let socket = {
  url: '',
  conn: null,
  connect: function(ready, getMessage) {
    this.conn = new WebSocket(this.url)
    this.conn.onopen = (e) => {
        console.debug(e)
        ready()
    }
    this.conn.onmessage = (e) => {
      console.debug(e)
      getMessage(e)
    }
    this.conn.onerror = (e) => {
      console.error(e)
    }
    this.conn.onclose = (e) => {
      if (e.code != 1000) {
        console.error(e)
        return
      }
      console.debug(e)
    }
  },
  sendMessage: function(action, data = null) {
    var msg = {
      action: action
    }
    if (data != null) {
      msg['data'] = data
    }
    this.conn.send(JSON.stringify(msg))
  }
}