942bc2e4b9
|packet_overhead| field is added to rtc::NetworkRoute structure. In PackTransportInternal: 1. network_route() is added which returns the current network route. 2. debug_name() is removed. 3. transport_name() is moved from DtlsTransportInternal and IceTransportInternal to PacketTransportInternal. When the selected candidate pair is changed, the P2PTransportChannel will fire the SignalNetworkRouteChanged instead of SignalSelectedCandidatePairChanged to upper layers. The Rtp/SrtpTransport takes the responsibility of calculating the transport overhead from the BaseChannel so that the BaseChannel doesn't need to depend on P2P layer transports. TBR=pthatcher@webrtc.org Bug: webrtc:7013 Change-Id: If9928b25a7259544c2d9c42048b53ab24292fc67 Reviewed-on: https://webrtc-review.googlesource.com/22767 Reviewed-by: Zhi Huang <zhihuang@webrtc.org> Commit-Queue: Zhi Huang <zhihuang@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20664}
134 lines
4.1 KiB
C++
134 lines
4.1 KiB
C++
/*
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* Copyright 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "p2p/base/udptransport.h"
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#include <string>
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#include <utility> // For std::move.
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#include "rtc_base/asyncpacketsocket.h"
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#include "rtc_base/asyncudpsocket.h"
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#include "rtc_base/logging.h"
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#include "rtc_base/nethelper.h"
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#include "rtc_base/socketaddress.h"
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#include "rtc_base/thread.h"
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#include "rtc_base/thread_checker.h"
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namespace cricket {
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UdpTransport::UdpTransport(const std::string& transport_name,
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std::unique_ptr<rtc::AsyncPacketSocket> socket)
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: transport_name_(transport_name), socket_(std::move(socket)) {
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RTC_DCHECK(socket_);
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socket_->SignalReadPacket.connect(this, &UdpTransport::OnSocketReadPacket);
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socket_->SignalSentPacket.connect(this, &UdpTransport::OnSocketSentPacket);
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}
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UdpTransport::~UdpTransport() {
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RTC_DCHECK_RUN_ON(&network_thread_checker_);
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}
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rtc::SocketAddress UdpTransport::GetLocalAddress() const {
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RTC_DCHECK_RUN_ON(&network_thread_checker_);
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return socket_->GetLocalAddress();
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}
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bool UdpTransport::SetRemoteAddress(const rtc::SocketAddress& addr) {
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RTC_DCHECK_RUN_ON(&network_thread_checker_);
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if (!addr.IsComplete()) {
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RTC_LOG(LS_WARNING) << "Remote address not complete.";
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return false;
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}
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// TODO(johan): check for ipv4, other settings.
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bool prev_destination_nil = remote_address_.IsNil();
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remote_address_ = addr;
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// Going from "didn't have destination" to "have destination" or vice versa.
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if (prev_destination_nil != remote_address_.IsNil()) {
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SignalWritableState(this);
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if (prev_destination_nil) {
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SignalReadyToSend(this);
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}
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}
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return true;
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}
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rtc::SocketAddress UdpTransport::GetRemoteAddress() const {
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RTC_DCHECK_RUN_ON(&network_thread_checker_);
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return remote_address_;
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}
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const std::string& UdpTransport::transport_name() const {
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return transport_name_;
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}
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bool UdpTransport::receiving() const {
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// TODO(johan): Implement method and signal.
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return true;
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}
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bool UdpTransport::writable() const {
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RTC_DCHECK_RUN_ON(&network_thread_checker_);
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return !remote_address_.IsNil();
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}
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int UdpTransport::SendPacket(const char* data,
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size_t len,
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const rtc::PacketOptions& options,
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int flags) {
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// No thread_checker in high frequency network function.
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if (remote_address_.IsNil()) {
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RTC_LOG(LS_WARNING) << "Remote address not set.";
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send_error_ = ENOTCONN;
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return -1;
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}
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int result =
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socket_->SendTo((const void*)data, len, remote_address_, options);
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if (result <= 0) {
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RTC_LOG(LS_VERBOSE) << "SendPacket() " << result;
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}
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return result;
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}
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rtc::Optional<rtc::NetworkRoute> UdpTransport::network_route() const {
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rtc::NetworkRoute network_route;
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network_route.packet_overhead =
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/*kUdpOverhead=*/8 + GetIpOverhead(GetLocalAddress().family());
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return rtc::Optional<rtc::NetworkRoute>(network_route);
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}
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int UdpTransport::SetOption(rtc::Socket::Option opt, int value) {
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return 0;
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}
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int UdpTransport::GetError() {
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return send_error_;
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}
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rtc::PacketTransportInternal* UdpTransport::GetInternal() {
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return this;
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}
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void UdpTransport::OnSocketReadPacket(rtc::AsyncPacketSocket* socket,
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const char* data,
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size_t len,
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const rtc::SocketAddress& remote_addr,
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const rtc::PacketTime& packet_time) {
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// No thread_checker in high frequency network function.
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SignalReadPacket(this, data, len, packet_time, 0);
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}
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void UdpTransport::OnSocketSentPacket(rtc::AsyncPacketSocket* socket,
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const rtc::SentPacket& packet) {
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RTC_DCHECK_EQ(socket_.get(), socket);
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SignalSentPacket(this, packet);
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}
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} // namespace cricket
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