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Original hostname is lost for HTTP connections when using the DNS interceptor

bugSomething isn't workingSomething isn't working

Status: Open.

#5573 In nodejs/undici;

· kholstinin opened on Jul 20, 2026

WebSocket.close() orderly TLS shutdown can pin process exit for many seconds; need terminate()/unref

Status: Open.

#5570 In nodejs/undici;

· steve02081504 opened on Jul 20, 2026

d.ts: Export PendingInterceptor type from mock-agent.d.ts

enhancementNew feature or requestNew feature or request

Status: Open.

#5563 In nodejs/undici;

· KristjanTammekivi opened on Jul 15, 2026

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

Status: Open.

#5520 In nodejs/undici;

· Pyker opened on Jul 6, 2026

cache: revalidation sends If-Modified-Since derived from local insertion time instead of the stored Last-Modified (RFC 9110 §13.1.3)

Status: Open.

#5506 In nodejs/undici;

· jeswr opened on Jul 4, 2026

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

Status: Open.

#5505 In nodejs/undici;

· 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

Status: Open.

#5504 In nodejs/undici;

· jeswr opened on Jul 4, 2026

WebSocketStream: receive backpressure is not implemented — a slow consumer buffers every received message in memory

Status: Open.

#5503 In nodejs/undici;

· carlotestor opened on Jul 4, 2026

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)

Status: Open.

#5500 In nodejs/undici;

· jeswr opened on Jul 4, 2026

Support for HTTP/3 (QUIC)

Status: Open.

#5471 In nodejs/undici;

· jeswr opened on Jun 30, 2026

Nightly tests are failing

Status: Open.

#5469 In nodejs/undici;

· github-actions opened on Jun 30, 2026

DispatchOptions.upgrade accepts boolean in types but runtime rejects it

Status: Open.

#5466 In nodejs/undici;

· MicroMilo opened on Jun 30, 2026