异步socket出现问题了！！

[a451618645]

代码过程如下：

public struct udpSource
        {
            public EndPoint ep;
            public Socket workingSock;
            public byte[] data;
        }
public void socketInit()
        {
          Socket privateUdpSock = new Socket(AddressFamily.InterNetwork,SocketType.Dgram,ProtocolType.Udp);
                IPEndPoint IPE2 = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 60000);
                udpSource us2 = new udpSource();
                privateUdpSock.Bind(IPE2);
                us2.ep = (EndPoint)IPE2;
                us2.workingSock = privateUdpSock;
                us2.data = new byte[5000];
                privateUdpSock.BeginReceiveFrom(us2.data, 0, 4, SocketFlags.None, ref us2.ep, new AsyncCallback(privateCallBack), us2);
        }
 public void privateCallBack(IAsyncResult ar)
        {
            udpSource us2 = (udpSource)ar.AsyncState;
            Socket sock = us2.workingSock;
            IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
            EndPoint tempRemoteEP = (EndPoint)sender;
            int i = sock.EndReceiveFrom(ar, ref tempRemoteEP);//接收客户端第一个sendto
            int m = sock.ReceiveFrom(us2.data, ref tempRemoteEP);//接收客户端第二个sendto
            int j = sock.ReceiveFrom(us2.data, ref tempRemoteEP);//接收客户端第三个sendto
            int k = sock.ReceiveFrom(us2.data, ref tempRemoteEP);//接收客户端第四个sendto,
            
            sock.BeginReceiveFrom(us2.data, 0, 4, SocketFlags.None, ref tempRemoteEP, new AsyncCallback(privateCallBack), us2);
}

是这样的，服务器端在Form_Load里面运行socketInit()；之后客户端连续调用4次sendto，服务器端第一次能成功收到数据。但是客户端第二次调用4个sendto的时候，服务器端在int i = sock.EndReceiveFrom(ar, ref tempRemoteEP）停止，说远程主机强迫关闭了一个现有连接。按我的理解，就算客户端关闭了socket，服务器端也应该在sock.EndReceiveFrom(ar, ref tempRemoteEP）处阻塞，不应该出错啊。这是为什么呢

[a451618645]

误会，问题已经解决！！

[feiyun0112]

恭喜！接分

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[a451618645]

呦，呦呦，看你这么热情那就给你了。