Respect QuicAllowed policy for new streams

net/http/http_network_session.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/http/http_network_session.h"
 
 #include <utility>
 
 #include "base/atomic_sequence_num.h"
 #include "base/compiler_specific.h"
@@ skipping 55 matching lines @@
 // The maximum receive window sizes for HTTP/2 sessions and streams.
 const int32_t kSpdySessionMaxRecvWindowSize = 15 * 1024 * 1024;  // 15 MB
 const int32_t kSpdyStreamMaxRecvWindowSize = 6 * 1024 * 1024;    //  6 MB
 // QUIC's socket receive buffer size.
 // We should adaptively set this buffer size, but for now, we'll use a size
 // that seems large enough to receive data at line rate for most connections,
 // and does not consume "too much" memory.
 const int32_t kQuicSocketReceiveBufferSize = 1024 * 1024;  // 1MB
 
 HttpNetworkSession::Params::Params()
-    : client_socket_factory(NULL),
-      host_resolver(NULL),
-      cert_verifier(NULL),
-      channel_id_service(NULL),
-      transport_security_state(NULL),
-      cert_transparency_verifier(NULL),
-      ct_policy_enforcer(NULL),
-      proxy_service(NULL),
-      ssl_config_service(NULL),
-      http_auth_handler_factory(NULL),
-      net_log(NULL),
-      host_mapping_rules(NULL),
-      socket_performance_watcher_factory(NULL),
+    : client_socket_factory(nullptr),
+      host_resolver(nullptr),
+      cert_verifier(nullptr),
+      channel_id_service(nullptr),
+      transport_security_state(nullptr),
+      cert_transparency_verifier(nullptr),
+      ct_policy_enforcer(nullptr),
+      proxy_service(nullptr),
+      ssl_config_service(nullptr),
+      http_auth_handler_factory(nullptr),
+      net_log(nullptr),
+      host_mapping_rules(nullptr),
+      socket_performance_watcher_factory(nullptr),
       ignore_certificate_errors(false),
       testing_fixed_http_port(0),
       testing_fixed_https_port(0),
       enable_tcp_fast_open_for_ssl(false),
+      dynamic_shared_params(nullptr),
       enable_spdy_ping_based_connection_checking(true),
       enable_http2(true),
       spdy_session_max_recv_window_size(kSpdySessionMaxRecvWindowSize),
       spdy_stream_max_recv_window_size(kSpdyStreamMaxRecvWindowSize),
       time_func(&base::TimeTicks::Now),
       enable_http2_alternative_service_with_different_host(false),
       enable_quic_alternative_service_with_different_host(true),
-      enable_quic(false),
       disable_quic_on_timeout_with_open_streams(false),
       quic_always_require_handshake_confirmation(false),
       quic_disable_connection_pooling(false),
       quic_load_server_info_timeout_srtt_multiplier(0.25f),
       quic_enable_connection_racing(false),
       quic_enable_non_blocking_io(false),
       quic_disable_disk_cache(false),
       quic_prefer_aes(false),
       quic_socket_receive_buffer_size(kQuicSocketReceiveBufferSize),
       quic_delay_tcp_race(true),
       quic_max_server_configs_stored_in_properties(0u),
-      quic_clock(NULL),
-      quic_random(NULL),
+      quic_clock(nullptr),
+      quic_random(nullptr),
       quic_max_packet_length(kDefaultMaxPacketSize),
       enable_user_alternate_protocol_ports(false),
       quic_crypto_client_stream_factory(
           QuicCryptoClientStreamFactory::GetDefaultFactory()),
       quic_close_sessions_on_ip_change(false),
       quic_idle_connection_timeout_seconds(kIdleConnectionTimeoutSeconds),
       quic_reduced_ping_timeout_seconds(kPingTimeoutSecs),
       quic_packet_reader_yield_after_duration_milliseconds(
           kQuicYieldAfterDurationMilliseconds),
       quic_disable_preconnect_if_0rtt(false),
       quic_migrate_sessions_on_network_change(false),
       quic_migrate_sessions_early(false),
       quic_allow_server_migration(false),
       quic_disable_bidirectional_streams(false),
       quic_force_hol_blocking(false),
       quic_race_cert_verification(false),
       quic_do_not_fragment(false),
-      proxy_delegate(NULL),
+      proxy_delegate(nullptr),
       enable_token_binding(false),
       http_09_on_non_default_ports_enabled(false) {
   quic_supported_versions.push_back(QUIC_VERSION_35);
 }
 
 HttpNetworkSession::Params::Params(const Params& other) = default;
 
 HttpNetworkSession::Params::~Params() {}
 
+bool HttpNetworkSession::Params::enable_quic() const {
+  return dynamic_shared_params && dynamic_shared_params->enable_quic;
+}
+
+HttpNetworkSession::DynamicSharedParams::DynamicSharedParams()
+    : enable_quic(false) {}
+
+HttpNetworkSession::DynamicSharedParams::~DynamicSharedParams() {}
+
 // TODO(mbelshe): Move the socket factories into HttpStreamFactory.
 HttpNetworkSession::HttpNetworkSession(const Params& params)
     : net_log_(params.net_log),
       http_server_properties_(params.http_server_properties),
       cert_verifier_(params.cert_verifier),
       http_auth_handler_factory_(params.http_auth_handler_factory),
       proxy_service_(params.proxy_service),
       ssl_config_service_(params.ssl_config_service),
       push_delegate_(nullptr),
       quic_stream_factory_(
@@ skipping 134 matching lines @@
 }
 
 std::unique_ptr<base::Value> HttpNetworkSession::SpdySessionPoolInfoToValue()
     const {
   return spdy_session_pool_.SpdySessionPoolInfoToValue();
 }
 
 std::unique_ptr<base::Value> HttpNetworkSession::QuicInfoToValue() const {
   std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
   dict->Set("sessions", quic_stream_factory_.QuicStreamFactoryInfoToValue());
-  dict->SetBoolean("quic_enabled", params_.enable_quic);
+  dict->SetBoolean("quic_enabled", params_.enable_quic());
   std::unique_ptr<base::ListValue> connection_options(new base::ListValue);
   for (QuicTagVector::const_iterator it =
            params_.quic_connection_options.begin();
        it != params_.quic_connection_options.end(); ++it) {
     connection_options->AppendString("'" + QuicTagToString(*it) + "'");
   }
   dict->Set("connection_options", std::move(connection_options));
 
   std::unique_ptr<base::ListValue> origins_to_force_quic_on(
       new base::ListValue);
@@ skipping 45 matching lines @@
 bool HttpNetworkSession::IsProtocolEnabled(NextProto protocol) const {
   switch (protocol) {
     case kProtoUnknown:
       NOTREACHED();
       return false;
     case kProtoHTTP11:
       return true;
     case kProtoHTTP2:
       return params_.enable_http2;
     case kProtoQUIC:
-      return params_.enable_quic;
+      return params_.enable_quic();
   }
   NOTREACHED();
   return false;
 }
 
 void HttpNetworkSession::SetServerPushDelegate(
     std::unique_ptr<ServerPushDelegate> push_delegate) {
   DCHECK(!push_delegate_ && push_delegate);
 
   push_delegate_ = std::move(push_delegate);
@@ skipping 81 matching lines @@
       break;
     case base::MemoryState::SUSPENDED:
     // Note: Not supported at present. Fall through.
     case base::MemoryState::UNKNOWN:
       NOTREACHED();
       break;
   }
 }
 
 }  // namespace net