socket.send is async, but does not provide callback, the data will just buffer up

async.websocket.js

// https://developer.mozilla.org/en-US/docs/Web/API/WebSocket

// Allows you to add callback to socket.send..

// Uses Async.js but you could change that.


socket.sendAsync = function sendAsync(payload, callback){
  callback = callback || function (){};
  var _self = this;
  _self.send(payload);
  if (_self.bufferedAmount === 0) return callback();

  async.whilst(function (){
    return (_self.bufferedAmount > 0);
  }, function (fn){
    return async.nextTick(fn);
  }, function done(){
    return callback();
  })
};