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-   -   How to set a different session timeout for spiders? (https://vborg.vbsupport.ru/showthread.php?t=164152)

AceNZ 12-02-2007 08:44 PM

How to set a different session timeout for spiders?
 
I would like to set a different session timeout for spiders than for logged-in users. Spiders don't usually accept cookies, so it can quickly look like you have hundreds of them simultaneously accessing the site, when in fact it's just a single spider making a lot of requests. Reducing the session timeout will help minimize that effect.

I suspect that spiders aren't identified until the who is online page is displayed -- so it would actually be OK to make this change for all guests.... Ideally, the code would detect whether an incoming request included a session cookie, and set the timeout based on that.

Does anyone know where I would look in the code to make such a change?

Lynne 12-02-2007 09:48 PM

Why not just set your crawl-delay in your robots.txt file?

AceNZ 12-02-2007 09:52 PM

Quote:

Originally Posted by Lynne (Post 1393737)
Why not just set your crawl-delay in your robots.txt file?

I don't want to reduce the speed at which the site is crawled. I want to reduce (or ideally coalesce) the redundant / meaningless guest users in the who is online list.

--------------- Added [DATE]1196639979[/DATE] at [TIME]1196639979[/TIME] ---------------

I think I've figured out half of the answer (and I'm starting to understand vB's plugin system at the same time). I added the following code to the who's online online_query hook:

PHP Code:

if($vbulletin->options['WOLguests']){
  
$rkdatecut TIMENOW 300;
  
$hook_query_where " and session.userid <> 0 or (session.userid = 0 and session.lastactivity > $rkdatecut)";


The seems to have the effect I'm looking for in online.php. Now I'm looking for a similar hook for the summary that's displayed on the forum home page.

--------------- Added [DATE]1196640977[/DATE] at [TIME]1196640977[/TIME] ---------------

Unfortunately, there doesn't seem to be a hook in the associated query in the forumhome code, so I had to modifiy the code directly instead. Not ideal, but it works.

PHP Code:

$datecut TIMENOW $vbulletin->options['cookietimeout'];
$rkcut TIMENOW 300;
$numbervisible 0;
$numberregistered 0;
$numberguest 0;

$forumusers $db->query_read_slave("
        SELECT
            user.username, (user.options & " 
$vbulletin->bf_misc_useroptions['invisible'] . ") AS invisible, user.usergroupid,
            session.userid, session.inforum, session.lastactivity,
            IF(displaygroupid=0, user.usergroupid, displaygroupid) AS displaygroupid, infractiongroupid
        FROM " 
TABLE_PREFIX "session AS session
        LEFT JOIN " 
TABLE_PREFIX "user AS user ON(user.userid = session.userid)
        WHERE (session.lastactivity > 
$datecut and session.userid <> 0) or (session.lastactivity > $rkcut and session.userid = 0)
        " 
iif($vbulletin->options['displayloggedin'] == OR $vbulletin->options['displayloggedin'] == 3"ORDER BY username ASC") . "
    "
); 



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