Question

c#如何在局域网中实现点对点的通信，最好给出连接服务器的代码，因为我一连接就报错！

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Answer 1

Socket listenSocket = new Socket(AddressFamily.InterNetwork,
SocketType.Stream,
ProtocolType.Tcp);

// bind the listening socket to the port
IPAddress hostIP = (Dns.Resolve(IPAddress.Any.ToString())).AddressList[0];
IPEndPoint ep = new IPEndPoint(hostIP, port);
listenSocket.Bind(ep);

// start listening
listenSocket.Listen(backlog);

public static void SendTo1()
{
IPHostEntry hostEntry = Dns.GetHostEntry(Dns.GetHostName());
IPEndPoint endPoint = new IPEndPoint(hostEntry.AddressList[0], 11000);

Socket s = new Socket(endPoint.Address.AddressFamily,
SocketType.Dgram,
ProtocolType.TCP);

byte[] msg = Encoding.ASCII.GetBytes("This is a test");
Console.WriteLine("Sending data.");
// This call blocks.
s.SendTo(msg, endPoint);
s.Close();
}

具体多看MSDN ，https://msdn.microsoft.com/zh-cn/library/System.Net.Sockets.Socket(v=vs.110).aspx}