tree a1d5bf01c65b3f8fd78cde8c9f20cf38ed6ae146
parent 2a464c5105053295611521d82a31bb123daf2281
author rch <rch@google.com> 1712608517 -0700
committer Copybara-Service <copybara-worker@google.com> 1712608566 -0700

Add DNAT support for QUIC Server Preferred Address.
When a server is behind a DNAT, the address it receives packets on
will be different from the address that the client sends to. So for
QUIC Server Preferred Address the server needs to advertise a different
address than the address it will expect to receive packets on.

This change adds an an optional "expected" server preferred address to
QuicConfig and changes QuicSession to pass the expected address to
QuicConnection. Renames the QuicConnection member and method from "sent"
to "expected".

PiperOrigin-RevId: 622937854