Send HTTP/3 GOAWAY for ImmediateGoAwaySession in tests.
Testing only. not protected.
PiperOrigin-RevId: 310955172
Change-Id: I4031680a40ebdf50a65e5faa6c34e6581343ec4a
QUICHE (QUIC, Http/2, Etc) is Google‘s implementation of QUIC and related protocols. It powers Chromium as well as Google’s QUIC servers and some other projects.