title: XHR streaming closes connection by design?
body: <p>I was reading this article: <a href="http://blog.pusher.com/what-came-before-websockets/" rel="noreferrer">http://blog.pusher.com/what-came-before-websockets/</a>, and the following text gets my attention:</p>
  
  <blockquote>
    <p>XHR Streaming worked in all browsers the responseText of the
    XMLHttpRequest object would continue to grow until the connection was
    closed meaning a reconnection had to eventually be forced to clear
    this buffer.</p>
  </blockquote>
  
  <p>If I understand this correctly, does this mean that whenever the buffer reaches certain size (what is the actual size here, by the way?), the connection will reset itself to clear up this buffer? In other words, XHR streaming is as long living as the size of this buffer?</p>
  
  <p>Can someone please confirm this.</p>