nginx: Is it possible to use a map variable in fastcgi_read_timeout

Question

I'm trying to do this:

map $request_uri $php_timeout { default 60s; "~^/slow/process/(?:1|two|three)" 120s; } ... fastcgi_read_timeout $php_timeout; 

but nignx -t gives an error:

nginx: [emerg] "fastcgi_read_timeout" directive invalid value in /etc/nginx/...

Is this simply not possible? docs don't say it's not (or that it is).

Nb. if it's not clear, I have several URLs that are best described by a set of regex tests that require different timeouts. I could write separate location blocks for all of these but that gets messy.

Answer 1

fastcgi_read_timeout cannot contain variables. Directives that could use variables are marked so.

For example in fastcgi_param:

[…] The value can contain text, variables, and their combination.