Files
nym/nym-api
Jędrzej Stuczyński 46c67440bb Mixnode stress testing (#6575)
* Squashing the mix stress testing branch (#6575)

reduced chain watcher per block log severity

update network monitors contract semver to 1.0.0

fix build issues

fix mixnet client dropping initial packet on egress reconnection

adjusted logs for network monitor agent

changed default testing interval to 2h

refresh NM contract information

explicit return type for batch submission

for mixnet listener task to get scheduled before beginning connectivity test

make sure to always use canonical ip for network monitor noise keys

feat: NMv3: make agents decide egress port (#6746)

add config v12->v13 config migration for nym nodes

fix formatting in wallet types

simplified client config creation

remove other swagger redirect

removed swagger redirect on /swagger/ route

log version info on startup

add workflows, contract address, and dockerfile

bugfix: use correct endpoints when setting up orchestrator (#6733)

clippy

adjust DEFAULT_MIN_STRESS_TESTED_NODES ratio

expose route with new performance metrics

fixes and additional docs

use stress testing scores

stub for usage of stress testing scores

stub traits

added new fields to nym-api config controlling usage of stress test data

guard against duplicate packets

prevent usage of chain_authorisation_check_max_attempts with value of 0

make sure duplicate results cant be inserted into the db

submit test results from orchestrator on an interval

docs and fixes

nym-api side of handling result submission

stubs for submitting results

NM orchestrator verifying nym-api result submission permissions

NM orchestrator to update announced key on startup

allow NM orchestrator to announce its identity key to the contract

stubs within nym-api for accepting NMv3 results

added additional metrics

docs

bugfixes + making sure to only assign mixnode testruns

fixed node refresher to only retrieve mixnodes and add additional metrics

topology metrics

defined basic prometheus metrics

authorised endpoint for returning prometheus data

create initial stub for prometheus metrics

post rebasing fixes

adjusted routes

missing implementation for storage getters

a lot of new stubs and db accessors

stubs for results endpoints

update utoipa tags for agent rountes

shared auth between metrics and results

moved stale results eviction into the interval.tick branch

refactor and comments

create background process to evict stale data

include sphinx packet delay as part of the stats

fix mock construction

add median to the calculated latency distribution

remove unused imports

cleanup

performing testrun and submitting the results

assigning testruns to requesting agents

basic stub for http server for the NMv3 orchestrator

chore: rename existing 'NetworkMonitorAgent' to 'NodeStressTester'

make sure to use canonical ips within the noise config

fixed contract tests

cargo fmt

additional comments and unit tests

contract and nym-node support of NM agents being run on the same host

basic unit tests

refactoring

make agents retrieve mix port assignment from the orchestrator

provide sensible defaults to CLI arguments

stub the initial structure for the agent

chore: remove redundant import

missed tick behaviour

removed redundant mutex

removed redundant try_get_client

reuse existing constant for default nymnode port

add node refresher for periodic scraping of bonded nym-node details

- NodeRefresher periodically queries the mixnet contract for all bonded
  nodes and probes each node's HTTP API for host information, sphinx keys,
  noise keys, and key rotation IDs
- Extract NymNodeApiClientRetriever into nym-node-requests with port
  probing, identity verification, and host information signature checking
- Add clone_query_client on NyxdClient so the refresher can hold its own
  query client without locking the signing client
- Batch upsert for nym_node rows (single transaction instead of per-row)
- Reuse the new helpers in nym-api's node_describe_cache

ensure assignment of testrun begins an IMMEDIATE tx

construction of the orchestrator struct

initial set of cli args

make sure to not assign testable nodes too often

very initial database structure and cli

fixed construction of RoutableNetworkMonitors

remove redundant constructor for NoiseNode

forbid 0-nonsense config values

add type safety for test route construction

moved lioness and arrayref to workspace deps

fixed dockerfile build

always use canonical addresses in RoutableNetworkMonitors

fixed old contract formatting issues

removed redundant into() call

network monitor agent fixes

additional logs

config unit tests

more docs

standalone stress testing invocation

further refactoring and changes

refactor testing loop and return valid test result upon completion

initial sending/receiving test loop

generating reusable sphinx headers

additional structure for receiving ingress packets

initial scaffolding for NMv3 agent

added validation of x25519 noise key

removed unstable call to 'is_multiple_of'

remove calls to from_octets as they're unavailable in pre 1.91

additional docs/comments

propagating noise information about NM for mixnet routing

pass full socket address of the agent into the contract storage

feat: store noise keys alongside ip addresses within the contract

removed redundant comment

ensure NM packets can only go to NM

PR review comments

added additional docs

allow NM to replay packets + fix replay prometheus metrics

propagate information about nm agent to connection handler

updated nym-node config migration

feat: introduced nym-node websocket subscription for keeping updated list of NM agents

allow admin to also revoke monitor agents

remove agents upon orchestrator removal

fixed schema generation and regenerated the contract schema

removed rustc restriction on contracts-common

added client methods for interacting with the contract

added unit tests for contract methods

implemented logic of the network monitors contract

create initial structure for network monitors contract

start mix stress testing topic branch

* make nym-node default to the new blockstream rpc/ws node cluster

* reduced mixnet-client log severity

* set network monitors contract address for mainnet
2026-05-22 09:43:20 +01:00
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2026-05-22 09:43:20 +01:00
2024-12-20 12:18:45 +01:00
2026-05-22 09:43:20 +01:00
2026-05-21 17:24:08 +02:00
2024-10-01 16:39:47 +02:00
2025-06-03 11:22:51 +01:00

Nym API

The Nym API provides multiple services to the Nym network, and is designed to be run alongside Nyxd validators. From a logical perspective, there are multiple applications, but they are bundled together for ease of deployment.

License

Copyright (C) 2023 Nym Technologies SA contact@nymtech.net

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.

Nym Directory Caching

The Nym directory is contained in the mixnet smart contract in the Nyx blockchain. The blockchain holds the canonical directory information about nodes, stake, locations etc. The Nym API caches this information periodically to make queries faster and more scalable.

Nym Network Monitoring

The Nym API periodically sends test packets through the entire Nym mixnet to test node liveness and quality of service.

Nym Epoch Advancement and Payment

The Nym API periodically advances the epoch and triggers payment based on network monitoring measurements.

Coconut Credentials

Coconut [paper] is a distributed cryptographic signing scheme providing a high degree of privacy for its users. You can find an overview of how to use it in the Coconut section of the Nym documentation.

A simple explanation is also available in blog form.

This project was partially funded through the NGI0 PET Fund, a fund established by NL.net with financial support from the European Commission's NGI programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 825310.