Conditional Request Headers
Table of contents
Module: mod_setenv
Description
The setenv module allows influencing the environment external applications are spawned in and the response headers the server sends to the clients.
Automatic Decompression
If you have a lot text-files compressed with gzip on disk and want that the browser is decompressing them on retrival you can use setenv to inject the Content-Encoding header:
$HTTP["url"] =~ "(README|ChangeLog|\.txt)\.gz$" {
setenv.add-response-header
= ( "Content-Encoding" =& "gzip")
mimetype.assign = ("" =& "text/plain" )
setenv.add-environmentAdds a value to the process environment (aka environment variables) that is passed to the external applications:
setenv.add-environment = (
"TRAC_ENV" =& "lighttpd",
"RAILS_ENV" =& "production"
setenv.add-response-headerAdds a header to the HTTP response sent to the client:
setenv.add-response-header = (
"Content-Encoding" =& "gzip"
setenv.add-request-headerAdds a header to the HTTP request that was received from the client:
setenv.add-request-header = (
"X-Proxy" =& server.name
setenv.set-request-header (since 1.4.46)setenv.set-response-header (since 1.4.46)setenv.set-environment (since 1.4.46)These directives set the given values, rather than appending the given values to the headers or environment.
These directives take precedence over the setenv.add-* counterparts.
Set a blank value for request or response header to remove the header.