在socket.io中连接到服务器时如何发送数据？

Question

In socket.io client side javascript, I connect like this

var socket = new io();

then I send data to server like this

socket.emit('start', data);

But I want to send data asap to the server with a promise that it was received. How can I do that? I was hoping there was something like this

var socket = new io(null, data, function(data) {
    // data was received on server and server responded with complete
    // data is 'ok'
});

node.js

var io = socket.listen(server);
io.on('connection', function(socket, data) {
    socket.emit('ok');
});

What's the closest I can do something like this?

Thanks

Answer 1

This answer looks like it might be a good answer to your question, along with some sample code as to how you could do it manually anyway. The short version seems to be that the model of promises just doesn't work with EventEmitters . Hope this helps!