rocket.chat.mqtt/lib/usertyping/publish.js

It's a MQTT Server, using redis to scale horizontally.

'use strict';

var _rocketChat = require('rocket.chat.proto');

var _publish = require('../Routes/publish');

var _publish2 = _interopRequireDefault(_publish);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const decodeTyping = (0, _rocketChat.decoder)('typing');
const encodeTyping = (0, _rocketChat.encoder)('typing');

_publish2.default.add('notify-room/:rid/typing', (client, packet, { rid }) => {
	const { user } = client;

	if (!user || !user._id) {
		return false;
	}

	if (!client.subscriptions[`room-messages/${rid}`]) {
		return false;
	}

	const [status, ...args] = decodeTyping(packet.payload);

	if (typeof status === typeof true || args.length) {
		return false;
	}

	packet.qos = 0;
	packet.retain = false;

	packet.payload = encodeTyping({ status, _id: user._id });

	return true;
});