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From Jeff Trawick <traw...@gmail.com>
Subject Re: [users@httpd] FcgidAccessChecker hangs.
Date Sun, 11 Nov 2012 12:12:31 GMT
On Sunday, November 11, 2012, Peter Danenberg wrote:

> Digging a little deeper, mod_fcgid hangs on line 318 of
> fcgid_bridge.c:
>
>   ap_scan_script_header_err_core(r, sbuf, getsfunc_fcgid_BRIGADE,
>                                  brigade_stdout)
>
> I don't know enough about ap_scan_script_header_err_core yet to figure
> out why this might be the case.


Can You compare an strace/truss/dtruss of your script running with the
alternative modules?

>
> > The following trivial script,[1] which simply returns a 200 header,
> > hangs under FcgidAccessChecker:
> >
> >   (call-with-dynamic-fastcgi-query
> >    (λ (query)
> >      (display-status-&c.)))
> >
> > The same script works fine under mod_fastcgi with
> > FastCgiAccessChecker; or handled as an fcgid-script or fastcgi-script.
> >
> > The output from error_log is as follows:
> >
> >   [Sun Nov 11 01:39:44 2012] [info] mod_fcgid: server
> >   localhost:/usr/local/var/html/scm/api/access.scm(15965)
> >   started
> >
> >   [Sun Nov 11 01:40:24 2012] [warn] [client 127.0.0.1] mod_fcgid: read
> >   data timeout in 40 seconds
> >
> >   [Sun Nov 11 01:40:24 2012] [error] [client 127.0.0.1] Premature end of
> >   script headers: access.scm
> >
> >   [Sun Nov 11 01:40:24 2012] [warn] [client 127.0.0.1] mod_fcgid: user
> >   (null) access check failed, respond 500, URI /scm/api/access.scm
> >
> >   [Sun Nov 11 01:40:26 2012] [debug] fcgid_pm_main.c(357): mod_fcgid:
> >   gracefully terminated 1 processes
> >
> > How can I diagnose the problem? I find it interesting that it works
> > under mod_fastcgi but not mod_fcgid; I'm not sure whether that implies
> > the problem is in mod_fcgid, however.
> >
> >
> > Footnotes:
> > [1]  The script is written in Chicken Scheme, by the way.
> >
> >
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>
>
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