Nginx config variable names with special characters

nginx

This is primarily in relation to the $arg_NAME and $cookie_NAME variables.

I couldn't find much documentation on the syntax of variables in nginx.
What characters can variable names contain, and are there any requirements to escape them?

For example, how would I get the value of the cookie group[key]?
$cookie_group[key] doesn't seem to work for me, presumably because [] are considered special characters?

Best Answer

I actually figured it out a while ago, and thought that I should update this for anyone else who stumbles across this.

http://forum.nginx.org/read.php?11,241016,241069#msg-241069

Basically a patch (available at above link) needs to be applied for something like a group[key] cookie to work.

Related Solutions

nginx HTTPS – How to Serve HTTPS with Same Config as HTTP

You can combine this into one server block like so:

server {
    listen 80;
    listen 443 default_server ssl;

    # other directives
}

Official How-To

Nginx – How to check Cookie header line and custom cache on Nginx

If you set your proxy_cache_key to some string that contains cookie variable, than all users with different cookies will have its own cached version of page.

Like this

  proxy_cache_key  "$host$request_uri$cookie_auth_id";

This will allow both caching and distinctive pages for different users.

Best Answer

Related Solutions

nginx HTTPS – How to Serve HTTPS with Same Config as HTTP

Nginx – How to check Cookie header line and custom cache on Nginx

Related Topic