阻止操作被wsacancelblockingcall调用中断

Question

我正在使用Windows服务与使用Udp套接字的设备进行通信。在服务的构造函数中，我有以下代码

public Service1()
    {

        try
        {
            EventLog eventLog1 = new System.Diagnostics.EventLog();

            eventLog1.Source = "Alert Control Service";
            eventLog1.Log = "Application";

            //InitializeComponent();
            //TextBox settings
            //Wire-up the EventHandler

            //Create the UdpClient
            server = new UdpClient(port);

            serverForAdam = new UdpClient(6768);
            //Define a Receive point
            receivePoint = new IPEndPoint(new IPAddress(ip), port);
            IPAddress adam1 = IPAddress.Parse("172.16.2.252");
            adamReceivePoint = new IPEndPoint(adam1, 1025);
            string channel = "";



            //read alarm configuration from database

            RegistryKey baseKey = null;

            if (Environment.Is64BitOperatingSystem)
            {

                 baseKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64);
            }
            else
            {
                 baseKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32);
            }


            RegistryKey myKey = baseKey.OpenSubKey("SOFTWARE\\AlarmConfig", true);

            if (myKey == null) 
            {
                eventLog1.WriteEntry("No AlarmConfig Registry key");
            }

            string regString = (string)myKey.GetValue("database");
            string decryptString = Crypto.DecryptStringAES(regString, "1234");
            SQLConn.ConnectionString = decryptString;
            SQLConn.Open();
        }
        catch (Exception ex) 
        {
            TextWriter tw = new StreamWriter("c:\\error.txt");

            // write a line of text to the file
            tw.WriteLine(ex.Message);

            // close the stream
            tw.Close();
        }

    }

哪一行会写一行： 在error.txt

中调用wsacancelblockingcall中断了阻塞操作

那是什么原因呢。我尝试将服务作为普通的Windows应用程序运行。没关系，消息不存在。请帮忙。