c# - 传递给套接字监听器的参数无效

Question

我一直不断收到此错误，我相信我已将我的问题缩小为我是 using a 32-bit 64 位机器上的监听器。有什么方法可以让它在 64 位系统上运行吗？

18      Socket sListener;
...
34          permission = new SocketPermission(NetworkAccess.Accept, TransportType.Tcp, "", SocketPermission.AllPorts);

36          //Listening Socket object
37          sListener = null;

39          //Ensure the code has permission to access the Socket
40          permission.Demand();

42          IPHostEntry ipHost = Dns.GetHostEntry("");
43          IPAddress ipAddress = ipHost.AddressList[2];
44          ipEndPoint = new IPEndPoint(ipAddress, 4510);

46          sListener = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
...
71      sListener.Listen(10);
72
73      //Begins an asynchronous operation to accept an attempt
74      AsyncCallback aCallback = new AsyncCallback(AcceptCallback);
75      sListener.BeginAccept(aCallback, sListener);

我试着按照这个 relevant 中的代码问题，但它给了我错误:

Operator '==' cannot be applied to operands of type 'System.Net.Sockets.AddressFamily' and 'string'

Answer 1

我想你错过了 Socket Binding , 在 Socket 可以之前 Listen在港口。

根据 MSDN:

Use the Bind method if you need to use a specific local endpoint. You must call Bind before you can call the Listen method. You do not need to call Bind before using the Connect method unless you need to use a specific local endpoint. You can use the Bind method on both connectionless and connection-oriented protocols.

Before calling Bind, you must first create the local IPEndPoint from which you intend to communicate data. If you do not care which local address is assigned, you can create an IPEndPoint using IPAddress.Any as the address parameter, and the underlying service provider will assign the most appropriate network address. This might help simplify your application if you have multiple network interfaces. If you do not care which local port is used, you can create an IPEndPoint using 0 for the port number. In this case, the service provider will assign an available port number between 1024 and 5000.

70:    sListen.Bind(your IP end point)
71:    sListener.Listen(10);

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附言: 始终使用大于 4000 的值作为监听端口!