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

components/domain_reliability/util.cc

 // Copyright 2014 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 "components/domain_reliability/util.h"
 
 #include <stddef.h>
 
 #include "base/callback.h"
 #include "base/logging.h"
@@ skipping 237 matching lines @@
   // previous handshake message.
   { net::QUIC_CRYPTO_MESSAGE_WHILE_VALIDATING_CLIENT_HELLO,
    "quic.crypto_message_while_validating_client_hello" },
   // A server config update arrived before the handshake is complete.
   { net::QUIC_CRYPTO_UPDATE_BEFORE_HANDSHAKE_COMPLETE,
    "quic.crypto.update_before_handshake_complete" },
   // This connection involved a version negotiation which appears to have been
   // tampered with.
   { net::QUIC_VERSION_NEGOTIATION_MISMATCH,
    "quic.version_negotiation_mismatch" },
+
+  // Network change and connection migration errors.
+
+  // IP address changed causing connection close.
+  { net::QUIC_IP_ADDRESS_CHANGED, "quic.ip_address_changed" },
+  // Network changed, but connection had no migratable streams.
+  { net::QUIC_CONNECTION_MIGRATION_NO_MIGRATABLE_STREAMS,
+    "quic.connection_migration_no_migratable_streams" },
+  // Connection changed networks too many times.
+  { net::QUIC_CONNECTION_MIGRATION_TOO_MANY_CHANGES,
+    "quic.connection_migration_too_many_changes" },
+  // Connection migration was attempted, but there was no new network to
+  // migrate to.
+  { net::QUIC_CONNECTION_MIGRATION_NO_NEW_NETWORK,
+    "quic.connection_migration_no_new_network" },
+
   // No error. Used as bound while iterating.
   { net::QUIC_LAST_ERROR, "quic.last_error"}
 };
 
 // static
 const int quic_error_map_size =
     sizeof(quic_error_map) / sizeof(QuicErrorMapping);
 
 static_assert(quic_error_map_size == net::kActiveQuicErrorCount,
               "quic_error_map is not in sync with quic protocol!");
@@ skipping 171 matching lines @@
 ActualTime::~ActualTime() {}
 
 base::Time ActualTime::Now() { return base::Time::Now(); }
 base::TimeTicks ActualTime::NowTicks() { return base::TimeTicks::Now(); }
 
 scoped_ptr<MockableTime::Timer> ActualTime::CreateTimer() {
   return scoped_ptr<MockableTime::Timer>(new ActualTimer());
 }
 
 }  // namespace domain_reliability