Hi,

there is map:
map $http_host $hosts {
hostnames;
default 0;
.example.com 1;
.example.net 1;
...
.example.org 1;
}

How to read the value of $hosts in C module code?
How to make it right, that's mean do not evaluate it more than once per request?

I want to do some modifications of body response based on 'type' of host and map
would simplify the code, at least hope so.
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