title: Nginx configuration for enabling CORS
body: <p>I am following the reference trying to have my nginx
  accept CORS.
  <a href="http://enable-cors.org/server_nginx.html" rel="nofollow noreferrer">http://enable-cors.org/server_nginx.html</a></p>
  <p>But no matter how i config my /etc/nginx/site-enable/default as following.
  It just doesn't work. Is anything wrong about my configuration?</p>
  <p>Thanks.</p>
  <pre><code>server {
    listen 80 default_server;
    listen [::]:80 default_server ipv6only=on;
  
    root /usr/share/nginx/html;
    index index.html index.htm;
  
    # Make site accessible from http://localhost/
    server_name localhost;
    #add_header Access-Control-Allow-Origin *; # &lt; this is the needed header
  
    location / { 
      # First attempt to serve request as file, then
      # as directory, then fall back to displaying a 404.
      #try_files $uri $uri/ =404;
      # Uncomment to enable naxsi on this location
      # include /etc/nginx/naxsi.rules
  
      if ($request_method = 'OPTIONS') {
        add_header 'Access-Control-Allow-Origin' '*';
        #   
        # Om nom nom cookies
        #   
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        #   
        # Custom headers and headers various browsers *should* be OK with but aren't
        #   
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
        #   
        # Tell client that this pre-flight info is valid for 20 days
        #   
        add_header 'Access-Control-Max-Age' 1728000;
        add_header 'Content-Type' 'text/plain charset=UTF-8';
        add_header 'Content-Length' 0;
        return 204;
      }   
      if ($request_method = 'POST') {
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
      }   
      if ($request_method = 'GET') {
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
      }   
    }    
  }
  </code></pre>