Re: pipe_loop: too many headers

On Fri, 4 Oct 2002 [email protected] wrote:

> Hi,
>
> Does anyone have an idea why I get this error when trying to use
> php 4.2.3 under OpenBSD with mathopd 1.4 / phpstub-0.5?
>
> Fri Oct  4 18:51:13 2002 [28715] pipe_loop: too many headers

One way to check what is going on is to run a patched version of phpstub
that dumps its input whenever this condition occurs. I have attached one
such patch. There are two possible causes for this error. Either the php
program emits so many CGI headers that it overflows phpstub's internal
buffer size (not likely) or the php program simply does not emit any CGI
headers at all, which is illegal. If you run the patched version and then
inspect the ChildLog it will become apparent which of the two it is.

Cheers
Michiel

Index: pipe_loop.c
===================================================================
RCS file: /home/boland/cvs/repository/phpstub/pipe_loop.c,v
retrieving revision 1.23
diff -u -r1.23 pipe_loop.c
--- pipe_loop.c	1 Nov 2001 00:14:27 -0000	1.23
+++ pipe_loop.c	5 Oct 2002 22:05:05 -0000
@@ -274,6 +274,7 @@
 			}
 		} else if (p->pstart == p->psize) {
 			stub_log("pipe_loop: too many headers");
+			write(2, p->pbuf, p->pstart);
 			return 1;
 		}
 	}