Issues

• HelloFirefox_Auto (148) no longer matches current Firefox

  refraction-networking/utls#428 · Filter by author SaamoCha opened on Oct 19, 2026

• Release request: include the UQUICConn session API required by uQUIC

  refraction-networking/utls#426 · Filter by author andre487 opened on Oct 15, 2026

• UQUICConn.Close() deadlocks: missing the <-signalc receive that QUICConn.Close() has

  refraction-networking/utls#421 · Filter by author Capricornus007 opened on Sep 29, 2026

• ECH inner padding discards the name-padding term (diverges from crypto/tls since CL 765446)

  refraction-networking/utls#410 · Filter by author HeartyYF opened on Aug 6, 2026

• HelloFirefox_Auto unexpected tls: invalid server key share

  refraction-networking/utls#402 · Filter by author hyperion-cs opened on Jun 30, 2026
  3

• Chrome is missing the trust_anchors ClientHello extension

  refraction-networking/utls#397 · Filter by author konohog114 opened on Jun 5, 2026
  5

• New browser versions?

  refraction-networking/utls#373 · Filter by author zmmac1 opened on Sep 29, 2025
  10

• Expose SNI from ClientHello in ClientHelloSpec

  refraction-networking/utls#369 · Filter by author samczsun opened on Sep 16, 2025

• panic: tls: setPskToUConn failed: only binders are allowed to change on state 'PskAllSet' — low reproducibility, but panic crashes program

  refraction-networking/utls#368 · Filter by author gospider001 opened on Sep 9, 2025

• Can UTls be used in conjunction with Http.Client?

  refraction-networking/utls#367 · Filter by author shixiawuheng opened on Aug 26, 2025
  1

• randomized fingerprint problem: CurvePreferences includes unsupported curve

  refraction-networking/utls#366 · Filter by author patterniha opened on Aug 18, 2025
  1

• Please update the library to be compatible with the latest versions of Firefox, Safari, Android, and iOS.

  refraction-networking/utls#360 · Filter by author xujie86 opened on Jul 25, 2025
  4

• wasm

  refraction-networking/utls#339 · Filter by author fanchen0 opened on May 1, 2025
  1

• i doubt if utls's fingerprint has been detected

  refraction-networking/utls#321 · Filter by author Nyx2022 opened on Dec 13, 2024
  2

• I'm encountering an error: "Unknown field 'ClientHelloID' in struct literal." What should I do?

  refraction-networking/utls#318 · Filter by author pighhh opened on Oct 1, 2024

• ALPS Client Hints

  refraction-networking/utls#315 · Filter by author ilyanaum opened on Sep 11, 2024

• Android fingerprint looks like wrong?

  refraction-networking/utls#314 · Filter by author Fangliding opened on Sep 8, 2024

• ImportTLSClientHello server is dead

  refraction-networking/utls#312 · Filter by author 3052 opened on Aug 31, 2024

• please add full support E-SNI and ECH

  refraction-networking/utls#311 · Filter by author Morrigan-Ship opened on Aug 30, 2024

• header fields order like chrome

  refraction-networking/utls#310 · Filter by author kayon opened on Aug 15, 2024
  1

• How can I check clientHello in server

  refraction-networking/utls#309 · Filter by author WAY29 opened on Jul 31, 2024
  1

• can test this websocket from website

  refraction-networking/utls#308 · Filter by author xlpxxx opened on Jul 24, 2024
  3

• Test coverage is too low

  help wanted
  refraction-networking/utls#304 · Filter by author gaukas opened on Jul 16, 2024
  1

• Any plans implements in Python

  refraction-networking/utls#295 · Filter by author Fly-Playgroud opened on Apr 22, 2024
  1

• Towards better versioning policy

  blockerhelp wanted
  refraction-networking/utls#290 · Filter by author gaukas opened on Apr 2, 2024
  4