CORS OPTIONS requests not supported, breaking usage with SPDY about nginx-upload-progress-module HOT 7 OPEN

# upload progress
location ^~ /progress {

  if ($request_method = OPTIONS ) {
    add_header Access-Control-Allow-Origin allowed-host.example.com;
    add_header Access-Control-Allow-Methods "GET, OPTIONS";
    add_header Access-Control-Allow-Headers "origin, authorization, accept, X-Progress-ID";
    add_header Access-Control-Allow-Credentials "true";
    add_header Content-Length 0;
    add_header Content-Type text/plain;
    return 204;
  }

  add_header Access-Control-Allow-Origin allowed-host.example.com;
  add_header 'Access-Control-Allow-Credentials' 'true';

  upload_progress_json_output;
  report_uploads proxied;
}

  if ($request_method = OPTIONS ) {
                add_header Access-Control-Allow-Origin "https://mydomain.ext";
                return 200;
        }

location /progress {
        ...
        if ($request_method = OPTIONS ) {
            add_header Access-Control-Allow-Origin *;
            add_header Access-Control-Allow-Methods "GET, OPTIONS";
            add_header Access-Control-Allow-Headers "origin, authorization, accept";
            add_header Access-Control-Allow-Credentials "true";
            add_header Content-Length 0;
            add_header Content-Type text/plain;
            return 200;
        }
        ...
}