c# - C#线程和类问题

Question

好的，所以我写了以下代码:

class Connection
{
    public static StreamWriter writer;
    public static string SERVER;
    private static int PORT;
    private static string USER;
    private static string NICK;
    private static string CHANNELS;
    private Thread connection;
    private Thread ping;
    public Connection()
    {
        connection = new Thread(new ThreadStart(this.Run));
        ping = new Thread(new ThreadStart(this.Ping));
    }
    public void Start(string server, int port, string ident, string realname, string nick, string channels)
    {
        SERVER = server;
        PORT = port;
        USER = "USER " + ident + " 8 * :" + realname;
        NICK = nick;
        CHANNELS = channels;
        connection.Start();
        ping.Start();
    }
    public void Ping()
    {
        while (true)
        {
            try
            {
                writer.WriteLine("PING :" + SERVER);
                writer.Flush();
                Console.WriteLine("Ping: " + SERVER);
                Thread.Sleep(15000);
            }
            catch (Exception e) { Console.WriteLine(e.ToString()); }
        }
    }
    public void Run()
    {
        NetworkStream stream;
        TcpClient irc;
        string inputLine;
        StreamReader reader;
        try
        {
            irc = new TcpClient(SERVER, PORT);
            stream = irc.GetStream();
            reader = new StreamReader(stream);
            writer = new StreamWriter(stream);
            writer.WriteLine(USER);
            writer.Flush();
            writer.WriteLine("NICK " + NICK);
            writer.Flush();
            Thread.Sleep(5000);
            writer.WriteLine("JOIN " + CHANNELS);
            writer.Flush();

            while (true)
            {
                while ((inputLine = reader.ReadLine()) != null)
                {
                    Console.WriteLine(inputLine);
                }
                writer.Close();
                reader.Close();
                irc.Close();
            }
        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
            Thread.Sleep(5000);
            Run();
        }
    }
}

现在，当我引入第一个服务器时，它可以完美地工作:

    Connection one = new Connection();
    one.Start("irc.serveraddress.com", 6667, "ident", "realname", "nick", "#channel");

它按时对所有服务器执行ping操作。但是，一旦我引入了第二个连接:

Connection two = new Connection();
two.Start("irc.differentserveraddress.com", 6667, "ident", "realname", "nick", "#channel");

它停止对第一台服务器执行ping操作。并仅对第二台服务器执行ping操作，如何使其继续对两台服务器执行ping操作？

Answer 1

public static string SERVER;

由于此字段是静态的，因此您的类的所有实例都指向同一台服务器。创建第二个实例时，它将在该字段中存储第二个服务器的名称，这意味着第一个实例也使用它。