tree ce7a4fb951487254054dfdaaa2018da95ce83786
parent d89ce8a1499b61418a32552d94a3df15cc666ac1
author wub <wub@google.com> 1780508842 -0700
committer Copybara-Service <copybara-worker@google.com> 1780508869 -0700

Fix QUIC MTU discovery enablement while `SoftMaxPacketLength` is set.

If SoftMaxPacketLength is set to a lower value than current max packet length, `QuicConnection::SetMtuDiscoveryTarget` will incorrectly enable MTU discovery with the first probe packet size being `(SoftMaxPacketLength + MaxPacketLength)/2`, since this is smaller than MaxPacketLength, a successful probe will not be able to increase the max packet length.

See the full bug report at https://github.com/google/quiche/issues/107.

Protected by FLAGS_quic_reloadable_flag_quic_fix_mtu_discovery.

PiperOrigin-RevId: 926136428