Socket programming

[sanda199]

hi everyone, i just wanna know how to connect 2 computers with socket programming in c language. Both of computers are using ubuntu OS. thanks

[SuperCamel]

Google for 'POSIX socket API'.

[sanda199]

I know how to connect client and server in one computer which is running ubuntu OS. But I dun know how to connect in different computer. Pls help me... Thanks :)

[bird1500]

The best tutorial I found online is this one (http://beej.us/guide/bgnet/).
It teaches the latest IPv6 standard (with all the bells and whistles, including sockets) and it's slightly funny, which is good.

Other resources I found are typically either too small or too professorial and bloated, or outdated.

EDIT: to connect 2 different computers you need to know the other computer's IP and use it to create a socket to connect to it.

[sanda199]

But there is router between 2 computers. So IP address of both computers will be the same right?

[bird1500]

I don't know, but I suspect that from the perspective of your computer the other one will have 2 IP addresses, the local one (typically 192.x.x.x or other ones alike) and the public one, which is the one which all internet websites detect (http://whatismyipaddress.com/) when you visit them.

All I know is that the IP/http/dns/router/IP mask/whatever stacks are incredibly complex and you have to read entire books to clearly get the whole picture.

[dwhitney67]

http://beej.us/guide/bgnet/output/html/singlepage/bgnet.html

[lisati]

Threads merged. Please do not start multiple threads for the same question, it dilutes the community's ability to help.