Support LengthPrefixedConnectionIds in v99
This CL adds support for the invariants change from draft-22. It introduces a new parsing method QuicFramer::ParsePublicHeader which can parse both old and new formats, and uses it for v99 and also for all versions when gfe2_reloadable_flag_quic_use_parse_public_header is true.
gfe-relnote: change v99 encoding, protected by disabled v99 flag and by gfe2_reloadable_flag_quic_use_parse_public_header.
PiperOrigin-RevId: 260871822
Change-Id: I680d12141b2731401a818ed335af03e7c5365219
diff --git a/quic/core/quic_versions.h b/quic/core/quic_versions.h
index 1f35f7e..45caa03 100644
--- a/quic/core/quic_versions.h
+++ b/quic/core/quic_versions.h
@@ -172,6 +172,11 @@
// Returns whether this version supports client connection ID.
bool SupportsClientConnectionIds() const;
+
+ // Returns whether this version supports long header 8-bit encoded
+ // connection ID lengths as described in draft-ietf-quic-invariants-06 and
+ // draft-ietf-quic-transport-22.
+ bool HasLengthPrefixedConnectionIds() const;
};
QUIC_EXPORT_PRIVATE ParsedQuicVersion UnsupportedQuicVersion();
@@ -418,6 +423,18 @@
return transport_version >= QUIC_VERSION_99;
}
+// Returns whether this version supports long header 8-bit encoded
+// connection ID lengths as described in draft-ietf-quic-invariants-06 and
+// draft-ietf-quic-transport-22.
+QUIC_EXPORT_PRIVATE bool VersionHasLengthPrefixedConnectionIds(
+ QuicTransportVersion transport_version);
+
+// Returns whether this version label supports long header 4-bit encoded
+// connection ID lengths as described in draft-ietf-quic-invariants-05 and
+// draft-ietf-quic-transport-21.
+QUIC_EXPORT_PRIVATE bool QuicVersionLabelUses4BitConnectionIdLength(
+ QuicVersionLabel version_label);
+
// Returns the ALPN string to use in TLS for this version of QUIC.
QUIC_EXPORT_PRIVATE std::string AlpnForVersion(
ParsedQuicVersion parsed_version);
