title: A long HTTP request will pause the websocket data transfer?
body: <p>I have a page PA witch contains an iframe element, and the src attribute of the iframe reference to page PB. In PA, I've established a websocket connection with the server.</p>
  
  <p>So, in this case, if I have a large file to post to server in PB, will this operation pause the data transfer between the PA and server?</p>
  
  <p>I mean, the post request in PB will take more than 1 minute to finish, is that means in this 1 minute, all the data transfer will be paused in a queue, until the post request is finished?</p>