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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 <queue>
#include <gnutls/gnutls.h>
#include <sigc++/signal.h>
#include "Packet.h"
namespace Mad {
namespace Net {
class IPAddress;
class Packet;
class Connection {
private:
struct Transmission {
unsigned long length;
unsigned long transmitted;
unsigned char *data;
sigc::slot<void,const void*,unsigned long> notify;
};
Transmission transR;
Packet::Data header;
sigc::signal<void,const Connection*,const Packet&> signal;
void packetHeaderReceiveHandler(const void *data, unsigned long length);
void packetDataReceiveHandler(const void *data, unsigned long length);
void doReceive();
bool receiveComplete() const {
return (transR.length == transR.transmitted);
}
protected:
virtual gnutls_session_t& getSession() = 0;
bool rawReceive(unsigned long length,
const sigc::slot<void,const void*,unsigned long> ¬ify);
bool rawSend(const unsigned char *data, unsigned long length);
bool enterReceiveLoop() {
return rawReceive(sizeof(Packet::Data), sigc::mem_fun(this, &Connection::packetHeaderReceiveHandler));
}
public:
Connection() {
transR.length = transR.transmitted = 0;
}
virtual ~Connection() {}
virtual bool isConnected() const = 0;
virtual const IPAddress* getPeer() const = 0;
virtual bool dataPending() const = 0;
bool send(const Packet &packet) {
return rawSend(reinterpret_cast<const unsigned char*>(packet.getRawData()), packet.getRawDataLength());
}
void sendreceive() {
doReceive();
}
sigc::signal<void,const Connection*,const Packet&> signalReceive() const {return signal;}
static void init() {
gnutls_global_init();
}
static void deinit() {
gnutls_global_deinit();
}
};
}
}
#endif /*MAD_NET_CONNECTION_H_*/
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