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/*
* Copyright (c) 2012 Yoann Blein
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
#include <Swiften/Network/BoostUDPSocket.h>
#include <Swiften/Base/Log.h>
#include <Swiften/Base/Algorithm.h>
#include <Swiften/EventLoop/EventLoop.h>
#include <Swiften/Base/ByteArray.h>
#include <Swiften/Network/HostAddressPort.h>
#include <Swiften/Base/SafeAllocator.h>
#include <boost/bind.hpp>
#include <boost/asio/placeholders.hpp>
namespace Swift {
static const size_t BUFFER_SIZE = 4096;
// -----------------------------------------------------------------------------
// A reference-counted non-modifiable buffer class.
class SharedBuffer {
public:
SharedBuffer(const SafeByteArray& data) :
data_(new std::vector<char, SafeAllocator<char> >(data.begin(), data.end())),
buffer_(boost::asio::buffer(*data_)) {
}
// ConstBufferSequence requirements.
typedef boost::asio::const_buffer value_type;
typedef const boost::asio::const_buffer* const_iterator;
const boost::asio::const_buffer* begin() const { return &buffer_; }
const boost::asio::const_buffer* end() const { return &buffer_ + 1; }
private:
boost::shared_ptr< std::vector<char, SafeAllocator<char> > > data_;
boost::asio::const_buffer buffer_;
};
// -----------------------------------------------------------------------------
BoostUDPSocket::BoostUDPSocket(boost::shared_ptr<boost::asio::io_service> ioService, EventLoop* eventLoop) :
eventLoop(eventLoop), ioService(ioService), socket_(*ioService), sending_(false)
{
}
BoostUDPSocket::~BoostUDPSocket()
{
}
void BoostUDPSocket::bind(int port)
{
if (!socket_.is_open())
socket_.open(boost::asio::ip::udp::v4());
socket_.bind(boost::asio::ip::udp::endpoint(boost::asio::ip::udp::v4(), port));
}
void BoostUDPSocket::listen()
{
if (!socket_.is_open())
socket_.open(boost::asio::ip::udp::v4());
doRead();
}
void BoostUDPSocket::connect(const HostAddressPort &address)
{
if (!socket_.is_open())
socket_.open(boost::asio::ip::udp::v4());
socket_.connect(address.toEndpoint()); // TODO: handle errors
eventLoop->postEvent(boost::bind(boost::ref(onConnected)), shared_from_this());
}
void BoostUDPSocket::connectToFirstIncoming()
{
boost::shared_ptr<SafeByteArray> buf = boost::make_shared<SafeByteArray>(1);
socket_.async_receive_from(
boost::asio::buffer(*buf),
remoteEndpoint_,
boost::bind(&BoostUDPSocket::handleFirstRead, shared_from_this(), boost::asio::placeholders::error));
}
void BoostUDPSocket::close() {
boost::system::error_code errorCode;
socket_.shutdown(boost::asio::ip::udp::socket::shutdown_send, errorCode);
socket_.close();
}
void BoostUDPSocket::send(const SafeByteArray& data)
{
boost::lock_guard<boost::mutex> lock(sendMutex_);
if (!sending_) {
sending_ = true;
doSend(data);
} else {
append(sendQueue_, data);
}
}
void BoostUDPSocket::doSend(const SafeByteArray& data)
{
socket_.async_send(SharedBuffer(data), boost::bind(&BoostUDPSocket::handleDataWritten, shared_from_this(), boost::asio::placeholders::error));
}
void BoostUDPSocket::doRead()
{
readBuffer_ = boost::make_shared<SafeByteArray>(BUFFER_SIZE);
socket_.async_receive(
boost::asio::buffer(*readBuffer_),
boost::bind(&BoostUDPSocket::handleSocketRead, shared_from_this(), boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred));
}
void BoostUDPSocket::handleSocketRead(const boost::system::error_code& error, size_t bytesTransferred)
{
SWIFT_LOG(debug) << "Socket read " << error << std::endl;
if (!error) {
readBuffer_->resize(bytesTransferred);
eventLoop->postEvent(boost::bind(boost::ref(onDataRead), readBuffer_), shared_from_this());
doRead();
}
// else if (/*error == boost::asio::error::eof ||*/ error == boost::asio::error::operation_aborted) {
// eventLoop->postEvent(boost::bind(boost::ref(onDisconnected), boost::optional<Error>()), shared_from_this());
// }
// else {
// eventLoop->postEvent(boost::bind(boost::ref(onDisconnected), ReadError), shared_from_this());
// }
}
void BoostUDPSocket::handleFirstRead(const boost::system::error_code &error)
{
if (!error) {
socket_.connect(remoteEndpoint_); // TODO: handle errors
eventLoop->postEvent(boost::bind(boost::ref(onConnected)), shared_from_this());
}
}
void BoostUDPSocket::handleDataWritten(const boost::system::error_code& error)
{
SWIFT_LOG(debug) << "Data written " << error << std::endl;
// if (!error) {
// eventLoop->postEvent(boost::ref(onDataWritten), shared_from_this());
// }
// else if (/*error == boost::asio::error::eof || */error == boost::asio::error::operation_aborted) {
// eventLoop->postEvent(boost::bind(boost::ref(onDisconnected), boost::optional<Error>()), shared_from_this());
// }
// else {
// eventLoop->postEvent(boost::bind(boost::ref(onDisconnected), WriteError), shared_from_this());
// }
boost::lock_guard<boost::mutex> lock(sendMutex_);
if (sendQueue_.empty()) {
sending_ = false;
} else {
doSend(sendQueue_);
sendQueue_.clear();
}
}
}
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Swift