@achingbrain/nat-port-mapper/dist/src/upnp/utils.js

Port mapping with UPnP and NAT-PMP

import os from 'node:os';
export function findNamespacedKey(key, data) {
    let ns = null;
    Object.keys(data).some((k) => {
        if (new RegExp(`!/:${key}$/`).test(k)) {
            return false;
        }
        ns = k;
        return true;
    });
    if (ns == null) {
        throw new Error('Incorrect response');
    }
    return ns;
}
export function* findLocalAddresses(family) {
    const interfaces = os.networkInterfaces();
    let foundAddress = false;
    for (const infos of Object.values(interfaces)) {
        if (infos == null) {
            continue;
        }
        for (const info of infos) {
            if (info.internal) {
                // ignore loopback
                continue;
            }
            if (info.family !== family) {
                continue;
            }
            if (info.family === 'IPv6' && info.address.startsWith('fe80')) {
                // ignore IPv6 link-local unicast
                continue;
            }
            if (info.family === 'IPv4' && info.address.startsWith('169.254')) {
                // ignore IPv4 link-local unicast
                continue;
            }
            foundAddress = true;
            yield info.address;
        }
    }
    if (!foundAddress) {
        throw new Error('Could not detect any local addresses eligible for mapping - please pass a `localAddress` to the map function instead');
    }
}
export function getNamespace(data, uri) {
    let ns;
    if (data['@'] != null) {
        Object.keys(data['@']).some(function (key) {
            if (!/^xmlns:/.test(key)) {
                return false;
            }
            if (data['@'][key] !== uri) {
                return false;
            }
            ns = key.replace(/^xmlns:/, '');
            return true;
        });
    }
    return ns != null ? `${ns}:` : '';
}
export function stripHostBrackets(host) {
    if (host.startsWith('[')) {
        host = host.substring(1);
    }
    if (host.endsWith(']')) {
        host = host.substring(0, host.length - 1);
    }
    return host;
}
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