Set Vary: Accept-Encoding Header (nginx)

Question

I have an nginx server and can\'t seem to find any information on how to send Vary: Accept-Encoding headers for CSS and JS files. Does anyone have info about this?

Thank

Answer 1

Simple. In Nginx conf:

vim /etc/nginx/nginx.conf

Add the following near the bottom under the section:

    ##
    # Gzip Settings
    ##

    gzip on;
    gzip_disable "msie6";

    # gzip_vary on;
    # gzip_proxied any;
    # gzip_comp_level 6;
    # gzip_buffers 16 8k;
    # gzip_http_version 1.1;
    # gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

Just uncomment the gzip_vary on; parameter and restart or reload nginx service:

service nginx restart

This should fix the issue. If you are running an old version of nginx, you may need to enable gzip on;, as this is required for the vary header to work.

I hope this helps. FYI, this applies to all server/site conf files unless overwritten in their own respective server blocks. server {}

Source info for nginx, apache and IIS: https://www.maxcdn.com/blog/accept-encoding-its-vary-important/