title: WebSocket Stomp over SockJS - http custom headers
body: <p>I'm using stomp.js over SockJS in my javascript client. 
  I'm connecting to websocket using</p>
  
  <pre><code>stompClient.connect({}, function (frame) {
  </code></pre>
  
  <p>stomp over sockJS connection has 2 http requests: </p>
  
  <ol>
  <li>request to /info</li>
  <li>http upgrade request</li>
  </ol>
  
  <p>the client sends all cookies. I would like to also send custom headers (e.g. XSRF header) but didn't find a way to do that. Will appreciate any help.</p>