hap-nodejs
Version:
HAP-NodeJS is a Node.js implementation of HomeKit Accessory Server.
79 lines • 2.82 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.findLoopbackAddress = findLoopbackAddress;
exports.getOSLoopbackAddress = getOSLoopbackAddress;
exports.getOSLoopbackAddressIfAvailable = getOSLoopbackAddressIfAvailable;
const tslib_1 = require("tslib");
const os_1 = tslib_1.__importDefault(require("os"));
/**
* @group Utils
*/
function findLoopbackAddress() {
let ipv6 = undefined; // ::1/128
let ipv6LinkLocal = undefined; // fe80::/10
let ipv4 = undefined; // 127.0.0.1/8
for (const [name, infos] of Object.entries(os_1.default.networkInterfaces())) {
let internal = false;
if (infos) {
for (const info of infos) {
if (!info.internal) {
continue;
}
internal = true;
// @ts-expect-error Nodejs 18+ uses the number 4 the string "IPv4"
if (info.family === "IPv4" || info.family === 4) {
if (!ipv4) {
ipv4 = info.address;
}
// @ts-expect-error Nodejs 18+ uses the number 6 the string "IPv6"
}
else if (info.family === "IPv6" || info.family === 6) {
if (info.scopeid) {
if (!ipv6LinkLocal) {
ipv6LinkLocal = info.address + "%" + name; // ipv6 link local addresses are only valid with a scope
}
}
else if (!ipv6) {
ipv6 = info.address;
}
}
}
}
if (internal) {
break;
}
}
const address = ipv4 || ipv6 || ipv6LinkLocal;
if (!address) {
throw new Error("Could not find a valid loopback address on the platform!");
}
return address;
}
let loopbackAddress = undefined; // loopback addressed used for the internal http server (::1 or 127.0.0.1)
/**
* Returns the loopback address for the machine.
* Uses IPV4 loopback address by default and falls back to global unique IPv6 loopback and then
* link local IPv6 loopback address.
* If no loopback interface could be found a error is thrown.
*
* @group Utils
*/
function getOSLoopbackAddress() {
return loopbackAddress ?? (loopbackAddress = findLoopbackAddress());
}
/**
* Refer to {@link getOSLoopbackAddress}.
* Instead of throwing an error, undefined is returned if loopback interface couldn't be detected.
*
* @group Utils
*/
function getOSLoopbackAddressIfAvailable() {
try {
return loopbackAddress ?? (loopbackAddress = findLoopbackAddress());
}
catch (error) {
console.log(error.stack);
return undefined;
}
}
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