title: Get response body using nsiHttpChannel
body: <p>I'm currently creating a Firefox extension application to capture HTTP response and compare its response body (HTML, etc) with data. I am using observer service to capture all HTTP request and response, and implement function observe, register/unregister observer, etc. </p>
  
  <p>Using the function above i can get the request and response header, but i cannot get response body like HTML or other things. Is there any way to get the body using the function i mentioned above?</p>
  
  <p>Thanks for your help.</p>