title: WCF 4 REST - How to gain full control over the messages sent
body: <p><strong>Background:</strong>
  I am currently using the Visual Studio 2010 online template "WCF REST Service Template 40(CS)" and it works great for my primarily JSON based service. I've even got it working to return a stream when returning an image.</p>
  
  <p><strong>Scenario:</strong>
  I am currently looking into the server push &amp; multipart/x-mixed-replace technology to replace the polling for images method I am currently using.</p>
  
  <p><strong>The Problem:</strong>
  The issue I am facing is that I am unable to find a way to get FULL control of every byte that is sent out on the wire, and this is causing me to be unsuccessful in properly implementing the multipart/x-mixed-replace mechanism. This REST service is automatically putting in the http version, content-length, etc automatically when i would rather have full control of everything that goes on the wire in this particular instance.</p>
  
  <p>Any help would be much appreciated. The server push tech seems so cool!</p>