Conditional headers

[Simbiat]

Is there a way to set headers based on some condition? In Apache I could use <IF> statement or something like

set Cache-Control "max-age=2592000,public" "expr=%{CONTENT_TYPE} =~ m#image/svg\+xml#i"

but I do not see a way to do that in OLS. Or am I missing something?

 

[LiteCache]

Litespeed (LSWS and OLS ) supports expressions but limited and it is not fully Apache supported.

https://httpd.apache.org/docs/2.4/expr.html#examples

 

[Simbiat]

Do I have to use them in an .htaccess file specifically? Because I've tried IF conditions in "Context" module's headers and it did not work: OLS generated headers with those names, instead.
Are Litespeed's differences in expressions support documented somewhere?

 

[LiteCache]

Do I have to use them in an .htaccess file specifically?

Yes, where else?

LiteSpeed supports it, but as already said, it is limited. With the last update, the compatibility with Apache was extended, at least with the LSWS. Unfortunately, I don't know whether this range of functions was also implemented in OLS.

 

[Simbiat]

Well, it would have made sense to support that in the headers section directly, as well Will try using what we have, though. Thanks for the info.

 

[Simbiat]

Hm... Does it really read the headers from .htaccess, though? I tried just "Header set x-test-htaccess true" (for test purpose) and

<IfModule headers_module>
    Header set x-test-htaccess true
</IfModule>

But the header was not added, even though, I know that .htaccess file was read, since to ensure that, I moved the rewrite rules from "/" context to it. And, of course, I've restarted the server after each change.

 

[Cold-Egg]

For OLS, you can set the header via Virtual Host > context > Header Operations
More example https://openlitespeed.org/kb/setting-up-cors-on-openlitespeed/

 

[Simbiat]

For OLS, you can set the header via Virtual Host > context > Header Operations
More example https://openlitespeed.org/kb/setting-up-cors-on-openlitespeed/

I know that, but I can't apply any conditions there, aside from directory root. And, to be honest, migrating a couple of dozens of rules from Apache into separate contexts, even if they rules were based on directories, seems like an extreme chore

 

[LiteCache]

Is there a way to set headers based on some condition? In Apache I could use <IF> statement or something like

set Cache-Control "max-age=2592000,public" "expr=%{CONTENT_TYPE} =~ m#image/svg\+xml#i"

but I do not see a way to do that in OLS. Or am I missing something?

What about this?

<FilesMatch "\.(svg|xml)$">
    Header set Cache-Control "public,max-age=2592000"
</FilesMatch>

 

[Simbiat]

What about this?

Nope. I think OLS simply ignores "Header" clause.

 

[LiteCache]

And this? It works with LSWS.

SetEnvIf HEADERS ^ HEADERS
SetEnvIf Request_URI "\.(svg|xml?.)$" !HEADERS
Header set Cache-Control "public,max-age=2592000" env=HEADERS

 

[LiteCache]

or this? Works with LSWS

RewriteCond %{REQUEST_URI} \.(svg|xml?.)$
RewriteRule ^.*$ - [ENV=HEADERS:true]
Header set Cache-Control "public,max-age=2592000" env=HEADERS

 

[Simbiat]

Nope. I am guessing, that anything else besides rewrite conditions is part of "Reads Apache's configuration files directly" feature.

 

[LiteCache]

Sorry, can't believe that. Setting a header in .htaccess belongs to the basic of the basics.

 

[Simbiat]

Can it be that processing it may require some other settings? or maybe disabling something?

Offtopic, but if I would consider LSWS starter: how many workers OLS use?

 

[LiteCache]

Number of workers is secondary. You must care about the available RAM. Starter license has a 2 GB limit!!!

 

[Simbiat]

Number of workers is secondary. You must care about the available RAM. Starter license has a 2 GB limit!!!

That's enough for my needs for now. Or at least it looks to be so far

 

[LiteCache]

Domain limit: >>>> 1 <<<<<

 

[Simbiat]

Domain limit: >>>> 1 <<<<<

that is fine as well. for now. but still, would want to understand whether that's the solution for headers issue or I am doing something wrong with the current setup in OLS.

 

[Simbiat]

Confirmed: exact same .htaccess file, that did not work in OLS worked in LSWS without any changes.