Make QuicDispatcher reject packets with invalid short connection IDs
This CLs enforces a MUST in the IETF spec that dictates that clients cannot send initial connection IDs under 8 bytes. The QuicDispatcher will reject (and close the connection of) any packet whose connection ID is shorter than 8 (or what it was configured for). The behavior is disabled by quartc. This only impacts v99 because connection IDs of any length other than 8 are already currently dropped when using versions < 99.
gfe-relnote: v99 only, not flag protected
PiperOrigin-RevId: 239629063
Change-Id: I85cee11d84566073e8cbb3569ba3e88e91192f2a
diff --git a/quic/core/quic_connection_id.h b/quic/core/quic_connection_id.h
index 262a658..d51366f 100644
--- a/quic/core/quic_connection_id.h
+++ b/quic/core/quic_connection_id.h
@@ -31,6 +31,10 @@
// versions < v99, and is the default picked for all versions.
const uint8_t kQuicDefaultConnectionIdLength = 8;
+// According to the IETF spec, the initial server connection ID generated by
+// the client must be at least this long.
+const uint8_t kQuicMinimumInitialConnectionIdLength = 8;
+
class QUIC_EXPORT_PRIVATE QuicConnectionId {
public:
// Creates a connection ID of length zero.
