Cocket中的Socket编程和执行telnet命令的问题

Question

对不起！如果问题是无关紧要的。我有一台机器通过我试图通过c＃中的套接字编程使用IP地址和端口号连接。在连接后我试图传递一些机器特定的凭证，如用户名/密码，然后尝试执行一些命令将代码保存到机器中。每件事情都很顺利，我没有得到任何类型的异常或错误，但在验证机器中的代码时我没有得到那个。 所以我的问题是为什么呢？

这是我在c＃中的代码。

TcpClient client = new TcpClient();
textfileSaveLocation = "D:/Response.txt";

try
{
    using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))
    {
        writer.WriteLine("Before Connection !");
    }

    client.Connect(new IPEndPoint(IPAddress.Parse(ip), intport));

    Thread.Sleep(5000);

    using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))
    {
        writer.WriteLine("Connected To Machine !");       
    }
    catch (Exception ex)
    {
        // Log the error here.
        client.Close();

        using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))
        {
            writer.WriteLine("Connection Error !");
        }

        continue;
    }

    try
    {
        using (NetworkStream stream = client.GetStream())
        {
            byte[] username = Encoding.ASCII.GetBytes(user + "\r\n");
            stream.Write(username, 0, username.Length);
            Thread.Sleep(5000);
            using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))
            {
                writer.WriteLine("UserName Enetered !");
            }
            byte[] password = Encoding.ASCII.GetBytes(pass + "\r\n");
            stream.Write(password, 0, password.Length);
            Thread.Sleep(5000);
            using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))
            {
                writer.WriteLine("Password Passed !");
            }

            byte[] terminal = Encoding.ASCII.GetBytes(port2 + "\r\n");
            stream.Write(terminal, 0, terminal.Length);
            Thread.Sleep(5000);
            using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))
            {
                writer.WriteLine("Terminal Value Entered !");
            }

            string ch = "change autho-code ";

            if (acc != "0")
            {
                ch = "change authorization-code " + acc + "\r\n";
                byte[] chAuth = Encoding.ASCII.GetBytes(ch);
                stream.Write(chAuth, 0, chAuth.Length);

                Thread.Sleep(5000);

                using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))
                {
                    writer.WriteLine("Change Authcode Request not Zero !");
                }

                byte[] aCodeServ = Encoding.ASCII.GetBytes(acode + "\t");
                stream.Write(aCodeServ, 0, aCodeServ.Length);

                Thread.Sleep(5000);

                using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))
                {
                    writer.WriteLine("Authcode Configured not Zero !");
                }
            }
            else
            {
                byte[] aChServ = Encoding.ASCII.GetBytes(ch + "\r\n");
                stream.Write(aChServ, 0, aChServ.Length);

                Thread.Sleep(5000);

                using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))
                {
                    writer.WriteLine("New Authcode Request !");
                }
                byte[] aSpace = Encoding.ASCII.GetBytes("      " + "\t" + " ");
                stream.Write(aSpace, 0, aSpace.Length);

                Thread.Sleep(5000);

                using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))              {
                    writer.WriteLine("Authcode Configured !");
                }
            }
        }
        client.Close();

        using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))
        {
            writer.WriteLine("Connection Out !");
        }
    }
    catch (Exception ex)
    {
        // Log the error here.
        client.Close();

        using (StreamWriter writer = new StreamWriter(textfileSaveLocation, true))
        {
            writer.WriteLine("Executing Command Error !");
        }
    }
}

在上面的程序中，我注意到我没有添加NetworkStream.Close()。这是为什么我的代码没有在机器或其他东西中配置的问题。

请帮帮我。 提前谢谢。