Node.js

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###Node.js

####Socket.IO

  • io.sockets.emit(all client)
  • socket.broadcast.emit(all client except you)
  • socket.emit(only you)

socket.io now allows rooms/groups. for a client to join and leave a room:
socket.io 现在原生支持join和leave with room or group

  • socket.join(‘room1’);
  • socket.leave(‘room1’);

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io.sockets.on('connection', function (socket) {
      //these should do the same thing  
      io.sockets.emit('this', { receivers: 'everyone'});

      socket.broadcast.emit('this', { receivers: 'everyone but socket'}); 
      //emits to everyone but socket
      socket.emit('this', { receivers: 'socket'}); //emits to socket
});

Request URL: ws://localhost:8080/socket.io/1/websocket/Jr7emUQyeh2cm8vwZYCc

Request Method: GET

Status Code: 101 Switching Protocols