tree 5880fc4906c792eea28914aea7413a78fb4c17c9
parent 3451f6e595c1f518ab741c24bc36a1f02d038376
author renjietang <renjietang@google.com> 1560274961 -0700
committer Copybara-Service <copybara-worker@google.com> 1560358326 -0700

Add support for HTTP/3 control stream.

Upon initialization, QuicSpdySession will create a write_unidirectional stream
and write stream type and settings when crypto handshake is completed.

The peer will receive the stream type and create a read_unidirectional stream
that reads the settings.

gfe-relnote: version 99 only. Not in prod.
PiperOrigin-RevId: 252650934
Change-Id: I708280eb94dea3d6eb7e54b96ce8ee91e2b8684f