Catch a forced exit from terminal (x button on top OR ctrl+Z)

Question

im making a chat in C using TCP connection between client and server. Im running that on linux terminal.

First of all i run the server on one terminal, and then every client on another one. Everything is done except one thing.

I want that the client program will catch a click on the X button on the terminal or closing the program with CTRL+C ,and before the process die send a message to the server.

There is a way to do such thing?

Thank you, Dudu.

Ctrl-Z on Linux is for *suspending* a process, not terminating it. Did you mean Ctrl-C? — Oliver Charlesworth, Jun 14 '13 at 15:46
possible duplicate of [Override Ctrl-C](http://stackoverflow.com/questions/7623401/override-ctrl-c) — Oliver Charlesworth, Jun 14 '13 at 15:51

score 0 · Answer 1 · answered Jun 14 '13 at 15:48

0

What you're looking for is to intercept a System Signal.

http://en.wikipedia.org/wiki/C_signal_handling

answered Jun 14 '13 at 15:48

damian

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And which signal do i have to catch for CTRL+C and X button? – dudu shushan Jun 14 '13 at 15:55
SIGINT is CTRL+C. As far as the terminal closing: http://stackoverflow.com/a/5547386/1496080 – damian Jun 14 '13 at 15:57

Catch a forced exit from terminal (x button on top OR ctrl+Z)

1 Answers1