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/*
* Connection.h
*
* Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MAD_NET_CONNECTION_H_
#define MAD_NET_CONNECTION_H_
#include <config.h>
#include "Packet.h"
#include <boost/asio.hpp>
#include <boost/asio/ssl.hpp>
#include <boost/signal.hpp>
#include <boost/thread/shared_mutex.hpp>
namespace Mad {
namespace Net {
class Listener;
class ThreadManager;
class Connection : boost::noncopyable {
protected:
friend class Listener;
friend class ThreadManager;
enum State {
DISCONNECTED, CONNECT, CONNECTED, DISCONNECT
};
private:
class Buffer {
public:
Buffer(const uint8_t *data0, std::size_t length) : data(new std::vector<uint8_t>(data0, data0+length)), buffer(boost::asio::buffer(*data)) {}
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<uint8_t> > data;
boost::asio::const_buffer buffer;
};
boost::condition_variable_any stateChanged;
State state;
std::vector<boost::uint8_t> receiveBuffer;
std::size_t received;
Packet::Data header;
boost::signal1<void, const Packet&> receiveSignal;
boost::signal0<void> connectedSignal;
boost::signal0<void> disconnectedSignal;
bool receiving;
unsigned long sending;
void enterReceiveLoop();
void handleHeaderReceive(const std::vector<boost::uint8_t> &data);
void handleDataReceive(const std::vector<boost::uint8_t> &data);
void handleRead(const boost::system::error_code& error, std::size_t bytes_transferred, std::size_t length, const boost::function1<void, const std::vector<boost::uint8_t>& > ¬ify);
void handleWrite(const boost::system::error_code& error, std::size_t);
void handleShutdown(const boost::system::error_code& error);
void rawReceive(std::size_t length, const boost::function1<void, const std::vector<boost::uint8_t>& > ¬ify);
void rawSend(const uint8_t *data, std::size_t length);
protected:
static boost::asio::io_service ioService;
boost::shared_mutex connectionLock;
boost::asio::ssl::stream<boost::asio::ip::tcp::socket> socket;
boost::asio::ip::tcp::endpoint peer;
void handleHandshake(const boost::system::error_code& error);
bool _isConnected() const {return (state != DISCONNECTED);}
bool _isConnecting() const {
return (state == CONNECT);
}
bool _isDisconnecting() const {
return (state == DISCONNECT);
}
void _setState(State newState) {
state = newState;
stateChanged.notify_all();
}
void doDisconnect();
Connection(boost::asio::ssl::context &sslContext) :
state(DISCONNECTED), receiveBuffer(1024*1024), socket(ioService, sslContext) {}
public:
virtual ~Connection();
bool isConnected() {
boost::shared_lock<boost::shared_mutex> lock(connectionLock);
return _isConnected();
}
bool isConnecting() {
boost::shared_lock<boost::shared_mutex> lock(connectionLock);
return _isConnecting();
}
bool isDisconnecting() {
boost::shared_lock<boost::shared_mutex> lock(connectionLock);
return _isDisconnecting();
}
void waitWhileConnecting() {
boost::shared_lock<boost::shared_mutex> lock(connectionLock);
while(_isConnecting())
stateChanged.wait(lock);
}
void waitWhileConnected() {
boost::shared_lock<boost::shared_mutex> lock(connectionLock);
while(_isConnected())
stateChanged.wait(lock);
}
/*const gnutls_datum_t* getCertificate() const {
// TODO Thread-safeness
return gnutls_certificate_get_ours(session);
}
const gnutls_datum_t* getPeerCertificate() const {
// TODO Thread-safeness
unsigned int n;
return gnutls_certificate_get_peers(session, &n);
}*/
boost::asio::ip::tcp::endpoint getPeer() {
boost::shared_lock<boost::shared_mutex> lock(connectionLock);
return peer;
}
void disconnect();
bool send(const Packet &packet);
boost::signal1<void, const Packet&>& signalReceive() {return receiveSignal;}
boost::signal0<void>& signalConnected() {return connectedSignal;}
boost::signal0<void>& signalDisconnected() {return disconnectedSignal;}
};
}
}
#endif /*MAD_NET_CONNECTION_H_*/
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