hyperium/h3

View on GitHub

Stars: 890
Forks: 136
Open beginner issues: 0
Indexed issues: 32
Avg merge: 14d 20h
Merged PRs (30d): 2

Dominant language: Rust
License: MIT
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

32 open issues indexed

h3-quinn: `stop_sending` during an outstanding read is deferred until that read completes, so the peer gets STOP_SENDING with code 0 Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

hyperium/h3#361 · 1 comment · Opened Aug 20, 2026
`max_webtransport_sessions` is advertised but not enforced Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

hyperium/h3#355 · Opened Aug 12, 2026
Invalid WebTransport CONNECT returns `Ok(WebTransportSession)` after HTTP 400 Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

hyperium/h3#354 · Opened Aug 12, 2026
`AsyncWrite` reduces typed stream failures to `io::ErrorKind::Other` Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

hyperium/h3#353 · Opened Aug 12, 2026
Request reset cannot be observed independently while body polling is paused Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

hyperium/h3#352 · Opened Aug 12, 2026
No independently pollable peer `STOP_SENDING` notification Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

hyperium/h3#350 · Opened Aug 12, 2026
No WebTransport session-close receive or send API Open

A-h3-webtransport

Difficulty 5/5 Over a week Newbie friendliness 45/100

hyperium/h3#349 · Opened Aug 12, 2026
`accept_bi()` head-of-line blocks while resolving the first frame Open

A-h3-webtransport

Difficulty 5/5 Over a week Newbie friendliness 42/100

hyperium/h3#348 · 1 comment · Opened Aug 12, 2026
Support Safari/Network.framework hybrid WebTransport negotiation and initial flow-control capsules Open

A-h3-webtransport

Difficulty 5/5 Over a week Newbie friendliness 38/100

hyperium/h3#347 · 1 comment · Opened Aug 10, 2026
`FrameStream::poll_next` / `poll_data` discards already-buffered bytes when QUIC connection error arrives in same recv batch Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

hyperium/h3#338 · Opened Apr 27, 2026
Direct path import of h3-quinn in test Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

hyperium/h3#335 · 1 comment · Opened Mar 8, 2026
WebTransportSession shouldn't take ownership of Connection<C, B> Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

hyperium/h3#327 · 6 comments · Opened Dec 10, 2025
h3 quinn example doesn't seem well behaved when tested with curl Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

hyperium/h3#321 · 1 comment · 1 reaction · Opened Oct 7, 2025
Sending datagrams is asynchronous. Open

A-h3-datagram C-feature E-medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

hyperium/h3#307 · 1 reaction · Opened May 14, 2025
Refactor quic traits `Connection` and `OpenStreams` to use `self: Pin<&mut Self>` instead of `&mut self` Open

A-trait B-rfc C-performance C-refactor

Difficulty 5/5 Over a week Newbie friendliness 25/100

hyperium/h3#298 · Opened Apr 8, 2025
Start decoding headers once enought data is received Open

C-feature C-refactor E-hard

hyperium/h3#294 · 1 reaction · 1 assignee · Opened Mar 28, 2025
Create API for http/3 extensions like WebTransport Open

B-rfc C-feature

Difficulty 5/5 Over a week Newbie friendliness 30/100

hyperium/h3#293 · 1 comment · 4 reactions · Opened Mar 27, 2025
Streams should be reset when the RequestStream dropped Open

E-medium

Difficulty 4/5 3-5 days Newbie friendliness 35/100

hyperium/h3#262 · 1 comment · Opened Nov 5, 2024
WT may not require H3 frames Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

hyperium/h3#216 · Opened Nov 29, 2023
GREASE incompatible with Cloudflare Open

needs-reproduction

Difficulty 4/5 3-5 days Newbie friendliness 35/100

hyperium/h3#206 · 21 comments · 2 reactions · Opened Jul 14, 2023
WebTransport: stream priority Open

B-rfc C-feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

hyperium/h3#197 · 3 comments · 3 reactions · Opened Jun 16, 2023
Make `server::Connection` methods not require `&mut self` Open

B-rfc C-refactor

Difficulty 5/5 Over a week Newbie friendliness 35/100

hyperium/h3#186 · 5 comments · 1 reaction · Opened Apr 6, 2023
Clarify & simplify quic traits Open

A-trait B-rfc C-refactor

Difficulty 5/5 Over a week Newbie friendliness 25/100

hyperium/h3#177 · 6 comments · Opened Mar 17, 2023
CONNECT and tunnel support Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

hyperium/h3#164 · 6 comments · 2 reactions · Opened Feb 21, 2023
Better names for h3::quic Open

C-refactor

Difficulty 4/5 3-5 days Newbie friendliness 35/100

hyperium/h3#146 · 5 comments · 1 reaction · Opened Nov 16, 2022
duvet for all rfcs? Open

A-docs E-medium

Difficulty 4/5 3-5 days Newbie friendliness 25/100

hyperium/h3#129 · 2 comments · 2 reactions · Opened Sep 14, 2022
Lacking a way for consumer to reset stream Open

C-feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

hyperium/h3#124 · Opened Sep 3, 2022
Interop with Kwik/Flupke fails Open

C-bug

Difficulty 4/5 3-5 days Newbie friendliness 28/100

hyperium/h3#118 · 3 comments · Opened Aug 18, 2022
Setup h3spec in CI Open

E-medium

Difficulty 3/5 1-2 days Newbie friendliness 35/100

hyperium/h3#110 · 1 comment · Opened Aug 2, 2022
send_data for arbitrary buffer type Open

B-rfc C-refactor

Difficulty 5/5 Over a week Newbie friendliness 32/100

hyperium/h3#93 · 3 comments · Opened Jun 17, 2022
write method calls send_data before poll_ready Open

C-bug E-easy

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

hyperium/h3#78 · 5 comments · Opened Feb 8, 2022
Add WebTransport support Open

A-client A-docs C-feature E-medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

hyperium/h3#71 · 10 comments · 15 reactions · Opened Dec 24, 2021

hyperium/h3

Get new issues in your inbox