P2P Counter Example App

This example demonstrates the complete usage of the P2P Counter Capacitor plugin, including:

• NFC device discovery
• WebRTC mesh networking
• Real-time attendance tracking
• Peer connection management
• Keepalive system
• Network health monitoring
• Message prioritization
• Mesh topology visualization

Features

Core Features

• Toggle NFC discovery
• View connected peers
• Monitor network health in real-time
• Simulate ticket scanning
• Track attendee presence/absence
• Real-time sync across all connected devices

Advanced Features

• Mesh Network Visualization

  • Real-time network topology map
  • Connection strength indicators
  • Message flow visualization
  • Network health statistics

• Network Health Monitoring

  • Average latency tracking
  • Packet loss detection
  • Connection quality metrics
  • Peer connection status
  • Network bandwidth usage: ~500KB/hour per peer for keep alive messages

• Message Management

  • Priority-based message queuing
  • Automatic message retries
  • Message deduplication
  • Chunked message transfer
  • Compression for large messages

• Mesh Network Features

  • Automatic peer discovery
  • Optimal route calculation
  • Network self-healing
  • Connection load balancing
  • Multi-hop message relay

Event Management

• Multiple event support
• Manual and automatic counting modes
• Real-time attendance updates
• Historical attendance tracking
• Event-specific statistics

Platform-Specific Notes

iOS

• Requires iOS 13.0 or later
• NFC capability must be enabled in your provisioning profile
• Uses system NFC scanning UI
• Shows scan button instead of toggle switch

Android

• Requires Android API level 22 or later
• Uses HCE (Host Card Emulation) for NFC
• Shows toggle switch for NFC discovery
• Background service for continuous mesh networking

Running the Example

1. Install dependencies:

npm install

1. Build the plugin and example:

npm run build
cd example
npm install
npm run build

1. Add platforms:

npx cap add android
npx cap add ios

1. Sync changes:

npx cap sync

1. Run on device:

# For Android
npx cap run android

# For iOS
npx cap run ios

Network Requirements

• Peer-to-peer communication uses WebRTC
• STUN server used for NAT traversal
• Minimal bandwidth requirements:
  • Base: ~500KB/hour per peer
  • Peak: Depends on message frequency and size
  • Compressed messages for efficiency
  • Adaptive keepalive intervals

Troubleshooting

• Ensure NFC is enabled on devices
• Check network connectivity
• Verify permissions are granted
• Monitor logcat/console for detailed logs
• Check network health statistics for connection issues

Example Usage

See EXAMPLE.md for more details on how to use the plugin.