datagramconnection.cpp

linux下的异步通信库 支持TCP和UDP异步通信 编译和使用前先读readme.

/*
 *  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 2 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 Library General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
 
// DatagramConnection.cpp - Copyright (C) 2002, Simon Brenner

#include "async.h"

DatagramConnection::DatagramConnection(): 
	SocketConnection()
{}

DatagramConnection::DatagramConnection(int nfd):
	SocketConnection(nfd)
{}

DatagramConnection::DatagramConnection(char *srvaddr, int srvport):
	SocketConnection(srvaddr, srvport)
{}

int DatagramConnection::Connect(const IPSocketAddress &address)
{
	fd=MakeSocket(SOCK_DGRAM);
	sockaddr_in addr;
	if (fd > 0)
	{
		if (connect(fd, address.fill_sockaddr(&addr), address.sockaddr_len())<0)
		{
			Disconnect();
			return false;
		}
		else
		{
			AddSocket(fd, this);
			return true;
		}
	}
	else
		return false;
}

int DatagramConnection::Bind(int port)
{
	return SocketConnection::Bind(port, SOCK_DGRAM);
}

bool DatagramConnection::Send(const IPSocketAddress &addr, const void *data, uint len)
{
	sockaddr_in saddr;
	return (sendto(fd, data, len, 0, addr.fill_sockaddr(&saddr), addr.sockaddr_len())==len);
}