Chat Application

Real-time chat application example

Features

• Multiple chat rooms
• User join/leave notifications
• Message history
• Room member list

Architecture

// Server
server.on('connection', (socket) => {
  socket.on('join-room', ({ room, username }) => {
    socket.join(room);
    socket.broadcastToRoom(room, 'user-joined', { username });
  });
  
  socket.on('send-message', ({ room, message }) => {
    socket.broadcastToRoom(room, 'new-message', {
      username: socket.id,
      message,
      timestamp: Date.now()
    });
  });
});

Implementation

Full example available in repository examples/chat-app/