Issues

• Mocked socket emits 'close' before 'error' when destroyed from a timer, so undici throws assert(!this.aborted)

  mswjs/interceptors#893 · Filter by author jerryluk opened on Nov 4, 2026

• Emulated TLS handshake emits undeserializable sessions; undici reuses them in tls.connect() (crashes Node ≤ 24 with WebCrypto)

  mswjs/interceptors#892 · Filter by author webteamfrit opened on Nov 2, 2026

• Node.js: a mocked streamed response isn't delivered until its first chunk (since 0.42.0)

  mswjs/interceptors#888 · Filter by author batusai513 opened on Oct 28, 2026
  1

• XMLHttpRequest: upload.dispatchEvent() and removeEventListener() do nothing, and removed listeners still fire for mocked responses

  mswjs/interceptors#887 · Filter by author aklkv opened on Oct 26, 2026

• Node.js interceptors use the global setImmediate, which jsdom environments don't have

  mswjs/interceptors#882 · Filter by author sebdanielsson opened on Oct 25, 2026

• An idle connection passed through by the read-before-write check fails the next mocked request on it

  mswjs/interceptors#881 · Filter by author schalkneethling opened on Oct 24, 2026
  1

• SocketInterceptor: a connection still pending at dispose() is passed through to the real network

  mswjs/interceptors#880 · Filter by author luizfneves404 opened on Oct 22, 2026
  2

• Mocked responses leave the client socket's TCP handle open and its timeout armed, so every mocked socket stays reachable

  mswjs/interceptors#877 · Filter by author marcinsvr opened on Oct 18, 2026
  3

• POST with a body fails with ECONNRESET after an earlier request when the mocked body stream closes asynchronously

  mswjs/interceptors#868 · Filter by author mrityunjay-pandey opened on Oct 14, 2026
  1

• Kept-alive socket still carries a stale verdict after #813: the interceptor never sees the next fetch, which goes to the real network

  mswjs/interceptors#862 · Filter by author rharrison33 opened on Oct 7, 2026
  5

• TlsSocketController.claim() leaks a "secureConnect" listener per request on a kept-alive socket

  mswjs/interceptors#859 · Filter by author matthewkeough opened on Oct 6, 2026
  1

• ClientRequestInterceptor (0.45.x) hangs @grpc/grpc-js HTTP/2 connections, which breaks msw 3 setupServer even in bypass mode

  mswjs/interceptors#853 · Filter by author anotheri opened on Sep 30, 2026
  1

• ProgressEvent support is cached at module load but read at call time, throwing after a jsdom teardown

  mswjs/interceptors#818 · Filter by author nader-eloshaiker opened on Aug 16, 2026
  1

• Migrate WebSocketInterceptor to the socket level

  mswjs/interceptors#806 · Filter by author kettanaito opened on Jul 22, 2026
  1

• request.signal is not aborted for aborted http.ClientRequest

  mswjs/interceptors#768 · Filter by author piranmontford-ww opened on Feb 16, 2026
  3

• Intermittent EPIPE errors with high-concurrency Unix socket requests

  mswjs/interceptors#760 · Filter by author georgewaters opened on Dec 30, 2025
  1

• Add client.errorWith(reason) to WebSocket interceptor

  mswjs/interceptors#747 · Filter by author kettanaito opened on Oct 11, 2025
  1

• Support async listeners so that a slow/stuck in WebSocket.CONNECTING can be simulated

  mswjs/interceptors#711 · Filter by author sfc-gh-jtjhin opened on Mar 11, 2025
  1

• TypeError: socket.getPeerX509Certificate is not a function

  mswjs/interceptors#700 · Filter by author kettanaito opened on Jan 24, 2025

• Fetch interceptor does not abort signal for long response

  mswjs/interceptors#693 · Filter by author mikicho opened on Dec 21, 2024
  1

• Support a request "error" event listener

  enhancementscope:http
  mswjs/interceptors#667 · Filter by author marcelkottmann opened on Oct 31, 2024
  4

• controller.errorWith ends up in the response path if the error is not Error instance

  mswjs/interceptors#625 · Filter by author mikicho opened on Aug 31, 2024
  9

• XHR: set lengthComputable event property to false if computing length failed

  good first issue
  mswjs/interceptors#617 · Filter by author kettanaito opened on Aug 13, 2024
  2

• Support Response.error() in RemoteInterceptor

  mswjs/interceptors#601 · Filter by author kettanaito opened on Jul 11, 2024

• Protocol "https:" not supported. Expected "http:" when using "proxy-agent"

  mswjs/interceptors#570 · Filter by author indrek-sixfold opened on Apr 29, 2024
  3