title: Reduce waiting time for data from server
body: <p>My app calls my Python server to get some information. The information takes time to process before sending the data back to my app. Hence, the user waits for approximately 12 seconds, in order to get the data from the server.</p>
  
  <p>Is there any way that the app could receive the data in multiple batches (once some data has been processed, it gets sent to the app, and then when more data gets processed, more data gets sent to the app)?</p>
  
  <p><strong>I only know how to receive one batch of data per server call using NSURLConnection/AFJSONRequestOperation, is there any way to receive multiple batches of data per server call with iOS?</strong></p>