//// /**
////  * File: TCP.cs
////  * Author: haraldwolff
////  *
////  * This file and it's content is copyrighted by the Author and / or copyright holder.
////  * Any use wihtout proper permission is illegal and may lead to legal actions.
////  *
////  *
////  **/
//using System;
//using System.Net.Sockets;
//namespace ln.skyscanner.crawl.service
//{
//    public class TCP : CrawlService
//    {
//        public int[] Ports { get; }

//        public TCP(int[] ports)
//            :base("tcp")
//        {
//            Ports = ports;
//        }

//        public override bool Check(Crawl crawl)
//        {
//            if (!crawl.CheckRequiredOption("ping"))
//                return false;

//            int n = 0;
//            foreach (int port in Ports)
//            {
//                crawl.UpdateState(this, (double)n / (double)Ports.Length);

//                try
//                {
//                    using (TcpClient tcpClient = new TcpClient())
//                    {
//                        IAsyncResult ar = tcpClient.BeginConnect(crawl.Host.PrimaryIP.ToString(), port, null, null);
//                        System.Threading.WaitHandle wh = ar.AsyncWaitHandle;

//                        try
//                        {
//                            if (!ar.AsyncWaitHandle.WaitOne(TimeSpan.FromSeconds(1), false))
//                            {
//                                tcpClient.Close();
//                                throw new TimeoutException();
//                            }

//                            tcpClient.EndConnect(ar);
//                        }
//                        catch (Exception)
//                        {
//                            throw;
//                        }
//                        tcpClient.Close();

//                        crawl.Host.SetHint(String.Format("tcp.{0}", port), true);
//                    }
//                }
//                catch (Exception)
//                {
//                    crawl.Host.SetHint(String.Format("tcp.{0}", port), false);
//                }

//            }
//            return true;
//        }

//        public override bool HostProvidesOption(Crawl crawl,params object[] parameters)
//        {
//            if (parameters.Length == 0)
//                return false;

//            foreach (object oport in parameters)
//            {
//                int port = (int)oport;
//                if (!crawl.Host.GetHint(String.Format("tcp.{0}", port),false))
//                    return false;
//            }
//            return true;
//        }
//    }
//}