Migrates QUIC sessions to a new network when old network is (about to be) disconnected.

net/quic/test_tools/quic_test_packet_maker.cc

 // 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.
 
 #include "net/quic/test_tools/quic_test_packet_maker.h"
 
 #include <list>
 
 #include "net/quic/quic_framer.h"
 #include "net/quic/quic_http_utils.h"
@@ skipping 15 matching lines @@
       host_(host),
       spdy_request_framer_(HTTP2),
       spdy_response_framer_(HTTP2) {}
 
 QuicTestPacketMaker::~QuicTestPacketMaker() {}
 
 void QuicTestPacketMaker::set_hostname(const std::string& host) {
   host_.assign(host);
 }
 
+scoped_ptr<QuicEncryptedPacket> QuicTestPacketMaker::MakePingPacket(
+    QuicPacketNumber num,
+    bool include_version) {
+  QuicPacketHeader header;
+  header.public_header.connection_id = connection_id_;
+  header.public_header.reset_flag = false;
+  header.public_header.version_flag = include_version;
+  header.public_header.packet_number_length = PACKET_1BYTE_PACKET_NUMBER;
+  header.packet_number = num;
+  header.entropy_flag = false;
+  header.fec_flag = false;
+  header.fec_group = 0;
+
+  QuicPingFrame ping;
+  return scoped_ptr<QuicEncryptedPacket>(MakePacket(header, QuicFrame(ping)));
+}
+
 scoped_ptr<QuicEncryptedPacket> QuicTestPacketMaker::MakeRstPacket(
     QuicPacketNumber num,
     bool include_version,
     QuicStreamId stream_id,
     QuicRstStreamErrorCode error_code) {
   QuicPacketHeader header;
   header.public_header.connection_id = connection_id_;
   header.public_header.reset_flag = false;
   header.public_header.version_flag = include_version;
   header.public_header.packet_number_length = PACKET_1BYTE_PACKET_NUMBER;
@@ skipping 302 matching lines @@
   header_.public_header.version_flag = should_include_version;
   header_.public_header.packet_number_length = PACKET_1BYTE_PACKET_NUMBER;
   header_.packet_number = packet_number;
   header_.fec_group = 0;
   header_.entropy_flag = false;
   header_.fec_flag = false;
 }
 
 }  // namespace test
 }  // namespace net