How to avoid duplication of add_header directives in nginx?
http-headers, nginx
Solution
Use `include` in each location in include shared headers (this must be duplicated but only needs to be updated in the included config not each block individually).
Problem
The documentation says this: These directives are inherited from the previous level if and only if there are no add_header directives defined on the current level. My problem is that I have several `location` blocks that I want to cache, like this one: ``` add_header X-Frame-Options SAMEORIGIN; add_header Strict-Transport-Security "max-age=31536000; includeSubdomains;"; location ~ ^/img/(.*)\.(png|jpg|jpeg|gif|bmp)$ { expires 1w; add_header Cache-Control public; } ``` But that will make me lose all the headers declared outside of the block. So apparently the only way is duplicating those headers on every `location` block, eg: ``` add_header X-Frame-Options SAMEORIGIN; add_header Strict-Transport-Security "max-age=31536000; includeSubdomains;"; location ~ ^/img/(.*)\.(png|jpg|jpeg|gif|bmp)$ { expires 1w; add_header Cache-Control public; add_header X-Frame-Options SAMEORIGIN; add_header Strict-Transport-Security "max-age=31536000; includeSubdomains;"; } ``` Doesn't seem right. Any ideas?