nodejs获取本机内网和外网ip地址的实现代码

var os = require(os);
function getLocalIP() {
    var map = [];
    var ifaces = os.networkInterfaces();
    console.log(ifaces);

    for (var dev in ifaces) {
        if (dev.indexOf(eth0) != -1) {
            var tokens = dev.split(:);
            var dev2 = null;
            if (tokens.length == 2) {
                dev2 = eth1: + tokens[1];
            } else if (tokens.length == 1) {
                dev2 = eth1;
            }
            if (null == ifaces[dev2]) {
                continue;
            }

            // 找到eth0和eth1分别的ip
            var ip = null, ip2 = null;
            ifaces[dev].forEach(function(details) {
                if (details.family == IPv4) {
                    ip = details.address;
                }
            });
            ifaces[dev2].forEach(function(details) {
                if (details.family == IPv4) {
                    ip2 = details.address;
                }
            });
            if (null == ip || null == ip2) {
                continue;
            }

            // 将记录添加到map中去
            if (ip.indexOf(10.) == 0 ||
                ip.indexOf(172.) == 0 ||
                ip.indexOf(192.) == 0) {
                map.push({"intranet_ip" : ip, "internet_ip" : ip2});
            } else {
                map.push({"intranet_ip" : ip2, "internet_ip" : ip});
            }
        }
    } 
    return map;
}

console.log(getLocalIP());