GetAddrInfo C # hosts do not have such a host

Question

I am trying to establish a server-client connection using sockets in C #. First, I try to establish a connection from the same computer and in the second step from different computers. I came across these posts for and. My question is about connecting to a client. I am trying to execute something like:

 private static void StartClient()
 {
    try
    {
     //IPHostEntry ipHostInfo = Dns.GetHostEntry(Dns.GetHostName());
     IPHostEntry ipHostInfo = Dns.GetHostEntry("127.0.0.1:11000");
     IPAddress ipAddress = ipHostInfo.AddressList[0];
     IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);

     // Create a TCP/IP socket.
     Socket client = new Socket(ipAddress.AddressFamily,
     SocketType.Stream, ProtocolType.Tcp);
     .......
   }

However, I get the message:

NO such host is known in System.NEt.Dns.GetAddrInfo

What is my problem? Port 11000 is the same as what I use from the server. What should I add as hostEntry when I start locally and what when I start the client from another computer?

EDIT: When I change the line Dns.GetHostEntry("127.0.0.1:11000");to Dns.GetHostEntry("127.0.0.1");or Dns.GetHostEntry("serverIp");, I got the same message.

EDIT2: IP- , . ?

Answer 1

IPHostEntry ipHostInfo = Dns.GetHostEntry("127.0.0.1:11000");

Dns.GetHostEntry:

hostNameOrAddress

: System.String

IP- .