404 error while trying to load XML file from Request.InputStream - Trying to pull XML node value

Hi,

Im trying to select a node list from a xml file with no success.

Here is the code I'm working with:

C#

private void m_application_EndRequest( object sender, EventArgs e )
        {
            HttpApplication app = (HttpApplication) sender;
            HttpContext cnt = app.Context;
            int duration = Environment.TickCount - (int) cnt.Items["TickCount"];
            int requestLength = cnt.Request.TotalBytes;
            TimeSpan tickspan = TimeSpan.FromMilliseconds(duration);
            string timespan = tickspan.Minutes.ToString() + ":" + tickspan.Seconds.ToString() + "." + tickspan.Milliseconds.ToString();
            string userID = "Null";

            string path = cnt.Request.Headers["SOAPAction"];
            if ((path != null) && (path != string.Empty))
            {
                path = path.Replace("\"", string.Empty);

                XmlDocument inputstream = new XmlDocument();

                using (Stream receiveStream = cnt.Request.InputStream)
                {
                    receiveStream.Position = 0;

                    using (StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8))
                    {
                        inputstream.Load(readStream);
                    }
                }

                XmlNamespaceManager nsmanager = new XmlNamespaceManager(inputstream.NameTable);
                nsmanager.AddNamespace("soap", "http://www.w3.org/2003/05/soap-envelope");
                nsmanager.AddNamespace("CoPilotHeader", "http://copilot.na.fire.com/copilotfire");
                nsmanager.AddNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
                nsmanager.AddNamespace("xsd", "http://www.w3.org/2001/XMLSchema");
                nsmanager.AddNamespace("df", "http://tempuri.org/");
                XmlNodeList xnlist = inputstream.DocumentElement.SelectNodes("/soap:Envelope/soap:Header/df:CoPilotHeader", nsmanager);

                userID = xnlist[0]["CmaToken"].InnerText;

            }
            else
            {
                try
                {
                    path = cnt.Request.Url.AbsoluteUri;
                }
                catch (NullReferenceException)
                {
                    path = string.Empty;
                }

                userID = "Null";
            }

            SrvLogging.LogPerformance( path, duration, cnt.Timestamp, -1,
                cnt.Request.ContentLength, Environment.MachineName, cnt.Request.HttpMethod,
                cnt.Response.Status, timespan, userID);
        }

Here is the SOAP/XML:

POST /FireServices/route.asmx HTTP/1.1
Host: cras.na.fire.com
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: "http://copilot.na.fire.com/copilotfire/GetRoute"<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Header><CoPilotHeader xmlns="http://copilot.na.fire.com/copilotfire/"><CmaToken>string</CmaToken><ErrorString>string</ErrorString><RecordCount>int</RecordCount></CoPilotHeader></soap:Header><soap:Body><GetRoute xmlns="http://copilot.na.fire.com/copilotfire/"><routeToken>string</routeToken><routeNo>string</routeNo></GetRoute></soap:Body></soap:Envelope>

Thoughts? I'm getting a 404 error when trying to load the xml file with the cnt.Request.InputStream

The ultimate goal is to pull the CmaToken out into the UserID string.