原文：http://docs.telerik.com/fiddler/Configure-Fiddler/Tasks/MonitorLocalTraffic

 

To monitor traffic sent to http://localhost or  from IE8 or below or the .NET Framework:

• Use your machine name as the hostname instead of Localhost or 127.0.0.1

  For example, instead of

  http://localhost:8081/mytestpage.aspx

  Go to:

  http://machinename:8081/mytestpage.aspx

• Use one of these addresses:

  -To use the IPv4 adapter (recommended for the Visual Studio test webserver, codename: Cassini):

  http://ipv4.fiddler

  -To use the IPv6 adapter:

  http://ipv6.fiddler

  -To use localhost in the Host header:

  http://localhost.fiddler

• Click Rules > Customize Rules... and add this code to the Rules file:

  static function OnBeforeRequest(oSession:Fiddler.Session){ if (oSession.HostnameIs("MYAPP")) { oSession.host = "127.0.0.1:8081"; } }

  Now, http://myapp will act as an alias for 127.0.0.1:8081