title: Apache mod_proxy content-length vs chunked encoding
body: <p>I have apache configured to proxy for a (old, creaky, and basically http 1.0) web server that does not deliver a content-length header, just relying on closing the connection to mark end of data.</p>
  
  <p>Under apache 2.2, mod_proxy handled this by using Transfer-Encoding: chunked, and then delivering the data as fast as the remote server would deliver the data. Under apache 2.4, mod_proxy handles this by waiting for the entire response from the remote server, then delivers the page with a content-length. As the backend server could potentially take 30+ seconds to gradually fill a page of results, the older behavior is preferable. There is no obvious configuration change that would have resulted in this behavior; I've tried out proxy-sendchunked but it doesn't seem to help (as described, it relates to data being uploaded by POST requests, which isn't the issue here).</p>
  
  <p>Is this configurable and I've just missed it? </p>