node-red-contrib-home-assistant-websocket/dist/homeAssistant/heartbeat.js

Node-RED integration with Home Assistant through websocket and REST API

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.startHeartbeat = startHeartbeat;
const debug_1 = __importDefault(require("debug"));
const debug = (0, debug_1.default)('home-assistant:ws:heartbeat');
const HEARTBEAT_TIMEOUT = 5000;
const MIN_HEARTBEAT_INTERVAL = 10000;
function startHeartbeat(client, interval, host) {
    let beatTimeoutId;
    const heartbeatIntervalId = setInterval(async () => {
        beatTimeoutId = setTimeout(() => {
            debug(`No pong received from ${host} attempting to reconnect`);
            client.reconnect(true);
        }, HEARTBEAT_TIMEOUT);
        debug(`Ping sent to ${host}`);
        try {
            await client.ping();
            clearTimeout(beatTimeoutId);
            debug(`Pong received from ${host}`);
        }
        catch (e) { }
    }, 
    // mininum of a 10 second heartbeat
    Math.max(MIN_HEARTBEAT_INTERVAL, interval * 1000));
    return () => {
        clearInterval(heartbeatIntervalId);
        clearTimeout(beatTimeoutId);
    };
}