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From Dirk-Willem van Gulik <di...@webweaving.org>
Subject Re: Anyone experienced problem with piping CGI stdout back to server?
Date Thu, 05 Aug 1999 10:36:12 GMT


On Thu, 5 Aug 1999, Igor Kovalenko wrote:

> I'm trying to port Apache 1.3.6 to a new platform (Unix-like OS, called
> Neutrino, from QNX Software).
> 
> Everything works, except for CGIs, which are broken in a weird way.
> Their stdout simply is not being delivered back to server. I spent a
> week tracing that, to noavail. The stdin and stderr both work fine. On
> the CGI side everything seems to be ok, write() returns good numbers,
> however read() on server side just always returns 0. No errors are
> reported at OS level. 
> 
> I also tried to write a simple mod_cgi simulator which does all that
> 'pipe->fork->dup2->exec' sequence and then passes data all the way
> around. Played with it to check OS capabilities - everything works as
> expected.

Asking the ovious, a flush does not give anything back, no errors ?

	if (fprintf(stdout, ...
		perror("fprintf..");
	if (fflush(stdout))
		perror("fflush..");

DW



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