import 'dart:io';
import 'dart:convert';
main()async{
List a = 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for(int i=0; i<a.length; i++){
Whois w = Whois(domain: a[i]);
await w.getWhois();
}
}
class Whois{
Whois({this.domain});
Socket socket;
String domain;
bool dataFinished = false;
bool doneFinished = false;
bool getData = false;
String s = 'start:';
Future getWhois()async{
await request();
while(!dataFinished){
await Future.delayed(Duration(milliseconds: 100));
}
}
Future request()async{
dataFinished = false;
doneFinished = false;
getData = false;
try {
socket = await Socket.connect('whois.cnnic.net.cn', 43);
socket.listen(onData, onError: onError, onDone: onDone);
print('============================================================================================================');
print('$s $domain');
socket.write(domain + '\n');
}catch(e){
print('from request error: ${e.toString()}');
print('waiting 2 seconds');
sleep(Duration(seconds: 2));
}
}
void onError(e){
print('===================== error ==============================');
print('from error side: ${e.toString()}');
errorFinished = true;
}
void onData(value)async{
getData = true;
String data = utf8.decode(value);
print('===================== WHOIS ==============================');
if(data.contains('interval')){
print('system notice too fast, wait 2 seconds');
socket.destroy();
sleep(Duration(seconds: 2));
s = 'restart';
await request();
}else{
print('not find interval');
dataFinished = true;
print('whois:::::::: ${data.substring(0, 18)}');
}
}
onDone()async{
int t = 1;
print('mmmmmmmmmmmmmmmmmmmmm DONE mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm');
sleep(Duration(milliseconds: 100));
while(t<5){
if(getData == false){
print('wairint data from onDone function: $t');
sleep(Duration(milliseconds: 50));
t++;
}else{
t = 5;
}
}
if(getData == false){
socket.destroy();
print('wait too long time without response, wait 2 second to restart.');
sleep(Duration(seconds: 2));
s = 'restart';
await request();
}
}
}
