Land Recent QUIC changes.

net/tools/quic/quic_client.h

 // Copyright (c) 2012 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.
 //
 // A toy client, which connects to a specified port and sends QUIC
 // request to that endpoint.
 
 #ifndef NET_TOOLS_QUIC_QUIC_CLIENT_H_
 #define NET_TOOLS_QUIC_QUIC_CLIENT_H_
 
@@ skipping 21 matching lines @@
 
 namespace test {
 class QuicClientPeer;
 }  // namespace test
 
 class QuicClient : public EpollCallbackInterface,
                    public ReliableQuicStream::Visitor {
  public:
   QuicClient(IPEndPoint server_address,
              const string& server_hostname,
-             const QuicVersion version,
+             const QuicVersionVector& supported_versions,
              bool print_response);
   QuicClient(IPEndPoint server_address,
              const std::string& server_hostname,
              const QuicConfig& config,
-             const QuicVersion version);
+             const QuicVersionVector& supported_versions);
 
   virtual ~QuicClient();
 
   // Initializes the client to create a connection. Should be called exactly
   // once before calling StartConnect or Connect. Returns true if the
   // initialization succeeds, false otherwise.
   bool Initialize();
 
   // "Connect" to the QUIC server, including performing synchronous crypto
   // handshake.
@@ skipping 136 matching lines @@
 
   // If overflow_supported_ is true, this will be the number of packets dropped
   // during the lifetime of the server.  This may overflow if enough packets
   // are dropped.
   int packets_dropped_;
 
   // True if the kernel supports SO_RXQ_OVFL, the number of packets dropped
   // because the socket would otherwise overflow.
   bool overflow_supported_;
 
-  // Which QUIC version does this client talk?
-  QuicVersion version_;
+  // This vector contains QUIC versions which we currently support.
+  // This should be ordered such that the highest supported version is the first
+  // element, with subsequent elements in descending order (versions can be
+  // skipped as necessary). We will always pick supported_versions_[0] as the
+  // initial version to use.
+  QuicVersionVector supported_versions_;
 
   // If true, then the contents of each response will be printed to stdout
   // when the stream is closed (in OnClose).
   bool print_response_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicClient);
 };
 
 }  // namespace tools
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_CLIENT_H_