daikin-controller/lib/DaikinDiscovery.js

Control Daikin Air Conditioner devices using nodejs

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DaikinDiscovery = void 0;
const dgram_1 = require("dgram");
// Change this to true to output debugging logs to the console
const debug = false;
class DaikinDiscovery {
    constructor(waitForCount, callback) {
        this.listenAddress = '0.0.0.0';
        this.listenPort = 30000;
        this.probePort = 30050;
        this.probeAddress = '255.255.255.255';
        this.probeAttempts = 10;
        this.probeInterval = 500;
        this.probeData = Buffer.from('DAIKIN_UDP/common/basic_info');
        this.probeTimeout = null;
        this.discoveredDevices = {};
        this.callback = callback;
        // TODO: Which parameterrs are really needed
        // TODO: Also initialize DaicinAC instances?
        this.udpSocket = (0, dgram_1.createSocket)({ type: 'udp4', reuseAddr: true });
        this.udpSocket.on('error', (err) => {
            this.log(`ERROR udpSocket: ${err}`);
        });
        this.udpSocket.bind(this.listenPort, this.listenAddress, () => {
            this.udpSocket.addMembership('224.0.0.1');
            this.udpSocket.setBroadcast(true);
        });
        this.udpSocket.on('message', (message, remote) => {
            this.log(`${remote.address}:${remote.port} - ${message}`);
            // this.discoveredDevices[remote.address] = message.toString();
            this.discoveredDevices[remote.address] = remote.address;
            if (Object.keys(this.discoveredDevices).length >= waitForCount) {
                this.finalizeDiscovery();
            }
        });
        this.udpSocket.on('listening', () => {
            this.sendProbes(this.probeAttempts);
        });
    }
    sendProbes(attemptsLeft) {
        this.probeTimeout = null;
        if (attemptsLeft <= 0) {
            this.finalizeDiscovery();
            return;
        }
        this.log(`Send UDP discovery package ${attemptsLeft}`);
        this.udpSocket.send(this.probeData, 0, this.probeData.length, this.probePort, this.probeAddress);
        this.probeTimeout = setTimeout(this.sendProbes.bind(this), this.probeInterval, --attemptsLeft);
    }
    finalizeDiscovery() {
        if (this.probeTimeout !== null) {
            clearTimeout(this.probeTimeout);
            this.probeTimeout = null;
        }
        this.udpSocket.close();
        this.log(`Discovery finished with ${Object.keys(this.discoveredDevices).length} devices found`);
        this.callback(this.discoveredDevices);
    }
    log(message) {
        if (debug)
            console.log(message);
    }
}
exports.DaikinDiscovery = DaikinDiscovery;