Send binary packet through WS? about artillery-core HOT 1 OPEN

	if (payload === undefined) {
		debug("Error: Payload is undefined.");
		return callback(null, context);
	}

	
    if (typeof payload === 'object') {
      payload = JSON.stringify(payload);
    } else {
      // if(payload) payload = payload.toString();
	  // Convert string payload to buffer
	  if(payload) {
	      var bytes = new Uint8Array(Math.ceil(payload.length / 2));
          for (var i = 0; i < bytes.length; i++) bytes[i] = parseInt(payload.substr(i * 2, 2), 16);
	  }
    }