pcb@gator.cacs.usl.edu (Peter C. Bahrs) (02/20/90)
I received excellent information regarding socket information...here is
another dilemma. I have a server with two sockets, A for normal
reading and B, interrupt driven. While processing A's message, a jump
to the signal handler for B occurs when a message is sent on B. Fine...
But I get another interrupt when, (..I believe), the socket is closed or
dissappears from the system, which causes a false accept.
Below is the code fragment I used to set the interrupt stuff for B:
if (setsockopt (sd->socket, SOL_SOCKET, SO_DEBUG, 0, 0) < 0)
{
*error = CISI;
fprintf (stderr, "ciServerInit: failed on setsockopt (%ld)\n",*error);
return;
}
/* wait for requests...system dependendent 5!!! */
listen (sd->socket,15);
if (sd->func != NULL)
{
/* set up the interrupt stuff */
signal (SIGIO, sd->func); /* this is the void func() */
fcntl(sd->socket,F_SETFL,FASYNC);
fcntl(sd->socket,F_SETOWN,getpid());
}
Questions:
Can I shut off the signal before the shutdown/close and re-start it?
How can I ignore the system deletion of the socket interrupt?
/*------------Thanks in advance...---------------------------------------+
| Peter C. Bahrs |
| The USL-NASA Project |
| Center For Advanced Computer Studies INET pcb@gator.cacs.sl.edu |
| University of Southwestern Louisiana ...!uunet!dalsqnt!gator!pcb |
| Lafayette, LA 70504 |
+-----------------------------------------------------------------------*/