Fiddler Script

[Marco]

I want use Fiddler Script and I have those packets with this host name :

wl.search.ar.ns.test.com

If I use oSession.HostnameIs how can I do ?

So ? 

if (oSession.HostnameIs("wl.search.ar.ns.test.com")) {
            oSession.hostname="199.156.34.12";
}

is it correct ?

[Eric Lawrence]

I don't know what "how can I do ?" means. What specifically are you trying to accomplish?

The code that you wrote, when placed inside the OnBeforeRequest method of your FiddlerScript, will change the hostname of any request for the specified hostname to the specified IP address.

The Tools > HOSTS... command in Fiddler works similarly, but also fixes up HTTPS certificates, etc.

Regards,
Eric Lawrence
Telerik

 

 

[Marco]

Don't go that, with script and with Tools --> HOST --> Host Remapping
Help me !!!

[Marco]

I use a Windows application, is it the problem ?
Your Fiddler go only with Browsers programs  ?

[Marco]

Listen, I use WireShark to know what type network traffic is with my Windows application and I see TCP and HTTP.

[Eric Lawrence]

Howdy, Marco--

I still don't understand what problem you're having? What specifically are you trying to do, and what exactly happens?

Fiddler works with any program that supports a proxy, which is essentially anything written in Java, .NET, C++, etc. Sometimes, poorly-written programs will not automatically use the system's proxy settings and must be manually configured to use the proxy (127.0.0.1:8888) but telling me what the program you're using is will help.

Regards,
Eric Lawrence
Telerik

 

 

[Marco]

Listen, when I set proxy with this command :
netsh winhttp set proxy 127.0.0.1:8888

then, I must reboot computer ?

[Eric Lawrence]

No, you don't need to reboot anything.

What version of Windows are you using?
Do you think the application in question is using WinHTTP? If so, is it a 32bit program or a 64bit program?

Regards,
Eric Lawrence
Telerik

 

 

[Marco]

This Windows Application is a 32bit and I'm using Windows 7 Pro 64bit.
After that I set proxy 127.0.0.1:8888 I see capture packets with other program (Windows application) but I don't see capture with this application, where is the problem ?

[Marco]

How can I know if this application use WinHTTP ?
This application go on Internet for to use web service or other service and this application surf on internet pages

[Marco]

Listen, if this can help you .
After that I set proxy 127.0.0.1:8888 and I run "Fiddler" without set "Fiddler Script" this windows application don't go more on internet pages and don't work other services

[Eric Lawrence]

What, specifically, is the application?

Does it use HTTPS? Have you enabled HTTPS decryption in Fiddler? Have you trusted Fiddler's root certificate?

Regards,
Eric Lawrence
Telerik

 

 

[Marco]

The application is Windows Phone Emulator, I test my application on this emulator and I must debug my application

[Eric Lawrence]

Hi, Marco--

The "Windows Phone Emulator" isn't really an application at all-- it's a virtual machine. As such, there are special requirements you need to follow in order to get its traffic captured. Have a look at http://stackoverflow.com/questions/23462697/windows-phone-8-1-emulator-not-proxying-through-fiddler and if you still have problems, please provide information about what version of VS and Windows you're using.

Regards,
Eric Lawrence
Telerik