ibrcommon/ibrcommon/net/BroadcastSocket.cpp

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/*
 * BroadcastSocket.cpp
 *
 *  Created on: 28.06.2010
 *      Author: morgenro
 */

#include "ibrcommon/net/BroadcastSocket.h"
#include "ibrcommon/net/NetAddress.h"

namespace ibrcommon
{
        BroadcastSocket::BroadcastSocket()
         : udpsocket(IPPROTO_UDP)
        {
                int b = 1;
                if ( ::setsockopt(_socket, SOL_SOCKET, SO_BROADCAST, (char*)&b, sizeof(b)) == -1 )
                {
                        throw SocketException("BroadcastSocket: cannot send broadcasts");
                }

                // broadcast addresses should be usable more than once.
                setsockopt(_socket, SOL_SOCKET, SO_REUSEADDR, (char*)&b, sizeof(b));
        }

        BroadcastSocket::~BroadcastSocket()
        {
        }

        void BroadcastSocket::bind(int port, const NetInterface &iface)
        {
                bind(port, iface.getBroadcast(NetAddress::NETADDR_IP).toString());
        }

        void BroadcastSocket::bind(int port, std::string address)
        {
                // set listen port
                _sockaddr.sin_port = htons(port);

                // convert given address
                if (address.length() > 0)
                {
                        if (inet_pton(AF_INET, address.c_str(), &_sockaddr.sin_addr) <= 0)
                        {
                                throw SocketException("BroadcastSocket: can not parse address " + address);
                        }
                }

                if ( ::bind(_socket, (struct sockaddr *) &_sockaddr, sizeof(_sockaddr)) < 0 )
                {
                        throw SocketException("BroadcastSocket: cannot bind socket");
                }
        }
}