| // Copyright 2015 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 "remoting/protocol/transport_context.h" |
| |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/location.h" |
| #include "base/single_thread_task_runner.h" |
| #include "base/threading/thread_task_runner_handle.h" |
| #include "remoting/base/url_request.h" |
| #include "remoting/protocol/http_ice_config_request.h" |
| #include "remoting/protocol/jingle_info_request.h" |
| #include "remoting/protocol/port_allocator_factory.h" |
| #include "third_party/webrtc/rtc_base/socket_address.h" |
| |
| #if !defined(OS_NACL) |
| #include "jingle/glue/thread_wrapper.h" |
| #include "net/url_request/url_request_context_getter.h" |
| #include "remoting/protocol/chromium_port_allocator_factory.h" |
| #endif // !defined(OS_NACL) |
| |
| namespace remoting { |
| namespace protocol { |
| |
| namespace { |
| |
| // Ensure ICE config is correct at least one hour after session starts. |
| constexpr base::TimeDelta kMinimumIceConfigLifetime = |
| base::TimeDelta::FromHours(1); |
| |
| } // namespace |
| |
| #if !defined(OS_NACL) |
| // static |
| scoped_refptr<TransportContext> TransportContext::ForTests(TransportRole role) { |
| jingle_glue::JingleThreadWrapper::EnsureForCurrentMessageLoop(); |
| return new protocol::TransportContext( |
| nullptr, std::make_unique<protocol::ChromiumPortAllocatorFactory>(), |
| nullptr, |
| protocol::NetworkSettings( |
| protocol::NetworkSettings::NAT_TRAVERSAL_OUTGOING), |
| role); |
| } |
| #endif // !defined(OS_NACL) |
| |
| TransportContext::TransportContext( |
| SignalStrategy* signal_strategy, |
| std::unique_ptr<PortAllocatorFactory> port_allocator_factory, |
| std::unique_ptr<UrlRequestFactory> url_request_factory, |
| const NetworkSettings& network_settings, |
| TransportRole role) |
| : signal_strategy_(signal_strategy), |
| port_allocator_factory_(std::move(port_allocator_factory)), |
| url_request_factory_(std::move(url_request_factory)), |
| network_settings_(network_settings), |
| role_(role) {} |
| |
| TransportContext::~TransportContext() = default; |
| |
| void TransportContext::Prepare() { |
| EnsureFreshIceConfig(); |
| } |
| |
| void TransportContext::GetIceConfig(const GetIceConfigCallback& callback) { |
| EnsureFreshIceConfig(); |
| |
| // If there is a pending |ice_config_request_| for the current |relay_mode_| |
| // then delay the callback until the request is finished. |
| if (ice_config_request_[relay_mode_]) { |
| pending_ice_config_callbacks_[relay_mode_].push_back(callback); |
| } else { |
| callback.Run(ice_config_[relay_mode_]); |
| } |
| } |
| |
| void TransportContext::EnsureFreshIceConfig() { |
| // Check if request is already pending. |
| if (ice_config_request_[relay_mode_]) |
| return; |
| |
| // Don't need to make jingleinfo request if both STUN and Relay are disabled. |
| if ((network_settings_.flags & (NetworkSettings::NAT_TRAVERSAL_STUN | |
| NetworkSettings::NAT_TRAVERSAL_RELAY)) == 0) { |
| return; |
| } |
| |
| if (ice_config_[relay_mode_].is_null() || |
| base::Time::Now() + kMinimumIceConfigLifetime > |
| ice_config_[relay_mode_].expiration_time) { |
| std::unique_ptr<IceConfigRequest> request; |
| switch (relay_mode_) { |
| case RelayMode::TURN: |
| if (ice_config_url_.empty()) { |
| LOG(WARNING) << "ice_config_url isn't set."; |
| return; |
| } |
| request.reset(new HttpIceConfigRequest( |
| url_request_factory_.get(), ice_config_url_, oauth_token_getter_)); |
| break; |
| case RelayMode::GTURN: |
| request.reset(new JingleInfoRequest(signal_strategy_)); |
| break; |
| } |
| ice_config_request_[relay_mode_] = std::move(request); |
| ice_config_request_[relay_mode_]->Send(base::Bind( |
| &TransportContext::OnIceConfig, base::Unretained(this), relay_mode_)); |
| } |
| } |
| |
| void TransportContext::OnIceConfig(RelayMode relay_mode, |
| const IceConfig& ice_config) { |
| ice_config_[relay_mode] = ice_config; |
| ice_config_request_[relay_mode].reset(); |
| |
| auto& callback_list = pending_ice_config_callbacks_[relay_mode]; |
| while (!callback_list.empty()) { |
| callback_list.begin()->Run(ice_config); |
| callback_list.pop_front(); |
| } |
| } |
| |
| int TransportContext::GetTurnMaxRateKbps() const { |
| DCHECK_EQ(relay_mode_, RelayMode::TURN); |
| return ice_config_[RelayMode::TURN].max_bitrate_kbps; |
| } |
| |
| } // namespace protocol |
| } // namespace remoting |