Wcf – How to capture non-browser data using Fiddler

fiddlerwcfweb services

I have a web application which communicates with a "wcf web service app" which is hosted on the same machine, "wcf web service app" works like a proxy, it communicates with another web service which is hosted on another machine and retrieves some of the data from that server.

When I monitor requests on my server using fiddler I can only monitor the traffic between the browser and the web service app on my server. I can not monitor the traffic between my "web service app" and "remote web service app", is it possible to monitor the second traffic I mentioned above?

Best Answer

Fiddler is a proxy; it captures any traffic you send to it. You need to configure your web service to send its traffic through Fiddler. You will probably find http://www.telerik.com/blogs/capturing-traffic-from-net-services-with-fiddler helpful.

Related Solutions

.net – WCF service startup error “This collection already contains an address with scheme http”

In .Net 4, you can use the multipleSiteBindingsEnabled option:

<system.serviceModel>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true">
    </serviceHostingEnvironment>
</system.serviceModel>

Then, you won't have to specify each address.

http://msdn.microsoft.com/en-us/library/system.servicemodel.servicehostingenvironment.multiplesitebindingsenabled.aspx

Wcf – How to use Fiddler to monitor WCF service

You need to add this in your web.config

<system.net>
  <defaultProxy>
    <proxy bypassonlocal="False" usesystemdefault="True" proxyaddress="http://127.0.0.1:8888" />
  </defaultProxy>
</system.net>

then Start Fiddler on the WEBSERVER machine.
Click Tools | Fiddler Options => Connections => adjust the port as 8888.(allow remote if you need that)
Ok, then from file menu, capture the traffic.

That's all, but don't forget to remove the web.config lines after closing the fiddler, because if you don't it will make an error.

Reference : http://fiddler2.com/documentation/Configure-Fiddler/Tasks/UseFiddlerAsReverseProxy

Best Answer

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.net – WCF service startup error “This collection already contains an address with scheme http”

Wcf – How to use Fiddler to monitor WCF service

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