title: Nginx proxy_pass headers
body: <p>Here is part of my location config:</p>
  
  <pre><code>        location /web {
                  proxy_pass http://192.168.1.141:8079/gateway/web;
                  add_header "TEST" 1;
                  proxy_pass_request_headers      on;
                  if ($request_method ~* "(GET|POST)") {
                  add_header "Access-Control-Allow-Origin"  *;
                  add_header "TEST" 1;
                  }
                  if ($request_method = OPTIONS ) {
                  add_header "Access-Control-Allow-Origin"  *;
                  add_header "TEST" 1;
                  add_header "Access-Control-Allow-Methods" "GET, POST, OPTIONS, HEAD";
                  add_header "Access-Control-Allow-Headers" "Origin, X-Requested-With, Content-Type, Accept";
                  return 200;
     }
  </code></pre>
  
  <p>I'm trying to configure to add TEST header to every request which will be done beyond /web, thus if link will contain "/web", add TEST header in all requests,i.e.</p>
  
  <pre><code>/web/mail/*
  /web/auth/*
  /web/people/*
  </code></pre>