Using Fiddler with Decisions

Overview

Fiddler is a comprehensive web debugging and analysis tool. For Decisions, Fiddler can be used to assist with debugging API calls by providing access to the request headers/details. This article will cover the necessary changes needed to utilize Fiddler.

Configuring Fiddler in Decisions

Fiddler cannot capture traffic from localhost; therefore, the following needs to be configured for Decisions.

1. Open DecisionsServiceHost.exe.config with a text editor. This file can be found under C:\Program Files\Decisions\Decisions Services Manager for a standard install.
   
2.  Once opened, the following needs to be added within the AssemblyBinding block within the file:

<system.net>
<defaultProxy
                enabled = "true"
                useDefaultCredentials = "true">
<proxy autoDetect="false" bypassonlocal="false" proxyaddress="http://127.0.0.1:8888" usesystemdefault="false" />
</defaultProxy>
</system.net>

Once the following lines have been added, Restart Decisions.