Do not clip error codes larger than QUIC_LAST_ERROR.
When an incoming Google QUIC CONNECTION_CLOSE or GOAWAY frame has an error code
larger than QUIC_LAST_ERROR, preserve the value instead of replacing it with
QUIC_LAST_ERROR. This will make debugging of newly added error codes emitted by
the server received by older versions of Chrome significantly little less
confusing.
IETF QUIC behavior is not affected:
IETF CONNECTION_CLOSE can also carry a QuicErrorCode value in its description
which is parsed out on the receiving side, but that did not suffer from being
clipped to QUIC_LAST_ERROR. This CL adds a test for that behavior.
IETF GOAWAY frame does not carry an error code.
Protected by FLAGS_quic_reloadable_flag_quic_do_not_clip_received_error_code.
PiperOrigin-RevId: 334160593
Change-Id: Ic830254c0dcb1cb6ca6687bae7a699df21b7e0e3
2 files changed
