Getting RAW Soap Data from a Web Reference Client running in .net

I made following changes in web.config to get the SOAP (Request/Response) Envelope.
This will output all of the raw SOAP information to the file trace.log.

Working also for https - raw data are saved before wrapping to https envelope

<system.diagnostics>
  <trace autoflush="true"/>
  <sources>
    <source name="System.Net" >
      <listeners>
        <add name="TraceFile"/>
      </listeners>
    </source>
    <source name="System.Net.Sockets" >
      <listeners>
        <add name="TraceFile"/>
      </listeners>
    </source>
  </sources>
  <sharedListeners>
    <add name="TraceFile" type="System.Diagnostics.TextWriterTraceListener"
      initializeData="c:\a\trace.log"/>
  </sharedListeners>
  <switches>
    <add name="System.Net" value="Verbose"/>
    <add name="System.Net.Sockets" value="Verbose"/>
  </switches>
</system.diagnostics>

original link: http://stackoverflow.com/questions/300674/getting-raw-soap-data-from-a-web-reference-client-running-in-asp-net