Web-Push learing (encrypt push message according subscription)

1. Forked from: https://github.com/web-push-libs/webpush-java
   MIT License

   For study - I use minified code, with minimal library dependencies.

   Original code was used mostly as example of bouncy castle API usage.
   Almost all code modified and build according webpush-go algorithm.

2. Used Bouncy Castle Crypto library
   https://bouncycastle.org/
   MIT License

3. Message encryption and vapid algorithm verified with:
   https://github.com/SherClockHolmes/webpush-go
   MIT Licence

Note:

For production use better HTTP client (not HttpsURLConnection).

See for example original: https://github.com/web-push-libs/webpush-java

How to use

Please read tutorial: https://developers.google.com/web/fundamentals/push-notifications/subscribing-a-user

1. Generate VAPID server key (the keys can be generated via https://github.com/web-push-libs/web-push)

   Set your VAPID server keys into file: c:\webpush-java\src\main\resources\server.properties

2. Create javascript service worker and create web-push subscription.

   Copy from subscription object endpoint, p256dh and auth values to file: c:\webpush-java\subscription.properties

3. Install

• java (>= JDK 1.8)
• gradle

4. Build project: gradle build

5. Run example: gradle run --args="Hello Web Push !" The example send notification to Google (or Mozilla) server and then to your browser.