tree f6b2d9b15313771d57c5308d307fe6949d1689ca
parent d17a7400d12793f89e4e98c6dff03e8d828ae933
author fayang <fayang@google.com> 1566521980 -0700
committer Copybara-Service <copybara-worker@google.com> 1566587971 -0700

gfe-relnote: In QUIC, add anti-amplification limit. Protected by version T099.

Anti-amplification limit kicks in before address validation. Now, server can only validate address by processing HANDSHAKE encrypted packet since address validation via token is not implemented.

In T099, deprecate HANDSHAKE_MODE and PTO is armed when 1) handshake is not confirmed 2) or there is packets in flight. Such that when PTO fires, at least 1 packet is sent to avoid handshake deadlock due to anti-amplification limit in case of packet losses.

PiperOrigin-RevId: 264960590
Change-Id: Ib2d9749b773af9328f96c176a49b2505be006b00