Charles Docs-y

The Unofficial docs for Charles Proxy

Configure Charles Root certificate on Mac

The Root certificate is the magic ingredient that allows Charles to decrypt HTTPS traffic. This certificate basically tells your MacBook to give Charles permission to view and modify all HTTPS traffic that flows in and out of your machine. This becomes incredibly useful when testing your application and you need to modify HTTPS traffic. ThisContinue reading “Configure Charles Root certificate on Mac”

May 5, 2020May 26, 2020

iOS devices and Charles

This setup guide will help you configure Charles and your device so you can view your app’s network traffic in plain text. NOTE: You can’t view/intercept the traffic of apps with a pinned certificate. Most apps with sensitive data, e.g. banking apps, will block you from viewing/intercepting their traffic. If you just want to playContinue reading “iOS devices and Charles”

May 5, 2020June 4, 2020

Android devices and Charles

This tutorial will show you how to configure Charles and your device so you can view your app’s network traffic in plain text. NOTE: Since Android Nougat (7.1), Google have blocked you from intercepting/decrypting network traffic from Play Store apps. NOTE: To proceed with this tutorial, you will need to be able to build yourContinue reading “Android devices and Charles”

May 7, 2020November 2, 2020

Breakpoints – Modify the Request

The Breakpoint feature is great if you want to just intercept 1 Request (or Response) and modify some element of it. If you are a frequent user of Breakpoints, you also should have a look at the Rewrite feature. The following tutorial will show you how to use the Breakpoints feature to intercept a Request,Continue reading “Breakpoints – Modify the Request”

May 11, 2020June 4, 2020

Rewrite – Modify the Request and the Response

The Rewrite feature allows you to automatically change parts of HTTP Requests and Responses every time they meet a pre-defined set of rules. This tutorial will show you how to use the Rewrite feature to change the Request and the Response. Please note that you need to compete the Rewrite – Modify the Request tutorialContinue reading “Rewrite – Modify the Request and the Response”

May 11, 2020November 4, 2020

Rewrite – Tips & Tricks

Here are some tips and tricks I’ve picked up over the years while working with Rewrites that make creating them a little easier! The ‘Notes’ Columns Swap ‘Info’ column for ‘Notes’ The more Rewrites you use the more sense it makes to swap the ‘Info’ column for the ‘Notes’ one Right-click the the bar withContinue reading “Rewrite – Tips & Tricks”

May 12, 2020November 9, 2020

Latest

Android 11 devices and Charles

This tutorial will show you how to configure Charles and your Android 11 device so you can view your app’s network traffic in plain text. FYI, the root certificate installation steps are slightly different to older Android versions NOTE: Since Android Nougat (7.1), Google have blocked you from intercepting/decrypting network traffic from Play Store apps.Continue reading “Android 11 devices and Charles”

July 7, 2021July 5, 2021

Android Emulators and Charles

The only slight difference between configuring Charles to work for physical devices and emulators, is the wifi network. Emulators only have 1 available wifi network. All other setup task are the same as for a real Android device Android Wi-fi network You will notice that there is only 1 wifi network As your emulator isContinue reading “Android Emulators and Charles”

June 30, 2021July 5, 2021

Rewrite rules – Common Problems

Rewrite rules are an awesome tool but there are a few gotcha’s you should be aware of when using them. This post might save your future self hours of futile debugging! Unescaped characters “$” symbol in Response body If you have an unescaped “$” in your Response body value, the response can sometimes fail toContinue reading “Rewrite rules – Common Problems”

June 23, 2021July 6, 2021

3 ways to Reduce unwanted network traffic

Other than using the “Filter” field, there are 3 other ways to reduce the amount traffic your Charles sessions captures Recording Settings Exclude traffic from being recorded Add the URL(s) to the “Exclude” tab of the “Recording Settings…” feature Proxy -> Recording Settings -> Exclude Focused Host Focusing on specific hosts As the name suggests,Continue reading “3 ways to Reduce unwanted network traffic”

November 16, 2020November 17, 2020

Advanced Repeat

The Advanced Repeat feature lets you automatically hit endpoints at predefined intervals. You can also to add delays between each iteration. In this tutorial we are going to demonstrate 2 use cases for this feature: Performance testing Monitor health of specific endpoints Prerequisites Make sure you have installed and configured the Charles Root certificate on your MacContinue reading “Advanced Repeat”

November 9, 2020January 4, 2021

Firefox and Charles

If you want to view decrypted Firefox network traffic in Charles, you need to perform 1 extra task when compared to Chrome and Safari. You need to import the Charles root cert on your machine into Firefox. In this example, I will proxy traffic from the NY Times homepage, via Firefox, to Charles. This tutorialContinue reading “Firefox and Charles”

November 2, 2020July 5, 2021

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