130 lines
3.9 KiB
C++
130 lines
3.9 KiB
C++
/*
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* Copyright 2004 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 "webrtc/base/asyncudpsocket.h"
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#include "webrtc/base/logging.h"
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namespace rtc {
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static const int BUF_SIZE = 64 * 1024;
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AsyncUDPSocket* AsyncUDPSocket::Create(
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AsyncSocket* socket,
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const SocketAddress& bind_address) {
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std::unique_ptr<AsyncSocket> owned_socket(socket);
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if (socket->Bind(bind_address) < 0) {
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LOG(LS_ERROR) << "Bind() failed with error " << socket->GetError();
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return NULL;
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}
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return new AsyncUDPSocket(owned_socket.release());
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}
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AsyncUDPSocket* AsyncUDPSocket::Create(SocketFactory* factory,
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const SocketAddress& bind_address) {
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AsyncSocket* socket =
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factory->CreateAsyncSocket(bind_address.family(), SOCK_DGRAM);
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if (!socket)
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return NULL;
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return Create(socket, bind_address);
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}
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AsyncUDPSocket::AsyncUDPSocket(AsyncSocket* socket)
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: socket_(socket) {
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size_ = BUF_SIZE;
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buf_ = new char[size_];
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// The socket should start out readable but not writable.
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socket_->SignalReadEvent.connect(this, &AsyncUDPSocket::OnReadEvent);
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socket_->SignalWriteEvent.connect(this, &AsyncUDPSocket::OnWriteEvent);
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}
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AsyncUDPSocket::~AsyncUDPSocket() {
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delete [] buf_;
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}
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SocketAddress AsyncUDPSocket::GetLocalAddress() const {
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return socket_->GetLocalAddress();
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}
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SocketAddress AsyncUDPSocket::GetRemoteAddress() const {
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return socket_->GetRemoteAddress();
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}
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int AsyncUDPSocket::Send(const void *pv, size_t cb,
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const rtc::PacketOptions& options) {
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rtc::SentPacket sent_packet(options.packet_id, rtc::TimeMillis());
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int ret = socket_->Send(pv, cb);
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SignalSentPacket(this, sent_packet);
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return ret;
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}
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int AsyncUDPSocket::SendTo(const void *pv, size_t cb,
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const SocketAddress& addr,
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const rtc::PacketOptions& options) {
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rtc::SentPacket sent_packet(options.packet_id, rtc::TimeMillis());
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int ret = socket_->SendTo(pv, cb, addr);
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SignalSentPacket(this, sent_packet);
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return ret;
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}
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int AsyncUDPSocket::Close() {
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return socket_->Close();
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}
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AsyncUDPSocket::State AsyncUDPSocket::GetState() const {
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return STATE_BOUND;
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}
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int AsyncUDPSocket::GetOption(Socket::Option opt, int* value) {
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return socket_->GetOption(opt, value);
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}
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int AsyncUDPSocket::SetOption(Socket::Option opt, int value) {
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return socket_->SetOption(opt, value);
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}
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int AsyncUDPSocket::GetError() const {
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return socket_->GetError();
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}
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void AsyncUDPSocket::SetError(int error) {
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return socket_->SetError(error);
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}
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void AsyncUDPSocket::OnReadEvent(AsyncSocket* socket) {
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ASSERT(socket_.get() == socket);
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SocketAddress remote_addr;
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int64_t timestamp;
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int len = socket_->RecvFrom(buf_, size_, &remote_addr, ×tamp);
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if (len < 0) {
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// An error here typically means we got an ICMP error in response to our
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// send datagram, indicating the remote address was unreachable.
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// When doing ICE, this kind of thing will often happen.
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// TODO: Do something better like forwarding the error to the user.
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SocketAddress local_addr = socket_->GetLocalAddress();
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LOG(LS_INFO) << "AsyncUDPSocket[" << local_addr.ToSensitiveString() << "] "
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<< "receive failed with error " << socket_->GetError();
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return;
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}
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// TODO: Make sure that we got all of the packet.
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// If we did not, then we should resize our buffer to be large enough.
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SignalReadPacket(
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this, buf_, static_cast<size_t>(len), remote_addr,
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(timestamp > -1 ? PacketTime(timestamp, 0) : CreatePacketTime(0)));
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}
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void AsyncUDPSocket::OnWriteEvent(AsyncSocket* socket) {
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SignalReadyToSend(this);
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}
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} // namespace rtc
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