LSWS support for Expressions

[serpent_driver]

Does LSWS support Apache Expressions?

https://httpd.apache.org/docs/current/en/mod/mod_headers.html#examples
Last example

 

[Pong]

Header append Cache-Control s-maxage=600 "expr=%{REQUEST_STATUS} == 200"?
No. not supported.

 

[serpent_driver]

Does LSWS support REQUEST_STATUS?

If yes, is there any other way to use REQUEST_STATUS to get information which status code is set?