[eva2000]

Thanks to Mert over at vBSEO, I got a test license installed on local server, from what I can see, this is what is happening. vBulletin varnish xml plugin has extra code to assign custom cookies to members and guests (session prefix + imgloggedin yes) and also code to strip guest visitors of the session id/hash so that varnish will cache guests without cookies. Litespeed cache's .htaccess tries to match these plugin cookies so you're telling litespeed cache to cache php pages where imloggedin=yes isn't set and where userid/password cookie isn't set.

default litespeed cache .htaccess i am using

RewriteCond %{HTTP_COOKIE} !zzimloggedin=yes
RewriteCond %{HTTP_COOKIE} !zzuserid=
RewriteCond %{HTTP_COOKIE} !zzpassword=
RewriteCond %{REQUEST_METHOD} ^HEAD|GET$
RewriteCond %{QUERY_STRING} !s=[a-fA-F0-9]{32}
RewriteCond %{QUERY_STRING} !product=vbnexus
RewriteCond %{REQUEST_URI} !^(login|register|usercp|private|profile|cron|image)\.php$
RewriteCond %{REQUEST_URI} !^admincp
RewriteRule ^(.*\.php)?$ - [L,E=Cache-Control:max-age=300]

Varnish plugin stripping guests of session id/hash

PHP Code:

if($vbulletin->userinfo['userid'] <= 0)
{
$vbulletin->session->vars['sessionurl']  = '';
$vbulletin->session->vars['sessionurl_q']  = '';
} 


Now what is happening is when vbseo is enabled, it seems to be reintroducing the guest visitors session id/hash into the cookies for guests.

vBSEO Disabled

This is what i see with vbseo disabled, only zzlastactivity and zzlastvisit cookies are set when varnish plugin enabled as it strips sessionid/hash.



Header for vBSEO disabled with varnish plugin enabled



vBSEO Enabled

Now when you enable vbseo, session id/hash for guests is reintroduced along with vbseo_loggedin=yes/deleted for members/guests, which in theory if you used varnish cache (in apache+varnish setup), varnish wouldn't cache the vbseo page as it has cookies vbseo_loggedin so varnish vcl would need adjusting. But it doesn't explain why litespeed cache isn't caching the page other than proper detection of vbseo_loggedin cookie in htaccess ?



Header when vBSEO enabled with Varnish plugin enabled



litespeed htaccess might need additional for guests caching somewhere ?

RewriteCond %{HTTP_COOKIE} vbseo_loggedin=deleted