[PD-dev] socket gurus
august
august at alien.mur.at
Tue Mar 2 16:39:11 CET 2004
On Tue, 2 Mar 2004, Tom Schouten wrote:
> hi august,
> check man 2 connect:
> ETIMEDOUT
> Timeout while attempting connection. The server may be too
> busy to accept new connections. Note that
> for IP sockets the timeout may be very long when syncookies
> are enabled on the server.
> so you're better off using select, then you can set your own timeout.
> tom
Tom,
I don't even make it that far. Connect() doesn't return anything!
I can't even get an error response. And without a connection, select does
me no good.
Doing a search, I saw some ppl using alarm and signal around the connect
call to kill it if it hangs. This looks like a dirty hack though. Any
comments? code below.
-august.
signal (SIGALRM, connect_timed_out);
alarm (CONNECT_TIME_OUT);
if(connect(sock,(struct sockadr *)& server,sizeof(server))<0)
{
perror("connect");
exit(1);
}
/**
** Just in case the other end crashes without closing
** and we hang on a write
** time out the whole program after a while
**/
alarm (NORMAL_TIME_OUT);
signal (SIGALRM, normal_time_out);
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