Question

My computer is configured to automatically obtain IP address. When I use ipconfig /all, it shows something like below:

Windows IP Configuration

PPP adapter Broadband Connection:

Connection-specific DNS Suffix . :
IPv4 Address. . . . . . . . . . . : 95.38.95.204
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 0.0.0.0

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::64d7:e4ee:ba7e:1ede
IPv4 Address. . . . . . . . . . . : 192.168.72.198
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1

Should I use 95.38.95.204 or 192.168.72.198 as IP address for server and client?

When I used 192.168.72.198, server connected successfully but client threw an SocketException like below

 var tcpServer = new TcpClient();
 tcpServer.Connect(new IpAddress("192.168.72.198"), 1986);

A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.72.198:1986

I used this articles on geekpedia at http://www.geekpedia.com/tutorial239_Csharp-Chat-Part-1—Building-the-Chat-Client.html

Thanks if anybody can help me.

Answer 1

If you are testing it on your own computer you can use 127.0.0.1 or "localhost".

You should use the IPv4 address generally (192.168.72.198).

It sounds like you don’t have your server already running on that socket.