title: Connection reset by peer (502) when contacting WCF service in IIS 7.5
body: <p>We have a WCF service that has been working fine for months. Just this morning, calls to this service began failing with the proxy server reporting "connection reset by peer" (502). Oddly enough there are no IIS log entries for the dropped connections, although we are able to detect them with WireShark. So it seems as if the thread is dying, leaving no trace behind.</p>
  
  <p>The problematic web method was retrieving 100 database records. We found that by restricting the results to 20 records it works as expected. I suspect there is a timeout coming into play, but with no exception or traceback it's very hard to know.</p>
  
  <p>Has anyone experienced this? Any suggestions on how to troubleshoot it?</p>