Member Avatar for moni94

Hi. I made a program for tcp chat but I'm really confused with which IP to use. I can send a message to myself by sending a message to a local IP such as 127.0.0.1 or 192.168.1.100. When I tried with my external IP (the one from whatsmyip.com) I get a socket exception: The requested address is not valid in its context. In order to chat to a friend what IP does he have to give me, and if it's the external how do I get the program to work?

Edited by moni94 because: n/a
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Member Avatar for Mattan360

Is your buddy behind a router??

Member Avatar for moni94

Is your buddy behind a router??

Well he isn't, but the program is supposed to work dependless of whether the person I'm connecting to is behind a router or not.

Member Avatar for SanjitVigneshS

I think you have to give the ip your server is running on to your friend. Or if he is the one running the server, then you have to use his ip to connect to that server. Hope this helps.

By the way, you can also refer to source code for chat applications at sourceforge.

Edited by SanjitVigneshS because: n/a
Member Avatar for moni94

I think you have to give the ip your server is running on to your friend. Or if he is the one running the server, then you have to use his ip to connect to that server. Hope this helps.

By the way, you can also refer to source code for chat applications at sourceforge.

Yes I know, but which ip are you talking about? The external?

Member Avatar for SanjitVigneshS

Just try using the external ip.

Member Avatar for Mattan360

On the router try to Port Forward the port of your chat to the computer on the other side using it's internal IP.

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