Example #1
0
        //
        // Only for use by UdpConnector.
        //
        internal UdpTransceiver(TransportInstance instance, EndPoint addr, IPAddress?sourceAddr, string mcastInterface,
                                int mcastTtl)
        {
            _instance = instance;
            _addr     = addr;
            if (sourceAddr != null)
            {
                _sourceAddr = new IPEndPoint(sourceAddr, 0);
            }

            _readEventArgs = new SocketAsyncEventArgs();
            _readEventArgs.RemoteEndPoint = _addr;
            _readEventArgs.Completed     += new EventHandler <SocketAsyncEventArgs>(IoCompleted);

            _writeEventArgs = new SocketAsyncEventArgs();
            _writeEventArgs.RemoteEndPoint = _addr;
            _writeEventArgs.Completed     += new EventHandler <SocketAsyncEventArgs>(IoCompleted);

            _mcastInterface = mcastInterface;
            _state          = StateNeedConnect;
            _incoming       = false;

            try
            {
                _fd = Network.CreateSocket(true, _addr.AddressFamily);
                SetBufSize(-1, -1);
                Network.SetBlock(_fd, false);
                if (Network.IsMulticast((IPEndPoint)_addr))
                {
                    if (_mcastInterface.Length > 0)
                    {
                        Network.SetMcastInterface(_fd, _mcastInterface, _addr.AddressFamily);
                    }
                    if (mcastTtl != -1)
                    {
                        Network.SetMcastTtl(_fd, mcastTtl, _addr.AddressFamily);
                    }
                }
            }
            catch (System.Exception)
            {
                _fd = null;
                throw;
            }
        }