Get all local host addresses

node-is-a-liar-snippet-3.js

var os = require('os');

function getLocalHosts() {
    var hosts = ['0.0.0.0', '::'];
    var interfaces = os.networkInterfaces();
    Object.keys(interfaces).forEach(function(interfaceName) {
        var interface = interfaces[interfaceName];
        interface.forEach(function(info) {
            var address = info.address;
            // append the interface name onto link-local IPv6 addresses
            // http://stackoverflow.com/a/34275391
            if (address.indexOf('fe80:') === 0) {
                address += '%' + interfaceName;
            }
            hosts.push(address);
        });
    });
    return hosts;
}