title: Does the HTTP Protocol support multiple content types in response headers?
body: <p>I'm wondering if I can return the response header </p>
  
  <pre><code>Content-Type: application/json text/json 
  </code></pre>
  
  <p>or isn't this legal?</p>
  
  <p>The HTTP protocol states that Content-Type should be of mediaType and that mediaType is defined as the following:</p>
  
  <pre><code>   media-type     = type "/" subtype *( ";" parameter )
     type           = token
     subtype        = token
  </code></pre>
  
  <p>But I'm having trouble interpreting what this means, can anyone enlighten me?</p>
  
  <p>Thanks!</p>