title: What does "200 connection established" HTTP response status code mean?
body: <p>I know about 200 <strong>OK</strong> but what is 200 <strong>connection established</strong>?</p>
  <p>To give some background, I am testing out XMLHTTPRequest in an old firefox browser(version 26 to be exact) and I see this as the response code. I am not able to view either the response headers or body so there definitely seems to be some issue. In newer browsers I see 200 OK and there are no issues with the response. I want to understand what this response code means so that I can debug.</p>
  <p>In addition I would like to know if this code indicate a problem with the client or server?</p>
  <p>Thanks for any help.</p>