Morse Link

Local network text messaging with Morse code.

Run

dotnet run

Open http://localhost:5050 in two browser tabs.

1. Enter your name
2. Click on someone nearby to connect
3. They get a popup to accept/reject
4. Type and send messages
5. Click Morse code to hear it

Done.un

dotnet run

Server starts on http://localhost:5050

To access from another device on the same network, use the Network URL shown in the terminal output.

Message Format

All WebSocket messages are JSON:

{
  "type": "SEND_TEXT",
  "text": "hello",
  "morse": ".... . .-.. .-.. ---",
  "username": "alice",
  "code": "1234"
}

Connection Flow

1. User joins → Server assigns unique 4-digit code
2. User registers with discovery service (re-registers every 10s)
3. App scans for nearby peers every 2 seconds
4. User clicks peer → Sends CONNECTION_REQUEST
5. Peer gets modal to accept/reject
6. If accepted → Both connected, can exchange messages
7. When closing → Automatically unregisters from discovery

Morse Code Timing

• Dot: 100ms
• Dash: 300ms
• Gap between symbols: 100ms
• Gap between letters: 300ms
• Gap between words: 700ms

Frequency: 800 Hz

Known Limitations V1

• Text only (no images/files)
• One connection at a time per user
• No persistent history
• Local network only
• No authentication/encryption
• 4-digit codes not user-friendly for manual entry

Next Steps (V2+)

• Speech-to-text input
• Flash animation on incoming messages
• Multiple simultaneous connections
• File sharing with Morse animation
• QR code for connection sharing
• Learn mode with timing control
• Device persistence with local storage