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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "talk/base/asyncudpsocket.h"
#include "talk/base/logging.h"
namespace talk_base {
static const int BUF_SIZE = 64 * 1024;
AsyncUDPSocket* AsyncUDPSocket::Create(
AsyncSocket* socket,
const SocketAddress& bind_address) {
scoped_ptr<AsyncSocket> owned_socket(socket);
if (socket->Bind(bind_address) < 0) {
LOG(LS_ERROR) << "Bind() failed with error " << socket->GetError();
return NULL;
}
return new AsyncUDPSocket(owned_socket.release());
}
AsyncUDPSocket* AsyncUDPSocket::Create(SocketFactory* factory,
const SocketAddress& bind_address) {
AsyncSocket* socket =
factory->CreateAsyncSocket(bind_address.family(), SOCK_DGRAM);
if (!socket)
return NULL;
return Create(socket, bind_address);
}
AsyncUDPSocket::AsyncUDPSocket(AsyncSocket* socket)
: socket_(socket) {
ASSERT(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();
}
// TODO(mallinath) - Add support of setting DSCP code on AsyncSocket.
int AsyncUDPSocket::Send(const void *pv, size_t cb, DiffServCodePoint dscp) {
return socket_->Send(pv, cb);
}
// TODO(mallinath) - Add support of setting DSCP code on AsyncSocket.
int AsyncUDPSocket::SendTo(const void *pv, size_t cb,
const SocketAddress& addr, DiffServCodePoint dscp) {
return socket_->SendTo(pv, cb, addr);
}
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(AsyncSocket* socket) {
ASSERT(socket_.get() == socket);
SocketAddress remote_addr;
int len = socket_->RecvFrom(buf_, size_, &remote_addr);
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();
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,
CreatePacketTime(0));
}
void AsyncUDPSocket::OnWriteEvent(AsyncSocket* socket) {
SignalReadyToSend(this);
}
} // namespace talk_base
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