tree d6d64d99729d24f83846d413a929059e9270d112
parent e5c727cc55dcd855a44034424c84b4a4a7d1135a
author ericorth <ericorth@google.com> 1651008765 -0700
committer Copybara-Service <copybara-worker@google.com> 1651008866 -0700

Prepare for toy QUIC CONNECT proxy server

Various updates to QuicServer and QuicSimpleServerStream that will be needed to handle CONNECT requests in a subsequent CL:
* Added support for QuicSimpleServerBackends to request abrupt termination of the stream. Typical behavior for CONNECT errors.
* Expand QuicSimpleServerStream's ability to pass intermediate request data on to the backend. A little bit of functionality was already in place with the ability to call to the backend for CONNECT and CONNECT-like requests as soon as headers are read. But in order to pass data frames through the proxy, need to also pass data as it is read instead of waiting for all data. Extra functions created to pass this partial data separately from full data, with a default implementation for the backend to return an error.  Similarly, added an extra function for the backend to pass partial response data through the stream.

PiperOrigin-RevId: 444669215