Using Fiddler2 with BizTalk HTTP Adapters
Fiddler2 is a great tool to use when you need to monitor or debug your HTTP traffic between any two endpoints. In fact, it automatically starts monitoring your Browser traffic when you start it up. It is especially helpful when you need to debug HTTP calls from BizTalk. However, you will notice that Fiddler will not automatically capture BizTalk’s traffic. Fiddler acts as a proxy which routes all your HTTP traffic from programs that use the WinInet HTTP module. IE, Microsoft Office and a number of products use WinInet. However, BizTalk does not use WinInet. So you need to tell BizTalk to route all traffic through fiddler. This can be done one of two ways:
1. Configure the proxy on the Send Handler of the HTTP-based adapter
Note that the port number is 8888. This is Fiddler’s listen port (see below). This option requires you to restart the host that this handler belongs to.
2. Configure the proxy on a send port of a HTTP-based adapter