tree 315eeaecf5be814eaa8c793a1ac33865e20d7f16
parent 7fb9bc3585637f1f29cb25de84f10548f37e223a
author martinduke <martinduke@google.com> 1684880635 -0700
committer Copybara-Service <copybara-worker@google.com> 1684880750 -0700

Refactor PerPacketOptions for QuicWriter. From the bug:

per_packet_options_ was originally designed as a vehicle for platforms to get specific instructions to their corresponding QuicWriters via a QuicConnection that didn't understand the semantics of those instructions. Therefore, it is passed to QuicConnection as a piece of memory of which the platform retains ownership.

Over time, other instructions specific to QuicConnection have appeared in this struct, as it provides a vehicle to send information to QuicWriter without changing APIs. But this violates the intent of the struct, makes Quiche functions reliant on a piece of memory owned by the platform, and is bug prone (e.g., if the platform provides the same piece of memory for all connections in a dispatcher, the outcome will be very bad).

PiperOrigin-RevId: 534577370