Android

Mac

• Install “Charles Root Certificate” into “System” folder of Keychain

• Edit certificate to “Always Trust”

• Enable SSL Proxying

• Restart your Mac

Android device

Install wifi certificate

• Export root certificate from Charles

• Upload this file to Download folder of Android device
• Install “Certificates”
  • “Network & internet” > “Network preferences” > “Install certificate”

Change wifi proxy setting from Android device

• Proxy: Manual
• Hostname: IP of your Mac
• Port: 8888

Install CA certificate

• Download CA certificate from “http://charlesproxy.com/getssl”
• Upload this file to Download folder of Android device
• Install “CA certificate” from Android device
  • Encryption & credentials > Install a certificate > CA certificate

Set this in “network_security_config.xml”

<network-security-config>
    <debug-overrides>
        <trust-anchors>
            <!-- Trust user added CAs while debuggable only -->
            <certificates src="user" />
        </trust-anchors>
    </debug-overrides>
</network-security-config>

If it doesn’t work

• Make sure device connects to internet before changing to proxy
  • Turn off wifi, then turn on wifi back
• Make sure “Proxy” > “Mac OS Proxy” is unchecked
• Try to change wifi proxy from Manual to Auto, then Auto to Manual again