Cannot parse QUIC ClientHello split into two packets

Question

Cannot parse QUIC ClientHello split into two packets

sfionov opened this issue 9 months ago · 2 comments

sfionov commented 9 months ago

Steps to reproduce:

Download latest Chromium snapshot from https://commondatastorage.googleapis.com/chromium-browser-snapshots/index.html?prefix=Mac_Arm/1260335/
Run Chromium --enable-quic --origin-to-force-quic-on=http3.is:443
See AGQuicProcessingUnit: Failed to parse ClientHello in log

Answer 1 · 2024-02-14T10:38:28.000Z

Why do they split it?

We'll need this in v1.14 or later?

Answer 2 · 2024-02-14T10:45:57.000Z

@ameshkov They now send "post-quantum" X25519Kyber768Draft00 key (additional 1200+ bytes) in key_share extension along with usual X25519 key. Also, on sites with ECH, ClientHello is split due to ECH extension.

I think we may correct it in CL1.15