h2o/quicly

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A modular QUIC stack designed primarily for H2O

Stars: 663
Forks: 131
Open beginner issues: 0
Indexed issues: 75
Avg merge: 8h 49m
Merged PRs (30d): 8

Dominant language: C
License: MIT
Last GitHub push: Sep 15, 2026
Latest indexed: Sep 17, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

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75 open issues indexed

Event logging Open

h2o/quicly#21 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Event log issues Open

h2o/quicly#43 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Code should handle Initial packet injection Open

h2o/quicly#47 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
RTT sample should not be taken on ack of ACK-only packet Open

h2o/quicly#48 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Replay Decoding DoS and other thoughts on malicious decoding costs Open

h2o/quicly#60 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
implement key update Open

h2o/quicly#62 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
integrity protection method for tokens Open

h2o/quicly#65 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
restrict frame types in 0-RTT packets Open

h2o/quicly#70 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
support for path probing and migration Open

h2o/quicly#92 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
sampling-based, accumulative event logging Open

h2o/quicly#93 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add application limited logic to reno CC Open

h2o/quicly#109 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
t/e2e.t occasionally fails Open

h2o/quicly#117 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Add notion of persistent congestion Open

h2o/quicly#132 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
reconsider 75% drop test Open

h2o/quicly#151 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Send ACK for each packet immediately after loss Open

h2o/quicly#155 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Ignore ack delay when setting PTO for crypto packets Open

h2o/quicly#159 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Optimizing responses to ClientHello Open

h2o/quicly#160 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Prioritize handshake data when choosing what to send on PTO Open

h2o/quicly#162 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Speculative PTO can be too aggressive Open

h2o/quicly#173 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
apply limits of previous connection when processing 0-RTT packets Open

h2o/quicly#174 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Thread-local not support in some platform in xcode Open

h2o/quicly#180 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Disable encryption Open

h2o/quicly#181 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
client shows not found Open

h2o/quicly#185 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
add API to reset stream-related states in case of 0-RTT rejection Open

h2o/quicly#187 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
expand error code space to 62 bits Open

h2o/quicly#191 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add API for packet vectorized / async processing Open

h2o/quicly#193 · 2 comments · 4 reactions · 0 assignees · Indexed Sep 17, 2026
token-based connection resumption Open

h2o/quicly#194 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Apply different loss timer to Initial and Handshake packets vs. 1-RTT packets Open

h2o/quicly#202 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Allow smaller stateless resets (-23) Open

h2o/quicly#204 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Encode RTT in resumption token Open

h2o/quicly#205 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Any performance numbers? Open

h2o/quicly#247 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
API for keeping connection alive Open

h2o/quicly#259 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Implement CID retirement Open

h2o/quicly#260 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add support for delayed ack extension Open

h2o/quicly#261 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Send MAX_* frames more frequently Open

h2o/quicly#272 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
3x amplification limit should be applied at datagram level Open

h2o/quicly#301 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Minimizing the cost of sentmap iteration Open

h2o/quicly#332 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Testing cli for 0RTT/Connection migration Open

h2o/quicly#336 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Stream Prioritization Open

h2o/quicly#338 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
e2e/stateless-reset probabilistically fails Open

h2o/quicly#342 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Check presence of stream buffer data Open

h2o/quicly#346 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Duplicate Packet Number Handling Open

h2o/quicly#348 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Does quicly support client based authentication ie.., Mutual TLS(mTLS)? Open

h2o/quicly#355 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Quicly CPU performance problems with satellite scenario (large cwnd) Open

h2o/quicly#364 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
[h2olog] refactoring the probe definitions Open

h2o/quicly#372 · 4 comments · 3 reactions · 0 assignees · Indexed Sep 17, 2026
persistent congestion Open

h2o/quicly#376 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
ECN support Open

h2o/quicly#398 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
[server-side] path validation using server CID Open

h2o/quicly#410 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
SIGILL at `vmovdqu`s Open

h2o/quicly#418 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Congestion window validation Open

h2o/quicly#431 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026

h2o/quicly

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