How to make connection between two different networks.

[Ortonas]

Basically, i have my code for connecting server-client on local network, but how do i make them to connect over different networks? I using udp btw.

[ResidentBiscuit]

UDP is connectionless, so they won't connect. Connecting over different networks is just the same as connecting in a LAN. Give it an IP address to connect to and you're set.

[Ortonas]

Okay, so do I get my actual PC's address then? So could somebody else connect.

Atm, I am using

   myIP.b1 =  ((struct in_addr *)(host->h_addr))->S_un.S_un_b.s_b1;
    myIP.b2 = ((struct in_addr *)(host->h_addr))->S_un.S_un_b.s_b2;
    myIP.b3 = ((struct in_addr *)(host->h_addr))->S_un.S_un_b.s_b3;
    myIP.b4 = ((struct in_addr *)(host->h_addr))->S_un.S_un_b.s_b4;

But that obviously wont get me what I want. Its gonna be like 192.168.1.xxx.

One way to get my address is go through google "Whats my ip", but is there another more approprate way to do it?

[kbw]

It's not an application issue, nor a TCP/UDP issue. It's an IP routing/naming issue.

If you're on an internal home network and you want to connect to another computer on a different internal home network ... well, that's the problem.

Don't go off changing your application or protocol. By and large, if an app works on a local machine and is well behaved, it should work anywhere. That's the power of IP.

Well behaved includes:
- using configurable addresses
- using send/recv in loops to send/receive all data in the buffer

http://v2.cplusplus.com/forum/general/63199/#msg342030