tree 1439ad539a2522a2a0e9acf486e8eb271563fa10
parent 99ed36c5e1b70a7a22f4f46e32f444b73c3f097d
author dschinazi <dschinazi@google.com> 1625789159 -0700
committer Copybara-Service <copybara-worker@google.com> 1625789300 -0700

Refactor HTTP/3 Datagram

This CL refactors our HTTP/3 Datagram APIs in order to prepare for the transition from draft-ietf-masque-h3-datagram-00 to draft-ietf-masque-h3-datagram-02. This CL switches the QuicSpdySession APIs to use the model and mindset from draft-02, but it still keeps draft-00 on the wire for now.

This CL has no server-side behavior changes. There is one behavior change on the client: the Datagram-Flow-Id now always uses a flow ID equal to the stream ID. That allows simplifying client code. The server code currently still uses whichever flow ID came in the Datagram-Flow-Id header. We'll keep it that way until we can remove support for draft-00.

The mismatch between draft-00 and draft-02 does mean that in some places we have variables called "stream_id" that contain the flow ID when draft-00 is in use, but it'll make it easier to reason about draft-02 which is the direction we're going in.

PiperOrigin-RevId: 383744375