An attempt to provide a codelab for Webrtc in Android - Similar to codelab for web at https://codelabs.developers.google.com/codelabs/webrtc-web/

More at : https://vivekc.xyz/getting-started-with-webrtc-for-android-daab1e268ff4

The test setup contains of three components:

1. Signaling server
2. WebRTC Android App
3. WebRTC example web site

Important: The IP address of the signaling server is hardcoded to 192.168.178.207 and need to be changed in files SignallingClient.java and main.js.

• "Open an existing Android Studio project"
• Select the Step-3 folder
• On "Unable to get Gradle wrapper properties from:" click "Ok" to recreate gradle files
• Ignore/Cancel all git related questions
• Agree to update Gradle
• Now a warning appears, agree to "Remove Build Tools version and sync project"
• Select "Files" "Sync Project with Gradle Files"
• Building and installing the App should work at this point

The signaling server works uses npm and nodejs:

cd signalling
npm install
node index.js

The last command start the signalling server.

cd signalling
python3 -m http.server

Now open http://localhost:8000 in the browser. You can use a different web server as the python buildin, of course.

Change http to https in signalling/index.js, signalling/js/main.js and Step-3/app/src/main/java/xyz/vivekc/webrtccodelab/SignallingClient.java.

Then create files key.pem and cert.pem (e.g. with openssl) and uncomment the key options in signalling/index.js.

Command to create key.pem and cert.pem:

openssl req -newkey rsa:2048 -new -nodes -x509 -days 3650 -keyout key.pem -out cert.pem