code: function influxUdp(opts) {
    BaseClient.apply(this, arguments);
    opts = opts || {};
    this.host = opts.host || '127.0.0.1';
    this.port = opts.port || 4444;
    this.socket = dgram.createSocket('udp4');
  }
docs: A client that can send data to Influxdb backend via UDP
  @param {Object} opts options about the influxdb backend
  @param {String} opts.host the host of the influxdb. Default is 127.0.0.1
  @param {Number} opts.port the port of the UDP port of influxdb. Default is 4444.
  @param {Number} opts.sendQueueConcurrency specify the concurrency when send data to influxdb. Default is 10.