How can I capture the SOAP request generated on localhost?

Question

I have a simple windows console app that I have added a service reference to and I am trying to call a method and make a request! I am using the proxy classes generated by .Net when I added the service reference.

The web service is not on my machine but externally hosted by the client!

I am getting an error so I would like to see the HTTP request that is being sent.

I can't see the request on fiddler, why not?

Can I seen the generated request by debugging the console app?

Answer 1

Aside of Fiddler and embedded tracing tool there is another approach to see generated XML SOAP - custom MessageEncoder. It allows to interceprt original byte content including any malformed xml.

In order to implement tracing using this approach you need to wrap a standard textMessageEncoding with custom message encoder as new binding element and apply that custom binding to endpoint in your config.

Also you can see as example how I did it in my project - wrapping textMessageEncoding, logging encoder, custom binding element and config.

Answer 2

You can see localhost traffic with Fiddler. See this article in the Fiddler FAQ.

You could also turn on WCF Tracing.

Answer 3

Fiddler bypass local traffic. If you want to sniff local address in the client config set .localhost address (with dot prefix).