tree cd8a8635bc440c6d85fc792768b5381f36fcbf01
parent 4f74fb53fec935b4e2db0799fb119d8a7f9b9e97
author fayang <fayang@google.com> 1672284684 -0800
committer Copybara-Service <copybara-worker@google.com> 1672284717 -0800

Optimize client handling of server preferred address:
1) Start validating server preferred address on handshake complete (rather than confirmed)
2) While validation is pending, duplicate coalesced packets (up to 5) on both paths.
This is behind client_connection_option SPA2.

PiperOrigin-RevId: 498291601