example

Example

This example demonstrates how to use the webpush-go library to send push notifications.

Running the Example

1. Start the server:

   go run main.go

   The server will start on port 8080 and generate the VAPID keys.

2. Subscribe to notifications:

   Open your browser and navigate to http://localhost:8080. The browser will ask for permission to show notifications. Click "Allow".

3. Send a test notification:

   Click the "Send Test Notification" button. You should receive a push notification in your browser.

How it Works

• The main.go file starts a web server that serves the index.html and service-worker.js files.
• When you visit index.html, the JavaScript code subscribes to push notifications and sends the subscription object to the server.
• The server stores the subscription in memory.
• When you click the "Send Test Notification" button, the browser sends a request to the server, which then uses the webpush-go library to send a notification to your browser.

Browser Compatibility

The example has crude browser detection and sends the appropriate VAPID authentication scheme to the server.

• For Chrome, it uses the webpush scheme.
• For other browsers, it uses the vapid scheme.

This is handled in the index.html file, where the browser is detected and the authScheme is sent to the server when a notification is requested. The main.go server then uses this authScheme to send the notification with the correct VAPID headers.