141 lines
4.4 KiB
C++
141 lines
4.4 KiB
C++
/*
|
|
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#include "rtc_base/async_udp_socket.h"
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <string>
|
|
|
|
#include "rtc_base/checks.h"
|
|
#include "rtc_base/logging.h"
|
|
#include "rtc_base/network/sent_packet.h"
|
|
#include "rtc_base/third_party/sigslot/sigslot.h"
|
|
#include "rtc_base/time_utils.h"
|
|
|
|
namespace rtc {
|
|
|
|
static const int BUF_SIZE = 64 * 1024;
|
|
|
|
AsyncUDPSocket* AsyncUDPSocket::Create(Socket* socket,
|
|
const SocketAddress& bind_address) {
|
|
std::unique_ptr<Socket> owned_socket(socket);
|
|
if (socket->Bind(bind_address) < 0) {
|
|
RTC_LOG(LS_ERROR) << "Bind() failed with error " << socket->GetError();
|
|
return nullptr;
|
|
}
|
|
return new AsyncUDPSocket(owned_socket.release());
|
|
}
|
|
|
|
AsyncUDPSocket* AsyncUDPSocket::Create(SocketFactory* factory,
|
|
const SocketAddress& bind_address) {
|
|
Socket* socket = factory->CreateSocket(bind_address.family(), SOCK_DGRAM);
|
|
if (!socket)
|
|
return nullptr;
|
|
return Create(socket, bind_address);
|
|
}
|
|
|
|
AsyncUDPSocket::AsyncUDPSocket(Socket* socket) : socket_(socket) {
|
|
size_ = BUF_SIZE;
|
|
buf_ = new char[size_];
|
|
|
|
// The socket should start out readable but not writable.
|
|
socket_->SignalReadEvent.connect(this, &AsyncUDPSocket::OnReadEvent);
|
|
socket_->SignalWriteEvent.connect(this, &AsyncUDPSocket::OnWriteEvent);
|
|
}
|
|
|
|
AsyncUDPSocket::~AsyncUDPSocket() {
|
|
delete[] buf_;
|
|
}
|
|
|
|
SocketAddress AsyncUDPSocket::GetLocalAddress() const {
|
|
return socket_->GetLocalAddress();
|
|
}
|
|
|
|
SocketAddress AsyncUDPSocket::GetRemoteAddress() const {
|
|
return socket_->GetRemoteAddress();
|
|
}
|
|
|
|
int AsyncUDPSocket::Send(const void* pv,
|
|
size_t cb,
|
|
const rtc::PacketOptions& options) {
|
|
rtc::SentPacket sent_packet(options.packet_id, rtc::TimeMillis(),
|
|
options.info_signaled_after_sent);
|
|
CopySocketInformationToPacketInfo(cb, *this, false, &sent_packet.info);
|
|
int ret = socket_->Send(pv, cb);
|
|
SignalSentPacket(this, sent_packet);
|
|
return ret;
|
|
}
|
|
|
|
int AsyncUDPSocket::SendTo(const void* pv,
|
|
size_t cb,
|
|
const SocketAddress& addr,
|
|
const rtc::PacketOptions& options) {
|
|
rtc::SentPacket sent_packet(options.packet_id, rtc::TimeMillis(),
|
|
options.info_signaled_after_sent);
|
|
CopySocketInformationToPacketInfo(cb, *this, true, &sent_packet.info);
|
|
int ret = socket_->SendTo(pv, cb, addr);
|
|
SignalSentPacket(this, sent_packet);
|
|
return ret;
|
|
}
|
|
|
|
int AsyncUDPSocket::Close() {
|
|
return socket_->Close();
|
|
}
|
|
|
|
AsyncUDPSocket::State AsyncUDPSocket::GetState() const {
|
|
return STATE_BOUND;
|
|
}
|
|
|
|
int AsyncUDPSocket::GetOption(Socket::Option opt, int* value) {
|
|
return socket_->GetOption(opt, value);
|
|
}
|
|
|
|
int AsyncUDPSocket::SetOption(Socket::Option opt, int value) {
|
|
return socket_->SetOption(opt, value);
|
|
}
|
|
|
|
int AsyncUDPSocket::GetError() const {
|
|
return socket_->GetError();
|
|
}
|
|
|
|
void AsyncUDPSocket::SetError(int error) {
|
|
return socket_->SetError(error);
|
|
}
|
|
|
|
void AsyncUDPSocket::OnReadEvent(Socket* socket) {
|
|
RTC_DCHECK(socket_.get() == socket);
|
|
|
|
SocketAddress remote_addr;
|
|
int64_t timestamp;
|
|
int len = socket_->RecvFrom(buf_, size_, &remote_addr, ×tamp);
|
|
if (len < 0) {
|
|
// An error here typically means we got an ICMP error in response to our
|
|
// send datagram, indicating the remote address was unreachable.
|
|
// When doing ICE, this kind of thing will often happen.
|
|
// TODO: Do something better like forwarding the error to the user.
|
|
SocketAddress local_addr = socket_->GetLocalAddress();
|
|
RTC_LOG(LS_INFO) << "AsyncUDPSocket[" << local_addr.ToSensitiveString()
|
|
<< "] receive failed with error " << socket_->GetError();
|
|
return;
|
|
}
|
|
|
|
// TODO: Make sure that we got all of the packet.
|
|
// If we did not, then we should resize our buffer to be large enough.
|
|
SignalReadPacket(this, buf_, static_cast<size_t>(len), remote_addr,
|
|
(timestamp > -1 ? timestamp : TimeMicros()));
|
|
}
|
|
|
|
void AsyncUDPSocket::OnWriteEvent(Socket* socket) {
|
|
SignalReadyToSend(this);
|
|
}
|
|
|
|
} // namespace rtc
|