tree 399153c8b96648b82d9023feb9e9b17eee09bfe0
parent ed01f7a39c3915b878a0c447dbeb73b9044c6797
author diannahu <diannahu@google.com> 1649719017 -0700
committer Copybara-Service <copybara-worker@google.com> 1649719065 -0700

Validate that received GOAWAY last-stream-ID fields are non-increasing in oghttp2.

This CL is a follow-up to a comment in cl/439588951 about enforcing this
section of the specification:

"An endpoint MAY send multiple GOAWAY frames if circumstances change. [...]
Endpoints MUST NOT increase the value they send in the last stream identifier,
since the peers might already have retried unprocessed requests on another
connection." (From https://httpwg.org/specs/rfc7540.html#GOAWAY)

This CL updates OgHttp2Session to follow this part of the specification, which
also increases parity with nghttp2 behavior:
http://google3/third_party/nghttp2/src/lib/nghttp2_session.c;l=4730-4738;rcl=439727518

PiperOrigin-RevId: 441023801