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From "Plüm, Rüdiger, VF-Group" <ruediger.pl...@vodafone.com>
Subject Re: mod_wombat and luasocket
Date Fri, 08 Aug 2008 13:39:40 GMT
Have you looked in the httpd error log.
I bet the processing httpd process died with a segfault or something similar.

Regards

Rüdiger 

> -----Ursprüngliche Nachricht-----
> Von: Corsix  
> Gesendet: Freitag, 8. August 2008 15:12
> An: dev@httpd.apache.org
> Betreff: Re: mod_wombat and luasocket
> 
> Seems I was wrong; commenting out that call doesn't make luasocket
> load. This still leaves the main question unresolved though; why does
> require"socket" cause a blank response (as even a standard error would
> be caught by mod_wombat's usage of lua_pcall)?
> 
> 2008/8/8 Corsix <corsix@www.corsix.org>:
> > Hi,
> >
> > While using mod_wombat and attempting to use luasocket (with require
> > "socket"), I get a white screen. Assuming test.lua is:
> > -- code --
> > function handle(r)
> >  r:write "Start\n"
> >  require "socket"
> >  r:write "Done\n"
> > end
> > -- end code --
> > The expected output when requesting this page via a web 
> browser would give:
> > Start
> > Done
> > If "socket" is changed to "lpeg" (assuming you have LPEG installed),
> > or the require line is commented out, then yes, that is the output.
> > However, as-is, the response is a blank screen. As far as I 
> can tell,
> > the cause is this part of luasocket's usocket.c:
> > /* code */
> > 
> /*------------------------------------------------------------
> -------------*\
> > * Initializes module
> > 
> \*------------------------------------------------------------
> -------------*/
> > int socket_open(void) {
> >    /* instals a handler to ignore sigpipe or it will crash us */
> >    signal(SIGPIPE, SIG_IGN);
> >    return 1;
> > }
> > /* end code */
> > After commenting out the call to signal and recompiling, 
> the above Lua
> > code will happily load socket.
> >
> > Why does commenting out this call cause luasocket to now load, and
> > what undesired consequences are there of doing this?
> >
> > Peter
> >
> 

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