
    ) -> Self {
        Self {
            msg_input,
@@ -67,14 +67,13 @@ impl HandlerBuilder {
            lane_queue_lengths,
            reply_controller_sender,
            packet_type,
-            task_client,
+            shutdown_token,
        }
    }

    // TODO: make sure we only ever have one active handler
    pub fn create_active_handler(&self) -> Handler {
-        let mut task_client = self.task_client.fork("active_handler");
-        task_client.disarm();
+        let shutdown_token = self.shutdown_token.clone();
        Handler {
            msg_input: self.msg_input.clone(),
            client_connection_tx: self.client_connection_tx.clone(),
@@ -85,7 +84,7 @@ impl HandlerBuilder {
            lane_queue_lengths: self.lane_queue_lengths.clone(),
            reply_controller_sender: self.reply_controller_sender.clone(),
            packet_type: self.packet_type,
-            task_client,
+            shutdown_token,
        }
    }
 }
@@ -100,19 +99,14 @@ pub(crate) struct Handler {
    lane_queue_lengths: LaneQueueLengths,
    reply_controller_sender: ReplyControllerSender,
    packet_type: Option<PacketType>,
-    task_client: TaskClient,
+    shutdown_token: ShutdownToken,
 }

 impl Drop for Handler {
    fn drop(&mut self) {
-        if let Err(err) = self
+        let _ = self
            .buffer_requester
-            .unbounded_send(ReceivedBufferMessage::ReceiverDisconnect)
-        {
-            if !self.task_client.is_shutdown_poll() {
-                error!("failed to disconnect the receiver from the buffer: {err}");
-            }
-        }
+            .unbounded_send(ReceivedBufferMessage::ReceiverDisconnect);
    }
 }

@@ -142,7 +136,7 @@ impl Handler {
        {
            Ok(length) => length,
            Err(err) => {
-                if !self.task_client.is_shutdown_poll() {
+                if !self.shutdown_token.is_cancelled() {
                    error!(
                        "Failed to get reply queue length for connection {connection_id}: {err}"
                    );
@@ -192,7 +186,7 @@ impl Handler {
        // the ack control is now responsible for chunking, etc.
        let input_msg = InputMessage::new_regular(recipient, message, lane, self.packet_type);
        if let Err(err) = self.msg_input.send(input_msg).await {
-            if !self.task_client.is_shutdown_poll() {
+            if !self.shutdown_token.is_cancelled() {
                error!("Failed to send message to the input buffer: {err}");
            }
        }
@@ -225,7 +219,7 @@ impl Handler {
        let input_msg =
            InputMessage::new_anonymous(recipient, message, reply_surbs, lane, self.packet_type);
        if let Err(err) = self.msg_input.send(input_msg).await {
-            if !self.task_client.is_shutdown_poll() {
+            if !self.shutdown_token.is_cancelled() {
                error!("Failed to send anonymous message to the input buffer: {err}");
            }
        }
@@ -253,7 +247,7 @@ impl Handler {

        let input_msg = InputMessage::new_reply(recipient_tag, message, lane, self.packet_type);
        if let Err(err) = self.msg_input.send(input_msg).await {
-            if !self.task_client.is_shutdown_poll() {
+            if !self.shutdown_token.is_cancelled() {
                error!("Failed to send reply message to the input buffer: {err}");
            }
        }
@@ -275,7 +269,7 @@ impl Handler {
            .client_connection_tx
            .unbounded_send(ConnectionCommand::Close(connection_id))
        {
-            if !self.task_client.is_shutdown_poll() {
+            if !self.shutdown_token.is_cancelled() {
                error!("Failed to send close connection command: {err}");
            }
        }
@@ -394,11 +388,14 @@ impl Handler {
    }

    async fn listen_for_requests(&mut self, mut msg_receiver: ReconstructedMessagesReceiver) {
-        let mut task_client = self.task_client.fork("select");
-        task_client.disarm();
+        let shutdown_token = self.shutdown_token.clone();

-        while !task_client.is_shutdown() {
+        loop {
            tokio::select! {
+                  _ = shutdown_token.cancelled() => {
+                    log::trace!("Websocket handler: Received shutdown");
+                    break;
+                }
                // we can either get a client request from the websocket
                socket_msg = self.next_websocket_request() => {
                    if socket_msg.is_none() {
@@ -436,9 +433,6 @@ impl Handler {
                        break;
                    }
                }
-                _ = task_client.recv() => {
-                    log::trace!("Websocket handler: Received shutdown");
-                }
            }
        }
        log::debug!("Websocket handler: Exiting");
@@ -464,7 +458,7 @@ impl Handler {
                    reconstructed_sender,
                ))
        {
-            if !self.task_client.is_shutdown_poll() {
+            if !self.shutdown_token.is_cancelled() {
                error!("failed to announce the receiver to the buffer: {err}");
            }
        }
@@ -3,7 +3,7 @@

 use super::handler::HandlerBuilder;
 use log::*;
-use nym_task::TaskClient;
+use nym_task::ShutdownToken;
 use std::net::IpAddr;
 use std::{net::SocketAddr, process, sync::Arc};
 use tokio::io::AsyncWriteExt;
@@ -23,15 +23,15 @@ impl State {
 pub(crate) struct Listener {
    address: SocketAddr,
    state: State,
-    task_client: TaskClient,
+    shutdown_token: ShutdownToken,
 }

 impl Listener {
-    pub(crate) fn new(host: IpAddr, port: u16, task_client: TaskClient) -> Self {
+    pub(crate) fn new(host: IpAddr, port: u16, shutdown_token: ShutdownToken) -> Self {
        Listener {
            address: SocketAddr::new(host, port),
            state: State::AwaitingConnection,
-            task_client,
+            shutdown_token,
        }
    }

@@ -46,11 +46,11 @@ impl Listener {

        let notify = Arc::new(Notify::new());

-        while !self.task_client.is_shutdown() {
+        while !self.shutdown_token.is_cancelled() {
            tokio::select! {
                // When the handler finishes we check if shutdown is signalled
                _ = notify.notified() => {
-                    if self.task_client.is_shutdown() {
+                    if self.shutdown_token.is_cancelled() {
                        log::trace!("Websocket listener: detected shutdown after connection closed");
                        break;
                    }
@@ -59,7 +59,7 @@ impl Listener {
                }
                // ... but when there is no connected client at the time of shutdown being
                // signalled, we handle it here.
-                _ = self.task_client.recv() => {
+                _ = self.shutdown_token.cancelled() => {
                    if !self.state.is_connected() {
                        log::trace!("Not connected: shutting down");
                        break;
@@ -1,10 +1,10 @@
 [package]
 name = "nym-socks5-client"
-version = "1.1.58"
+version = "1.1.66"
 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"
-rust-version = "1.70"
+rust-version = "1.85"
 license.workspace = true

 [dependencies]
@@ -1,8 +1,8 @@
 // Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use futures::channel::mpsc;
 use futures::StreamExt;
+use futures::channel::mpsc;
 use notify::event::{DataChange, MetadataKind, ModifyKind};
 use notify::{Config, Event, EventKind, RecommendedWatcher, RecursiveMode, Watcher};
 use std::collections::HashMap;
@@ -96,10 +96,10 @@ impl AsyncFileWatcher {
        // when testing I was consistently getting two `Modify(Data(Any))` events in quick succession
        // (probably to modify content and metadata).
        // we really only want to propagate one of them
-        if let Some(previous) = self.last_received.get(&event.kind) {
-            if now.duration_since(*previous) < self.tick_duration {
-                return false;
-            }
+        if let Some(previous) = self.last_received.get(&event.kind)
+            && now.duration_since(*previous) < self.tick_duration
+        {
+            return false;
        }

        let Some(filters) = &self.filters else {
@@ -13,7 +13,10 @@ base64 = { workspace = true }
 bincode = { workspace = true }
 rand = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
+semver = { workspace = true }
+strum_macros = { workspace = true }
 thiserror = { workspace = true }
+tracing = { workspace = true }

 nym-credentials-interface = { path = "../credentials-interface" }
 nym-crypto = { path = "../crypto", features = ["asymmetric"] }
@@ -27,7 +30,13 @@ hmac = { workspace = true, optional = true }
 sha2 = { workspace = true, optional = true }
 x25519-dalek = { workspace = true, features = ["static_secrets"] }

+[dev-dependencies]
+nym-test-utils = { path = "../test-utils" }
+
 [features]
 default = ["verify"]
 # this is moved to a separate feature as we really need clients to import it (especially, *cough*, wasm)
 verify = ["hmac", "sha2"]
+
+[lints]
+workspace = true
@@ -0,0 +1,372 @@
+// Copyright 2025 Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: GPL-3.0-only
+
+use nym_sphinx::addressing::Recipient;
+use nym_wireguard_types::PeerPublicKey;
+
+use crate::{
+    AuthenticatorVersion, Error,
+    traits::{
+        FinalMessage, InitMessage, QueryBandwidthMessage, TopUpMessage, UpgradeModeMessage,
+        Versionable,
+    },
+    v2, v3, v4, v5, v6,
+};
+
+// This is very redundant with AuthenticatorRequest and I reckon they could be smooshed.
+// It is a bit out of scope for me at the moment though
+#[derive(Debug)]
+pub enum ClientMessage {
+    Initial(Box<dyn InitMessage + Send + Sync + 'static>),
+    Final(Box<dyn FinalMessage + Send + Sync + 'static>),
+    Query(Box<dyn QueryBandwidthMessage + Send + Sync + 'static>),
+    TopUp(Box<dyn TopUpMessage + Send + Sync + 'static>),
+    UpgradeModeCheck(Box<dyn UpgradeModeMessage + Send + Sync + 'static>),
+}
+
+pub struct SerialisedRequest {
+    pub bytes: Vec<u8>,
+    pub request_id: u64,
+}
+
+impl SerialisedRequest {
+    pub fn new(bytes: Vec<u8>, request_id: u64) -> Self {
+        Self { bytes, request_id }
+    }
+}
+
+impl ClientMessage {
+    fn serialise_v1(&self) -> Result<SerialisedRequest, Error> {
+        Err(Error::UnsupportedVersion)
+    }
+
+    fn serialise_v2(&self, reply_to: Recipient) -> Result<SerialisedRequest, Error> {
+        use v2::{
+            registration::{ClientMac, FinalMessage, GatewayClient, InitMessage},
+            request::AuthenticatorRequest,
+        };
+        match self {
+            ClientMessage::Initial(init_message) => {
+                let (req, id) = AuthenticatorRequest::new_initial_request(
+                    InitMessage {
+                        pub_key: init_message.pub_key(),
+                    },
+                    reply_to,
+                );
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::Final(final_message) => {
+                let (req, id) = AuthenticatorRequest::new_final_request(
+                    FinalMessage {
+                        gateway_client: GatewayClient {
+                            pub_key: final_message.gateway_client_pub_key(),
+                            private_ip: final_message
+                                .gateway_client_ipv4()
+                                .ok_or(Error::UnsupportedMessage)?
+                                .into(),
+                            mac: ClientMac::new(final_message.gateway_client_mac()),
+                        },
+                        credential: final_message
+                            .credential()
+                            .and_then(|c| c.credential.into_zk_nym())
+                            .map(|c| *c),
+                    },
+                    reply_to,
+                );
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::Query(query_message) => {
+                let (req, id) =
+                    AuthenticatorRequest::new_query_request(query_message.pub_key(), reply_to);
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            _ => Err(Error::UnsupportedMessage),
+        }
+    }
+
+    fn serialise_v3(&self, reply_to: Recipient) -> Result<SerialisedRequest, Error> {
+        use v3::{
+            registration::{ClientMac, FinalMessage, GatewayClient, InitMessage},
+            request::AuthenticatorRequest,
+            topup::TopUpMessage,
+        };
+        match self {
+            ClientMessage::Initial(init_message) => {
+                let (req, id) = AuthenticatorRequest::new_initial_request(
+                    InitMessage {
+                        pub_key: init_message.pub_key(),
+                    },
+                    reply_to,
+                );
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::Final(final_message) => {
+                let (req, id) = AuthenticatorRequest::new_final_request(
+                    FinalMessage {
+                        gateway_client: GatewayClient {
+                            pub_key: final_message.gateway_client_pub_key(),
+                            private_ip: final_message
+                                .gateway_client_ipv4()
+                                .ok_or(Error::UnsupportedMessage)?
+                                .into(),
+                            mac: ClientMac::new(final_message.gateway_client_mac()),
+                        },
+                        credential: final_message
+                            .credential()
+                            .and_then(|c| c.credential.into_zk_nym())
+                            .map(|c| *c),
+                    },
+                    reply_to,
+                );
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::Query(query_message) => {
+                let (req, id) =
+                    AuthenticatorRequest::new_query_request(query_message.pub_key(), reply_to);
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::TopUp(top_up_message) => {
+                let (req, id) = AuthenticatorRequest::new_topup_request(
+                    TopUpMessage {
+                        pub_key: top_up_message.pub_key(),
+                        credential: top_up_message.credential(),
+                    },
+                    reply_to,
+                );
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            _ => Err(Error::UnsupportedMessage),
+        }
+    }
+
+    fn serialise_v4(&self, reply_to: Recipient) -> Result<SerialisedRequest, Error> {
+        use v4::{
+            registration::{ClientMac, FinalMessage, GatewayClient, InitMessage, IpPair},
+            request::AuthenticatorRequest,
+            topup::TopUpMessage,
+        };
+        match self {
+            ClientMessage::Initial(init_message) => {
+                let (req, id) = AuthenticatorRequest::new_initial_request(
+                    InitMessage {
+                        pub_key: init_message.pub_key(),
+                    },
+                    reply_to,
+                );
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::Final(final_message) => {
+                let (req, id) = AuthenticatorRequest::new_final_request(
+                    FinalMessage {
+                        gateway_client: GatewayClient {
+                            pub_key: final_message.gateway_client_pub_key(),
+                            private_ips: IpPair {
+                                ipv4: final_message
+                                    .gateway_client_ipv4()
+                                    .ok_or(Error::UnsupportedMessage)?,
+                                ipv6: final_message
+                                    .gateway_client_ipv6()
+                                    .ok_or(Error::UnsupportedMessage)?,
+                            },
+                            mac: ClientMac::new(final_message.gateway_client_mac()),
+                        },
+                        credential: final_message
+                            .credential()
+                            .and_then(|c| c.credential.into_zk_nym())
+                            .map(|c| *c),
+                    },
+                    reply_to,
+                );
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::Query(query_message) => {
+                let (req, id) =
+                    AuthenticatorRequest::new_query_request(query_message.pub_key(), reply_to);
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::TopUp(top_up_message) => {
+                let (req, id) = AuthenticatorRequest::new_topup_request(
+                    TopUpMessage {
+                        pub_key: top_up_message.pub_key(),
+                        credential: top_up_message.credential(),
+                    },
+                    reply_to,
+                );
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            _ => Err(Error::UnsupportedMessage),
+        }
+    }
+
+    fn serialise_v5(&self) -> Result<SerialisedRequest, Error> {
+        use v5::{
+            registration::{ClientMac, FinalMessage, GatewayClient, InitMessage, IpPair},
+            request::AuthenticatorRequest,
+            topup::TopUpMessage,
+        };
+        match self {
+            ClientMessage::Initial(init_message) => {
+                let (req, id) = AuthenticatorRequest::new_initial_request(InitMessage {
+                    pub_key: init_message.pub_key(),
+                });
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::Final(final_message) => {
+                let (req, id) = AuthenticatorRequest::new_final_request(FinalMessage {
+                    gateway_client: GatewayClient {
+                        pub_key: final_message.gateway_client_pub_key(),
+                        private_ips: IpPair {
+                            ipv4: final_message
+                                .gateway_client_ipv4()
+                                .ok_or(Error::UnsupportedMessage)?,
+                            ipv6: final_message
+                                .gateway_client_ipv6()
+                                .ok_or(Error::UnsupportedMessage)?,
+                        },
+                        mac: ClientMac::new(final_message.gateway_client_mac()),
+                    },
+                    credential: final_message
+                        .credential()
+                        .and_then(|c| c.credential.into_zk_nym())
+                        .map(|c| *c),
+                });
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::Query(query_message) => {
+                let (req, id) = AuthenticatorRequest::new_query_request(query_message.pub_key());
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::TopUp(top_up_message) => {
+                let (req, id) = AuthenticatorRequest::new_topup_request(TopUpMessage {
+                    pub_key: top_up_message.pub_key(),
+                    credential: top_up_message.credential(),
+                });
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            _ => Err(Error::UnsupportedMessage),
+        }
+    }
+
+    fn serialise_v6(&self) -> Result<SerialisedRequest, Error> {
+        use v6::{
+            registration::{ClientMac, FinalMessage, GatewayClient, InitMessage, IpPair},
+            request::AuthenticatorRequest,
+            topup::TopUpMessage,
+            upgrade_mode_check::UpgradeModeCheckRequest,
+        };
+        match self {
+            ClientMessage::Initial(init_message) => {
+                let (req, id) = AuthenticatorRequest::new_initial_request(InitMessage {
+                    pub_key: init_message.pub_key(),
+                });
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::Final(final_message) => {
+                let (req, id) = AuthenticatorRequest::new_final_request(FinalMessage {
+                    gateway_client: GatewayClient {
+                        pub_key: final_message.gateway_client_pub_key(),
+                        private_ips: IpPair {
+                            ipv4: final_message
+                                .gateway_client_ipv4()
+                                .ok_or(Error::UnsupportedMessage)?,
+                            ipv6: final_message
+                                .gateway_client_ipv6()
+                                .ok_or(Error::UnsupportedMessage)?,
+                        },
+                        mac: ClientMac::new(final_message.gateway_client_mac()),
+                    },
+                    credential: final_message.credential(),
+                });
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::Query(query_message) => {
+                let (req, id) = AuthenticatorRequest::new_query_request(query_message.pub_key());
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::TopUp(top_up_message) => {
+                let (req, id) = AuthenticatorRequest::new_topup_request(TopUpMessage {
+                    pub_key: top_up_message.pub_key(),
+                    credential: top_up_message.credential(),
+                });
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+            ClientMessage::UpgradeModeCheck(upgrade_mode_check) => {
+                // currently JWT is the only emergency credential option
+                let Some(upgrade_mode_jwt) =
+                    upgrade_mode_check.upgrade_mode_global_attestation_jwt()
+                else {
+                    return Err(Error::conversion(
+                        "no valid known upgrade mode check variants",
+                    ));
+                };
+                let msg = UpgradeModeCheckRequest::UpgradeModeJwt {
+                    token: upgrade_mode_jwt,
+                };
+
+                let (req, id) = AuthenticatorRequest::new_upgrade_mode_check_request(msg);
+                Ok(SerialisedRequest::new(req.to_bytes()?, id))
+            }
+        }
+    }
+}
+
+impl ClientMessage {
+    // check if message is wasteful e.g. contains a credential
+    pub fn is_wasteful(&self) -> bool {
+        match self {
+            Self::Final(msg) => msg.credential().is_some(),
+            Self::TopUp(_) => true,
+            Self::Initial(_) | Self::Query(_) | Self::UpgradeModeCheck(_) => false,
+        }
+    }
+
+    fn version(&self) -> AuthenticatorVersion {
+        match self {
+            ClientMessage::Initial(msg) => msg.version(),
+            ClientMessage::Final(msg) => msg.version(),
+            ClientMessage::Query(msg) => msg.version(),
+            ClientMessage::TopUp(msg) => msg.version(),
+            ClientMessage::UpgradeModeCheck(msg) => msg.version(),
+        }
+    }
+
+    pub fn bytes(&self, reply_to: Recipient) -> Result<SerialisedRequest, Error> {
+        match self.version() {
+            AuthenticatorVersion::V1 => self.serialise_v1(),
+            AuthenticatorVersion::V2 => self.serialise_v2(reply_to),
+            AuthenticatorVersion::V3 => self.serialise_v3(reply_to),
+            AuthenticatorVersion::V4 => self.serialise_v4(reply_to),
+            AuthenticatorVersion::V5 => self.serialise_v5(),
+            AuthenticatorVersion::V6 => self.serialise_v6(),
+            AuthenticatorVersion::UNKNOWN => Err(Error::UnknownVersion),
+        }
+    }
+
+    pub fn use_surbs(&self) -> bool {
+        use AuthenticatorVersion::*;
+        match self.version() {
+            V1 | V2 | V3 | V4 => false,
+            V5 | V6 => true,
+            UNKNOWN => true,
+        }
+    }
+}
+
+// Same comment as above struct
+#[derive(Debug)]
+pub struct QueryMessageImpl {
+    pub pub_key: PeerPublicKey,
+    pub version: AuthenticatorVersion,
+}
+
+impl Versionable for QueryMessageImpl {
+    fn version(&self) -> AuthenticatorVersion {
+        self.version
+    }
+}
+
+impl QueryBandwidthMessage for QueryMessageImpl {
+    fn pub_key(&self) -> PeerPublicKey {
+        self.pub_key
+    }
+}
@@ -1,6 +1,7 @@
 // Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+use std::fmt::Display;
 use thiserror::Error;

 #[derive(Debug, Error)]
@@ -23,6 +24,27 @@ pub enum Error {
    #[error("conversion: {0}")]
    Conversion(String),

-    #[error("failed to serialize response packet: {source}")]
-    FailedToSerializeResponsePacket { source: Box<bincode::ErrorKind> },
+    // TODO add version number for debugging
+    #[error("unknown version number")]
+    UnknownVersion,
+
+    // TODO add version number for debugging
+    #[error("unsupported request version")]
+    UnsupportedVersion,
+
+    #[error("gateway doesn't support this type of message")]
+    UnsupportedMessage,
+
+    #[error(transparent)]
+    Bincode(#[from] bincode::Error),
+}
+
+impl Error {
+    pub fn conversion(msg: impl Into<String>) -> Self {
+        Error::Conversion(msg.into())
+    }
+
+    pub fn conversion_display(msg: impl Display) -> Self {
+        Error::Conversion(msg.to_string())
+    }
 }
@@ -1,20 +1,27 @@
 // Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+pub mod client_message;
+pub mod models;
+pub mod request;
+pub mod response;
 pub mod traits;
 pub mod v1;
 pub mod v2;
 pub mod v3;
 pub mod v4;
 pub mod v5;
+pub mod v6;

 mod error;
 mod util;
+mod version;

 pub use error::Error;
-pub use v5 as latest;
+pub use v6 as latest;
+pub use version::AuthenticatorVersion;

-pub const CURRENT_VERSION: u8 = 5;
+pub const CURRENT_VERSION: u8 = latest::VERSION;

 fn make_bincode_serializer() -> impl bincode::Options {
    use bincode::Options;
@@ -0,0 +1,58 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use nym_credentials_interface::{
+    BandwidthCredential, CredentialSpendingData, TicketType, UnknownTicketType,
+};
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone, Copy, PartialEq)]
+pub enum CurrentUpgradeModeStatus {
+    Enabled,
+    Disabled,
+    // everything pre-v6
+    Unknown,
+}
+
+impl CurrentUpgradeModeStatus {
+    pub fn is_enabled(&self) -> bool {
+        matches!(self, CurrentUpgradeModeStatus::Enabled)
+    }
+}
+
+impl From<bool> for CurrentUpgradeModeStatus {
+    fn from(value: bool) -> Self {
+        if value {
+            CurrentUpgradeModeStatus::Enabled
+        } else {
+            CurrentUpgradeModeStatus::Disabled
+        }
+    }
+}
+
+impl From<CurrentUpgradeModeStatus> for Option<bool> {
+    fn from(value: CurrentUpgradeModeStatus) -> Self {
+        match value {
+            CurrentUpgradeModeStatus::Enabled => Some(true),
+            CurrentUpgradeModeStatus::Disabled => Some(false),
+            CurrentUpgradeModeStatus::Unknown => None,
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
+pub struct BandwidthClaim {
+    pub credential: BandwidthCredential,
+    pub kind: TicketType,
+}
+
+impl TryFrom<CredentialSpendingData> for BandwidthClaim {
+    type Error = UnknownTicketType;
+
+    fn try_from(credential: CredentialSpendingData) -> Result<Self, Self::Error> {
+        Ok(BandwidthClaim {
+            kind: TicketType::try_from_encoded(credential.payment.t_type)?,
+            credential: BandwidthCredential::from(credential),
+        })
+    }
+}
@@ -0,0 +1,253 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use nym_service_provider_requests_common::{Protocol, ServiceProviderType};
+use nym_sphinx::addressing::Recipient;
+
+use crate::traits::{
+    FinalMessage, InitMessage, QueryBandwidthMessage, TopUpMessage, UpgradeModeMessage,
+};
+use crate::{v1, v2, v3, v4, v5, v6};
+
+#[derive(Debug)]
+pub enum AuthenticatorRequest {
+    Initial {
+        msg: Box<dyn InitMessage + Send + Sync + 'static>,
+        protocol: Protocol,
+        reply_to: Option<Recipient>,
+        request_id: u64,
+    },
+    Final {
+        msg: Box<dyn FinalMessage + Send + Sync + 'static>,
+        protocol: Protocol,
+        reply_to: Option<Recipient>,
+        request_id: u64,
+    },
+    QueryBandwidth {
+        msg: Box<dyn QueryBandwidthMessage + Send + Sync + 'static>,
+        protocol: Protocol,
+        reply_to: Option<Recipient>,
+        request_id: u64,
+    },
+    TopUpBandwidth {
+        msg: Box<dyn TopUpMessage + Send + Sync + 'static>,
+        protocol: Protocol,
+        reply_to: Option<Recipient>,
+        request_id: u64,
+    },
+    CheckUpgradeMode {
+        msg: Box<dyn UpgradeModeMessage + Send + Sync + 'static>,
+        protocol: Protocol,
+        request_id: u64,
+    },
+}
+
+impl From<v1::request::AuthenticatorRequest> for AuthenticatorRequest {
+    fn from(value: v1::request::AuthenticatorRequest) -> Self {
+        match value.data {
+            v1::request::AuthenticatorRequestData::Initial(init_message) => Self::Initial {
+                msg: Box::new(init_message),
+                protocol: Protocol {
+                    version: value.version,
+                    service_provider_type: ServiceProviderType::Authenticator,
+                },
+                reply_to: Some(value.reply_to),
+                request_id: value.request_id,
+            },
+            v1::request::AuthenticatorRequestData::Final(gateway_client) => Self::Final {
+                msg: Box::new(gateway_client),
+                protocol: Protocol {
+                    version: value.version,
+                    service_provider_type: ServiceProviderType::Authenticator,
+                },
+                reply_to: Some(value.reply_to),
+                request_id: value.request_id,
+            },
+            v1::request::AuthenticatorRequestData::QueryBandwidth(peer_public_key) => {
+                Self::QueryBandwidth {
+                    msg: Box::new(peer_public_key),
+                    protocol: Protocol {
+                        version: value.version,
+                        service_provider_type: ServiceProviderType::Authenticator,
+                    },
+                    reply_to: Some(value.reply_to),
+                    request_id: value.request_id,
+                }
+            }
+        }
+    }
+}
+
+impl From<v2::request::AuthenticatorRequest> for AuthenticatorRequest {
+    fn from(value: v2::request::AuthenticatorRequest) -> Self {
+        match value.data {
+            v2::request::AuthenticatorRequestData::Initial(init_message) => Self::Initial {
+                msg: Box::new(init_message),
+                protocol: value.protocol,
+                reply_to: Some(value.reply_to),
+                request_id: value.request_id,
+            },
+            v2::request::AuthenticatorRequestData::Final(final_message) => Self::Final {
+                msg: final_message,
+                protocol: value.protocol,
+                reply_to: Some(value.reply_to),
+                request_id: value.request_id,
+            },
+            v2::request::AuthenticatorRequestData::QueryBandwidth(peer_public_key) => {
+                Self::QueryBandwidth {
+                    msg: Box::new(peer_public_key),
+                    protocol: value.protocol,
+                    reply_to: Some(value.reply_to),
+                    request_id: value.request_id,
+                }
+            }
+        }
+    }
+}
+
+impl From<v3::request::AuthenticatorRequest> for AuthenticatorRequest {
+    fn from(value: v3::request::AuthenticatorRequest) -> Self {
+        match value.data {
+            v3::request::AuthenticatorRequestData::Initial(init_message) => Self::Initial {
+                msg: Box::new(init_message),
+                protocol: value.protocol,
+                reply_to: Some(value.reply_to),
+                request_id: value.request_id,
+            },
+            v3::request::AuthenticatorRequestData::Final(final_message) => Self::Final {
+                msg: final_message,
+                protocol: value.protocol,
+                reply_to: Some(value.reply_to),
+                request_id: value.request_id,
+            },
+            v3::request::AuthenticatorRequestData::QueryBandwidth(peer_public_key) => {
+                Self::QueryBandwidth {
+                    msg: Box::new(peer_public_key),
+                    protocol: value.protocol,
+                    reply_to: Some(value.reply_to),
+                    request_id: value.request_id,
+                }
+            }
+            v3::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message) => {
+                Self::TopUpBandwidth {
+                    msg: top_up_message,
+                    protocol: value.protocol,
+                    reply_to: Some(value.reply_to),
+                    request_id: value.request_id,
+                }
+            }
+        }
+    }
+}
+
+impl From<v4::request::AuthenticatorRequest> for AuthenticatorRequest {
+    fn from(value: v4::request::AuthenticatorRequest) -> Self {
+        match value.data {
+            v4::request::AuthenticatorRequestData::Initial(init_message) => Self::Initial {
+                msg: Box::new(init_message),
+                protocol: value.protocol,
+                reply_to: Some(value.reply_to),
+                request_id: value.request_id,
+            },
+            v4::request::AuthenticatorRequestData::Final(final_message) => Self::Final {
+                msg: final_message,
+                protocol: value.protocol,
+                reply_to: Some(value.reply_to),
+                request_id: value.request_id,
+            },
+            v4::request::AuthenticatorRequestData::QueryBandwidth(peer_public_key) => {
+                Self::QueryBandwidth {
+                    msg: Box::new(peer_public_key),
+                    protocol: value.protocol,
+                    reply_to: Some(value.reply_to),
+                    request_id: value.request_id,
+                }
+            }
+            v4::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message) => {
+                Self::TopUpBandwidth {
+                    msg: top_up_message,
+                    protocol: value.protocol,
+                    reply_to: Some(value.reply_to),
+                    request_id: value.request_id,
+                }
+            }
+        }
+    }
+}
+
+impl From<v5::request::AuthenticatorRequest> for AuthenticatorRequest {
+    fn from(value: v5::request::AuthenticatorRequest) -> Self {
+        match value.data {
+            v5::request::AuthenticatorRequestData::Initial(init_message) => Self::Initial {
+                msg: Box::new(init_message),
+                protocol: value.protocol,
+                reply_to: None,
+                request_id: value.request_id,
+            },
+            v5::request::AuthenticatorRequestData::Final(final_message) => Self::Final {
+                msg: final_message,
+                protocol: value.protocol,
+                reply_to: None,
+                request_id: value.request_id,
+            },
+            v5::request::AuthenticatorRequestData::QueryBandwidth(peer_public_key) => {
+                Self::QueryBandwidth {
+                    msg: Box::new(peer_public_key),
+                    protocol: value.protocol,
+                    reply_to: None,
+                    request_id: value.request_id,
+                }
+            }
+            v5::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message) => {
+                Self::TopUpBandwidth {
+                    msg: top_up_message,
+                    protocol: value.protocol,
+                    reply_to: None,
+                    request_id: value.request_id,
+                }
+            }
+        }
+    }
+}
+
+impl From<v6::request::AuthenticatorRequest> for AuthenticatorRequest {
+    fn from(value: v6::request::AuthenticatorRequest) -> Self {
+        match value.data {
+            v6::request::AuthenticatorRequestData::Initial(init_message) => Self::Initial {
+                msg: Box::new(init_message),
+                protocol: value.protocol,
+                reply_to: None,
+                request_id: value.request_id,
+            },
+            v6::request::AuthenticatorRequestData::Final(final_message) => Self::Final {
+                msg: final_message,
+                protocol: value.protocol,
+                reply_to: None,
+                request_id: value.request_id,
+            },
+            v6::request::AuthenticatorRequestData::QueryBandwidth(peer_public_key) => {
+                Self::QueryBandwidth {
+                    msg: Box::new(peer_public_key),
+                    protocol: value.protocol,
+                    reply_to: None,
+                    request_id: value.request_id,
+                }
+            }
+            v6::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message) => {
+                Self::TopUpBandwidth {
+                    msg: top_up_message,
+                    protocol: value.protocol,
+                    reply_to: None,
+                    request_id: value.request_id,
+                }
+            }
+            v6::request::AuthenticatorRequestData::CheckUpgradeMode(upgrade_mode_check_msg) => {
+                Self::CheckUpgradeMode {
+                    msg: Box::new(upgrade_mode_check_msg),
+                    protocol: value.protocol,
+                    request_id: value.request_id,
+                }
+            }
+        }
+    }
+}
@@ -0,0 +1,153 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::models::CurrentUpgradeModeStatus;
+use crate::traits::{
+    Id, PendingRegistrationResponse, RegisteredResponse, RemainingBandwidthResponse,
+    TopUpBandwidthResponse, UpgradeModeStatus,
+};
+use crate::{v2, v3, v4, v5, v6};
+
+#[derive(Debug)]
+pub enum AuthenticatorResponse {
+    PendingRegistration(Box<dyn PendingRegistrationResponse + Send + Sync + 'static>),
+    Registered(Box<dyn RegisteredResponse + Send + Sync + 'static>),
+    RemainingBandwidth(Box<dyn RemainingBandwidthResponse + Send + Sync + 'static>),
+    TopUpBandwidth(Box<dyn TopUpBandwidthResponse + Send + Sync + 'static>),
+    UpgradeMode(Box<dyn UpgradeModeStatus + Send + Sync + 'static>),
+}
+
+impl UpgradeModeStatus for AuthenticatorResponse {
+    fn upgrade_mode_status(&self) -> CurrentUpgradeModeStatus {
+        match self {
+            AuthenticatorResponse::PendingRegistration(pending_registration_response) => {
+                pending_registration_response.upgrade_mode_status()
+            }
+            AuthenticatorResponse::Registered(registered_response) => {
+                registered_response.upgrade_mode_status()
+            }
+            AuthenticatorResponse::RemainingBandwidth(remaining_bandwidth_response) => {
+                remaining_bandwidth_response.upgrade_mode_status()
+            }
+            AuthenticatorResponse::TopUpBandwidth(top_up_bandwidth_response) => {
+                top_up_bandwidth_response.upgrade_mode_status()
+            }
+            AuthenticatorResponse::UpgradeMode(upgrade_mode_response) => {
+                upgrade_mode_response.upgrade_mode_status()
+            }
+        }
+    }
+}
+
+impl Id for AuthenticatorResponse {
+    fn id(&self) -> u64 {
+        match self {
+            AuthenticatorResponse::PendingRegistration(pending_registration_response) => {
+                pending_registration_response.id()
+            }
+            AuthenticatorResponse::Registered(registered_response) => registered_response.id(),
+            AuthenticatorResponse::RemainingBandwidth(remaining_bandwidth_response) => {
+                remaining_bandwidth_response.id()
+            }
+            AuthenticatorResponse::TopUpBandwidth(top_up_bandwidth_response) => {
+                top_up_bandwidth_response.id()
+            }
+            AuthenticatorResponse::UpgradeMode(upgrade_mode_response) => upgrade_mode_response.id(),
+        }
+    }
+}
+
+impl From<v2::response::AuthenticatorResponse> for AuthenticatorResponse {
+    fn from(value: v2::response::AuthenticatorResponse) -> Self {
+        match value.data {
+            v2::response::AuthenticatorResponseData::PendingRegistration(
+                pending_registration_response,
+            ) => Self::PendingRegistration(Box::new(pending_registration_response)),
+            v2::response::AuthenticatorResponseData::Registered(registered_response) => {
+                Self::Registered(Box::new(registered_response))
+            }
+            v2::response::AuthenticatorResponseData::RemainingBandwidth(
+                remaining_bandwidth_response,
+            ) => Self::RemainingBandwidth(Box::new(remaining_bandwidth_response)),
+        }
+    }
+}
+
+impl From<v3::response::AuthenticatorResponse> for AuthenticatorResponse {
+    fn from(value: v3::response::AuthenticatorResponse) -> Self {
+        match value.data {
+            v3::response::AuthenticatorResponseData::PendingRegistration(
+                pending_registration_response,
+            ) => Self::PendingRegistration(Box::new(pending_registration_response)),
+            v3::response::AuthenticatorResponseData::Registered(registered_response) => {
+                Self::Registered(Box::new(registered_response))
+            }
+            v3::response::AuthenticatorResponseData::RemainingBandwidth(
+                remaining_bandwidth_response,
+            ) => Self::RemainingBandwidth(Box::new(remaining_bandwidth_response)),
+            v3::response::AuthenticatorResponseData::TopUpBandwidth(top_up_bandwidth_response) => {
+                Self::TopUpBandwidth(Box::new(top_up_bandwidth_response))
+            }
+        }
+    }
+}
+
+impl From<v4::response::AuthenticatorResponse> for AuthenticatorResponse {
+    fn from(value: v4::response::AuthenticatorResponse) -> Self {
+        match value.data {
+            v4::response::AuthenticatorResponseData::PendingRegistration(
+                pending_registration_response,
+            ) => Self::PendingRegistration(Box::new(pending_registration_response)),
+            v4::response::AuthenticatorResponseData::Registered(registered_response) => {
+                Self::Registered(Box::new(registered_response))
+            }
+            v4::response::AuthenticatorResponseData::RemainingBandwidth(
+                remaining_bandwidth_response,
+            ) => Self::RemainingBandwidth(Box::new(remaining_bandwidth_response)),
+            v4::response::AuthenticatorResponseData::TopUpBandwidth(top_up_bandwidth_response) => {
+                Self::TopUpBandwidth(Box::new(top_up_bandwidth_response))
+            }
+        }
+    }
+}
+
+impl From<v5::response::AuthenticatorResponse> for AuthenticatorResponse {
+    fn from(value: v5::response::AuthenticatorResponse) -> Self {
+        match value.data {
+            v5::response::AuthenticatorResponseData::PendingRegistration(
+                pending_registration_response,
+            ) => Self::PendingRegistration(Box::new(pending_registration_response)),
+            v5::response::AuthenticatorResponseData::Registered(registered_response) => {
+                Self::Registered(Box::new(registered_response))
+            }
+            v5::response::AuthenticatorResponseData::RemainingBandwidth(
+                remaining_bandwidth_response,
+            ) => Self::RemainingBandwidth(Box::new(remaining_bandwidth_response)),
+            v5::response::AuthenticatorResponseData::TopUpBandwidth(top_up_bandwidth_response) => {
+                Self::TopUpBandwidth(Box::new(top_up_bandwidth_response))
+            }
+        }
+    }
+}
+
+impl From<v6::response::AuthenticatorResponse> for AuthenticatorResponse {
+    fn from(value: v6::response::AuthenticatorResponse) -> Self {
+        match value.data {
+            v6::response::AuthenticatorResponseData::PendingRegistration(
+                pending_registration_response,
+            ) => Self::PendingRegistration(Box::new(pending_registration_response)),
+            v6::response::AuthenticatorResponseData::Registered(registered_response) => {
+                Self::Registered(Box::new(registered_response))
+            }
+            v6::response::AuthenticatorResponseData::RemainingBandwidth(
+                remaining_bandwidth_response,
+            ) => Self::RemainingBandwidth(Box::new(remaining_bandwidth_response)),
+            v6::response::AuthenticatorResponseData::TopUpBandwidth(top_up_bandwidth_response) => {
+                Self::TopUpBandwidth(Box::new(top_up_bandwidth_response))
+            }
+            v6::response::AuthenticatorResponseData::UpgradeMode(upgrade_mode_check_response) => {
+                Self::UpgradeMode(Box::new(upgrade_mode_check_response))
+            }
+        }
+    }
+}
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0

 use crate::error::Error;
-use base64::{engine::general_purpose, Engine};
+use base64::{Engine, engine::general_purpose};
 use nym_wireguard_types::PeerPublicKey;
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
@@ -48,7 +48,7 @@ pub struct RegistrationData {
 }

 #[derive(Serialize, Deserialize, Debug, Clone)]
-pub struct RegistredData {
+pub struct RegisteredData {
    pub pub_key: PeerPublicKey,
    pub private_ip: IpAddr,
    pub wg_port: u16,
@@ -1,7 +1,7 @@
 // Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use super::registration::{RegistrationData, RegistredData, RemainingBandwidthData};
+use super::registration::{RegisteredData, RegistrationData, RemainingBandwidthData};
 use nym_sphinx::addressing::Recipient;
 use serde::{Deserialize, Serialize};

@@ -34,7 +34,7 @@ impl AuthenticatorResponse {
    }

    pub fn new_registered(
-        registred_data: RegistredData,
+        registred_data: RegisteredData,
        reply_to: Recipient,
        request_id: u64,
    ) -> Self {
@@ -108,7 +108,7 @@ pub struct PendingRegistrationResponse {
 pub struct RegisteredResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
-    pub reply: RegistredData,
+    pub reply: RegisteredData,
 }

 #[derive(Clone, Debug, Serialize, Deserialize)]
@@ -154,8 +154,8 @@ impl From<v2::registration::RegistrationData> for v1::registration::Registration
    }
 }

-impl From<v2::registration::RegistredData> for v1::registration::RegistredData {
-    fn from(value: v2::registration::RegistredData) -> Self {
+impl From<v2::registration::RegisteredData> for v1::registration::RegisteredData {
+    fn from(value: v2::registration::RegisteredData) -> Self {
        Self {
            pub_key: value.pub_key,
            private_ip: value.private_ip,
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0

 use crate::error::Error;
-use base64::{engine::general_purpose, Engine};
+use base64::{Engine, engine::general_purpose};
 use nym_credentials_interface::CredentialSpendingData;
 use nym_wireguard_types::PeerPublicKey;
 use serde::{Deserialize, Serialize};
@@ -58,7 +58,7 @@ pub struct RegistrationData {
 }

 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
-pub struct RegistredData {
+pub struct RegisteredData {
    pub pub_key: PeerPublicKey,
    pub private_ip: IpAddr,
    pub wg_port: u16,
@@ -1,7 +1,7 @@
 // Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use super::registration::{RegistrationData, RegistredData, RemainingBandwidthData};
+use super::registration::{RegisteredData, RegistrationData, RemainingBandwidthData};
 use nym_service_provider_requests_common::{Protocol, ServiceProviderType};
 use nym_sphinx::addressing::Recipient;
 use serde::{Deserialize, Serialize};
@@ -38,7 +38,7 @@ impl AuthenticatorResponse {
    }

    pub fn new_registered(
-        registred_data: RegistredData,
+        registred_data: RegisteredData,
        reply_to: Recipient,
        request_id: u64,
    ) -> Self {
@@ -118,7 +118,7 @@ pub struct PendingRegistrationResponse {
 pub struct RegisteredResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
-    pub reply: RegistredData,
+    pub reply: RegisteredData,
 }

 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
@@ -299,8 +299,8 @@ impl From<v2::registration::RegistrationData> for v3::registration::Registration
    }
 }

-impl From<v3::registration::RegistredData> for v2::registration::RegistredData {
-    fn from(value: v3::registration::RegistredData) -> Self {
+impl From<v3::registration::RegisteredData> for v2::registration::RegisteredData {
+    fn from(value: v3::registration::RegisteredData) -> Self {
        Self {
            pub_key: value.pub_key,
            private_ip: value.private_ip,
@@ -309,8 +309,8 @@ impl From<v3::registration::RegistredData> for v2::registration::RegistredData {
    }
 }

-impl From<v2::registration::RegistredData> for v3::registration::RegistredData {
-    fn from(value: v2::registration::RegistredData) -> Self {
+impl From<v2::registration::RegisteredData> for v3::registration::RegisteredData {
+    fn from(value: v2::registration::RegisteredData) -> Self {
        Self {
            pub_key: value.pub_key,
            private_ip: value.private_ip,
@@ -674,7 +674,7 @@ mod tests {
        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
        let private_ip = IpAddr::from_str("10.10.10.10").unwrap();
        let wg_port = 51822;
-        let registred_data = v2::registration::RegistredData {
+        let registred_data = v2::registration::RegisteredData {
            pub_key,
            private_ip,
            wg_port,
@@ -701,7 +701,7 @@ mod tests {
            v3::response::AuthenticatorResponseData::Registered(v3::response::RegisteredResponse {
                request_id,
                reply_to,
-                reply: v3::registration::RegistredData {
+                reply: v3::registration::RegisteredData {
                    wg_port,
                    pub_key,
                    private_ip
@@ -715,7 +715,7 @@ mod tests {
        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
        let private_ip = IpAddr::from_str("10.10.10.10").unwrap();
        let wg_port = 51822;
-        let registred_data = v3::registration::RegistredData {
+        let registred_data = v3::registration::RegisteredData {
            pub_key,
            private_ip,
            wg_port,
@@ -742,7 +742,7 @@ mod tests {
            v2::response::AuthenticatorResponseData::Registered(v2::response::RegisteredResponse {
                request_id,
                reply_to,
-                reply: v2::registration::RegistredData {
+                reply: v2::registration::RegisteredData {
                    wg_port,
                    pub_key,
                    private_ip
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0

 use crate::error::Error;
-use base64::{engine::general_purpose, Engine};
+use base64::{Engine, engine::general_purpose};
 use nym_credentials_interface::CredentialSpendingData;
 use nym_wireguard_types::PeerPublicKey;
 use serde::{Deserialize, Serialize};
@@ -58,7 +58,7 @@ pub struct RegistrationData {
 }

 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
-pub struct RegistredData {
+pub struct RegisteredData {
    pub pub_key: PeerPublicKey,
    pub private_ip: IpAddr,
    pub wg_port: u16,
@@ -1,7 +1,7 @@
 // Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use super::registration::{RegistrationData, RegistredData, RemainingBandwidthData};
+use super::registration::{RegisteredData, RegistrationData, RemainingBandwidthData};
 use nym_service_provider_requests_common::{Protocol, ServiceProviderType};
 use nym_sphinx::addressing::Recipient;
 use serde::{Deserialize, Serialize};
@@ -38,7 +38,7 @@ impl AuthenticatorResponse {
    }

    pub fn new_registered(
-        registred_data: RegistredData,
+        registred_data: RegisteredData,
        reply_to: Recipient,
        request_id: u64,
    ) -> Self {
@@ -139,7 +139,7 @@ pub struct PendingRegistrationResponse {
 pub struct RegisteredResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
-    pub reply: RegistredData,
+    pub reply: RegisteredData,
 }

 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
@@ -262,8 +262,8 @@ impl From<v4::response::TopUpBandwidthResponse> for v3::response::TopUpBandwidth
    }
 }

-impl From<v3::registration::RegistredData> for v4::registration::RegistredData {
-    fn from(value: v3::registration::RegistredData) -> Self {
+impl From<v3::registration::RegisteredData> for v4::registration::RegisteredData {
+    fn from(value: v3::registration::RegisteredData) -> Self {
        Self {
            pub_key: value.pub_key,
            private_ips: value.private_ip.into(),
@@ -272,8 +272,8 @@ impl From<v3::registration::RegistredData> for v4::registration::RegistredData {
    }
 }

-impl From<v4::registration::RegistredData> for v3::registration::RegistredData {
-    fn from(value: v4::registration::RegistredData) -> Self {
+impl From<v4::registration::RegisteredData> for v3::registration::RegisteredData {
+    fn from(value: v4::registration::RegisteredData) -> Self {
        Self {
            pub_key: value.pub_key,
            private_ip: value.private_ips.ipv4.into(),
@@ -565,7 +565,7 @@ mod tests {
        let private_ips =
            v4::registration::IpPair::new(ipv4, Ipv6Addr::from_str("fc01::a0a").unwrap());
        let wg_port = 51822;
-        let registred_data = v3::registration::RegistredData {
+        let registred_data = v3::registration::RegisteredData {
            pub_key,
            private_ip: ipv4.into(),
            wg_port,
@@ -592,7 +592,7 @@ mod tests {
            v4::response::AuthenticatorResponseData::Registered(v4::response::RegisteredResponse {
                request_id,
                reply_to,
-                reply: v4::registration::RegistredData {
+                reply: v4::registration::RegisteredData {
                    wg_port,
                    pub_key,
                    private_ips
@@ -608,7 +608,7 @@ mod tests {
        let private_ips =
            v4::registration::IpPair::new(ipv4, Ipv6Addr::from_str("fc01::10").unwrap());
        let wg_port = 51822;
-        let registred_data = v4::registration::RegistredData {
+        let registred_data = v4::registration::RegisteredData {
            pub_key,
            private_ips,
            wg_port,
@@ -635,7 +635,7 @@ mod tests {
            v3::response::AuthenticatorResponseData::Registered(v3::response::RegisteredResponse {
                request_id,
                reply_to,
-                reply: v3::registration::RegistredData {
+                reply: v3::registration::RegisteredData {
                    wg_port,
                    pub_key,
                    private_ip: ipv4.into()
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0

 use crate::error::Error;
-use base64::{engine::general_purpose, Engine};
+use base64::{Engine, engine::general_purpose};
 use nym_credentials_interface::CredentialSpendingData;
 use nym_network_defaults::constants::{WG_TUN_DEVICE_IP_ADDRESS_V4, WG_TUN_DEVICE_IP_ADDRESS_V6};
 use nym_wireguard_types::PeerPublicKey;
@@ -110,7 +110,7 @@ pub struct RegistrationData {
 }

 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
-pub struct RegistredData {
+pub struct RegisteredData {
    pub pub_key: PeerPublicKey,
    pub private_ips: IpPair,
    pub wg_port: u16,
@@ -1,7 +1,7 @@
 // Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use super::registration::{RegistrationData, RegistredData, RemainingBandwidthData};
+use super::registration::{RegisteredData, RegistrationData, RemainingBandwidthData};
 use nym_service_provider_requests_common::{Protocol, ServiceProviderType};
 use nym_sphinx::addressing::Recipient;
 use serde::{Deserialize, Serialize};
@@ -38,7 +38,7 @@ impl AuthenticatorResponse {
    }

    pub fn new_registered(
-        registred_data: RegistredData,
+        registred_data: RegisteredData,
        reply_to: Recipient,
        request_id: u64,
    ) -> Self {
@@ -139,7 +139,7 @@ pub struct PendingRegistrationResponse {
 pub struct RegisteredResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
-    pub reply: RegistredData,
+    pub reply: RegisteredData,
 }

 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
@@ -186,8 +186,8 @@ impl From<v4::response::TopUpBandwidthResponse> for v5::response::TopUpBandwidth
    }
 }

-impl From<v4::registration::RegistredData> for v5::registration::RegistredData {
-    fn from(value: v4::registration::RegistredData) -> Self {
+impl From<v4::registration::RegisteredData> for v5::registration::RegisteredData {
+    fn from(value: v4::registration::RegisteredData) -> Self {
        Self {
            pub_key: value.pub_key,
            private_ips: value.private_ips.into(),
@@ -405,7 +405,7 @@ mod tests {
        let ipv6 = Ipv6Addr::from_str("fc01::a0a").unwrap();
        let private_ips = v4::registration::IpPair::new(ipv4, ipv6);
        let wg_port = 51822;
-        let registred_data = v4::registration::RegistredData {
+        let registred_data = v4::registration::RegisteredData {
            pub_key,
            private_ips,
            wg_port,
@@ -431,7 +431,7 @@ mod tests {
            upgraded_msg.data,
            v5::response::AuthenticatorResponseData::Registered(v5::response::RegisteredResponse {
                request_id,
-                reply: v5::registration::RegistredData {
+                reply: v5::registration::RegisteredData {
                    wg_port,
                    pub_key,
                    private_ips: v5::registration::IpPair::new(ipv4, ipv6)
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0

 use crate::error::Error;
-use base64::{engine::general_purpose, Engine};
+use base64::{Engine, engine::general_purpose};
 use nym_credentials_interface::CredentialSpendingData;
 use nym_network_defaults::constants::{WG_TUN_DEVICE_IP_ADDRESS_V4, WG_TUN_DEVICE_IP_ADDRESS_V6};
 use nym_wireguard_types::PeerPublicKey;
@@ -28,8 +28,6 @@ pub type HmacSha256 = Hmac<Sha256>;
 pub type Nonce = u64;
 pub type Taken = Option<SystemTime>;

-pub const BANDWIDTH_CAP_PER_DAY: u64 = 250 * 1024 * 1024 * 1024; // 250 GB
-
 #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, Serialize, Deserialize)]
 pub struct IpPair {
    pub ipv4: Ipv4Addr,
@@ -110,7 +108,7 @@ pub struct RegistrationData {
 }

 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
-pub struct RegistredData {
+pub struct RegisteredData {
    pub pub_key: PeerPublicKey,
    pub private_ips: IpPair,
    pub wg_port: u16,
@@ -1,7 +1,7 @@
 // Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use super::registration::{RegistrationData, RegistredData, RemainingBandwidthData};
+use super::registration::{RegisteredData, RegistrationData, RemainingBandwidthData};
 use nym_service_provider_requests_common::{Protocol, ServiceProviderType};
 use serde::{Deserialize, Serialize};

@@ -32,7 +32,7 @@ impl AuthenticatorResponse {
        }
    }

-    pub fn new_registered(registred_data: RegistredData, request_id: u64) -> Self {
+    pub fn new_registered(registred_data: RegisteredData, request_id: u64) -> Self {
        Self {
            protocol: Protocol {
                service_provider_type: ServiceProviderType::Authenticator,
@@ -116,7 +116,7 @@ pub struct PendingRegistrationResponse {
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct RegisteredResponse {
    pub request_id: u64,
-    pub reply: RegistredData,
+    pub reply: RegisteredData,
 }

 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
@@ -0,0 +1,441 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::{v5, v6};
+
+impl TryFrom<v5::request::AuthenticatorRequest> for v6::request::AuthenticatorRequest {
+    type Error = crate::Error;
+
+    fn try_from(
+        authenticator_request: v5::request::AuthenticatorRequest,
+    ) -> Result<Self, Self::Error> {
+        Ok(Self {
+            protocol: v6::PROTOCOL,
+            data: authenticator_request.data.try_into()?,
+            request_id: authenticator_request.request_id,
+        })
+    }
+}
+
+impl TryFrom<v5::request::AuthenticatorRequestData> for v6::request::AuthenticatorRequestData {
+    type Error = crate::Error;
+
+    fn try_from(
+        authenticator_request_data: v5::request::AuthenticatorRequestData,
+    ) -> Result<Self, Self::Error> {
+        match authenticator_request_data {
+            v5::request::AuthenticatorRequestData::Initial(init_msg) => Ok(
+                v6::request::AuthenticatorRequestData::Initial(init_msg.into()),
+            ),
+            v5::request::AuthenticatorRequestData::Final(final_msg) => Ok(
+                v6::request::AuthenticatorRequestData::Final(Box::new((*final_msg).try_into()?)),
+            ),
+            v5::request::AuthenticatorRequestData::QueryBandwidth(pub_key) => Ok(
+                v6::request::AuthenticatorRequestData::QueryBandwidth(pub_key),
+            ),
+            v5::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message) => Ok(
+                v6::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message.into()),
+            ),
+        }
+    }
+}
+
+impl From<v5::registration::InitMessage> for v6::registration::InitMessage {
+    fn from(init_msg: v5::registration::InitMessage) -> Self {
+        Self {
+            pub_key: init_msg.pub_key,
+        }
+    }
+}
+
+impl TryFrom<v5::registration::FinalMessage> for v6::registration::FinalMessage {
+    type Error = crate::Error;
+
+    fn try_from(final_msg: v5::registration::FinalMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            gateway_client: final_msg.gateway_client.into(),
+            credential: final_msg
+                .credential
+                .map(TryInto::try_into)
+                .transpose()
+                .map_err(Self::Error::conversion_display)?,
+        })
+    }
+}
+
+impl From<v5::registration::GatewayClient> for v6::registration::GatewayClient {
+    fn from(gateway_client: v5::registration::GatewayClient) -> Self {
+        Self {
+            pub_key: gateway_client.pub_key,
+            private_ips: gateway_client.private_ips.into(),
+            mac: gateway_client.mac.into(),
+        }
+    }
+}
+
+impl From<v6::registration::GatewayClient> for v5::registration::GatewayClient {
+    fn from(gateway_client: v6::registration::GatewayClient) -> Self {
+        Self {
+            pub_key: gateway_client.pub_key,
+            private_ips: gateway_client.private_ips.into(),
+            mac: gateway_client.mac.into(),
+        }
+    }
+}
+
+impl From<v5::registration::ClientMac> for v6::registration::ClientMac {
+    fn from(client_mac: v5::registration::ClientMac) -> Self {
+        Self::new((*client_mac).clone())
+    }
+}
+
+impl From<v6::registration::ClientMac> for v5::registration::ClientMac {
+    fn from(client_mac: v6::registration::ClientMac) -> Self {
+        Self::new((*client_mac).clone())
+    }
+}
+
+impl From<Box<v5::topup::TopUpMessage>> for Box<v6::topup::TopUpMessage> {
+    fn from(top_up_message: Box<v5::topup::TopUpMessage>) -> Self {
+        Box::new(v6::topup::TopUpMessage {
+            pub_key: top_up_message.pub_key,
+            credential: top_up_message.credential,
+        })
+    }
+}
+
+impl From<v5::response::AuthenticatorResponse> for v6::response::AuthenticatorResponse {
+    fn from(value: v5::response::AuthenticatorResponse) -> Self {
+        Self {
+            protocol: v6::PROTOCOL,
+            data: value.data.into(),
+        }
+    }
+}
+
+impl From<v5::response::AuthenticatorResponseData> for v6::response::AuthenticatorResponseData {
+    fn from(authenticator_response_data: v5::response::AuthenticatorResponseData) -> Self {
+        match authenticator_response_data {
+            v5::response::AuthenticatorResponseData::PendingRegistration(pending_response) => {
+                v6::response::AuthenticatorResponseData::PendingRegistration(
+                    pending_response.into(),
+                )
+            }
+            v5::response::AuthenticatorResponseData::Registered(registered_response) => {
+                v6::response::AuthenticatorResponseData::Registered(registered_response.into())
+            }
+            v5::response::AuthenticatorResponseData::RemainingBandwidth(
+                remaining_bandwidth_response,
+            ) => v6::response::AuthenticatorResponseData::RemainingBandwidth(
+                remaining_bandwidth_response.into(),
+            ),
+            v5::response::AuthenticatorResponseData::TopUpBandwidth(top_up_response) => {
+                v6::response::AuthenticatorResponseData::TopUpBandwidth(top_up_response.into())
+            }
+        }
+    }
+}
+
+impl From<v5::response::RegisteredResponse> for v6::response::RegisteredResponse {
+    fn from(value: v5::response::RegisteredResponse) -> Self {
+        Self {
+            request_id: value.request_id,
+            reply: value.reply.into(),
+            upgrade_mode_enabled: false,
+        }
+    }
+}
+
+impl From<v5::response::PendingRegistrationResponse> for v6::response::PendingRegistrationResponse {
+    fn from(value: v5::response::PendingRegistrationResponse) -> Self {
+        Self {
+            request_id: value.request_id,
+            reply: value.reply.into(),
+            upgrade_mode_enabled: false,
+        }
+    }
+}
+
+impl From<v5::registration::RegistrationData> for v6::registration::RegistrationData {
+    fn from(value: v5::registration::RegistrationData) -> Self {
+        Self {
+            nonce: value.nonce,
+            gateway_data: value.gateway_data.into(),
+            wg_port: value.wg_port,
+        }
+    }
+}
+
+impl From<v6::registration::RegistrationData> for v5::registration::RegistrationData {
+    fn from(value: v6::registration::RegistrationData) -> Self {
+        Self {
+            nonce: value.nonce,
+            gateway_data: value.gateway_data.into(),
+            wg_port: value.wg_port,
+        }
+    }
+}
+
+impl From<v5::response::RemainingBandwidthResponse> for v6::response::RemainingBandwidthResponse {
+    fn from(value: v5::response::RemainingBandwidthResponse) -> Self {
+        Self {
+            request_id: value.request_id,
+            reply: value.reply.map(Into::into),
+            upgrade_mode_enabled: false,
+        }
+    }
+}
+
+impl From<v5::response::TopUpBandwidthResponse> for v6::response::TopUpBandwidthResponse {
+    fn from(value: v5::response::TopUpBandwidthResponse) -> Self {
+        Self {
+            request_id: value.request_id,
+            reply: value.reply.into(),
+            upgrade_mode_enabled: false,
+        }
+    }
+}
+
+impl From<v5::registration::RegisteredData> for v6::registration::RegisteredData {
+    fn from(value: v5::registration::RegisteredData) -> Self {
+        Self {
+            pub_key: value.pub_key,
+            private_ips: value.private_ips.into(),
+            wg_port: value.wg_port,
+        }
+    }
+}
+
+impl From<v5::registration::RemainingBandwidthData> for v6::registration::RemainingBandwidthData {
+    fn from(value: v5::registration::RemainingBandwidthData) -> Self {
+        Self {
+            available_bandwidth: value.available_bandwidth,
+        }
+    }
+}
+
+impl From<v5::registration::IpPair> for v6::registration::IpPair {
+    fn from(value: v5::registration::IpPair) -> Self {
+        Self {
+            ipv4: value.ipv4,
+            ipv6: value.ipv6,
+        }
+    }
+}
+
+impl From<v6::registration::IpPair> for v5::registration::IpPair {
+    fn from(value: v6::registration::IpPair) -> Self {
+        Self {
+            ipv4: value.ipv4,
+            ipv6: value.ipv6,
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::{
+        net::{Ipv4Addr, Ipv6Addr},
+        str::FromStr,
+    };
+
+    use nym_credentials_interface::{BandwidthCredential, CredentialSpendingData, TicketType};
+    use nym_crypto::asymmetric::x25519::PrivateKey;
+    use nym_wireguard_types::PeerPublicKey;
+    use x25519_dalek::PublicKey;
+
+    use super::*;
+    use crate::models::BandwidthClaim;
+    use crate::{util::tests::CREDENTIAL_BYTES, v5};
+
+    #[test]
+    fn upgrade_initial_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+
+        let (msg, _) = v5::request::AuthenticatorRequest::new_initial_request(
+            v5::registration::InitMessage::new(pub_key),
+        );
+        let upgraded_msg = v6::request::AuthenticatorRequest::try_from(msg).unwrap();
+
+        assert_eq!(upgraded_msg.protocol, v6::PROTOCOL);
+        assert_eq!(
+            upgraded_msg.data,
+            v6::request::AuthenticatorRequestData::Initial(v6::registration::InitMessage {
+                pub_key
+            })
+        );
+    }
+
+    #[test]
+    fn upgrade_final_req() {
+        let mut rng = rand::thread_rng();
+
+        let local_secret = PrivateKey::new(&mut rng);
+        let remote_secret = x25519_dalek::StaticSecret::random_from_rng(&mut rng);
+        let ipv4 = Ipv4Addr::from_str("10.10.10.10").unwrap();
+        let ipv6 = Ipv6Addr::from_str("fc01::a0a").unwrap();
+        let ips = v5::registration::IpPair::new(ipv4, ipv6);
+        let nonce = 42;
+        let gateway_client = v5::registration::GatewayClient::new(
+            &local_secret,
+            (&remote_secret).into(),
+            ips,
+            nonce,
+        );
+        let credential = CredentialSpendingData::try_from_bytes(&CREDENTIAL_BYTES).unwrap();
+        let final_message = v5::registration::FinalMessage {
+            gateway_client: gateway_client.clone(),
+            credential: Some(credential.clone()),
+        };
+
+        let (msg, _) = v5::request::AuthenticatorRequest::new_final_request(final_message);
+        let upgraded_msg = v6::request::AuthenticatorRequest::try_from(msg).unwrap();
+
+        assert_eq!(upgraded_msg.protocol, v6::PROTOCOL);
+        assert_eq!(
+            upgraded_msg.data,
+            v6::request::AuthenticatorRequestData::Final(Box::new(
+                v6::registration::FinalMessage {
+                    gateway_client: v6::registration::GatewayClient::new(
+                        &local_secret,
+                        (&remote_secret).into(),
+                        v6::registration::IpPair::new(ipv4, ipv6),
+                        nonce
+                    ),
+                    credential: Some(BandwidthClaim {
+                        credential: BandwidthCredential::ZkNym(Box::new(credential)),
+                        kind: TicketType::V1MixnetEntry,
+                    })
+                }
+            ))
+        );
+    }
+
+    #[test]
+    fn upgrade_query_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+
+        let (msg, _) = v5::request::AuthenticatorRequest::new_query_request(pub_key);
+        let upgraded_msg = v6::request::AuthenticatorRequest::try_from(msg).unwrap();
+
+        assert_eq!(upgraded_msg.protocol, v6::PROTOCOL);
+        assert_eq!(
+            upgraded_msg.data,
+            v6::request::AuthenticatorRequestData::QueryBandwidth(pub_key)
+        );
+    }
+
+    #[test]
+    fn upgrade_pending_reg_resp() {
+        let mut rng = rand::thread_rng();
+
+        let local_secret = PrivateKey::new(&mut rng);
+        let remote_secret = x25519_dalek::StaticSecret::random_from_rng(&mut rng);
+        let ipv4 = Ipv4Addr::from_str("10.10.10.10").unwrap();
+        let ipv6 = Ipv6Addr::from_str("fc01::a0a").unwrap();
+        let ips = v5::registration::IpPair::new(ipv4, ipv6);
+        let nonce = 42;
+        let wg_port = 51822;
+        let gateway_data = v5::registration::GatewayClient::new(
+            &local_secret,
+            (&remote_secret).into(),
+            ips,
+            nonce,
+        );
+        let registration_data = v5::registration::RegistrationData {
+            nonce,
+            gateway_data,
+            wg_port,
+        };
+        let request_id = 123;
+
+        let msg = v5::response::AuthenticatorResponse::new_pending_registration_success(
+            registration_data,
+            request_id,
+        );
+        let upgraded_msg = v6::response::AuthenticatorResponse::from(msg);
+
+        assert_eq!(upgraded_msg.protocol, v6::PROTOCOL);
+
+        assert_eq!(
+            upgraded_msg.data,
+            v6::response::AuthenticatorResponseData::PendingRegistration(
+                v6::response::PendingRegistrationResponse {
+                    request_id,
+                    reply: v6::registration::RegistrationData {
+                        nonce,
+                        gateway_data: v6::registration::GatewayClient::new(
+                            &local_secret,
+                            (&remote_secret).into(),
+                            v6::registration::IpPair::new(ipv4, ipv6),
+                            nonce
+                        ),
+                        wg_port
+                    },
+                    upgrade_mode_enabled: false,
+                }
+            )
+        );
+    }
+
+    #[test]
+    fn upgrade_registered_resp() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let ipv4 = Ipv4Addr::from_str("10.1.10.10").unwrap();
+        let ipv6 = Ipv6Addr::from_str("fc01::a0a").unwrap();
+        let private_ips = v5::registration::IpPair::new(ipv4, ipv6);
+        let wg_port = 51822;
+        let registered_data = v5::registration::RegisteredData {
+            pub_key,
+            private_ips,
+            wg_port,
+        };
+        let request_id = 123;
+
+        let msg = v5::response::AuthenticatorResponse::new_registered(registered_data, request_id);
+        let upgraded_msg = v6::response::AuthenticatorResponse::from(msg);
+
+        assert_eq!(upgraded_msg.protocol, v6::PROTOCOL);
+        assert_eq!(
+            upgraded_msg.data,
+            v6::response::AuthenticatorResponseData::Registered(v6::response::RegisteredResponse {
+                request_id,
+                reply: v6::registration::RegisteredData {
+                    wg_port,
+                    pub_key,
+                    private_ips: v6::registration::IpPair::new(ipv4, ipv6)
+                },
+                upgrade_mode_enabled: false,
+            })
+        );
+    }
+
+    #[test]
+    fn upgrade_remaining_bandwidth_resp() {
+        let available_bandwidth = 42;
+        let remaining_bandwidth_data = Some(v5::registration::RemainingBandwidthData {
+            available_bandwidth,
+        });
+        let request_id = 123;
+
+        let msg = v5::response::AuthenticatorResponse::new_remaining_bandwidth(
+            remaining_bandwidth_data,
+            request_id,
+        );
+        let upgraded_msg = v6::response::AuthenticatorResponse::from(msg);
+
+        assert_eq!(upgraded_msg.protocol, v6::PROTOCOL);
+        assert_eq!(
+            upgraded_msg.data,
+            v6::response::AuthenticatorResponseData::RemainingBandwidth(
+                v6::response::RemainingBandwidthResponse {
+                    request_id,
+                    reply: Some(v6::registration::RemainingBandwidthData {
+                        available_bandwidth,
+                    }),
+                    upgrade_mode_enabled: false,
+                }
+            )
+        );
+    }
+}
@@ -0,0 +1,15 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use nym_service_provider_requests_common::{Protocol, ServiceProviderType};
+
+pub mod conversion;
+pub mod registration;
+pub mod request;
+pub mod response;
+pub mod topup;
+pub mod upgrade_mode_check;
+
+pub const VERSION: u8 = 6;
+
+pub const PROTOCOL: Protocol = Protocol::new(VERSION, ServiceProviderType::Authenticator);
@@ -0,0 +1,287 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::error::Error;
+use crate::models::BandwidthClaim;
+use base64::{Engine, engine::general_purpose};
+use nym_network_defaults::constants::{WG_TUN_DEVICE_IP_ADDRESS_V4, WG_TUN_DEVICE_IP_ADDRESS_V6};
+use nym_wireguard_types::PeerPublicKey;
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
+use std::time::SystemTime;
+use std::{fmt, ops::Deref, str::FromStr};
+
+#[cfg(feature = "verify")]
+use hmac::{Hmac, Mac};
+#[cfg(feature = "verify")]
+use nym_crypto::asymmetric::x25519::{PrivateKey, PublicKey};
+#[cfg(feature = "verify")]
+use sha2::Sha256;
+
+pub type PendingRegistrations = HashMap<PeerPublicKey, RegistrationData>;
+pub type PrivateIPs = HashMap<IpPair, Taken>;
+
+#[cfg(feature = "verify")]
+pub type HmacSha256 = Hmac<Sha256>;
+
+pub type Nonce = u64;
+pub type Taken = Option<SystemTime>;
+
+#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, Serialize, Deserialize)]
+pub struct IpPair {
+    pub ipv4: Ipv4Addr,
+    pub ipv6: Ipv6Addr,
+}
+
+impl IpPair {
+    pub fn new(ipv4: Ipv4Addr, ipv6: Ipv6Addr) -> Self {
+        IpPair { ipv4, ipv6 }
+    }
+}
+
+impl From<(Ipv4Addr, Ipv6Addr)> for IpPair {
+    fn from((ipv4, ipv6): (Ipv4Addr, Ipv6Addr)) -> Self {
+        IpPair { ipv4, ipv6 }
+    }
+}
+
+impl fmt::Display for IpPair {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "({}, {})", self.ipv4, self.ipv6)
+    }
+}
+
+impl From<IpAddr> for IpPair {
+    fn from(value: IpAddr) -> Self {
+        let (before_last_byte, last_byte) = match value {
+            IpAddr::V4(ipv4_addr) => (ipv4_addr.octets()[2], ipv4_addr.octets()[3]),
+            IpAddr::V6(ipv6_addr) => (ipv6_addr.octets()[14], ipv6_addr.octets()[15]),
+        };
+        let last_bytes = ((before_last_byte as u16) << 8) | last_byte as u16;
+        let ipv4 = Ipv4Addr::new(
+            WG_TUN_DEVICE_IP_ADDRESS_V4.octets()[0],
+            WG_TUN_DEVICE_IP_ADDRESS_V4.octets()[1],
+            before_last_byte,
+            last_byte,
+        );
+        let ipv6 = Ipv6Addr::new(
+            WG_TUN_DEVICE_IP_ADDRESS_V6.segments()[0],
+            WG_TUN_DEVICE_IP_ADDRESS_V6.segments()[1],
+            WG_TUN_DEVICE_IP_ADDRESS_V6.segments()[2],
+            WG_TUN_DEVICE_IP_ADDRESS_V6.segments()[3],
+            WG_TUN_DEVICE_IP_ADDRESS_V6.segments()[4],
+            WG_TUN_DEVICE_IP_ADDRESS_V6.segments()[5],
+            WG_TUN_DEVICE_IP_ADDRESS_V6.segments()[6],
+            last_bytes,
+        );
+        IpPair::new(ipv4, ipv6)
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
+pub struct InitMessage {
+    /// Base64 encoded x25519 public key
+    pub pub_key: PeerPublicKey,
+}
+
+impl InitMessage {
+    pub fn new(pub_key: PeerPublicKey) -> Self {
+        InitMessage { pub_key }
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
+pub struct FinalMessage {
+    /// Gateway client data
+    pub gateway_client: GatewayClient,
+
+    /// Ecash credential
+    pub credential: Option<BandwidthClaim>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
+pub struct RegistrationData {
+    pub nonce: u64,
+    pub gateway_data: GatewayClient,
+    pub wg_port: u16,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
+pub struct RegisteredData {
+    pub pub_key: PeerPublicKey,
+    pub private_ips: IpPair,
+    pub wg_port: u16,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
+pub struct RemainingBandwidthData {
+    pub available_bandwidth: i64,
+}
+
+/// Client that wants to register sends its PublicKey bytes mac digest encrypted with a DH shared secret.
+/// Gateway/Nym node can then verify pub_key payload using the same process
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
+pub struct GatewayClient {
+    /// Base64 encoded x25519 public key
+    pub pub_key: PeerPublicKey,
+
+    /// Assigned private IPs (v4 and v6)
+    pub private_ips: IpPair,
+
+    /// Sha256 hmac on the data (alongside the prior nonce)
+    pub mac: ClientMac,
+}
+
+impl GatewayClient {
+    #[cfg(feature = "verify")]
+    pub fn new(
+        local_secret: &PrivateKey,
+        remote_public: x25519_dalek::PublicKey,
+        private_ips: IpPair,
+        nonce: u64,
+    ) -> Self {
+        let local_public = PublicKey::from(local_secret);
+        let remote_public = PublicKey::from(remote_public);
+
+        let dh = local_secret.diffie_hellman(&remote_public);
+
+        // TODO: change that to use our nym_crypto::hmac module instead
+        #[allow(clippy::expect_used)]
+        let mut mac = HmacSha256::new_from_slice(&dh[..])
+            .expect("x25519 shared secret is always 32 bytes long");
+
+        mac.update(local_public.as_bytes());
+        mac.update(private_ips.to_string().as_bytes());
+        mac.update(&nonce.to_le_bytes());
+
+        GatewayClient {
+            pub_key: PeerPublicKey::new(local_public.into()),
+            private_ips,
+            mac: ClientMac(mac.finalize().into_bytes().to_vec()),
+        }
+    }
+
+    // Reusable secret should be gateways Wireguard PK
+    // Client should perform this step when generating its payload, using its own WG PK
+    #[cfg(feature = "verify")]
+    pub fn verify(&self, gateway_key: &PrivateKey, nonce: u64) -> Result<(), Error> {
+        // use gateways key as a ref to an x25519_dalek key
+        let dh = gateway_key.inner().diffie_hellman(&self.pub_key);
+
+        // TODO: change that to use our nym_crypto::hmac module instead
+        #[allow(clippy::expect_used)]
+        let mut mac = HmacSha256::new_from_slice(dh.as_bytes())
+            .expect("x25519 shared secret is always 32 bytes long");
+
+        mac.update(self.pub_key.as_bytes());
+        mac.update(self.private_ips.to_string().as_bytes());
+        mac.update(&nonce.to_le_bytes());
+
+        mac.verify_slice(&self.mac)
+            .map_err(|source| Error::FailedClientMacVerification {
+                client: self.pub_key.to_string(),
+                source,
+            })
+    }
+
+    pub fn pub_key(&self) -> PeerPublicKey {
+        self.pub_key
+    }
+}
+
+// TODO: change the inner type into generic array of size HmacSha256::OutputSize
+// TODO2: rely on our internal crypto/hmac
+#[derive(Debug, Clone, PartialEq)]
+pub struct ClientMac(Vec<u8>);
+
+impl fmt::Display for ClientMac {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{}", general_purpose::STANDARD.encode(&self.0))
+    }
+}
+
+impl From<Vec<u8>> for ClientMac {
+    fn from(v: Vec<u8>) -> Self {
+        ClientMac(v)
+    }
+}
+
+impl ClientMac {
+    #[allow(dead_code)]
+    pub fn new(mac: Vec<u8>) -> Self {
+        ClientMac(mac)
+    }
+}
+
+impl Deref for ClientMac {
+    type Target = Vec<u8>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl FromStr for ClientMac {
+    type Err = Error;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let mac_bytes: Vec<u8> =
+            general_purpose::STANDARD
+                .decode(s)
+                .map_err(|source| Error::MalformedClientMac {
+                    mac: s.to_string(),
+                    source,
+                })?;
+
+        Ok(ClientMac(mac_bytes))
+    }
+}
+
+impl Serialize for ClientMac {
+    fn serialize<S: serde::Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
+        let encoded_key = general_purpose::STANDARD.encode(self.0.clone());
+        serializer.serialize_str(&encoded_key)
+    }
+}
+
+impl<'de> Deserialize<'de> for ClientMac {
+    fn deserialize<D: serde::Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
+        let encoded_key = String::deserialize(deserializer)?;
+        ClientMac::from_str(&encoded_key).map_err(serde::de::Error::custom)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use nym_crypto::asymmetric::x25519;
+    use nym_test_utils::helpers::deterministic_rng;
+
+    #[test]
+    fn create_ip_pair() {
+        let ipv4: IpAddr = Ipv4Addr::from_str("10.1.10.50").unwrap().into();
+        let ipv6: IpAddr = Ipv6Addr::from_str("fc01::0a32").unwrap().into();
+
+        assert_eq!(IpPair::from(ipv4), IpPair::from(ipv6));
+    }
+
+    #[test]
+    #[cfg(feature = "verify")]
+    fn client_request_roundtrip() {
+        let mut rng = deterministic_rng();
+
+        let gateway_key_pair = x25519::KeyPair::new(&mut rng);
+        let client_key_pair = x25519::KeyPair::new(&mut rng);
+
+        let nonce = 1234567890;
+
+        let client = GatewayClient::new(
+            client_key_pair.private_key(),
+            x25519_dalek::PublicKey::from(gateway_key_pair.public_key().to_bytes()),
+            IpPair::new("10.0.0.42".parse().unwrap(), "fc00::42".parse().unwrap()),
+            nonce,
+        );
+        assert!(client.verify(gateway_key_pair.private_key(), nonce).is_ok())
+    }
+}
@@ -0,0 +1,135 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use super::{
+    PROTOCOL,
+    registration::{FinalMessage, InitMessage},
+    topup::TopUpMessage,
+    upgrade_mode_check::UpgradeModeCheckRequest,
+};
+use nym_service_provider_requests_common::Protocol;
+use nym_wireguard_types::PeerPublicKey;
+use serde::{Deserialize, Serialize};
+
+use crate::make_bincode_serializer;
+
+fn generate_random() -> u64 {
+    use rand::RngCore;
+    let mut rng = rand::rngs::OsRng;
+    rng.next_u64()
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub struct AuthenticatorRequest {
+    pub protocol: Protocol,
+    pub data: AuthenticatorRequestData,
+    pub request_id: u64,
+}
+
+impl AuthenticatorRequest {
+    pub fn from_reconstructed_message(
+        message: &nym_sphinx::receiver::ReconstructedMessage,
+    ) -> Result<Self, bincode::Error> {
+        use bincode::Options;
+        make_bincode_serializer().deserialize(&message.message)
+    }
+
+    pub fn new_initial_request(init_message: InitMessage) -> (Self, u64) {
+        let request_id = generate_random();
+        (
+            Self {
+                protocol: PROTOCOL,
+                data: AuthenticatorRequestData::Initial(init_message),
+                request_id,
+            },
+            request_id,
+        )
+    }
+
+    pub fn new_final_request(final_message: FinalMessage) -> (Self, u64) {
+        let request_id = generate_random();
+        (
+            Self {
+                protocol: PROTOCOL,
+                data: AuthenticatorRequestData::Final(Box::new(final_message)),
+                request_id,
+            },
+            request_id,
+        )
+    }
+
+    pub fn new_query_request(peer_public_key: PeerPublicKey) -> (Self, u64) {
+        let request_id = generate_random();
+        (
+            Self {
+                protocol: PROTOCOL,
+                data: AuthenticatorRequestData::QueryBandwidth(peer_public_key),
+                request_id,
+            },
+            request_id,
+        )
+    }
+
+    pub fn new_topup_request(top_up_message: TopUpMessage) -> (Self, u64) {
+        let request_id = generate_random();
+        (
+            Self {
+                protocol: PROTOCOL,
+                data: AuthenticatorRequestData::TopUpBandwidth(Box::new(top_up_message)),
+                request_id,
+            },
+            request_id,
+        )
+    }
+
+    pub fn new_upgrade_mode_check_request(message: UpgradeModeCheckRequest) -> (Self, u64) {
+        let request_id = generate_random();
+        (
+            Self {
+                protocol: PROTOCOL,
+                data: AuthenticatorRequestData::CheckUpgradeMode(message),
+                request_id,
+            },
+            request_id,
+        )
+    }
+
+    pub fn to_bytes(&self) -> Result<Vec<u8>, bincode::Error> {
+        use bincode::Options;
+        make_bincode_serializer().serialize(self)
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub enum AuthenticatorRequestData {
+    Initial(InitMessage),
+    Final(Box<FinalMessage>),
+    QueryBandwidth(PeerPublicKey),
+    TopUpBandwidth(Box<TopUpMessage>),
+    CheckUpgradeMode(UpgradeModeCheckRequest),
+}
+
+#[cfg(test)]
+mod tests {
+    use super::super::VERSION;
+    use super::*;
+    use nym_service_provider_requests_common::ServiceProviderType;
+    use std::str::FromStr;
+
+    #[test]
+    fn check_first_bytes_protocol() {
+        let version = VERSION;
+        let data = AuthenticatorRequest {
+            protocol: Protocol {
+                version,
+                service_provider_type: ServiceProviderType::Authenticator,
+            },
+            data: AuthenticatorRequestData::Initial(InitMessage::new(
+                PeerPublicKey::from_str("yvNUDpT5l7W/xDhiu6HkqTHDQwbs/B3J5UrLmORl1EQ=").unwrap(),
+            )),
+            request_id: 1,
+        };
+        let bytes = *data.to_bytes().unwrap().first_chunk::<2>().unwrap();
+        assert_eq!(bytes, [version, ServiceProviderType::Authenticator as u8]);
+    }
+}
@@ -0,0 +1,153 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use super::registration::{RegisteredData, RegistrationData, RemainingBandwidthData};
+use nym_service_provider_requests_common::Protocol;
+use serde::{Deserialize, Serialize};
+
+use crate::make_bincode_serializer;
+
+use super::PROTOCOL;
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub struct AuthenticatorResponse {
+    pub protocol: Protocol,
+    pub data: AuthenticatorResponseData,
+}
+
+impl AuthenticatorResponse {
+    pub fn new_pending_registration_success(
+        registration_data: RegistrationData,
+        request_id: u64,
+        upgrade_mode_enabled: bool,
+    ) -> Self {
+        Self {
+            protocol: PROTOCOL,
+            data: AuthenticatorResponseData::PendingRegistration(PendingRegistrationResponse {
+                reply: registration_data,
+                request_id,
+                upgrade_mode_enabled,
+            }),
+        }
+    }
+
+    pub fn new_registered(
+        registered_data: RegisteredData,
+        request_id: u64,
+        upgrade_mode_enabled: bool,
+    ) -> Self {
+        Self {
+            protocol: PROTOCOL,
+            data: AuthenticatorResponseData::Registered(RegisteredResponse {
+                reply: registered_data,
+                request_id,
+                upgrade_mode_enabled,
+            }),
+        }
+    }
+
+    pub fn new_remaining_bandwidth(
+        remaining_bandwidth_data: Option<RemainingBandwidthData>,
+        request_id: u64,
+        upgrade_mode_enabled: bool,
+    ) -> Self {
+        Self {
+            protocol: PROTOCOL,
+            data: AuthenticatorResponseData::RemainingBandwidth(RemainingBandwidthResponse {
+                reply: remaining_bandwidth_data,
+                request_id,
+                upgrade_mode_enabled,
+            }),
+        }
+    }
+
+    pub fn new_topup_bandwidth(
+        remaining_bandwidth_data: RemainingBandwidthData,
+        request_id: u64,
+        upgrade_mode_enabled: bool,
+    ) -> Self {
+        Self {
+            protocol: PROTOCOL,
+            data: AuthenticatorResponseData::TopUpBandwidth(TopUpBandwidthResponse {
+                reply: remaining_bandwidth_data,
+                request_id,
+                upgrade_mode_enabled,
+            }),
+        }
+    }
+
+    pub fn new_upgrade_mode_check(request_id: u64, upgrade_mode_enabled: bool) -> Self {
+        Self {
+            protocol: PROTOCOL,
+            data: AuthenticatorResponseData::UpgradeMode(UpgradeModeResponse {
+                request_id,
+                upgrade_mode_enabled,
+            }),
+        }
+    }
+
+    pub fn to_bytes(&self) -> Result<Vec<u8>, bincode::Error> {
+        use bincode::Options;
+        make_bincode_serializer().serialize(self)
+    }
+
+    pub fn from_reconstructed_message(
+        message: &nym_sphinx::receiver::ReconstructedMessage,
+    ) -> Result<Self, bincode::Error> {
+        use bincode::Options;
+        make_bincode_serializer().deserialize(&message.message)
+    }
+
+    pub fn id(&self) -> Option<u64> {
+        match &self.data {
+            AuthenticatorResponseData::PendingRegistration(response) => Some(response.request_id),
+            AuthenticatorResponseData::Registered(response) => Some(response.request_id),
+            AuthenticatorResponseData::RemainingBandwidth(response) => Some(response.request_id),
+            AuthenticatorResponseData::TopUpBandwidth(response) => Some(response.request_id),
+            AuthenticatorResponseData::UpgradeMode(response) => Some(response.request_id),
+        }
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub enum AuthenticatorResponseData {
+    PendingRegistration(PendingRegistrationResponse),
+    Registered(RegisteredResponse),
+    RemainingBandwidth(RemainingBandwidthResponse),
+    TopUpBandwidth(TopUpBandwidthResponse),
+    UpgradeMode(UpgradeModeResponse),
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub struct PendingRegistrationResponse {
+    pub request_id: u64,
+    pub reply: RegistrationData,
+    pub upgrade_mode_enabled: bool,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub struct RegisteredResponse {
+    pub request_id: u64,
+    pub reply: RegisteredData,
+    pub upgrade_mode_enabled: bool,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub struct RemainingBandwidthResponse {
+    pub request_id: u64,
+    pub reply: Option<RemainingBandwidthData>,
+    pub upgrade_mode_enabled: bool,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub struct TopUpBandwidthResponse {
+    pub request_id: u64,
+    pub reply: RemainingBandwidthData,
+    pub upgrade_mode_enabled: bool,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub struct UpgradeModeResponse {
+    pub request_id: u64,
+    pub upgrade_mode_enabled: bool,
+}
@@ -0,0 +1,15 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use nym_credentials_interface::CredentialSpendingData;
+use nym_wireguard_types::PeerPublicKey;
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
+pub struct TopUpMessage {
+    /// Base64 encoded x25519 public key
+    pub pub_key: PeerPublicKey,
+
+    /// Ecash credential
+    pub credential: CredentialSpendingData,
+}
@@ -0,0 +1,12 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
+#[non_exhaustive]
+pub enum UpgradeModeCheckRequest {
+    /// Attempt to request upgrade mode recheck via the JWT issued as the result of
+    /// global attestation.json being published
+    UpgradeModeJwt { token: String },
+}
@@ -0,0 +1,211 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use super::{v1, v2, v3, v4, v5, v6};
+use nym_service_provider_requests_common::{Protocol, ServiceProviderType};
+
+#[derive(Copy, Clone, Debug, PartialEq, strum_macros::Display)]
+#[strum(serialize_all = "snake_case")]
+pub enum AuthenticatorVersion {
+    /// introduced in wispa release (1.1.5)
+    V1,
+
+    /// introduced in aero release (1.1.9)
+    V2,
+
+    /// introduced in magura release (1.1.10)
+    V3,
+
+    /// introduced in crunch release (1.2.0)
+    V4,
+
+    /// introduced in dorina-patched release (1.6.1)
+    V5,
+
+    /// introduced in niolo release (1.23.0)
+    V6,
+
+    /// an unknown, future, variant that can be present if running outdated software
+    UNKNOWN,
+}
+
+impl AuthenticatorVersion {
+    pub const LATEST: Self = Self::V6;
+
+    pub const fn release_version(&self) -> semver::Version {
+        match self {
+            AuthenticatorVersion::V1 => semver::Version::new(1, 1, 5),
+            AuthenticatorVersion::V2 => semver::Version::new(1, 1, 9),
+            AuthenticatorVersion::V3 => semver::Version::new(1, 1, 10),
+            AuthenticatorVersion::V4 => semver::Version::new(1, 2, 0),
+            AuthenticatorVersion::V5 => semver::Version::new(1, 6, 1),
+            AuthenticatorVersion::V6 => semver::Version::new(1, 23, 0),
+            AuthenticatorVersion::UNKNOWN => semver::Version::new(0, 0, 0),
+        }
+    }
+}
+
+impl From<Protocol> for AuthenticatorVersion {
+    fn from(value: Protocol) -> Self {
+        if value.service_provider_type != ServiceProviderType::Authenticator {
+            AuthenticatorVersion::UNKNOWN
+        } else if value.version == v1::VERSION {
+            AuthenticatorVersion::V1
+        } else if value.version == v2::VERSION {
+            AuthenticatorVersion::V2
+        } else if value.version == v3::VERSION {
+            AuthenticatorVersion::V3
+        } else if value.version == v4::VERSION {
+            AuthenticatorVersion::V4
+        } else if value.version == v5::VERSION {
+            AuthenticatorVersion::V5
+        } else if value.version == v6::VERSION {
+            AuthenticatorVersion::V6
+        } else {
+            AuthenticatorVersion::UNKNOWN
+        }
+    }
+}
+
+impl From<u8> for AuthenticatorVersion {
+    fn from(value: u8) -> Self {
+        if value == v1::VERSION {
+            AuthenticatorVersion::V1
+        } else if value == v2::VERSION {
+            AuthenticatorVersion::V2
+        } else if value == v3::VERSION {
+            AuthenticatorVersion::V3
+        } else if value == v4::VERSION {
+            AuthenticatorVersion::V4
+        } else if value == v5::VERSION {
+            AuthenticatorVersion::V5
+        } else if value == v6::VERSION {
+            AuthenticatorVersion::V6
+        } else {
+            AuthenticatorVersion::UNKNOWN
+        }
+    }
+}
+
+impl From<&str> for AuthenticatorVersion {
+    fn from(value: &str) -> Self {
+        let Ok(semver) = semver::Version::parse(value) else {
+            return Self::UNKNOWN;
+        };
+
+        semver.into()
+    }
+}
+
+impl From<Option<&String>> for AuthenticatorVersion {
+    fn from(value: Option<&String>) -> Self {
+        match value {
+            None => Self::UNKNOWN,
+            Some(value) => value.as_str().into(),
+        }
+    }
+}
+
+impl From<String> for AuthenticatorVersion {
+    fn from(value: String) -> Self {
+        Self::from(value.as_str())
+    }
+}
+
+impl From<Option<String>> for AuthenticatorVersion {
+    fn from(value: Option<String>) -> Self {
+        value.as_ref().into()
+    }
+}
+
+impl From<semver::Version> for AuthenticatorVersion {
+    fn from(semver: semver::Version) -> Self {
+        if semver < AuthenticatorVersion::V1.release_version() {
+            return Self::UNKNOWN;
+        }
+        if semver < AuthenticatorVersion::V2.release_version() {
+            return Self::V1;
+        }
+        if semver < AuthenticatorVersion::V3.release_version() {
+            return Self::V2;
+        }
+        if semver < AuthenticatorVersion::V4.release_version() {
+            return Self::V3;
+        }
+        if semver < AuthenticatorVersion::V5.release_version() {
+            return Self::V4;
+        }
+        if semver < AuthenticatorVersion::V6.release_version() {
+            return Self::V5;
+        }
+        // if provided version is higher (or equal) to release version of V6,
+        // we return the latest (i.e. v6)
+
+        debug_assert_eq!(
+            Self::V6,
+            Self::LATEST,
+            "a new AuthenticatorVersion variant has been introduced without adjusting the `From<semver::Version>` trait"
+        );
+        Self::LATEST
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::super::latest;
+    use super::*;
+
+    #[test]
+    fn strum_display() {
+        // sanity check on formatting and casing
+        assert_eq!("v1", AuthenticatorVersion::V1.to_string());
+        assert_eq!("v2", AuthenticatorVersion::V2.to_string());
+        assert_eq!("unknown", AuthenticatorVersion::UNKNOWN.to_string());
+    }
+
+    #[test]
+    fn u8_conversion() {
+        assert_eq!(AuthenticatorVersion::V1, AuthenticatorVersion::from(1u8));
+        assert_eq!(AuthenticatorVersion::V2, AuthenticatorVersion::from(2u8));
+
+        assert_eq!(
+            AuthenticatorVersion::UNKNOWN,
+            AuthenticatorVersion::from(latest::VERSION + 1)
+        );
+        assert_eq!(
+            AuthenticatorVersion::UNKNOWN,
+            AuthenticatorVersion::from(0u8)
+        );
+        assert_eq!(
+            AuthenticatorVersion::UNKNOWN,
+            AuthenticatorVersion::from(255u8)
+        );
+    }
+
+    #[test]
+    fn semver_checks() {
+        assert_eq!(AuthenticatorVersion::UNKNOWN, "1.1.4".into());
+        assert_eq!(AuthenticatorVersion::UNKNOWN, "0.1.0".into());
+        assert_eq!(AuthenticatorVersion::UNKNOWN, "1.0.4".into());
+        assert_eq!(AuthenticatorVersion::V1, "1.1.5".into());
+        assert_eq!(AuthenticatorVersion::V1, "1.1.6".into());
+        assert_eq!(AuthenticatorVersion::V1, "1.1.8".into());
+        assert_eq!(AuthenticatorVersion::V2, "1.1.9".into());
+        assert_eq!(AuthenticatorVersion::V3, "1.1.10".into());
+        assert_eq!(AuthenticatorVersion::V3, "1.1.11".into());
+        assert_eq!(AuthenticatorVersion::V3, "1.1.60".into());
+        assert_eq!(AuthenticatorVersion::V4, "1.2.0".into());
+        assert_eq!(AuthenticatorVersion::V4, "1.2.1".into());
+        assert_eq!(AuthenticatorVersion::V4, "1.5.1".into());
+        assert_eq!(AuthenticatorVersion::V4, "1.6.0".into());
+        assert_eq!(AuthenticatorVersion::V5, "1.6.1".into());
+        assert_eq!(AuthenticatorVersion::V5, "1.6.11".into());
+        assert_eq!(AuthenticatorVersion::V5, "1.7.0".into());
+        assert_eq!(AuthenticatorVersion::V5, "1.16.11".into());
+        assert_eq!(AuthenticatorVersion::V5, "1.17.0".into());
+        assert_eq!(AuthenticatorVersion::V5, "1.22.0".into());
+        assert_eq!(AuthenticatorVersion::V6, "1.23.0".into());
+        assert_eq!(AuthenticatorVersion::V6, "1.23.1".into());
+        assert_eq!(AuthenticatorVersion::V6, "1.24.0".into());
+    }
+}
@@ -7,20 +7,16 @@ license.workspace = true
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

 [dependencies]
-bip39 = { workspace = true }
+async-trait = { workspace = true }
 log = { workspace = true }
 rand = { workspace = true }
 thiserror = { workspace = true }
-url = { workspace = true }
-zeroize = { workspace = true }

 nym-credential-storage = { path = "../credential-storage" }
 nym-credentials = { path = "../credentials" }
 nym-credentials-interface = { path = "../credentials-interface" }
 nym-crypto = { path = "../crypto", features = ["rand", "asymmetric", "stream_cipher", "aes", "hashing"] }
-nym-ecash-contract-common = { path = "../cosmwasm-smart-contracts/ecash-contract" }
 nym-ecash-time = { path = "../ecash-time" }
-nym-network-defaults = { path = "../network-defaults" }
 nym-task = { path = "../task" }
 nym-validator-client = { path = "../client-libs/validator-client", default-features = false }

@@ -21,6 +21,9 @@ pub enum BandwidthControllerError {
    #[error("There was a credential storage error - {0}")]
    CredentialStorageError(Box<dyn std::error::Error + Send + Sync>),

+    #[error("retrieved upgrade mode token is not a valid String")]
+    MalformedUpgradeModeToken,
+
    #[error("the credential storage does not contain any usable credentials")]
    NoCredentialsAvailable,

@@ -12,7 +12,7 @@ use crate::utils::{
    ApiClientsWrapper,
 };
 use log::error;
-use nym_credential_storage::models::RetrievedTicketbook;
+use nym_credential_storage::models::{EmergencyCredential, RetrievedTicketbook};
 use nym_credential_storage::storage::Storage;
 use nym_credentials::ecash::bandwidth::CredentialSpendingData;
 use nym_credentials_interface::{
@@ -23,10 +23,12 @@ use nym_validator_client::nym_api::EpochId;
 use nym_validator_client::nyxd::contract_traits::DkgQueryClient;

 pub use event::BandwidthStatusMessage;
+pub use traits::{BandwidthTicketProvider, DEFAULT_TICKETS_TO_SPEND};

 pub mod acquire;
 pub mod error;
 mod event;
+mod traits;
 mod utils;

 #[derive(Debug)]
@@ -218,6 +220,19 @@ impl<C, St: Storage> BandwidthController<C, St> {
            }
        }
    }
+
+    pub async fn get_emergency_credential(
+        &self,
+        typ: &str,
+    ) -> Result<Option<EmergencyCredential>, BandwidthControllerError>
+    where
+        <St as Storage>::StorageError: Send + Sync + 'static,
+    {
+        self.storage
+            .get_emergency_credential(typ)
+            .await
+            .map_err(BandwidthControllerError::credential_storage_error)
+    }
 }

 impl<C, St> Clone for BandwidthController<C, St>
@@ -0,0 +1,59 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use async_trait::async_trait;
+use nym_credential_storage::storage::Storage;
+use nym_credentials_interface::TicketType;
+use nym_crypto::asymmetric::ed25519;
+use nym_validator_client::nyxd::contract_traits::DkgQueryClient;
+
+use crate::{error::BandwidthControllerError, BandwidthController, PreparedCredential};
+
+pub const DEFAULT_TICKETS_TO_SPEND: u32 = 1;
+
+// TODO: this does not really belong here
+pub const UPGRADE_MODE_JWT_TYPE: &str = "UPGRADE_MODE_JWT";
+
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
+pub trait BandwidthTicketProvider: Send + Sync {
+    async fn get_ecash_ticket(
+        &self,
+        ticket_type: TicketType,
+        gateway_id: ed25519::PublicKey,
+        tickets_to_spend: u32,
+    ) -> Result<PreparedCredential, BandwidthControllerError>;
+
+    async fn get_upgrade_mode_token(&self) -> Result<Option<String>, BandwidthControllerError>;
+}
+
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
+impl<C, St> BandwidthTicketProvider for BandwidthController<C, St>
+where
+    C: DkgQueryClient + Sync + Send,
+    St: nym_credential_storage::storage::Storage,
+    <St as Storage>::StorageError: Send + Sync + 'static,
+{
+    async fn get_ecash_ticket(
+        &self,
+        ticket_type: TicketType,
+        gateway_id: ed25519::PublicKey,
+        tickets_to_spend: u32,
+    ) -> Result<PreparedCredential, BandwidthControllerError> {
+        self.prepare_ecash_ticket(ticket_type, gateway_id.to_bytes(), tickets_to_spend)
+            .await
+    }
+
+    async fn get_upgrade_mode_token(&self) -> Result<Option<String>, BandwidthControllerError> {
+        let Some(emergency_credential) =
+            self.get_emergency_credential(UPGRADE_MODE_JWT_TYPE).await?
+        else {
+            return Ok(None);
+        };
+        // upgrade mode credential is just a simple stringified JWT
+        let token = String::from_utf8(emergency_credential.data.content)
+            .map_err(|_| BandwidthControllerError::MalformedUpgradeModeToken)?;
+        Ok(Some(token))
+    }
+}
@@ -13,7 +13,7 @@ use nym_credentials_interface::{
 };
 use nym_ecash_time::Date;
 use nym_validator_client::coconut::all_ecash_api_clients;
-use nym_validator_client::nym_api::EpochId;
+use nym_validator_client::nym_api::{EpochId, NymApiClientExt};
 use nym_validator_client::nyxd::contract_traits::DkgQueryClient;
 use nym_validator_client::EcashApiClient;
 use rand::prelude::SliceRandom;
@@ -207,7 +207,7 @@ where
    <St as Storage>::StorageError: Send + Sync + 'static,
 {
    if let Some(stored) = storage
-        .get_expiration_date_signatures(expiration_date)
+        .get_expiration_date_signatures(expiration_date, epoch_id)
        .await
        .map_err(BandwidthControllerError::credential_storage_error)?
    {
@@ -220,7 +220,7 @@ where
        ecash_apis,
        |api| async move {
            api.api_client
-                .global_expiration_date_signatures(Some(expiration_date))
+                .global_expiration_date_signatures(Some(expiration_date), Some(epoch_id))
                .await
        },
        format!("aggregated coin index signatures for date {expiration_date}"),
@@ -1,8 +1,8 @@
+use clap::Args;
 use clap::builder::Command;
 use clap::clap_derive::ValueEnum;
-use clap::Args;
-use clap_complete::generator::generate;
 use clap_complete::Shell as ClapShell;
+use clap_complete::generator::generate;
 use std::io;

 pub fn fig_generate(command: &mut Command, name: &str) {
@@ -3,7 +3,7 @@ name = "nym-client-core"
 version = "1.1.15"
 authors = ["Dave Hrycyszyn <futurechimp@users.noreply.github.com>"]
 edition = "2021"
-rust-version = "1.76"
+rust-version = "1.85"
 license.workspace = true

 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -13,6 +13,7 @@ async-trait = { workspace = true }
 base64 = { workspace = true }
 bs58 = { workspace = true }
 clap = { workspace = true, optional = true }
+cfg-if = { workspace = true }
 comfy-table = { workspace = true, optional = true }
 futures = { workspace = true }
 humantime = { workspace = true }
@@ -35,7 +36,7 @@ nym-bandwidth-controller = { path = "../bandwidth-controller" }
 nym-crypto = { path = "../crypto" }
 nym-gateway-client = { path = "../client-libs/gateway-client" }
 nym-gateway-requests = { path = "../gateway-requests" }
-nym-http-api-client = { path = "../http-api-client" }
+nym-http-api-client = { path = "../http-api-client", features = ["network-defaults"] }
 nym-nonexhaustive-delayqueue = { path = "../nonexhaustive-delayqueue" }
 nym-sphinx = { path = "../nymsphinx" }
 nym-statistics-common = { path = "../statistics" }
@@ -52,6 +53,7 @@ nym-client-core-config-types = { path = "./config-types", features = [
 nym-client-core-surb-storage = { path = "./surb-storage" }
 nym-client-core-gateways-storage = { path = "./gateways-storage" }
 nym-ecash-time = { path = "../ecash-time" }
+nym-mixnet-contract-common = { path = "../cosmwasm-smart-contracts/mixnet-contract" }

 [target."cfg(not(target_arch = \"wasm32\"))".dependencies]
 nym-mixnet-client = { path = "../client-libs/mixnet-client", default-features = false }
@@ -67,7 +69,6 @@ workspace = true
 [target."cfg(not(target_arch = \"wasm32\"))".dependencies.hyper-util]
 workspace = true
 features = ["tokio"]
-###

 [target."cfg(not(target_arch = \"wasm32\"))".dependencies.tokio-stream]
 workspace = true
@@ -101,7 +102,7 @@ workspace = true
 features = ["tokio"]

 [target."cfg(target_arch = \"wasm32\")".dependencies.gloo-timers]
-version = "0.3.0"
+workspace = true
 features = ["futures"]

 [target."cfg(target_arch = \"wasm32\")".dependencies.wasm-utils]
@@ -112,6 +113,10 @@ features = ["websocket"]
 workspace = true
 features = ["wasm-bindgen"]

+[target."cfg(target_arch = \"wasm32\")".dependencies.tokio_with_wasm]
+workspace = true
+features = ["full"]
+
 [dev-dependencies]
 tempfile = { workspace = true }

@@ -123,3 +128,6 @@ fs-surb-storage = ["nym-client-core-surb-storage/fs-surb-storage"]
 fs-gateways-storage = ["nym-client-core-gateways-storage/fs-gateways-storage"]
 wasm = ["nym-gateway-client/wasm"]
 metrics-server = []
+
+[lints]
+workspace = true
@@ -707,13 +707,10 @@ pub struct DebugConfig {

    /// Defines all configuration options related to reply SURBs.
    pub reply_surbs: ReplySurbs,
-
    /// Defines all configuration options related to stats reporting.
    pub stats_reporting: StatsReporting,
-
    /// Defines all configuration options related to the forget me flag.
    pub forget_me: ForgetMe,
-
    /// Defines all configuration options related to the remember me flag.
    pub remember_me: RememberMe,
 }
@@ -543,10 +543,8 @@ pub struct DebugConfigV6 {

    /// Defines all configuration options related to reply SURBs.
    pub reply_surbs: ReplySurbsV6,
-
    /// Defines all configuration options related to stats reporting.
    pub stats_reporting: StatsReportingV6,
-
    /// Defines all configuration options related to the forget me flag.
    pub forget_me: ForgetMeV6,

@@ -3,6 +3,7 @@ name = "nym-client-core-gateways-storage"
 version = "0.1.0"
 edition = "2021"
 license.workspace = true
+rust-version.workspace = true

 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

@@ -26,6 +27,7 @@ features = ["runtime-tokio-rustls", "sqlite", "macros", "migrate", "time"]
 optional = true

 [build-dependencies]
+anyhow = { workspace = true }
 tokio = { workspace = true, features = ["rt-multi-thread", "macros"] }
 sqlx = { workspace = true, features = [
    "runtime-tokio-rustls",
@@ -2,23 +2,30 @@
 // SPDX-License-Identifier: Apache-2.0

 #[tokio::main]
-async fn main() {
+async fn main() -> anyhow::Result<()> {
    #[cfg(feature = "fs-gateways-storage")]
    {
+        use anyhow::Context;
        use sqlx::{Connection, SqliteConnection};
        use std::env;

-        let out_dir = env::var("OUT_DIR").unwrap();
+        let out_dir = env::var("OUT_DIR")?;
        let database_path = format!("{out_dir}/gateways-storage-example.sqlite");

+        // remove the db file if it already existed from previous build
+        // in case it was from a different branch
+        if std::fs::exists(&database_path)? {
+            std::fs::remove_file(&database_path)?;
+        }
+
        let mut conn = SqliteConnection::connect(&format!("sqlite://{database_path}?mode=rwc"))
            .await
-            .expect("Failed to create SQLx database connection");
+            .context("Failed to create SQLx database connection")?;

        sqlx::migrate!("./fs_gateways_migrations")
            .run(&mut conn)
            .await
-            .expect("Failed to perform SQLx migrations");
+            .context("Failed to perform SQLx migrations")?;

        #[cfg(target_family = "unix")]
        println!("cargo:rustc-env=DATABASE_URL=sqlite://{}", &database_path);
@@ -28,4 +35,6 @@ async fn main() {
        // not a valid windows path... but hey, it works...
        println!("cargo:rustc-env=DATABASE_URL=sqlite:///{}", &database_path);
    }
+
+    Ok(())
 }
@@ -31,7 +31,6 @@ impl StorageManager {
                }
            })?;
        }
-
        let opts = sqlx::sqlite::SqliteConnectOptions::new()
            .journal_mode(sqlx::sqlite::SqliteJournalMode::Wal)
            .synchronous(SqliteSynchronous::Normal)
@@ -114,13 +114,12 @@ where
        })?;
        hardcoded_topology.entry_capable_nodes().cloned().collect()
    } else {
-        let mut rng = rand::thread_rng();
        crate::init::helpers::gateways_for_init(
-            &mut rng,
            &core.client.nym_api_urls,
            user_agent,
            core.debug.topology.minimum_gateway_performance,
            core.debug.topology.ignore_ingress_epoch_role,
+            None,
        )
        .await?
    };
@@ -58,6 +58,7 @@ where
        Some(data) => data,
        None => {
            // SAFETY: one of those arguments must have been set
+            #[allow(clippy::unwrap_used)]
            fs::read(common_args.signatures_path.unwrap())?
        }
    };
@@ -64,6 +64,7 @@ where
        Some(data) => data,
        None => {
            // SAFETY: one of those arguments must have been set
+            #[allow(clippy::unwrap_used)]
            fs::read(common_args.credential_path.unwrap())?
        }
    };
@@ -58,6 +58,7 @@ where
        Some(data) => data,
        None => {
            // SAFETY: one of those arguments must have been set
+            #[allow(clippy::unwrap_used)]
            fs::read(common_args.signatures_path.unwrap())?
        }
    };
@@ -58,6 +58,7 @@ where
        Some(data) => data,
        None => {
            // SAFETY: one of those arguments must have been set
+            #[allow(clippy::unwrap_used)]
            fs::read(common_args.key_path.unwrap())?
        }
    };
@@ -81,6 +81,10 @@ pub struct CommonClientInitArgs {
    #[cfg_attr(feature = "cli", clap(long, hide = true))]
    pub enabled_credentials_mode: Option<bool>,

+    /// Change the default minimum node performance used during initial node selection filtering.
+    #[cfg_attr(feature = "cli", clap(long, hide = true))]
+    pub minimum_gateway_performance: Option<u8>,
+
    /// Mostly debug-related option to increase default traffic rate so that you would not need to
    /// modify config post init
    #[cfg_attr(feature = "cli", clap(long, hide = true))]
@@ -173,13 +177,16 @@ where
        })?;
        hardcoded_topology.entry_capable_nodes().cloned().collect()
    } else {
-        let mut rng = rand::thread_rng();
+        let minimum_performance = common_args
+            .minimum_gateway_performance
+            .unwrap_or(core.debug.topology.minimum_gateway_performance);
+
        crate::init::helpers::gateways_for_init(
-            &mut rng,
            &core.client.nym_api_urls,
            user_agent,
-            core.debug.topology.minimum_gateway_performance,
+            minimum_performance,
            core.debug.topology.ignore_ingress_epoch_role,
+            None,
        )
        .await?
    };
@@ -7,11 +7,12 @@ use super::statistics_control::StatisticsControl;
 use crate::client::base_client::storage::helpers::store_client_keys;
 use crate::client::base_client::storage::MixnetClientStorage;
 use crate::client::cover_traffic_stream::LoopCoverTrafficStream;
+use crate::client::event_control::EventControl;
 use crate::client::inbound_messages::{InputMessage, InputMessageReceiver, InputMessageSender};
 use crate::client::key_manager::persistence::KeyStore;
 use crate::client::key_manager::ClientKeys;
 use crate::client::mix_traffic::transceiver::{GatewayReceiver, GatewayTransceiver, RemoteGateway};
-use crate::client::mix_traffic::{BatchMixMessageSender, MixTrafficController};
+use crate::client::mix_traffic::{BatchMixMessageSender, MixTrafficController, MixTrafficEvent};
 use crate::client::real_messages_control;
 use crate::client::real_messages_control::RealMessagesController;
 use crate::client::received_buffer::{
@@ -27,13 +28,13 @@ use crate::client::topology_control::nym_api_provider::NymApiTopologyProvider;
 use crate::client::topology_control::{
    TopologyAccessor, TopologyRefresher, TopologyRefresherConfig,
 };
+use crate::config;
 use crate::config::{Config, DebugConfig};
 use crate::error::ClientCoreError;
 use crate::init::{
    setup_gateway,
    types::{GatewaySetup, InitialisationResult},
 };
-use crate::{config, spawn_future};
 use futures::channel::mpsc;
 use nym_bandwidth_controller::BandwidthController;
 use nym_client_core_config_types::{ForgetMe, RememberMe};
@@ -48,16 +49,15 @@ 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_statistics_common::clients::ClientStatsSender;
 use nym_statistics_common::generate_client_stats_id;
 use nym_task::connections::{ConnectionCommandReceiver, ConnectionCommandSender, LaneQueueLengths};
-use nym_task::{TaskClient, TaskHandle};
+use nym_task::ShutdownTracker;
 use nym_topology::provider_trait::TopologyProvider;
 use nym_topology::HardcodedTopologyProvider;
 use nym_validator_client::nym_api::NymApiClientExt;
-use nym_validator_client::{nyxd::contract_traits::DkgQueryClient, NymApiClient, UserAgent};
+use nym_validator_client::{nyxd::contract_traits::DkgQueryClient, UserAgent};
 use rand::prelude::SliceRandom;
 use rand::rngs::OsRng;
 use rand::thread_rng;
@@ -67,9 +67,16 @@ use std::path::Path;
 use std::sync::Arc;
 use time::OffsetDateTime;
 use tokio::sync::mpsc::Sender;
-use tracing::*;
 use url::Url;

+#[cfg(target_arch = "wasm32")]
+#[cfg(debug_assertions)]
+use wasm_utils::console_log;
+
+/// Default number of retries for Nym API requests when using network details with domain fronting.
+/// This allows the client to try alternative URLs if the primary endpoint is unavailable.
+const DEFAULT_NYM_API_RETRIES: usize = 3;
+
 #[cfg(all(
    not(target_arch = "wasm32"),
    feature = "fs-surb-storage",
@@ -80,10 +87,28 @@ pub mod non_wasm_helpers;
 pub mod helpers;
 pub mod storage;

+#[derive(Clone, Copy, Debug)]
+pub enum MixnetClientEvent {
+    Traffic(MixTrafficEvent),
+}
+
+pub type EventReceiver = mpsc::UnboundedReceiver<MixnetClientEvent>;
+#[derive(Clone)]
+pub struct EventSender(pub mpsc::UnboundedSender<MixnetClientEvent>);
+
+impl EventSender {
+    pub fn send(&self, event: MixnetClientEvent) {
+        if let Err(err) = self.0.unbounded_send(event) {
+            tracing::warn!("Failed to send error event. The caller event reader was closed: {err}");
+        }
+    }
+}
+
 #[derive(Clone)]
 pub struct ClientInput {
    pub connection_command_sender: ConnectionCommandSender,
    pub input_sender: InputMessageSender,
+    pub client_request_sender: ClientRequestSender,
 }

 impl ClientInput {
@@ -95,7 +120,6 @@ impl ClientInput {
    }
 }

-#[derive(Clone)]
 pub struct ClientOutput {
    pub received_buffer_request_sender: ReceivedBufferRequestSender,
 }
@@ -135,9 +159,11 @@ pub enum ClientInputStatus {
 }

 impl ClientInputStatus {
+    #[allow(clippy::panic)]
    pub fn register_producer(&mut self) -> ClientInput {
        match std::mem::replace(self, ClientInputStatus::Connected) {
            ClientInputStatus::AwaitingProducer { client_input } => client_input,
+            // critical failure implying misuse of software
            ClientInputStatus::Connected => panic!("producer was already registered before"),
        }
    }
@@ -149,9 +175,11 @@ pub enum ClientOutputStatus {
 }

 impl ClientOutputStatus {
+    #[allow(clippy::panic)]
    pub fn register_consumer(&mut self) -> ClientOutput {
        match std::mem::replace(self, ClientOutputStatus::Connected) {
            ClientOutputStatus::AwaitingConsumer { client_output } => client_output,
+            // critical failure implying misuse of software
            ClientOutputStatus::Connected => panic!("consumer was already registered before"),
        }
    }
@@ -188,10 +216,14 @@ pub struct BaseClientBuilder<C, S: MixnetClientStorage> {
    client_store: S,
    dkg_query_client: Option<C>,

+    // Optional API URLs for domain fronting support
+    nym_api_urls: Option<Vec<nym_network_defaults::ApiUrl>>,
+
    wait_for_gateway: bool,
    custom_topology_provider: Option<Box<dyn TopologyProvider + Send + Sync>>,
    custom_gateway_transceiver: Option<Box<dyn GatewayTransceiver + Send>>,
-    shutdown: Option<TaskClient>,
+    shutdown: Option<ShutdownTracker>,
+    event_tx: Option<EventSender>,
    user_agent: Option<UserAgent>,

    setup_method: GatewaySetup,
@@ -216,10 +248,12 @@ where
            config: base_config,
            client_store,
            dkg_query_client,
+            nym_api_urls: None,
            wait_for_gateway: false,
            custom_topology_provider: None,
            custom_gateway_transceiver: None,
            shutdown: None,
+            event_tx: None,
            user_agent: None,
            setup_method: GatewaySetup::MustLoad { gateway_id: None },
            #[cfg(unix)]
@@ -237,6 +271,16 @@ where
        self
    }

+    /// Set Nym API URLs for domain fronting support.
+    ///
+    /// When provided, the client will use these API URLs (which include front_hosts)
+    /// to construct HTTP clients with domain fronting enabled.
+    #[must_use]
+    pub fn with_nym_api_urls(mut self, nym_api_urls: Vec<nym_network_defaults::ApiUrl>) -> Self {
+        self.nym_api_urls = Some(nym_api_urls);
+        self
+    }
+
    #[must_use]
    pub fn with_forget_me(mut self, forget_me: &ForgetMe) -> Self {
        self.config.debug.forget_me = *forget_me;
@@ -277,11 +321,17 @@ where
    }

    #[must_use]
-    pub fn with_shutdown(mut self, shutdown: TaskClient) -> Self {
+    pub fn with_shutdown(mut self, shutdown: ShutdownTracker) -> Self {
        self.shutdown = Some(shutdown);
        self
    }

+    #[must_use]
+    pub fn with_event_tx(mut self, event_tx: EventSender) -> Self {
+        self.event_tx = Some(event_tx);
+        self
+    }
+
    #[must_use]
    pub fn with_user_agent(mut self, user_agent: UserAgent) -> Self {
        self.user_agent = Some(user_agent);
@@ -312,6 +362,18 @@ where
        details.client_address()
    }

+    fn start_event_control(
+        parent_event_tx: Option<EventSender>,
+        children_event_rx: EventReceiver,
+        shutdown_tracker: &ShutdownTracker,
+    ) {
+        let event_control = EventControl::new(parent_event_tx, children_event_rx);
+        shutdown_tracker.try_spawn_named_with_shutdown(
+            async move { event_control.run().await },
+            "EventControl",
+        );
+    }
+
    // future constantly pumping loop cover traffic at some specified average rate
    // the pumped traffic goes to the MixTrafficController
    fn start_cover_traffic_stream(
@@ -321,11 +383,11 @@ where
        topology_accessor: TopologyAccessor,
        mix_tx: BatchMixMessageSender,
        stats_tx: ClientStatsSender,
-        task_client: TaskClient,
+        shutdown_tracker: &ShutdownTracker,
    ) {
-        info!("Starting loop cover traffic stream...");
+        tracing::info!("Starting loop cover traffic stream...");

-        let stream = LoopCoverTrafficStream::new(
+        let mut stream = LoopCoverTrafficStream::new(
            ack_key,
            debug_config.acknowledgements.average_ack_delay,
            mix_tx,
@@ -334,10 +396,9 @@ where
            debug_config.traffic,
            debug_config.cover_traffic,
            stats_tx,
-            task_client,
        );
-
-        stream.start();
+        shutdown_tracker
+            .try_spawn_named_with_shutdown(async move { stream.run().await }, "CoverTrafficStream");
    }

    #[allow(clippy::too_many_arguments)]
@@ -353,13 +414,12 @@ where
        reply_controller_receiver: ReplyControllerReceiver,
        lane_queue_lengths: LaneQueueLengths,
        client_connection_rx: ConnectionCommandReceiver,
-        task_client: TaskClient,
-        packet_type: PacketType,
        stats_tx: ClientStatsSender,
+        shutdown_tracker: &ShutdownTracker,
    ) {
-        info!("Starting real traffic stream...");
+        tracing::info!("Starting real traffic stream...");

-        RealMessagesController::new(
+        let real_messages_controller = RealMessagesController::new(
            controller_config,
            key_rotation_config,
            ack_receiver,
@@ -372,9 +432,63 @@ where
            lane_queue_lengths,
            client_connection_rx,
            stats_tx,
-            task_client,
-        )
-        .start(packet_type);
+            shutdown_tracker.clone_shutdown_token(),
+        );
+
+        // break out all the subtasks
+        let (mut out_queue_control, mut reply_controller, ack_controller) =
+            real_messages_controller.into_tasks();
+        let (
+            mut ack_listener,
+            mut input_listener,
+            mut retransmission_listener,
+            mut sent_notification_listener,
+            mut ack_action_controller,
+        ) = ack_controller.into_tasks();
+
+        shutdown_tracker.try_spawn_named(
+            async move { out_queue_control.run().await },
+            "RealMessagesController::OutQueueControl",
+        );
+
+        let shutdown_token = shutdown_tracker.clone_shutdown_token();
+        shutdown_tracker.try_spawn_named(
+            async move { reply_controller.run(shutdown_token).await },
+            "RealMessagesController::ReplyController",
+        );
+
+        let shutdown_token = shutdown_tracker.clone_shutdown_token();
+        shutdown_tracker.try_spawn_named(
+            async move { ack_listener.run(shutdown_token).await },
+            "AcknowledgementController::AcknowledgementListener",
+        );
+
+        let shutdown_token = shutdown_tracker.clone_shutdown_token();
+        shutdown_tracker.try_spawn_named(
+            async move { input_listener.run(shutdown_token).await },
+            "AcknowledgementController::InputMessageListener",
+        );
+
+        let shutdown_token = shutdown_tracker.clone_shutdown_token();
+        shutdown_tracker.try_spawn_named(
+            async move { retransmission_listener.run(shutdown_token).await },
+            "AcknowledgementController::RetransmissionRequestListener",
+        );
+
+        shutdown_tracker.try_spawn_named_with_shutdown(
+            async move {
+                sent_notification_listener.run().await;
+            },
+            "AcknowledgementController::SentNotificationListener",
+        );
+
+        let shutdown_token = shutdown_tracker.clone_shutdown_token();
+        shutdown_tracker.try_spawn_named(
+            async move { ack_action_controller.run(shutdown_token).await },
+            "AcknowledgementController::ActionController",
+        );
+
+        // .start(packet_type);
    }

    // buffer controlling all messages fetched from provider
@@ -385,21 +499,29 @@ where
        mixnet_receiver: MixnetMessageReceiver,
        reply_key_storage: SentReplyKeys,
        reply_controller_sender: ReplyControllerSender,
-        shutdown: TaskClient,
        metrics_reporter: ClientStatsSender,
+        shutdown_tracker: &ShutdownTracker,
    ) {
-        info!("Starting received messages buffer controller...");
-        let controller: ReceivedMessagesBufferController<SphinxMessageReceiver> =
-            ReceivedMessagesBufferController::new(
-                local_encryption_keypair,
-                query_receiver,
-                mixnet_receiver,
-                reply_key_storage,
-                reply_controller_sender,
-                metrics_reporter,
-                shutdown,
-            );
-        controller.start()
+        tracing::info!("Starting received messages buffer controller...");
+        let controller = ReceivedMessagesBufferController::<SphinxMessageReceiver>::new(
+            local_encryption_keypair,
+            query_receiver,
+            mixnet_receiver,
+            reply_key_storage,
+            reply_controller_sender,
+            metrics_reporter,
+            shutdown_tracker.clone_shutdown_token(),
+        );
+        let (mut msg_receiver, mut req_receiver) = controller.into_tasks();
+
+        shutdown_tracker.try_spawn_named(
+            async move { msg_receiver.run().await },
+            "ReceivedMessagesBufferController::FragmentedMessageReceiver",
+        );
+        shutdown_tracker.try_spawn_named(
+            async move { req_receiver.run().await },
+            "ReceivedMessagesBufferController::RequestReceiver",
+        );
    }

    #[allow(clippy::too_many_arguments)]
@@ -411,7 +533,7 @@ where
        packet_router: PacketRouter,
        stats_reporter: ClientStatsSender,
        #[cfg(unix)] connection_fd_callback: Option<Arc<dyn Fn(RawFd) + Send + Sync>>,
-        shutdown: TaskClient,
+        shutdown_tracker: &ShutdownTracker,
    ) -> Result<GatewayClient<C, S::CredentialStore>, ClientCoreError>
    where
        <S::KeyStore as KeyStore>::StorageError: Send + Sync + 'static,
@@ -430,7 +552,7 @@ where
                    packet_router,
                    bandwidth_controller,
                    stats_reporter,
-                    shutdown,
+                    shutdown_tracker.clone_shutdown_token(),
                )
            } else {
                let cfg = GatewayConfig::new(
@@ -455,7 +577,7 @@ where
                    stats_reporter,
                    #[cfg(unix)]
                    connection_fd_callback,
-                    shutdown,
+                    shutdown_tracker.clone_shutdown_token(),
                )
            };

@@ -491,7 +613,7 @@ where
            details_store
                .upgrade_stored_remote_gateway_key(gateway_client.gateway_identity(), &updated_key)
                .await.map_err(|err| {
-                error!("failed to store upgraded gateway key! this connection might be forever broken now: {err}");
+                tracing::error!("failed to store upgraded gateway key! this connection might be forever broken now: {err}");
                ClientCoreError::GatewaysDetailsStoreError { source: Box::new(err) }
            })?
        }
@@ -518,7 +640,7 @@ where
        packet_router: PacketRouter,
        stats_reporter: ClientStatsSender,
        #[cfg(unix)] connection_fd_callback: Option<Arc<dyn Fn(RawFd) + Send + Sync>>,
-        mut shutdown: TaskClient,
+        shutdown_tracker: &ShutdownTracker,
    ) -> Result<Box<dyn GatewayTransceiver + Send>, ClientCoreError>
    where
        <S::KeyStore as KeyStore>::StorageError: Send + Sync + 'static,
@@ -535,7 +657,6 @@ where
                Err(ClientCoreError::CustomGatewaySelectionExpected)
            } else {
                // and make sure to invalidate the task client, so we wouldn't cause premature shutdown
-                shutdown.disarm();
                custom_gateway_transceiver.set_packet_router(packet_router)?;
                Ok(custom_gateway_transceiver)
            };
@@ -551,7 +672,7 @@ where
            stats_reporter,
            #[cfg(unix)]
            connection_fd_callback,
-            shutdown,
+            shutdown_tracker,
        )
        .await?;

@@ -562,7 +683,7 @@ where
        custom_provider: Option<Box<dyn TopologyProvider + Send + Sync>>,
        config_topology: config::Topology,
        nym_api_urls: Vec<Url>,
-        nym_api_client: NymApiClient,
+        nym_api_client: nym_http_api_client::Client,
    ) -> Box<dyn TopologyProvider + Send + Sync> {
        // if no custom provider was ... provided ..., create one using nym-api
        custom_provider.unwrap_or_else(|| {
@@ -582,26 +703,24 @@ where
        topology_accessor: TopologyAccessor,
        local_gateway: NodeIdentity,
        wait_for_gateway: bool,
-        mut task_client: TaskClient,
+        shutdown_tracker: &ShutdownTracker,
    ) -> Result<(), ClientCoreError> {
        let topology_refresher_config =
            TopologyRefresherConfig::new(topology_config.topology_refresh_rate);

        if topology_config.disable_refreshing {
            // if we're not spawning the refresher, don't cause shutdown immediately
-            info!("The background topology refesher is not going to be started");
-            task_client.disarm();
+            tracing::info!("The background topology refresher is not going to be started");
        }

        let mut topology_refresher = TopologyRefresher::new(
            topology_refresher_config,
            topology_accessor,
            topology_provider,
-            task_client,
        );
        // before returning, block entire runtime to refresh the current network view so that any
        // components depending on topology would see a non-empty view
-        info!("Obtaining initial network topology");
+        tracing::info!("Obtaining initial network topology");
        topology_refresher.try_refresh().await;

        if let Err(err) = topology_refresher.ensure_topology_is_routable().await {
@@ -627,13 +746,13 @@ where
                    .wait_for_gateway(local_gateway, waiting_timeout)
                    .await
                {
-                    error!(
+                    tracing::error!(
                        "the gateway did not come back online within the specified timeout: {err}"
                    );
                    return Err(err.into());
                }
            } else {
-                error!("the gateway we're supposedly connected to does not exist. We'll not be able to send any packets to ourselves: {err}");
+                tracing::error!("the gateway we're supposedly connected to does not exist. We'll not be able to send any packets to ourselves: {err}");
                return Err(err.into());
            }
        }
@@ -641,8 +760,11 @@ where
        if !topology_config.disable_refreshing {
            // don't spawn the refresher if we don't want to be refreshing the topology.
            // only use the initial values obtained
-            info!("Starting topology refresher...");
-            topology_refresher.start();
+            tracing::info!("Starting topology refresher...");
+            shutdown_tracker.try_spawn_named_with_shutdown(
+                async move { topology_refresher.run().await },
+                "TopologyRefresher",
+            );
        }

        Ok(())
@@ -653,9 +775,9 @@ where
        user_agent: Option<UserAgent>,
        client_stats_id: String,
        input_sender: Sender<InputMessage>,
-        task_client: TaskClient,
+        shutdown_tracker: &ShutdownTracker,
    ) -> ClientStatsSender {
-        info!("Starting statistics control...");
+        tracing::info!("Starting statistics control...");
        StatisticsControl::create_and_start(
            config.debug.stats_reporting,
            user_agent
@@ -663,18 +785,30 @@ where
                .unwrap_or("unknown".to_string()),
            client_stats_id,
            input_sender.clone(),
-            task_client,
+            shutdown_tracker,
        )
    }

    fn start_mix_traffic_controller(
        gateway_transceiver: Box<dyn GatewayTransceiver + Send>,
-        shutdown: TaskClient,
+        shutdown_tracker: &ShutdownTracker,
+        event_tx: EventSender,
    ) -> (BatchMixMessageSender, ClientRequestSender) {
-        info!("Starting mix traffic controller...");
-        let (mix_traffic_controller, mix_tx, client_tx) =
-            MixTrafficController::new(gateway_transceiver, shutdown);
-        mix_traffic_controller.start();
+        tracing::info!("Starting mix traffic controller...");
+        let mut mix_traffic_controller = MixTrafficController::new(
+            gateway_transceiver,
+            shutdown_tracker.clone_shutdown_token(),
+            event_tx,
+        );
+
+        let mix_tx = mix_traffic_controller.mix_tx();
+        let client_tx = mix_traffic_controller.client_tx();
+
+        shutdown_tracker.try_spawn_named(
+            async move { mix_traffic_controller.run().await },
+            "MixTrafficController",
+        );
+
        (mix_tx, client_tx)
    }

@@ -682,7 +816,7 @@ where
    async fn setup_persistent_reply_storage(
        backend: S::ReplyStore,
        key_rotation_config: KeyRotationConfig,
-        shutdown: TaskClient,
+        shutdown_tracker: &ShutdownTracker,
    ) -> Result<CombinedReplyStorage, ClientCoreError>
    where
        <S::ReplyStore as ReplyStorageBackend>::StorageError: Sync + Send,
@@ -707,11 +841,15 @@ where
            })?;

        let store_clone = mem_store.clone();
-        spawn_future(async move {
-            persistent_storage
-                .flush_on_shutdown(store_clone, shutdown)
-                .await
-        });
+        let shutdown_token = shutdown_tracker.clone_shutdown_token();
+        shutdown_tracker.try_spawn_named(
+            async move {
+                persistent_storage
+                    .flush_on_shutdown(store_clone, shutdown_token)
+                    .await
+            },
+            "PersistentReplyStorage::flush_on_shutdown",
+        );

        Ok(mem_store)
    }
@@ -728,11 +866,11 @@ where
    {
        // if client keys do not exist already, create and persist them
        if key_store.load_keys().await.is_err() {
-            info!("could not find valid client keys - a new set will be generated");
+            tracing::info!("could not find valid client keys - a new set will be generated");
            let mut rng = OsRng;
            let keys = if let Some(derivation_material) = derivation_material {
                ClientKeys::from_master_key(&mut rng, &derivation_material)
-                    .map_err(|_| ClientCoreError::HkdfDerivationError {})?
+                    .map_err(|_| ClientCoreError::HkdfDerivationError)?
            } else {
                ClientKeys::generate_new(&mut rng)
            };
@@ -742,21 +880,75 @@ where
        setup_gateway(setup_method, key_store, details_store).await
    }

-    fn construct_nym_api_client(config: &Config, user_agent: Option<UserAgent>) -> NymApiClient {
+    fn construct_nym_api_client(
+        nym_api_urls: Option<&Vec<nym_network_defaults::ApiUrl>>,
+        config: &Config,
+        user_agent: Option<UserAgent>,
+    ) -> Result<nym_http_api_client::Client, ClientCoreError> {
+        tracing::debug!(
+            "construct_nym_api_client called with nym_api_urls: {}",
+            nym_api_urls.is_some()
+        );
+
+        // If API URLs are provided, use new_with_fronted_urls() which handles domain fronting
+        if let Some(nym_api_urls) = nym_api_urls {
+            if nym_api_urls.is_empty() {
+                tracing::warn!("Provided nym_api_urls is empty, falling back to config endpoints");
+            } else {
+                tracing::info!(
+                    "Building nym-api client from provided URLs (with domain fronting support): {} URLs",
+                    nym_api_urls.len()
+                );
+
+                let mut builder =
+                    nym_http_api_client::ClientBuilder::new_with_fronted_urls(nym_api_urls.clone())
+                        .map_err(ClientCoreError::from)?
+                        .with_retries(DEFAULT_NYM_API_RETRIES);
+
+                if let Some(user_agent) = user_agent {
+                    builder = builder.with_user_agent(user_agent);
+                }
+
+                return builder.build().map_err(ClientCoreError::from);
+            }
+        }
+
+        // Fallback to basic client for backwards compatibility
+        tracing::debug!("Building basic nym-api HTTP client from config endpoints");
+
        let mut nym_api_urls = config.get_nym_api_endpoints();
+        if nym_api_urls.is_empty() {
+            tracing::warn!("No API endpoints configured in config, this may cause issues");
+        }
        nym_api_urls.shuffle(&mut thread_rng());

+        // Convert config URLs to ApiUrl format for consistency
+        let api_urls: Vec<nym_network_defaults::ApiUrl> = nym_api_urls
+            .into_iter()
+            .map(|url| nym_network_defaults::ApiUrl {
+                url: url.to_string(),
+                front_hosts: None,
+            })
+            .collect();
+
+        tracing::debug!("Using {} config API endpoints", api_urls.len());
+
+        let mut builder = nym_http_api_client::ClientBuilder::new_with_fronted_urls(api_urls)
+            .map_err(ClientCoreError::from)?
+            .with_retries(DEFAULT_NYM_API_RETRIES)
+            .with_bincode();
+
        if let Some(user_agent) = user_agent {
-            NymApiClient::new_with_user_agent(nym_api_urls[0].clone(), user_agent)
-        } else {
-            NymApiClient::new(nym_api_urls[0].clone())
+            builder = builder.with_user_agent(user_agent);
        }
+
+        builder.build().map_err(ClientCoreError::from)
    }

    async fn determine_key_rotation_state(
-        client: &NymApiClient,
+        client: &nym_http_api_client::Client,
    ) -> Result<KeyRotationConfig, ClientCoreError> {
-        Ok(client.nym_api.get_key_rotation_info().await?.into())
+        Ok(client.get_key_rotation_info().await?.into())
    }

    pub async fn start_base(mut self) -> Result<BaseClient, ClientCoreError>
@@ -767,7 +959,12 @@ where
        <S::CredentialStore as CredentialStorage>::StorageError: Send + Sync + 'static,
        <S::GatewaysDetailsStore as GatewaysDetailsStore>::StorageError: Sync + Send,
    {
-        info!("Starting nym client");
+        tracing::info!("Starting nym client");
+        #[cfg(debug_assertions)]
+        #[cfg(target_arch = "wasm32")]
+        {
+            console_log!("Starting base Nym Client");
+        }

        // derive (or load) client keys and gateway configuration
        let init_res = Self::initialise_keys_and_gateway(
@@ -796,17 +993,22 @@ where
        // channels responsible for controlling real messages
        let (input_sender, input_receiver) = tokio::sync::mpsc::channel::<InputMessage>(1);

+        // channels responsible for event management
+        let (event_sender, event_receiver) = mpsc::unbounded();
+
        // channels responsible for controlling ack messages
        let (ack_sender, ack_receiver) = mpsc::unbounded();
        let shared_topology_accessor =
            TopologyAccessor::new(self.config.debug.topology.ignore_egress_epoch_role);

-        // Shutdown notifier for signalling tasks to stop
-        let shutdown = self
-            .shutdown
-            .map(Into::<TaskHandle>::into)
-            .unwrap_or_default()
-            .name_if_unnamed("BaseNymClient");
+        // Create a shutdown tracker for this client - either as a child of provided tracker
+        // or get one from the registry
+        let shutdown_tracker = match self.shutdown {
+            Some(parent_tracker) => parent_tracker.clone(),
+            None => nym_task::create_sdk_shutdown_tracker()?,
+        };
+
+        Self::start_event_control(self.event_tx, event_receiver, &shutdown_tracker);

        // channels responsible for dealing with reply-related fun
        let (reply_controller_sender, reply_controller_receiver) =
@@ -823,7 +1025,11 @@ where
            .dkg_query_client
            .map(|client| BandwidthController::new(credential_store, client));

-        let nym_api_client = Self::construct_nym_api_client(&self.config, self.user_agent.clone());
+        let nym_api_client = Self::construct_nym_api_client(
+            self.nym_api_urls.as_ref(),
+            &self.config,
+            self.user_agent.clone(),
+        )?;
        let key_rotation_config = Self::determine_key_rotation_state(&nym_api_client).await?;

        let topology_provider = Self::setup_topology_provider(
@@ -838,7 +1044,7 @@ where
            self.user_agent.clone(),
            generate_client_stats_id(*self_address.identity()),
            input_sender.clone(),
-            shutdown.fork("statistics_control"),
+            &shutdown_tracker.clone(),
        );

        // needs to be started as the first thing to block if required waiting for the gateway
@@ -848,14 +1054,14 @@ where
            shared_topology_accessor.clone(),
            self_address.gateway(),
            self.wait_for_gateway,
-            shutdown.fork("topology_refresher"),
+            &shutdown_tracker.clone(),
        )
        .await?;

        let gateway_packet_router = PacketRouter::new(
            ack_sender,
            mixnet_messages_sender,
-            shutdown.get_handle().named("gateway-packet-router"),
+            shutdown_tracker.clone_shutdown_token(),
        );

        let gateway_transceiver = Self::setup_gateway_transceiver(
@@ -868,7 +1074,7 @@ where
            stats_reporter.clone(),
            #[cfg(unix)]
            self.connection_fd_callback,
-            shutdown.fork("gateway_transceiver"),
+            &shutdown_tracker.clone(),
        )
        .await?;
        let gateway_ws_fd = gateway_transceiver.ws_fd();
@@ -876,7 +1082,7 @@ where
        let reply_storage = Self::setup_persistent_reply_storage(
            reply_storage_backend,
            key_rotation_config,
-            shutdown.fork("persistent_reply_storage"),
+            &shutdown_tracker.clone(),
        )
        .await?;

@@ -886,8 +1092,8 @@ where
            mixnet_messages_receiver,
            reply_storage.key_storage(),
            reply_controller_sender.clone(),
-            shutdown.fork("received_messages_buffer"),
            stats_reporter.clone(),
+            &shutdown_tracker.clone(),
        );

        // The message_sender is the transmitter for any component generating sphinx packets
@@ -897,7 +1103,8 @@ where

        let (message_sender, client_request_sender) = Self::start_mix_traffic_controller(
            gateway_transceiver,
-            shutdown.fork("mix_traffic_controller"),
+            &shutdown_tracker.clone(),
+            EventSender(event_sender),
        );

        // Channels that the websocket listener can use to signal downstream to the real traffic
@@ -926,9 +1133,8 @@ where
            reply_controller_receiver,
            shared_lane_queue_lengths.clone(),
            client_connection_rx,
-            shutdown.fork("real_traffic_controller"),
-            self.config.debug.traffic.packet_type,
            stats_reporter.clone(),
+            &shutdown_tracker.clone(),
        );

        if !self
@@ -944,12 +1150,19 @@ where
                shared_topology_accessor.clone(),
                message_sender,
                stats_reporter.clone(),
-                shutdown.fork("cover_traffic_stream"),
+                &shutdown_tracker.clone(),
            );
        }

-        debug!("Core client startup finished!");
-        debug!("The address of this client is: {self_address}");
+        tracing::debug!("Core client startup finished!");
+        tracing::debug!("The address of this client is: {self_address}");
+
+        #[cfg(debug_assertions)]
+        #[cfg(target_arch = "wasm32")]
+        {
+            console_log!("Core client startup finished!");
+            console_log!("Rust::start_base: the address of this client is: {self_address}");
+        }

        Ok(BaseClient {
            address: self_address,
@@ -958,6 +1171,7 @@ where
                client_input: ClientInput {
                    connection_command_sender: client_connection_tx,
                    input_sender,
+                    client_request_sender,
                },
            },
            client_output: ClientOutputStatus::AwaitingConsumer {
@@ -972,8 +1186,7 @@ where
                gateway_connection: GatewayConnection { gateway_ws_fd },
            },
            stats_reporter,
-            task_handle: shutdown,
-            client_request_sender,
+            shutdown_handle: shutdown_tracker, // The primary tracker for this client
            forget_me: self.config.debug.forget_me,
            remember_me: self.config.debug.remember_me,
        })
@@ -987,8 +1200,57 @@ pub struct BaseClient {
    pub client_output: ClientOutputStatus,
    pub client_state: ClientState,
    pub stats_reporter: ClientStatsSender,
-    pub client_request_sender: ClientRequestSender,
-    pub task_handle: TaskHandle,
+    pub shutdown_handle: ShutdownTracker,
    pub forget_me: ForgetMe,
    pub remember_me: RememberMe,
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use nym_network_defaults::{ApiUrl, NymNetworkDetails};
+
+    #[test]
+    fn test_network_details_with_multiple_urls() {
+        // Verify that network details can be configured with multiple API URLs
+        let mut network_details = NymNetworkDetails::new_empty();
+        network_details.nym_api_urls = Some(vec![
+            ApiUrl {
+                url: "https://validator.nymtech.net/api/".to_string(),
+                front_hosts: None,
+            },
+            ApiUrl {
+                url: "https://nym-frontdoor.vercel.app/api/".to_string(),
+                front_hosts: Some(vec!["vercel.app".to_string(), "vercel.com".to_string()]),
+            },
+        ]);
+
+        assert_eq!(network_details.nym_api_urls.as_ref().unwrap().len(), 2);
+        assert!(network_details.nym_api_urls.as_ref().unwrap()[1]
+            .front_hosts
+            .is_some());
+    }
+
+    #[test]
+    fn test_network_details_with_front_hosts() {
+        // Verify that ApiUrl can store domain fronting configuration
+        let api_url = ApiUrl {
+            url: "https://nym-frontdoor.vercel.app/api/".to_string(),
+            front_hosts: Some(vec!["vercel.app".to_string(), "vercel.com".to_string()]),
+        };
+
+        assert_eq!(api_url.url, "https://nym-frontdoor.vercel.app/api/");
+        assert_eq!(api_url.front_hosts.as_ref().unwrap().len(), 2);
+        assert!(api_url
+            .front_hosts
+            .as_ref()
+            .unwrap()
+            .contains(&"vercel.app".to_string()));
+    }
+
+    #[test]
+    fn test_default_nym_api_retries_constant() {
+        // Verify the retry constant is set correctly
+        assert_eq!(DEFAULT_NYM_API_RETRIES, 3);
+    }
+}
@@ -114,41 +114,32 @@ pub async fn setup_fs_gateways_storage<P: AsRef<Path>>(
        })
 }

-pub fn create_bandwidth_controller<St: CredentialStorage>(
-    config: &Config,
-    storage: St,
-) -> BandwidthController<QueryHttpRpcNyxdClient, St> {
-    let nyxd_url = config
-        .get_validator_endpoints()
-        .pop()
-        .expect("No nyxd validator endpoint provided");
-
-    create_bandwidth_controller_with_urls(nyxd_url, storage)
-}
-
 pub fn create_bandwidth_controller_with_urls<St: CredentialStorage>(
    nyxd_url: Url,
    storage: St,
-) -> BandwidthController<QueryHttpRpcNyxdClient, St> {
-    let client = default_query_dkg_client(nyxd_url);
+) -> Result<BandwidthController<QueryHttpRpcNyxdClient, St>, ClientCoreError> {
+    let client = default_query_dkg_client(nyxd_url)?;

-    BandwidthController::new(storage, client)
+    Ok(BandwidthController::new(storage, client))
 }

-pub fn default_query_dkg_client_from_config(config: &Config) -> QueryHttpRpcNyxdClient {
+pub fn default_query_dkg_client_from_config(
+    config: &Config,
+) -> Result<QueryHttpRpcNyxdClient, ClientCoreError> {
    let nyxd_url = config
        .get_validator_endpoints()
        .pop()
-        .expect("No nyxd validator endpoint provided");
+        .ok_or(ClientCoreError::RpcClientMissingUrl)?;

    default_query_dkg_client(nyxd_url)
 }

-pub fn default_query_dkg_client(nyxd_url: Url) -> QueryHttpRpcNyxdClient {
+pub fn default_query_dkg_client(nyxd_url: Url) -> Result<QueryHttpRpcNyxdClient, ClientCoreError> {
    let details = nym_network_defaults::NymNetworkDetails::new_from_env();
    let client_config = nyxd::Config::try_from_nym_network_details(&details)
-        .expect("failed to construct validator client config");
+        .map_err(|source| ClientCoreError::InvalidNetworkDetails { source })?;
    // overwrite env configuration with config URLs
+
    QueryHttpRpcNyxdClient::connect(client_config, nyxd_url.as_str())
-        .expect("Could not construct query client")
+        .map_err(|source| ClientCoreError::RpcClientCreationFailure { source })
 }
@@ -3,7 +3,7 @@

 use crate::client::mix_traffic::BatchMixMessageSender;
 use crate::client::topology_control::TopologyAccessor;
-use crate::{config, spawn_future};
+use crate::config;
 use futures::task::{Context, Poll};
 use futures::{Future, Stream, StreamExt};
 use nym_sphinx::acknowledgements::AckKey;
@@ -12,7 +12,6 @@ use nym_sphinx::cover::generate_loop_cover_packet;
 use nym_sphinx::params::{PacketSize, PacketType};
 use nym_sphinx::utils::sample_poisson_duration;
 use nym_statistics_common::clients::{packet_statistics::PacketStatisticsEvent, ClientStatsSender};
-use nym_task::TaskClient;
 use rand::{rngs::OsRng, CryptoRng, Rng};
 use std::pin::Pin;
 use std::sync::Arc;
@@ -69,8 +68,6 @@ where
    packet_type: PacketType,

    stats_tx: ClientStatsSender,
-
-    task_client: TaskClient,
 }

 impl<R> Stream for LoopCoverTrafficStream<R>
@@ -117,7 +114,6 @@ impl LoopCoverTrafficStream<OsRng> {
        traffic_config: config::Traffic,
        cover_config: config::CoverTraffic,
        stats_tx: ClientStatsSender,
-        task_client: TaskClient,
    ) -> Self {
        let rng = OsRng;

@@ -137,7 +133,6 @@ impl LoopCoverTrafficStream<OsRng> {
            use_legacy_sphinx_format: traffic_config.use_legacy_sphinx_format,
            packet_type: traffic_config.packet_type,
            stats_tx,
-            task_client,
        }
    }

@@ -210,7 +205,7 @@ impl LoopCoverTrafficStream<OsRng> {
                TrySendError::Full(_) => {
                    // This isn't a problem, if the channel is full means we're already sending the
                    // max amount of messages downstream can handle.
-                    tracing::debug!("Failed to send cover message - channel full");
+                    tracing::trace!("Failed to send cover message - channel full");
                }
                TrySendError::Closed(_) => {
                    tracing::warn!("Failed to send cover message - channel closed");
@@ -230,16 +225,24 @@ impl LoopCoverTrafficStream<OsRng> {
        // JS: due to identical logical structure to OutQueueControl::on_message(), this is also
        // presumably required to prevent bugs in the future. Exact reason is still unknown to me.

-        // TODO: temporary and BAD workaround for wasm (we should find a way to yield here in wasm)
        #[cfg(not(target_arch = "wasm32"))]
-        tokio::task::yield_now().await;
+        {
+            tokio::task::yield_now().await;
+        }
+
+        #[cfg(target_arch = "wasm32")]
+        {
+            tokio_with_wasm::task::yield_now().await;
+        }
    }

-    pub fn start(mut self) {
+    // it's fine if cover traffic stream task gets killed whilst processing next message
+    #[allow(clippy::panic)]
+    pub async fn run(&mut self) {
        if self.cover_traffic.disable_loop_cover_traffic_stream {
            // we should have never got here in the first place - the task should have never been created to begin with
            // so panic and review the code that lead to this branch
-            panic!("attempted to start LoopCoverTrafficStream while config explicitly disabled it.")
+            panic!("attempted to run LoopCoverTrafficStream while config explicitly disabled it.")
        }

        // we should set initial delay only when we actually start the stream
@@ -249,29 +252,11 @@ impl LoopCoverTrafficStream<OsRng> {
        );
        self.set_next_delay(sampled);

-        let mut shutdown = self.task_client.fork("select");
+        while self.next().await.is_some() {
+            self.on_new_message().await;
+        }

-        spawn_future(async move {
-            debug!("Started LoopCoverTrafficStream with graceful shutdown support");
-
-            while !shutdown.is_shutdown() {
-                tokio::select! {
-                    biased;
-                    _ = shutdown.recv() => {
-                        tracing::trace!("LoopCoverTrafficStream: Received shutdown");
-                    }
-                    next = self.next() => {
-                        if next.is_some() {
-                            self.on_new_message().await;
-                        } else {
-                            tracing::trace!("LoopCoverTrafficStream: Stopping since channel closed");
-                            break;
-                        }
-                    }
-                }
-            }
-            shutdown.recv_timeout().await;
-            tracing::debug!("LoopCoverTrafficStream: Exiting");
-        })
+        // this should never get triggered
+        error!("cover traffic stream has been exhausted!")
    }
 }
@@ -0,0 +1,40 @@
+// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use futures::StreamExt;
+
+use crate::client::base_client::{EventReceiver, EventSender, MixnetClientEvent};
+
+/// Launches and manages task events, propagating upwards what is not strictly internal.
+pub(crate) struct EventControl {
+    parent_event_tx: Option<EventSender>,
+    children_event_rx: EventReceiver,
+}
+
+impl EventControl {
+    pub(crate) fn new(
+        parent_event_tx: Option<EventSender>,
+        children_event_rx: EventReceiver,
+    ) -> Self {
+        EventControl {
+            parent_event_tx,
+            children_event_rx,
+        }
+    }
+
+    fn is_internal(event: MixnetClientEvent) -> bool {
+        match event {
+            MixnetClientEvent::Traffic(_) => false,
+        }
+    }
+
+    pub(crate) async fn run(mut self) {
+        while let Some(event) = self.children_event_rx.next().await {
+            if let Some(parent_event_tx) = &self.parent_event_tx {
+                if !Self::is_internal(event) {
+                    parent_event_tx.send(event);
+                }
+            }
+        }
+    }
+}
@@ -2,9 +2,9 @@
 // SPDX-License-Identifier: Apache-2.0

 #![allow(unused_imports)]
-
 use std::time::Duration;

+#[cfg(target_arch = "wasm32")]
 pub use wasmtimer::{std::Instant, tokio::*};
 pub type IntervalStream = gloo_timers::future::IntervalStream;

@@ -1,12 +1,13 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use crate::client::mix_traffic::transceiver::GatewayTransceiver;
-use crate::error::ClientCoreError;
-use crate::spawn_future;
+use crate::client::{
+    base_client::{EventSender, MixnetClientEvent},
+    mix_traffic::transceiver::GatewayTransceiver,
+};
 use nym_gateway_requests::ClientRequest;
 use nym_sphinx::forwarding::packet::MixPacket;
-use nym_task::TaskClient;
+use nym_task::ShutdownToken;
 use tracing::*;
 use transceiver::ErasedGatewayError;

@@ -19,33 +20,41 @@ pub mod transceiver;

 // We remind ourselves that 32 x 32kb = 1024kb, a reasonable size for a network buffer.
 pub const MIX_MESSAGE_RECEIVER_BUFFER_SIZE: usize = 32;
-const MAX_FAILURE_COUNT: usize = 100;
+
+/// Reduced from 100 to 20 to fail fast (~1-2 seconds instead of ~6 seconds).
+/// If we can't send 20 packets in a row, the gateway is unreachable.
+const MAX_FAILURE_COUNT: usize = 20;

 // that's also disgusting.
 pub struct Empty;

+#[derive(Clone, Copy, Debug)]
+pub enum MixTrafficEvent {
+    FailedSendingSphinx,
+}
+
 pub struct MixTrafficController {
    gateway_transceiver: Box<dyn GatewayTransceiver + Send>,

+    mix_tx: BatchMixMessageSender,
    mix_rx: BatchMixMessageReceiver,
    client_rx: ClientRequestReceiver,
+    client_tx: ClientRequestSender,

    // TODO: this is temporary work-around.
    // in long run `gateway_client` will be moved away from `MixTrafficController` anyway.
    consecutive_gateway_failure_count: usize,

-    task_client: TaskClient,
+    shutdown_token: ShutdownToken,
+    event_tx: EventSender,
 }

 impl MixTrafficController {
    pub fn new<T>(
        gateway_transceiver: T,
-        task_client: TaskClient,
-    ) -> (
-        MixTrafficController,
-        BatchMixMessageSender,
-        ClientRequestSender,
-    )
+        shutdown_token: ShutdownToken,
+        event_tx: EventSender,
+    ) -> MixTrafficController
    where
        T: GatewayTransceiver + Send + 'static,
    {
@@ -54,41 +63,32 @@ impl MixTrafficController {

        let (client_sender, client_receiver) = tokio::sync::mpsc::channel(8);

-        (
-            MixTrafficController {
-                gateway_transceiver: Box::new(gateway_transceiver),
-                mix_rx: message_receiver,
-                client_rx: client_receiver,
-                consecutive_gateway_failure_count: 0,
-                task_client,
-            },
-            message_sender,
-            client_sender,
-        )
+        MixTrafficController {
+            gateway_transceiver: Box::new(gateway_transceiver),
+            mix_tx: message_sender,
+            mix_rx: message_receiver,
+            client_rx: client_receiver,
+            client_tx: client_sender,
+            consecutive_gateway_failure_count: 0,
+            shutdown_token,
+            event_tx,
+        }
    }

    pub fn new_dynamic(
        gateway_transceiver: Box<dyn GatewayTransceiver + Send>,
-        task_client: TaskClient,
-    ) -> (
-        MixTrafficController,
-        BatchMixMessageSender,
-        ClientRequestSender,
-    ) {
-        let (message_sender, message_receiver) =
-            tokio::sync::mpsc::channel(MIX_MESSAGE_RECEIVER_BUFFER_SIZE);
-        let (client_sender, client_receiver) = tokio::sync::mpsc::channel(8);
-        (
-            MixTrafficController {
-                gateway_transceiver,
-                mix_rx: message_receiver,
-                client_rx: client_receiver,
-                consecutive_gateway_failure_count: 0,
-                task_client,
-            },
-            message_sender,
-            client_sender,
-        )
+        shutdown_token: ShutdownToken,
+        event_tx: EventSender,
+    ) -> MixTrafficController {
+        Self::new(gateway_transceiver, shutdown_token, event_tx)
+    }
+
+    pub fn client_tx(&self) -> ClientRequestSender {
+        self.client_tx.clone()
+    }
+
+    pub fn mix_tx(&self) -> BatchMixMessageSender {
+        self.mix_tx.clone()
    }

    async fn on_messages(
@@ -96,72 +96,84 @@ impl MixTrafficController {
        mut mix_packets: Vec<MixPacket>,
    ) -> Result<(), ErasedGatewayError> {
        debug_assert!(!mix_packets.is_empty());
-
-        let result = if mix_packets.len() == 1 {
+        let send_future = if mix_packets.len() == 1 {
+            // SAFETY: we just checked we have one packet
+            #[allow(clippy::unwrap_used)]
            let mix_packet = mix_packets.pop().unwrap();
-            self.gateway_transceiver.send_mix_packet(mix_packet).await
+            self.gateway_transceiver.send_mix_packet(mix_packet)
        } else {
-            self.gateway_transceiver
-                .batch_send_mix_packets(mix_packets)
-                .await
+            self.gateway_transceiver.batch_send_mix_packets(mix_packets)
        };

-        if result.is_err() {
-            self.consecutive_gateway_failure_count += 1;
-        } else {
-            trace!("We *might* have managed to forward sphinx packet(s) to the gateway!");
-            self.consecutive_gateway_failure_count = 0;
-        }
+        tokio::select! {
+            biased;
+            _ = self.shutdown_token.cancelled() => {
+                trace!("received shutdown while handling messages");
+                Ok(())
+            }
+            result = send_future => {
+                if result.is_err() {
+                    self.consecutive_gateway_failure_count += 1;
+                } else {
+                    trace!("We *might* have managed to forward sphinx packet(s) to the gateway!");
+                    self.consecutive_gateway_failure_count = 0;
+                }

-        result
+                result
+            }
+        }
    }

-    pub fn start(mut self) {
-        spawn_future(async move {
-            debug!("Started MixTrafficController with graceful shutdown support");
-
-            while !self.task_client.is_shutdown() {
-                tokio::select! {
-                    mix_packets = self.mix_rx.recv() => match mix_packets {
-                        Some(mix_packets) => {
-                            if let Err(err) = self.on_messages(mix_packets).await {
-                                error!("Failed to send sphinx packet(s) to the gateway: {err}");
-                                if self.consecutive_gateway_failure_count == MAX_FAILURE_COUNT {
-                                    // Disconnect from the gateway. If we should try to re-connect
-                                    // is handled at a higher layer.
-                                    error!("Failed to send sphinx packet to the gateway {MAX_FAILURE_COUNT} times in a row - assuming the gateway is dead");
-                                    // Do we need to handle the embedded mixnet client case
-                                    // separately?
-                                    self.task_client.send_we_stopped(Box::new(ClientCoreError::GatewayFailedToForwardMessages));
-                                    break;
-                                }
-                            }
-                        },
-                        None => {
-                            tracing::trace!("MixTrafficController: Stopping since channel closed");
-                            break;
-                        }
-                    },
-                    client_request = self.client_rx.recv() => match client_request {
-                        Some(client_request) => {
-                            match self.gateway_transceiver.send_client_request(client_request).await {
-                                Ok(_) => (),
-                                Err(e) => error!("Failed to send client request: {e}"),
-                            };
-                        },
-                        None => {
-                            tracing::trace!("MixTrafficController, client request channel closed");
-                        }
-                    },
-                    _ = self.task_client.recv() => {
-                        tracing::trace!("MixTrafficController: Received shutdown");
-                        break;
-                    }
+    async fn on_client_request(&mut self, client_request: ClientRequest) {
+        tokio::select! {
+            biased;
+             _ = self.shutdown_token.cancelled() => {
+                trace!("received shutdown while handling client request");
+            }
+            result = self.gateway_transceiver.send_client_request(client_request) => {
+                if let Err(err) = result {
+                    error!("Failed to send client request: {err}")
                }
            }
-            self.task_client.recv_timeout().await;
+        }
+    }

-            tracing::debug!("MixTrafficController: Exiting");
-        });
+    pub async fn run(&mut self) {
+        debug!("Started MixTrafficController with graceful shutdown support");
+        loop {
+            tokio::select! {
+                biased;
+                _ = self.shutdown_token.cancelled() => {
+                    trace!("MixTrafficController: Received shutdown");
+                    break;
+                }
+                // mix_rx should never error out as we're holding one instance of the sender
+
+                Some(mix_packets) = self.mix_rx.recv() =>  {
+                    if let Err(err) = self.on_messages(mix_packets).await {
+                        error!("Failed to send sphinx packet(s) to the gateway: {err}");
+                        if self.consecutive_gateway_failure_count == MAX_FAILURE_COUNT {
+                            // Disconnect from the gateway. If we should try to re-connect
+                            // is handled at a higher layer.
+                            error!("Failed to send sphinx packet to the gateway {MAX_FAILURE_COUNT} times in a row - assuming the gateway is dead");
+                            // Do we need to handle the embedded mixnet client case
+                            // separately?
+                            self.event_tx.send(MixnetClientEvent::Traffic(MixTrafficEvent::FailedSendingSphinx));
+                            // IMO it shouldn't be signalled from there but it is how it is
+                            // TODO : report the failure upwards and shutdown from upwards
+                            // Gateway is dead, we have to shut down currently
+                            error!("Signalling shutdown from the MixTrafficController");
+                            self.shutdown_token.cancel();
+                            break;
+                        }
+                    }
+                },
+                // client_rx should never error out as we're holding one instance of the sender
+                Some(client_request) = self.client_rx.recv() => {
+                    self.on_client_request(client_request).await;
+                }
+            }
+        }
+        debug!("MixTrafficController: Exiting");
    }
 }
@@ -269,6 +269,8 @@ pub struct MockGateway {
 }

 impl Default for MockGateway {
+    // test code
+    #[allow(clippy::unwrap_used)]
    fn default() -> Self {
        MockGateway {
            dummy_identity: "3ebjp1Fb9hdcS1AR6AZihgeJiMHkB5jjJUsvqNnfQwU7"
@@ -3,6 +3,7 @@

 pub mod base_client;
 pub mod cover_traffic_stream;
+pub(crate) mod event_control;
 pub(crate) mod helpers;
 pub mod inbound_messages;
 pub mod key_manager;
@@ -10,18 +10,17 @@ use nym_sphinx::{
    acknowledgements::{identifier::recover_identifier, AckKey},
    chunking::fragment::{FragmentIdentifier, COVER_FRAG_ID},
 };
-use nym_task::TaskClient;
+use nym_task::ShutdownToken;
 use std::sync::Arc;
 use tracing::*;

 /// Module responsible for listening for any data resembling acknowledgements from the network
 /// and firing actions to remove them from the 'Pending' state.
-pub(super) struct AcknowledgementListener {
+pub(crate) struct AcknowledgementListener {
    ack_key: Arc<AckKey>,
    ack_receiver: AcknowledgementReceiver,
    action_sender: AckActionSender,
    stats_tx: ClientStatsSender,
-    task_client: TaskClient,
 }

 impl AcknowledgementListener {
@@ -30,14 +29,12 @@ impl AcknowledgementListener {
        ack_receiver: AcknowledgementReceiver,
        action_sender: AckActionSender,
        stats_tx: ClientStatsSender,
-        task_client: TaskClient,
    ) -> Self {
        AcknowledgementListener {
            ack_key,
            ack_receiver,
            action_sender,
            stats_tx,
-            task_client,
        }
    }

@@ -68,14 +65,9 @@ impl AcknowledgementListener {
        trace!("Received {frag_id} from the mix network");
        self.stats_tx
            .report(PacketStatisticsEvent::RealAckReceived(ack_content.len()).into());
-        if let Err(err) = self
+        let _ = self
            .action_sender
-            .unbounded_send(Action::new_remove(frag_id))
-        {
-            if !self.task_client.is_shutdown_poll() {
-                error!("Failed to send remove action to action controller: {err}");
-            }
-        }
+            .unbounded_send(Action::new_remove(frag_id));
    }

    async fn handle_ack_receiver_item(&mut self, item: Vec<Vec<u8>>) {
@@ -85,11 +77,16 @@ impl AcknowledgementListener {
        }
    }

-    pub(super) async fn run(&mut self) {
+    pub(crate) async fn run(&mut self, shutdown_token: ShutdownToken) {
        debug!("Started AcknowledgementListener with graceful shutdown support");

-        while !self.task_client.is_shutdown() {
+        loop {
            tokio::select! {
+                biased;
+                _ = shutdown_token.cancelled() => {
+                    tracing::trace!("AcknowledgementListener: Received shutdown");
+                    break;
+                }
                acks = self.ack_receiver.next() => match acks {
                    Some(acks) => self.handle_ack_receiver_item(acks).await,
                    None => {
@@ -97,12 +94,9 @@ impl AcknowledgementListener {
                        break;
                    }
                },
-                _ = self.task_client.recv() => {
-                    tracing::trace!("AcknowledgementListener: Received shutdown");
-                }
+
            }
        }
-        self.task_client.recv_timeout().await;
        tracing::debug!("AcknowledgementListener: Exiting");
    }
 }
@@ -8,7 +8,7 @@ use futures::StreamExt;
 use nym_nonexhaustive_delayqueue::{Expired, NonExhaustiveDelayQueue, QueueKey};
 use nym_sphinx::chunking::fragment::FragmentIdentifier;
 use nym_sphinx::Delay as SphinxDelay;
-use nym_task::TaskClient;
+use nym_task::ShutdownToken;
 use std::collections::HashMap;
 use std::sync::Arc;
 use std::time::Duration;
@@ -82,7 +82,7 @@ impl Config {
    }
 }

-pub(super) struct ActionController {
+pub(crate) struct ActionController {
    /// Configurable parameters of the `ActionController`
    config: Config,

@@ -102,8 +102,6 @@ pub(super) struct ActionController {

    /// Channel for notifying `RetransmissionRequestListener` about expired acknowledgements.
    retransmission_sender: RetransmissionRequestSender,
-
-    task_client: TaskClient,
 }

 impl ActionController {
@@ -111,7 +109,6 @@ impl ActionController {
        config: Config,
        retransmission_sender: RetransmissionRequestSender,
        incoming_actions: AckActionReceiver,
-        task_client: TaskClient,
    ) -> Self {
        ActionController {
            config,
@@ -119,7 +116,6 @@ impl ActionController {
            pending_acks_timers: NonExhaustiveDelayQueue::new(),
            incoming_actions,
            retransmission_sender,
-            task_client,
        }
    }

@@ -194,10 +190,11 @@ impl ActionController {
        trace!("{frag_id} is updating its delay");
        // TODO: is it possible to solve this without either locking or temporarily removing the value?
        if let Some((pending_ack_data, queue_key)) = self.pending_acks_data.remove(&frag_id) {
-            // this Action is triggered by `RetransmissionRequestListener` (for 'normal' packets)
+            // SAFETY: this Action is triggered by `RetransmissionRequestListener` (for 'normal' packets)
            // or `ReplyController` (for 'reply' packets) which held the other potential
            // reference to this Arc. HOWEVER, before the Action was pushed onto the queue, the reference
            // was dropped hence this unwrap is safe.
+            #[allow(clippy::unwrap_used)]
            let mut inner_data = Arc::try_unwrap(pending_ack_data).unwrap();
            inner_data.update_retransmitted(delay);

@@ -209,6 +206,7 @@ impl ActionController {
    }

    // note: when the entry expires it's automatically removed from pending_acks_timers
+    #[allow(clippy::panic)]
    fn handle_expired_ack_timer(&mut self, expired_ack: Expired<FragmentIdentifier>) {
        let frag_id = expired_ack.into_inner();

@@ -224,14 +222,9 @@ impl ActionController {
            // downgrading an arc and then upgrading vs cloning is difference of 30ns vs 15ns
            // so it's literally a NO difference while it might prevent us from unnecessarily
            // resending data (in maybe 1 in 1 million cases, but it's something)
-            if let Err(err) = self
+            let _ = self
                .retransmission_sender
-                .unbounded_send(Arc::downgrade(pending_ack_data))
-            {
-                if !self.task_client.is_shutdown_poll() {
-                    tracing::error!("Failed to send pending ack for retransmission: {err}");
-                }
-            }
+                .unbounded_send(Arc::downgrade(pending_ack_data));
        } else {
            // this shouldn't cause any issues but shouldn't have happened to begin with!
            error!("An already removed pending ack has expired")
@@ -249,11 +242,16 @@ impl ActionController {
        }
    }

-    pub(super) async fn run(&mut self) {
+    pub(crate) async fn run(&mut self, shutdown_token: ShutdownToken) {
        debug!("Started ActionController with graceful shutdown support");

-        while !self.task_client.is_shutdown() {
+        loop {
            tokio::select! {
+                biased;
+                _ = shutdown_token.cancelled() => {
+                    tracing::trace!("ActionController: Received shutdown");
+                    break;
+                }
                action = self.incoming_actions.next() => match action {
                    Some(action) => self.process_action(action),
                    None => {
@@ -270,13 +268,8 @@ impl ActionController {
                        break;
                    }
                },
-                _ = self.task_client.recv() => {
-                    tracing::trace!("ActionController: Received shutdown");
-                    break;
-                }
            }
        }
-        self.task_client.recv_timeout().await;
        tracing::debug!("ActionController: Exiting");
    }
 }
@@ -10,21 +10,20 @@ use nym_sphinx::anonymous_replies::requests::AnonymousSenderTag;
 use nym_sphinx::forwarding::packet::MixPacket;
 use nym_sphinx::params::PacketType;
 use nym_task::connections::TransmissionLane;
-use nym_task::TaskClient;
+use nym_task::ShutdownToken;
 use rand::{CryptoRng, Rng};
 use tracing::*;

 /// Module responsible for dealing with the received messages: splitting them, creating acknowledgements,
 /// putting everything into sphinx packets, etc.
 /// It also makes an initial sending attempt for said messages.
-pub(super) struct InputMessageListener<R>
+pub(crate) struct InputMessageListener<R>
 where
    R: CryptoRng + Rng,
 {
    input_receiver: InputMessageReceiver,
    message_handler: MessageHandler<R>,
    reply_controller_sender: ReplyControllerSender,
-    task_client: TaskClient,
 }

 impl<R> InputMessageListener<R>
@@ -38,13 +37,11 @@ where
        input_receiver: InputMessageReceiver,
        message_handler: MessageHandler<R>,
        reply_controller_sender: ReplyControllerSender,
-        task_client: TaskClient,
    ) -> Self {
        InputMessageListener {
            input_receiver,
            message_handler,
            reply_controller_sender,
-            task_client,
        }
    }

@@ -68,14 +65,9 @@ where
        max_retransmissions: Option<u32>,
    ) {
        // offload reply handling to the dedicated task
-        if let Err(err) =
+        let _ =
            self.reply_controller_sender
-                .send_reply(recipient_tag, data, lane, max_retransmissions)
-        {
-            if !self.task_client.is_shutdown_poll() {
-                error!("failed to send a reply - {err}");
-            }
-        }
+                .send_reply(recipient_tag, data, lane, max_retransmissions);
    }

    async fn handle_plain_message(
@@ -120,6 +112,7 @@ where
        }
    }

+    #[allow(clippy::panic)]
    async fn on_input_message(&mut self, msg: InputMessage) {
        match msg {
            InputMessage::Regular {
@@ -213,16 +206,23 @@ where
                    self.handle_premade_packets(msgs, lane).await
                }
                // MessageWrappers can't be nested
-                InputMessage::MessageWrapper { .. } => unimplemented!(),
+                InputMessage::MessageWrapper { .. } => {
+                    panic!("attempted to use nested MessageWrapper")
+                }
            },
        };
    }

-    pub(super) async fn run(&mut self) {
+    pub(crate) async fn run(&mut self, shutdown_token: ShutdownToken) {
        debug!("Started InputMessageListener with graceful shutdown support");

-        while !self.task_client.is_shutdown() {
+        loop {
            tokio::select! {
+                biased;
+                _ = shutdown_token.cancelled() => {
+                    tracing::trace!("InputMessageListener: Received shutdown");
+                    break;
+                }
                input_msg = self.input_receiver.recv() => match input_msg {
                    Some(input_msg) => {
                        self.on_input_message(input_msg).await;
@@ -232,12 +232,9 @@ where
                        break;
                    }
                },
-                _ = self.task_client.recv() => {
-                    tracing::trace!("InputMessageListener: Received shutdown");
-                }
+
            }
        }
-        self.task_client.recv_timeout().await;
        tracing::debug!("InputMessageListener: Exiting");
    }
 }
@@ -10,7 +10,6 @@ use self::{
 use crate::client::inbound_messages::InputMessageReceiver;
 use crate::client::real_messages_control::message_handler::MessageHandler;
 use crate::client::replies::reply_controller::ReplyControllerSender;
-use crate::spawn_future;
 use action_controller::AckActionReceiver;
 use futures::channel::mpsc;
 use nym_gateway_client::AcknowledgementReceiver;
@@ -23,13 +22,11 @@ use nym_sphinx::{
    Delay as SphinxDelay,
 };
 use nym_statistics_common::clients::ClientStatsSender;
-use nym_task::TaskClient;
 use rand::{CryptoRng, Rng};
 use std::{
    sync::{Arc, Weak},
    time::Duration,
 };
-use tracing::*;

 pub(crate) use action_controller::{AckActionSender, Action};

@@ -190,6 +187,9 @@ pub(super) struct Config {

    /// Predefined packet size used for the encapsulated messages.
    packet_size: PacketSize,
+
+    /// Type of packets used for retransmissions
+    packet_type: PacketType,
 }

 impl Config {
@@ -197,12 +197,14 @@ impl Config {
        maximum_retransmissions: Option<u32>,
        ack_wait_addition: Duration,
        ack_wait_multiplier: f64,
+        packet_type: PacketType,
    ) -> Self {
        Config {
            maximum_retransmissions,
            ack_wait_addition,
            ack_wait_multiplier,
            packet_size: Default::default(),
+            packet_type,
        }
    }

@@ -212,7 +214,7 @@ impl Config {
    }
 }

-pub(super) struct AcknowledgementController<R>
+pub(crate) struct AcknowledgementController<R>
 where
    R: CryptoRng + Rng,
 {
@@ -234,7 +236,6 @@ where
        message_handler: MessageHandler<R>,
        reply_controller_sender: ReplyControllerSender,
        stats_tx: ClientStatsSender,
-        task_client: TaskClient,
    ) -> Self {
        let (retransmission_tx, retransmission_rx) = mpsc::unbounded();

@@ -244,7 +245,6 @@ where
            action_config,
            retransmission_tx,
            connectors.ack_action_receiver,
-            task_client.fork("action_controller"),
        );

        // will listen for any acks coming from the network
@@ -253,7 +253,6 @@ where
            connectors.ack_receiver,
            connectors.ack_action_sender.clone(),
            stats_tx,
-            task_client.fork("acknowledgement_listener"),
        );

        // will listen for any new messages from the client
@@ -261,7 +260,6 @@ where
            connectors.input_receiver,
            message_handler.clone(),
            reply_controller_sender.clone(),
-            task_client.fork("input_message_listener"),
        );

        // will listen for any ack timeouts and trigger retransmission
@@ -271,16 +269,13 @@ where
            message_handler,
            retransmission_rx,
            reply_controller_sender,
-            task_client.fork("retransmission_request_listener"),
+            config.packet_type,
        );

        // will listen for events indicating the packet was sent through the network so that
        // the retransmission timer should be started.
-        let sent_notification_listener = SentNotificationListener::new(
-            connectors.sent_notifier,
-            connectors.ack_action_sender,
-            task_client.with_suffix("sent_notification_listener"),
-        );
+        let sent_notification_listener =
+            SentNotificationListener::new(connectors.sent_notifier, connectors.ack_action_sender);

        AcknowledgementController {
            acknowledgement_listener,
@@ -291,36 +286,21 @@ where
        }
    }

-    pub(super) fn start(self, 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;
-        let mut sent_notification_listener = self.sent_notification_listener;
-        let mut action_controller = self.action_controller;
-
-        spawn_future(async move {
-            acknowledgement_listener.run().await;
-            debug!("The acknowledgement listener has finished execution!");
-        });
-
-        spawn_future(async move {
-            input_message_listener.run().await;
-            debug!("The input listener has finished execution!");
-        });
-
-        spawn_future(async move {
-            retransmission_request_listener.run(packet_type).await;
-            debug!("The retransmission request listener has finished execution!");
-        });
-
-        spawn_future(async move {
-            sent_notification_listener.run().await;
-            debug!("The sent notification listener has finished execution!");
-        });
-
-        spawn_future(async move {
-            action_controller.run().await;
-            debug!("The controller has finished execution!");
-        });
+    pub(crate) fn into_tasks(
+        self,
+    ) -> (
+        AcknowledgementListener,
+        InputMessageListener<R>,
+        RetransmissionRequestListener<R>,
+        SentNotificationListener,
+        ActionController,
+    ) {
+        (
+            self.acknowledgement_listener,
+            self.input_message_listener,
+            self.retransmission_request_listener,
+            self.sent_notification_listener,
+            self.action_controller,
+        )
    }
 }
@@ -13,19 +13,19 @@ use futures::StreamExt;
 use nym_sphinx::chunking::fragment::Fragment;
 use nym_sphinx::preparer::PreparedFragment;
 use nym_sphinx::{addressing::clients::Recipient, params::PacketType};
-use nym_task::{connections::TransmissionLane, TaskClient};
+use nym_task::{connections::TransmissionLane, ShutdownToken};
 use rand::{CryptoRng, Rng};
 use std::sync::{Arc, Weak};
 use tracing::*;

 // responsible for packet retransmission upon fired timer
-pub(super) struct RetransmissionRequestListener<R> {
+pub(crate) struct RetransmissionRequestListener<R> {
    maximum_retransmissions: Option<u32>,
    action_sender: AckActionSender,
    message_handler: MessageHandler<R>,
    request_receiver: RetransmissionRequestReceiver,
    reply_controller_sender: ReplyControllerSender,
-    task_client: TaskClient,
+    packet_type: PacketType,
 }

 impl<R> RetransmissionRequestListener<R>
@@ -38,7 +38,7 @@ where
        message_handler: MessageHandler<R>,
        request_receiver: RetransmissionRequestReceiver,
        reply_controller_sender: ReplyControllerSender,
-        task_client: TaskClient,
+        packet_type: PacketType,
    ) -> Self {
        RetransmissionRequestListener {
            maximum_retransmissions,
@@ -46,7 +46,7 @@ where
            message_handler,
            request_receiver,
            reply_controller_sender,
-            task_client,
+            packet_type,
        }
    }

@@ -67,7 +67,6 @@ where
    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,
@@ -97,22 +96,18 @@ where
            } => {
                // if this is retransmission for reply, offload it to the dedicated task
                // that deals with all the surbs
-                if let Err(err) = self.reply_controller_sender.send_retransmission_data(
+                let _ = self.reply_controller_sender.send_retransmission_data(
                    *recipient_tag,
                    weak_timed_out_ack,
                    *extra_surb_request,
-                ) {
-                    if !self.task_client.is_shutdown_poll() {
-                        error!("Failed to send retransmission data to the reply controller: {err}");
-                    }
-                }
+                );
                return;
            }
            PacketDestination::KnownRecipient(recipient) => {
                self.prepare_normal_retransmission_chunk(
                    **recipient,
                    timed_out_ack.message_chunk.clone(),
-                    packet_type,
+                    self.packet_type,
                )
                .await
            }
@@ -153,14 +148,9 @@ where
        // is sent to the `OutQueueControl` and has gone through its internal queue
        // with the additional poisson delay.
        // And since Actions are executed in order `UpdateTimer` will HAVE TO be executed before `StartTimer`
-        if let Err(err) = self
+        let _ = self
            .action_sender
-            .unbounded_send(Action::new_update_pending_ack(frag_id, new_delay))
-        {
-            if !self.task_client.is_shutdown_poll() {
-                error!("Failed to send update pending ack action to the controller: {err}");
-            }
-        }
+            .unbounded_send(Action::new_update_pending_ack(frag_id, new_delay));

        // send to `OutQueueControl` to eventually send to the mix network
        self.message_handler
@@ -174,24 +164,26 @@ where
            .await
    }

-    pub(super) async fn run(&mut self, packet_type: PacketType) {
+    pub(crate) async fn run(&mut self, shutdown_token: ShutdownToken) {
        debug!("Started RetransmissionRequestListener with graceful shutdown support");

-        while !self.task_client.is_shutdown() {
+        loop {
            tokio::select! {
+                biased;
+                _ = shutdown_token.cancelled() => {
+                    tracing::trace!("RetransmissionRequestListener: Received shutdown");
+                    break;
+                }
                timed_out_ack = self.request_receiver.next() => match timed_out_ack {
-                    Some(timed_out_ack) => self.on_retransmission_request(timed_out_ack, packet_type).await,
+                    Some(timed_out_ack) => self.on_retransmission_request(timed_out_ack).await,
                    None => {
                        tracing::trace!("RetransmissionRequestListener: Stopping since channel closed");
                        break;
                    }
                },
-                _ = self.task_client.recv() => {
-                    tracing::trace!("RetransmissionRequestListener: Received shutdown");
-                }
+
            }
        }
-        self.task_client.recv_timeout().await;
        tracing::debug!("RetransmissionRequestListener: Exiting");
    }
 }
@@ -5,29 +5,25 @@ use super::action_controller::{AckActionSender, Action};
 use super::SentPacketNotificationReceiver;
 use futures::StreamExt;
 use nym_sphinx::chunking::fragment::{FragmentIdentifier, COVER_FRAG_ID};
-use nym_task::TaskClient;
 use tracing::*;

 /// Module responsible for starting up retransmission timers.
 /// It is required because when we send our packet to the `real traffic stream` controlled
 /// by a poisson timer, there's no guarantee the message will be sent immediately, so we might
 /// accidentally fire retransmission way quicker than we should have.
-pub(super) struct SentNotificationListener {
+pub(crate) struct SentNotificationListener {
    sent_notifier: SentPacketNotificationReceiver,
    action_sender: AckActionSender,
-    task_client: TaskClient,
 }

 impl SentNotificationListener {
    pub(super) fn new(
        sent_notifier: SentPacketNotificationReceiver,
        action_sender: AckActionSender,
-        task_client: TaskClient,
    ) -> Self {
        SentNotificationListener {
            sent_notifier,
            action_sender,
-            task_client,
        }
    }

@@ -36,37 +32,18 @@ impl SentNotificationListener {
            trace!("sent off a cover message - no need to start retransmission timer!");
            return;
        }
-        if let Err(err) = self
+        let _ = self
            .action_sender
-            .unbounded_send(Action::new_start_timer(frag_id))
-        {
-            if !self.task_client.is_shutdown_poll() {
-                error!("Failed to send start timer action to action controller: {err}");
-            }
-        }
+            .unbounded_send(Action::new_start_timer(frag_id));
    }

-    pub(super) async fn run(&mut self) {
+    pub(crate) async fn run(&mut self) {
        debug!("Started SentNotificationListener with graceful shutdown support");

-        while !self.task_client.is_shutdown() {
-            tokio::select! {
-                frag_id = self.sent_notifier.next() => match frag_id {
-                    Some(frag_id) => {
-                        self.on_sent_message(frag_id).await;
-                    }
-                    None => {
-                        tracing::trace!("SentNotificationListener: Stopping since channel closed");
-                        break;
-                    }
-                },
-                _ = self.task_client.recv() => {
-                    tracing::trace!("SentNotificationListener: Received shutdown");
-                    break;
-                }
-            }
+        while let Some(frag_id) = self.sent_notifier.next().await {
+            self.on_sent_message(frag_id).await;
        }
-        assert!(self.task_client.is_shutdown_poll());
+
        tracing::debug!("SentNotificationListener: Exiting");
    }
 }
--- a/Show More
+++ b/Show More