Re: double startup ?

. TELAMON wrote:

>Hello,
>
>I am, at present, testing mod_backhand for Load Balancing.
>
>I have written something like a "mod_perl servlet"  and  its behaviour has changed since I have installed mod_backhand : it seems like ih all the HTTP request were executed twice.
>
>I think that this problem is due to the fact that mod_backhand is started twice as shown in the logs/error_log of Apache :
>  
>
Likely not.

><IfModule mod_backhand.c>
>  UnixSocketDir /home/apache/backhand
>  MulticastStats 127.0.0.1:4445
>  AcceptStats 127.0.0.0/24
>  
>
Balancing on localhost?  What is it that you hope to accomplish?  I'll 
assume your just testing things.

>Do you have any ideas ?
>  
>
Yes.  mod_perl hooks directly into the Apache module hook API.  Module 
hooks get called during every phase of the request _AND_ all sub 
requests.  mod_backhand makes a benign subrequest to determine how 
Apache would have treated the request (transforms, etc) then makes a 
balancing decision.  If you have any hooks other than "handler", they 
could get called more than once (this isn't only induced by 
mod_backhand, other modules do this too).  If you are only using 
"handler", I think it is still possible, but I'd have to look into it more.

$r->is_initial_req should give you some insight as to whether this is 
the "initial" Apache::Request for this HTTP request or not.

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