Allow QUIC clients to accept STK/SCFG updates on an existing connection.

net/quic/crypto/quic_crypto_client_config.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_QUIC_CRYPTO_QUIC_CRYPTO_CLIENT_CONFIG_H_
 #define NET_QUIC_CRYPTO_QUIC_CRYPTO_CLIENT_CONFIG_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 190 matching lines @@
   // present in a version negotiation packet previously recevied from the
   // server. The contents of this list will be compared against the list of
   // versions provided in the VER tag of the server hello.
   QuicErrorCode ProcessServerHello(const CryptoHandshakeMessage& server_hello,
                                    QuicConnectionId connection_id,
                                    const QuicVersionVector& negotiated_versions,
                                    CachedState* cached,
                                    QuicCryptoNegotiatedParameters* out_params,
                                    std::string* error_details);
 
+  // Processes the message in |server_update|, updating the cached source
+  // address token, and server config.
+  // If |server_update| is invalid then |error_details| will contain an error
+  // message, and an error code will be returned. If all has gone well
+  // QUIC_NO_ERROR is returned.
+  QuicErrorCode ProcessServerConfigUpdate(
+      const CryptoHandshakeMessage& server_update,
+      QuicWallTime now,
+      CachedState* cached,
+      QuicCryptoNegotiatedParameters* out_params,
+      std::string* error_details);
+
   ProofVerifier* proof_verifier() const;
 
   // SetProofVerifier takes ownership of a |ProofVerifier| that clients are
   // free to use in order to verify certificate chains from servers. If a
   // ProofVerifier is set then the client will request a certificate chain from
   // the server.
   void SetProofVerifier(ProofVerifier* verifier);
 
   ChannelIDSource* channel_id_source() const;
 
@@ skipping 72 matching lines @@
 
   // The |user_agent_id_| passed in QUIC's CHLO message.
   std::string user_agent_id_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicCryptoClientConfig);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CRYPTO_QUIC_CRYPTO_CLIENT_CONFIG_H_