Question

我无法收到自己发送的多播数据包。我创建了两个Udpclient接收器，用于接收组播组上的数据包，发送方是发送数据包。我的数据包被发送到该组，但我无法收到我发送的数据包....

public void Join()
    {           
            IPAddress ip1 = IPAddress.Any;
            localep = new IPEndPoint(ip1, port);

            Receiver = new UdpClient();
            Receiver.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
            Receiver.Client.Bind(localep);

            Sender = new UdpClient();
            Sender.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
            Sender.Client.Bind(localep);

            IPAddress ip = IPAddress.Parse(IP);
            remoteep = new IPEndPoint(ip, port);


            Sender.JoinMulticastGroup(ip);
            Sender.EnableBroadcast = true;
            Sender.MulticastLoopback = true;

            Receiver.JoinMulticastGroup(ip);
            Receiver.EnableBroadcast = true;
            Receiver.MulticastLoopback = true;

            udpState.ipEndpt = RemoteIpEndPoint;
            udpState.udpClient = Receiver;

            Receiver.BeginReceive(new AsyncCallback(GetMsg), udpState);             

    }   



void GetMsg(IAsyncResult ar)
{


UdpClient udpClient = (UdpClient)((UdpState)(ar.AsyncState)).udpClient;
            IPEndPoint ipEndpt = (IPEndPoint)((UdpState)(ar.AsyncState)).ipEndpt;
            RecByte = Receiver.EndReceive(ar, ref ipEndpt);
}
//Sending packets logic

McastOTS.Sender.Send(sendBytes, sendBytes.Length, McastOTS.remoteep);

Answer 1

在我看来，你需要做的就是在EndReceive之后再次调用BeginReceive。否则，您将只收到1条消息，并且不会看到任何其他消息......

void GetMsg(IAsyncResult ar)
{
   UdpClient udpClient = (UdpClient)((UdpState)(ar.AsyncState)).udpClient;
   IPEndPoint ipEndpt = (IPEndPoint)((UdpState)(ar.AsyncState)).ipEndpt;
   RecByte = Receiver.EndReceive(ar, ref ipEndpt);
   Receiver.BeginReceive(GetMsg, udpState);
}

我无法接收自己的Mcast数据包C＃UdpClient

1 个答案: