getIP = function( ){
    import web.rest.client;
    var http = web.rest.client();
    var ip = http.api("http://myip.ipip.net",,"(\d+\.\d+\.\d+\.\d+)").get();

    if( !ip ){
        ip = http.api("https://" ++ time().year ++ ".ip138.com/",,"(\d+\.\d+\.\d+\.\d+)").get();
    }
    if( !ip ){
        ip = http.api("https://www.ipshudi.com/",,"(\d+\.\d+\.\d+\.\d+)").get();
    }
    return ip;
}

api太方便了，直接拿用