[wt4hq] Broken Pipe

[Mario Lorenz]

Am 19. Jun 2007, um 07:55:12 schrieb Olivier F5MZN:
> Actually, I still have some gaps regarding signal handling on socket 
> programming so any recommandations are welcome, Mario!
> 
> Can you send me a suggested modification? I should rather create a CVS 
> or SVN access to let you modify by yourself but I'm always too busy to 
> find a couple a minutes for that!

along the lines of:
   _send(...)
...
		case EAGAIN:
                case EINTR:
		case EWOULDBLOCK:
		case ENOBUFS:
			/* Socket buffer is full:
			 * will try to send the datas later
			 */
			break;
...
(just send the data next time).

and in case of receive: Just receive again:
...
                                if (err == EAGAIN)
                                        continue;
                                if (err == EINTR)
                                        continue;
                                sprintf(szError, "error %d on recv",
err);
                                tun = closeconn(sock, szError);
                                continue;
...

But this is only a correctness thing. 
Closing the connections is a valid error handling strategy,
especially since you dont expect signals to occur.
I just stumbled on this when I saw the SIGPIPE strace posted here.


> > On a related note, Olivier, will you be in Friedrichshafen at Ham Radio
> > next weekend?
> 
> Yes, the WT team will be at FHN this year. We will be hosted at the 
> Apello booth, feel free to visit us! We will also take part to the great 
> BCC diner on Saturday.

Excellent. Hopefully I will be there, too. (90% chance).

Mario
-- 
Mario Lorenz                            Internet:    <ml at vdazone.org>
                                        Ham Radio:   DL5MLO at DB0ERF.#THR.DEU.EU
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