Sample Android Project

1. What's it?

Intercepting HTTPS traffic on Android Devices and Android Emulators is more complicated than iOS.

If you've struggled to config XML settings, let check out this sample project that we've already configured for you:

2.1 Prepare

• Android Studio 4.0.1

• Pixel 3 Emulator with API 27+ (We suggest that we should create a brand-new Emulator device rather than using the current one. Visit Android Virtual Devices windows in Android Studio)

• Download a sample project at

Automatic Script for Android Emulator

If you run this project on Android Emulator (Google APIs version), you can check out the Automatic Script and Proxyman provides to:

• Set HTTP Proxy, Install, and Trust Proxyman Certificate automatically.

• Then you can skip the step 2.2 and 2.3

2.2 Set Wifi Proxy to Proxyman

• Open your Android Emulator -> Setting app -> Wifi: Make sure your Wifi connection is good. Sometimes, it's "Limited Connection" that you could not set the Wifi Proxy. If it happens, please remove the emulator and create a new one again.

• Click on the Wifi then clicking on Edit Button in two places

• Start set HTTP Proxy that the same IP and Port value from Android Guideline (Proxyman app -> Certificate -> Install Certificate on Android Devices)

2.3 Download and Install Proxyman Certificate

• Open Google Chrome on your Android Emulator

• Visit http://proxy.man/ssl​

• Download the Certificate and select VPN and App Category

• At this stage, please verify that everything is good before moving to the next stage

2.4 Start the sample project

• After config the Proxy Wifi on your Android Emulator, please make sure to stop the sample app if you're opening

• Make sure Proxyman app is opening

• Start the sample project again in Android Studio and click the Fetch button on the top right navigation bar

• At this stage, you can see HTTPS Traffic on Proxyman -> Select google.com domain and enable SSL

• Try to click the Fetch button again to see HTTPS Content on Proxyman. All done

3. Sample Config

The following is the config that you can intercept HTTPS Traffic from https://google.com

• AndroidManifest.xml

<manifest
    xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.android.networkconnect"
    android:versionCode="1"
    android:versionName="1.0">
​
    <!-- Min/target SDK versions (<uses-sdk>) managed by build.gradle -->
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
​
    <application
        android:label="@string/app_name"
        android:icon="@drawable/ic_launcher"
        android:theme="@style/Theme.Sample"
        android:allowBackup="true"
        android:networkSecurityConfig="@xml/network_security_config">
        <activity
            android:name="com.example.android.networkconnect.MainActivity"
            android:label="@string/app_name"
            android:uiOptions="splitActionBarWhenNarrow">
​
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

• res/xml/network_security_config.xml

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <!--Set application-wide security config using base-config tag.-->
    <!--Set domain-specific security config using domain-config tags. -->
    <!--See https://developer.android.com/training/articles/security-config.html for more information.-->
    <debug-overrides>
        <trust-anchors>
            <!-- Trust user added CAs while debuggable only -->
            <certificates src="system" />
            <certificates src="user" />
        </trust-anchors>
    </debug-overrides>
    <base-config cleartextTrafficPermitted="true">
        <trust-anchors>
            <certificates src="system" />
        </trust-anchors>
    </base-config>
​
    <domain-config>
        <domain includeSubdomains="true">www.google.com</domain>
        <trust-anchors>
            <certificates src="user"/>
            <certificates src="system"/>
        </trust-anchors>
    </domain-config>
</network-security-config>

4. Troubleshooting

Depend on Android Emulator and APIs version, you might encounter some errors.

1.After setting the Wifi Proxy in Android Studio, I could not visit http://proxy.man/ssl

=> Please try to restart the Emulator and make sure the Wifi Status in Emulator is "Connected"

=> Delete your Android Emulator and create a new one

2. I get SSL Errors when intercepting HTTPS traffics

=> Sometimes, your Android Emulator doesn't load Proxyman Certificates => Please stop the project and start again.

=> Make sure your domains are listed in res/xml/network_security_config.xml

3. Android Device connection is often dropped and hardly connect

=> Try to add 8.8.8.8 as a DNS on your current Mac Wifi.

Discussion at https://github.com/ProxymanApp/Proxyman/issues/636​