Fiddler will capture the Https traffic without any further configuration or setup. With Fiddler running, you can run the UWP project from within Visual Studio and Fiddler debugging will work. I’ll start with Windows, because it’s relatively straight forward to get setup. In this case you can adjust the “Fiddler listens on port”.Įnabling remote connection in Fiddler Windows (UWP) If you’re running Skype, or some other communication tools, it may have jumped onto the default port configured in Fiddler. Under the Connections tab, make sure the “Allow remote computers to connect” checkbox is checked. This can be done by opening the Options window. You’ll also need to setup Fiddler debugging for remote traffic.I’m not going to repeat the documentation, so check out how to Configure Fiddler to Decrypt HTTPS Traffic. You need to make sure you have setup Https traffic decryption.Var users = await client.GetStringAsync('') īefore we get started with the individual platforms, it’s worth checking your configuration for Fiddler: protected override async void OnAppearing() We’ll use a Https endpoint on the assumption that if we can intercept Https then we can also intercept Http traffic. In the OnAppearing method in the MainPage of the Xamarin.Forms application, I’ve added some basic code to retrieve a string for a Https endpoint. I’ve selected to target all three platforms.

For this post I’ve created an application using the Blank Xamarin.Forms template that comes with Visual Studio 2019. The same basic approach will work for a native or Xamarin iOS/Android application as well. In this post I’ll walk through setting up Fiddler debugging for a Xamarin.Forms application. Unfortunately, the same effort that goes into protecting apps from such attacks, also means that it is harder for developers to setup Fiddler debugging. Debugging using tools like Fiddler or Charles can be used to inspect the traffic from your application. You can stage a man-in-the-middle attack on your own application. The easiest way to validate this is to pretend to be a hacker. You don’t know whether the problem lies with your application, or the backend services.

One of the most frustrating things as a frontend developer is when you are receiving incorrect data.

Fiddler setup proxy on local pc