tree 90976dfc2ae549f8ba82c391b95cc3662cbff6f8
parent 5484d93882589523d3cada9e12154e34469bd727
author QUICHE team <quiche-dev@google.com> 1668809248 -0800
committer Copybara-Service <copybara-worker@google.com> 1668809305 -0800

Allow handshaker to override QUIC transport parameters.

Due to randomized serialization of TransportParameters it is impossible for external ProofSource to guess the serialized output and compute the correct signature.
This CL allows ProofSource to pass back its version of transport parameters bitstring and uses it instead, if it's semantically equal.

No immediate prod behavior change: the default value of quic_transport_parameters is std::nullopt and parameters are left as is.

PiperOrigin-RevId: 489557924