Developer question related to cookies

I am planning to add the vary cookie to setting, and give a new API in about v3.1 or v3.2. For now, please try the following codes and see if it works or not:

add_filter( 'litespeed_vary_cookies', function( $cookies ) {
	$cookies[] = 'stl_script';
	return $cookies;
} );

I have a similar situation. I’m using a cookie to serve different versions of the same page. I tried your solution @hailite, but it’s not working correctly.

The vary header is included, but only when cache is not hit:

x-litespeed-cache: miss
x-litespeed-vary: cookie=next_lan
x-turbo-charged-by: LiteSpeed

If the cache is hit, the vary header is nowhere to be found:

x-litespeed-cache: hit
x-turbo-charged-by: LiteSpeed

It’s almost acting like a “passive” don’t cache certain cookies setting, meaning if for some reason the cache is not hit on some page (regardless of having the cookie), the x-litespeed-vary header will be included, but not otherwise.

I get the same issue when using;

add_action('init', function() {
   if (method_exists('LiteSpeed_Cache_API', 'vary_add')) { 
     LiteSpeed_Cache_API::vary_add('next_lan');
   }
})

I’m also using Cloudflare, don’t know if that affects cookies though.

Hi,

when you have cache hit , other header like x-litespeed-tag , x-litespeed-vary will be dropped and not shown to user.

Could you please check on the content instead of header to verify if vary works or not ?

Best regards,

The content(a banner) didn’t appear when the cache was hit, only when missed. I did get it to work by editing .htaccess though:

### marker LOGIN COOKIE start ###
RewriteRule .* - [E="Cache-Vary:wp-postpass_124e250c9dfea8eoe63758772526411e,next_lan"]
### marker LOGIN COOKIE end ###

Now when I have the cookie set in my browser, the banner actually shows and cache hits as x-litespeed-cache: hit,private.

I know this is not the best practice because it’s within ## LITESPEED WP CACHE PLUGIN - Do not edit the contents of this block! ##.

How can I use it outside this block? Should I just include the following line: RewriteRule .? - [E=Cache-Vary:next_lan] outside the block by it’s own? Or maybe outside, but wrapped in <IfModule LiteSpeed> tags?

I don’t know why the other methods didn’t work for me, maybe the headers where overriden or had some conflict with another plugin.

• This reply was modified 4 years, 7 months ago by wenape.
• This reply was modified 4 years, 7 months ago by Yui.

Hi,

Please try move it out from LScache marker , I think it should still work

Best regards,