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Asked: 2026-06-11T22:54:23+00:00

I’m connecting to a server in my C application using a socket connection. Once

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I’m connecting to a server in my C application using a socket connection. Once in a while the server just wont return anything. I mean NOTHING. So my application hangs. I’ve tried using a timeout:

signal(SIGALRM, timeouthandler);
alarm(myTimeout);

(socket and connection logic)...    

alarm(0);

but it still hangs and doesn’t return to the script. A co-worker said it might be because I’m using a blocking connect. But from what I’m reading you set a connection to non-blocking after the connection is already made.

What should I look into?

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1 Answer

  1. Editorial Team

    ‘What should I look into?’

    As a debugging tool, I find Wireshark is useful when debugging socket connections. I’ve done a few socket applications in C, and sometimes it comes down to the TCP stack library doing wonky things, and Wireshark can sometimes uncover that.

    Hope this helps,

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