title: Response time Issue in WCF REST Service returning a large file
body: <p>HI,</p>
  
  <p>I have created a WCF REST service with response format as JSON. The basic functionality of the service is that when it is called it will return a large file(mostly zip file) from the file system to the requester. The time taken for the file to completely downloaded by the user is taking more than 20 mins for 20MB file.</p>
  
  <p>How to find the issue in the service implementation?
  Is there any config parameters to be included to accommodate large file downloads using WCF REST Service?
  Is there tools/methods available to monitor the performance of a WCF REST service?</p>