Disable QUIC when a connection timesout with open streams by setting threshold value to 1 when flag…

net/quic/quic_stream_factory.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 <algorithm>
 #include <set>
 #include <utility>
 
@@ skipping 550 matching lines @@
     bool prefer_aes,
     int max_number_of_lossy_connections,
     float packet_loss_threshold,
     int max_disabled_reasons,
     int threshold_public_resets_post_handshake,
     int threshold_timeouts_with_open_streams,
     int socket_receive_buffer_size,
     bool delay_tcp_race,
     int max_server_configs_stored_in_properties,
     bool close_sessions_on_ip_change,
+    bool disable_quic_on_timeout_with_open_streams,
     int idle_connection_timeout_seconds,
     bool migrate_sessions_on_network_change,
     const QuicTagVector& connection_options)
     : require_confirmation_(true),
       host_resolver_(host_resolver),
       client_socket_factory_(client_socket_factory),
       http_server_properties_(http_server_properties),
       transport_security_state_(transport_security_state),
       cert_transparency_verifier_(cert_transparency_verifier),
       quic_crypto_client_stream_factory_(quic_crypto_client_stream_factory),
@@ skipping 36 matching lines @@
           kQuicYieldAfterDurationMilliseconds)),
       close_sessions_on_ip_change_(close_sessions_on_ip_change),
       migrate_sessions_on_network_change_(
           migrate_sessions_on_network_change &&
           NetworkChangeNotifier::AreNetworkHandlesSupported()),
       port_seed_(random_generator_->RandUint64()),
       check_persisted_supports_quic_(true),
       has_initialized_data_(false),
       task_runner_(nullptr),
       weak_factory_(this) {
+  if (disable_quic_on_timeout_with_open_streams)
+    threshold_timeouts_with_open_streams_ = 1;
   DCHECK(transport_security_state_);
   DCHECK(http_server_properties_);
   crypto_config_.set_user_agent_id(user_agent_id);
   crypto_config_.AddCanonicalSuffix(".c.youtube.com");
   crypto_config_.AddCanonicalSuffix(".googlevideo.com");
   crypto_config_.AddCanonicalSuffix(".googleusercontent.com");
   // TODO(rtenneti): http://crbug.com/487355. Temporary fix for b/20760730 until
   // channel_id_service is supported in cronet.
   if (channel_id_service) {
     crypto_config_.SetChannelIDSource(
@@ skipping 961 matching lines @@
   // Since the session was active, there's no longer an
   // HttpStreamFactoryImpl::Job running which can mark it broken, unless the TCP
   // job also fails. So to avoid not using QUIC when we otherwise could, we mark
   // it as recently broken, which means that 0-RTT will be disabled but we'll
   // still race.
   http_server_properties_->MarkAlternativeServiceRecentlyBroken(
       alternative_service);
 }
 
 }  // namespace net