Using Charles Proxy to View Calls and Responses

License Information

To activate Charles:

• Registered Name: GAT HUB SRL

• License Key: 2b0ca996bd7debbe69

You can enter this via:
Help → Register

Video presentation of the flow:

Charles Proxy on Desktop and Mobile devices - Tester Work

Installation and Setup

1. Download v 4.6.8 Charles Proxy (or older versions) on your laptop: Charles Web Debugging Proxy • HTTP Monitor / HTTP Proxy / HTTPS & SSL Proxy / Reverse Proxy

2. Go to Download-> Previous Release-> v4.6.8 (v5 does not work with the license key above)

3. Register your Charles client using the license key

4. Launch Charles

5. SSL Proxy settings: Navigate to menu item Proxy -> SSL Proxy Settings  -> SSL Proxying

6. Check “enable SSL Proxying”

7. Add “*.iheart.com” and port 443

8. To be safe add ‘*’ and port 443

9.  Restart Charles on your computer

10.  Install an iOS build on your mobile device. The device should be connected to the same wi-fi as the laptop.

11. Launch the app on a mobile device. Some calls may come through Charles on the laptop.

12.  Installing Charles Certificate: On the mobile device, open the device browser like Safari or Chrome. Go to Charles Web Debugging Proxy • SSL CA Certificate installation.

13. It will ask to download/install the certificate. Tap Download/Install

14. Go to device settings eg. On iOS, go to Settings – General – Profiles. It will show a certificate for Charles:

15. Tap and install it

16. Then got to Settings – General – About – scroll all the way down to Certificate Trust Settings.

17. Tap and enable the toggle for the certificate that was installed.

18. Relaunch the app. A permission modal may come up on your laptop.

19. Select “Allow’

20. Charles should now start showing calls.

21. Logs should show 200 status for us.api.iheart.com calls and other calls (Method: Get, Post… Method: Connect means that Charles is not properly set up) as below. Red checkmarks should not be seen. If not, repeat the steps for SSL Proxy settings and Charles certificate installation.

Starting a Charles Session (Required Before Every Test)

1. Get Your Local IP Address

In Charles:
Help → Local IP Address
Take note of the IP shown.

2. Configure Your Mobile Device

iOS / Android

1. Go to Settings → Wi-Fi

2. Tap the info icon (i) on the current network

3. Scroll to Configure Proxy

4. Select Manual

5. Enter:

   • Server: Your computer’s local IP

   • Port: 8888

Android only

Under Bypass proxy for, enter:

localhost,127.0.0.1

Also ensure the build is a debug build so Charles can capture calls.

3. Start Capturing

1. Open the app on your mobile device

2. In Charles, switch to the Sequence tab

3. A permission alert will pop up → click Allow

You should now see network calls appearing in Charles.