title: Duplicate values for x-frame-options
body: <p>I'm setting x-frame-options on the pages of my website but due to some nested logic, on some pages I see duplicate values like:</p>
  
  <pre><code>X-FRAME-OPTIONS:SAMEORIGIN,SAMEORIGIN
  </code></pre>
  
  <p>instead of:</p>
  
  <pre><code>X-FRAME-OPTIONS:SAMEORIGIN
  </code></pre>
  
  <p>Is it okay to have duplicate values assigned to X-FRAME-OPTIONS and will it pick the first value that is assigned and ignore the rest?</p>
  
  <p>Thank you.</p>