FiddlerCore not decoding properly

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Methe
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Methe asked on 01 Nov 2022, 10:53 AM

Hello does anyone else have an issue with the latest FiddlerCore 5.0.2 not decoding responses correctly?

It captures HTTPS traffic fine but runing the session.utilDecodeResponse() method returns garbage.

Interestingly the windows app works fine

Any thoughts?

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Nick Iliev
Telerik team
answered on 03 Nov 2022, 09:13 AM

Hello Methe Crain,

 

We are not observing irregularities related to the latest version of FiddlerCore and decoding capabilities. Can you please elaborate more on your issue by specifying what is happening? If possible, provide a sample endpoint (or even a basic demo app) that reproduces the issue so that we can investigate further.

Here is a very basic snippet that, we've used to confirm that the utilDecodeResponse method is working as expected.

FiddlerApplication.BeforeResponse += session =>
{

    if (session.uriContains("example.com"))
    {
        session.utilDecodeResponse();
        session.utilReplaceInResponse("<h1>", "<h3><i>");
        session.utilReplaceInResponse("</h1>", "</i></h3>");
    }

    // Important: You MUST also set session.bBufferResponse = true inside the BeforeRequest event handler above.
};

 

Regards,
Nick Iliev
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Nick Iliev
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