QUIC - disable QUIC if packet loss rate is bad for a connection.

net/quic/quic_stream_factory_test.cc

 // 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.
 
 #include "net/quic/quic_stream_factory.h"
 
 #include "base/run_loop.h"
 #include "base/strings/string_util.h"
 #include "net/base/test_data_directory.h"
 #include "net/cert/cert_verifier.h"
@@ skipping 117 matching lines @@
   static void SetEnableConnectionRacing(QuicStreamFactory* factory,
                                         bool enable_connection_racing) {
     factory->enable_connection_racing_ = enable_connection_racing;
   }
 
   static void SetDisableDiskCache(QuicStreamFactory* factory,
                                   bool disable_disk_cache) {
     factory->disable_disk_cache_ = disable_disk_cache;
   }
 
+  static bool GetQuicIsDisabled(QuicStreamFactory* factory) {
+    return factory->quic_is_disabled_;
+  }
+
   static size_t GetNumberOfActiveJobs(QuicStreamFactory* factory,
                                       const QuicServerId& server_id) {
     return (factory->active_jobs_[server_id]).size();
   }
 };
 
 class MockQuicServerInfo : public QuicServerInfo {
  public:
   MockQuicServerInfo(const QuicServerId& server_id)
       : QuicServerInfo(server_id) {}
@@ skipping 51 matching lines @@
                  kDefaultMaxPacketSize,
                  std::string(),
                  SupportedVersions(GetParam().version),
                  /*enable_port_selection=*/true,
                  /*always_require_handshake_confirmation=*/false,
                  /*disable_connection_pooling=*/false,
                  /*load_server_info_timeout_srtt_multiplier=*/0.0f,
                  /*enable_connection_racing=*/false,
                  /*enable_non_blocking_io=*/true,
                  /*disable_disk_cache=*/false,
+                 /*max_number_of_lossy_connections=*/0,
+                 /*packet_loss_threshold=*/1000.0f,
                  /*receive_buffer_size=*/0,
                  QuicTagVector()),
         host_port_pair_(kDefaultServerHostName, kDefaultServerPort),
         is_https_(false),
         privacy_mode_(PRIVACY_MODE_DISABLED) {
     factory_.set_require_confirmation(false);
     clock_->AdvanceTime(QuicTime::Delta::FromSeconds(1));
     QuicStreamFactoryPeer::SetEnableConnectionRacing(
         &factory_, GetParam().enable_connection_racing);
   }
@@ skipping 1455 matching lines @@
   // If we are waiting for disk cache, we would have posted a task. Verify that
   // the CancelWaitForDataReady task hasn't been posted.
   ASSERT_EQ(0u, runner_->GetPostedTasks().size());
 
   scoped_ptr<QuicHttpStream> stream = request.ReleaseStream();
   EXPECT_TRUE(stream.get());
   EXPECT_TRUE(socket_data.at_read_eof());
   EXPECT_TRUE(socket_data.at_write_eof());
 }
 
+TEST_P(QuicStreamFactoryTest, BadPacketLoss) {
+  factory_.set_quic_server_info_factory(&quic_server_info_factory_);
+  QuicStreamFactoryPeer::SetTaskRunner(&factory_, runner_.get());
+  EXPECT_FALSE(QuicStreamFactoryPeer::GetQuicIsDisabled(&factory_));
+
+  // OnBadPacketLoss should disable QUIC.
+  QuicServerId server_id(host_port_pair_, is_https_, privacy_mode_);
+  factory_.OnBadPacketLoss(server_id);
+  EXPECT_TRUE(QuicStreamFactoryPeer::GetQuicIsDisabled(&factory_));
+
+  QuicStreamRequest request(&factory_);
+  EXPECT_EQ(ERR_QUIC_PROTOCOL_ERROR,
+            request.Request(host_port_pair_, is_https_, privacy_mode_, "GET",
+                            net_log_, callback_.callback()));
+}
+
 }  // namespace test
 }  // namespace net