Issues

• MockAgent: fetch fails with "Request was cancelled" when following a redirect

  bug
  nodejs/undici#5963 · Filter by author santiago-su opened on Oct 5, 2026

• build: build milo through the same WASM build infrastructure as llhttp

  nodejs/undici#5938 · Filter by author mcollina opened on Oct 1, 2026
  

• HTTP/2 idle reaper crashes the process: InformationalError: socket idle timeout is emitted on a ClientHttp2Stream with no 'error' listener

  bug
  nodejs/undici#5936 · Filter by author ethanresnick opened on Sep 30, 2026

• Fix test:typescript script for Windows compatibility

  bug
  nodejs/undici#5928 · Filter by author shivarm opened on Sep 30, 2026

• undici-types 6.21.x: a trusted-publisher re-release would unblock current @types/node@20/22 under pnpm trustPolicy

  nodejs/undici#5919 · Filter by author igorsantosgrueiro opened on Sep 27, 2026

• Should Fetch retry reusable request bodies after HTTP/2 GOAWAY?

  nodejs/undici#5912 · Filter by author fallintoplace opened on Sep 26, 2026
  1

• fetch: after a server sends Connection: close, each new connection serves one request (regression in 7.15.0, fixed in 8.11.0, still in 7.30.0 / Node 24)

  nodejs/undici#5910 · Filter by author NITBRASIL opened on Sep 25, 2026

• HTTP/1.1 304 with Content-Length closes the connection

  bug
  nodejs/undici#5900 · Filter by author koal44 opened on Sep 25, 2026
  2

• Fetch should ignore unsolicited 100 Continue responses

  nodejs/undici#5899 · Filter by author koal44 opened on Sep 25, 2026

• Repeated response headers are handled inconsistently across HTTP/1.1 and HTTP/2

  nodejs/undici#5898 · Filter by author koal44 opened on Sep 24, 2026

• cache.match not working after cache.add

  bug
  nodejs/undici#5859 · Filter by author kjsik11 opened on Sep 22, 2026
  1

• Support maxRequestsPerClient for HTTP/2 sessions

  enhancement
  nodejs/undici#5787 · Filter by author johnlyonms opened on Sep 8, 2026
  1

• deduplicate: aborting the primary request rejects the other callers in the group

  nodejs/undici#5711 · Filter by author pacocartones opened on Aug 24, 2026

• Socks5ProxyAgent: SOCKS5 handshake/auth timeout leaks the underlying socket

  bug
  nodejs/undici#5704 · Filter by author andrewmbenton opened on Aug 19, 2026

• Nightly tests are failing

  nodejs/undici#5671 · Filter by author github-actions opened on Aug 8, 2026
  1

• request() with a cross-realm FormData (e.g. Node's global) hangs forever instead of erroring; via the legacy globalDispatcher claim this also breaks undici v6 clients in the same process

  nodejs/undici#5520 · Filter by author Pyker opened on Jul 6, 2026
  2

• cache: 304 revalidation response never updates the stored entry on the synchronous path (RFC 9111 §4.3.4) — entry stays stale forever

  nodejs/undici#5505 · Filter by author jeswr opened on Jul 4, 2026

• cache interceptor ignores request "Cache-Control: max-age=0" (falsy check) — breaks fetch(url, {cache:'no-cache'}) through composed cache dispatchers

  nodejs/undici#5504 · Filter by author jeswr opened on Jul 4, 2026
  2

• Importing undici v8 silently breaks Node's bundled fetch via the legacy globalDispatcher bridge (v8's stricter core Request rejects opts the bundled v6 core accepts — e.g. request-set Content-Length)

  nodejs/undici#5500 · Filter by author jeswr opened on Jul 4, 2026
  7

• Support for HTTP/3 (QUIC)

  nodejs/undici#5471 · Filter by author jeswr opened on Jun 30, 2026
  1

• DispatchOptions.upgrade accepts boolean in types but runtime rejects it

  nodejs/undici#5466 · Filter by author MicroMilo opened on Jun 30, 2026

• [flaky] test\websocket\receive.js

  nodejs/undici#5264 · Filter by author trivikr opened on May 7, 2026

• [flaky] test\mock-pool.js

  nodejs/undici#5263 · Filter by author trivikr opened on May 7, 2026

• [flaky] test\pipeline-pipelining.js

  nodejs/undici#5259 · Filter by author trivikr opened on May 7, 2026

• [flaky] test\socket-timeout.js

  nodejs/undici#5256 · Filter by author trivikr opened on May 7, 2026