Need example for testing an asp.net web handler deployed on a server

[Mr. Me]

I have modified asp.net web handler and deployed it on a server.The handler works greate on my local machine using a static XML file but is giving IIS 500 errors when deployed.Is there and example which I could use to modify my code to run against a live data feed ?This is what I have used with the static file :WebRequest req = null; WebResponse rsp = null; try { string uri = "https://mytestSite.com/Test_Handler.ashx";\[code\] req = WebRequest.Create(uri); req.Method = "POST"; // Post method req.ContentType = "text/xml"; // content type // Wrap the request stream with a text-based writer StreamWriter writer = new StreamWriter(req.GetRequestStream()); // Write the XML text into the stream //StreamReader reader = new StreamReader(Server.MapPath("~/20121129-0121-1.xml")); -- Would this line capture the stream ???????? StreamReader reader = new StreamReader(req.GetRequestStream()); string ret = reader.ReadToEnd(); reader.Close(); writer.WriteLine(ret); writer.Close(); // Send the data to the webserver rsp = req.GetResponse(); //Calls the handler code StreamReader sr = new StreamReader(rsp.GetResponseStream()); string responseString = sr.ReadToEnd(); sr.Close();\[/code\]