C#检查服务器ip和端口是否通畅，是否可访问

 		/// 

        /// 检查服务器和端口是否可以连接
        /// 
        /// 服务器ip
        /// 端口
        /// 
        public static bool CheckConnect(string ipString, int port)
        {
            bool right =false;
            System.Net.Sockets.TcpClient tcpClient = new System.Net.Sockets.TcpClient()
            { SendTimeout = 1000 };
            IPAddress ip = IPAddress.Parse(ipString);
            try
            {              
			    var result = tcpClient.BeginConnect(ip, port, null, null);
			    var back = result.AsyncWaitHandle.WaitOne(2000);
			    right = tcpClient.Connected;
            }
            catch (Exception ex)
            {
                //LogHelpter.AddLog($"连接服务{ipString}:{port}失败，设置的超时时间{tcpClient.SendTimeout}毫秒");
                //连接失败
                return false;
            }           
            tcpClient.Close();
            tcpClient.Dispose();
            return right;
        }