Check if cookie does NOT contain specified content NGINX
In Nginx, each cookie is available in embedded variable $cookie_CookieName. In case you want to check cookie with name mycookie, you can do it using this configuration snippet:
if ($cookie_mycookie != "foobar") { return 401;}From nginx manual for the if command:
A condition maybe (among others):
Comparison of a variable with a string using the
=and!=operators;Matching of a variable against a regular expression using the
~(for case-sensitive matching) and~*(for case-insensitive matching) operators.Regular expressions can contain captures that are made available for later reuse in the $1..$9 variables.
Negative operators
!~and!~*are also available. If a regular expression includes the}or;characters, the whole expressions should be enclosed in single or double quotes.