property

Socket.data

data: Data

The user-defined data associated with this socket instance. This can be set when the socket is created via Bun.connect({ data: ... }). It can be read or updated at any time.

// In a socket handler
function open(socket: Socket<{ userId: string }>) {
  console.log(`Socket opened for user: ${socket.data.userId}`);
  socket.data.lastActivity = Date.now(); // Update data
}