C＃创建SSH隧道连接远程MySQL

Question

所以我一直在尝试使用SSH隧道连接到远程服务器，以便到达另一端的MySQL数据库。似乎SSH部分最终正在进行我的竞标，但尝试连接到MySQL会引发＆＃34;从流中读取失败。 ---＆GT; System.IO.EndOfStreamException＆＃34;

整条信息：

MySql.Data.MySqlClient.MySqlException (0x80004005): Reading from the stream has failed. ---> System.IO.EndOfStreamException: Failed to read past end of stream.
   vid MySql.Data.MySqlClient.MySqlStream.ReadFully(Stream stream, Byte[] buffer, Int32 offset, Int32 count)
   vid MySql.Data.MySqlClient.MySqlStream.LoadPacket()
   vid MySql.Data.MySqlClient.MySqlStream.LoadPacket()
   vid MySql.Data.MySqlClient.MySqlStream.ReadPacket()
   vid MySql.Data.MySqlClient.NativeDriver.Open()
   vid MySql.Data.MySqlClient.Driver.Open()
   vid MySql.Data.MySqlClient.Driver.Create(MySqlConnectionStringBuilder settings)
   vid MySql.Data.MySqlClient.MySqlPool.CreateNewPooledConnection()
   vid MySql.Data.MySqlClient.MySqlPool.GetPooledConnection()
   vid MySql.Data.MySqlClient.MySqlPool.TryToGetDriver()
   vid MySql.Data.MySqlClient.MySqlPool.GetConnection()
   vid MySql.Data.MySqlClient.MySqlConnection.Open()
   vid Wrapper_Steleco.Databas.Database.<constructDatabase>d__11.MoveNext()

SSH.cp：

public async Task connectSSH()
        {
            try
            {
                TcpClient client = new TcpClient("localhost", 3307);
                Console.WriteLine("Port is open!");
            }
            catch (Exception ex)
            {
                Console.WriteLine("Error pinging host: 'localhost:3307'");
            }
            try
            {
                await Task.Run(() =>
                {
                    Console.WriteLine("About to execute Plink.");
                    ProcessStartInfo plink = new ProcessStartInfo()
                    {
                        FileName = @".\plink.exe",
                        Arguments = " -ssh -L 3307:127.0.0.1:3306 user@host -pw password -v",
                        UseShellExecute = false,
                        RedirectStandardInput = true,
                        RedirectStandardOutput = true,
                        CreateNoWindow = false
                    };
                    Process process = Process.Start(plink);
                    Console.WriteLine("Executed plink...");

                    process.StandardInput.WriteLine("logout");
                    process.Kill();
                });
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }
        }

最后，MySQL：

 public async void constructDatabase() // Konstruktor
        {
            SSH ssh = new SSH();
            try
            {
                var task = Task.Run(() => ssh.connectSSH());
                Console.WriteLine("Task-status: " + task.Status);
                try
                {
                    task.Wait();
                    using (task)
                    {
                        try
                        {
                            Console.WriteLine("Task-status: " + task.Status);
                            Console.WriteLine("Database-connection continues.");
                            host = "127.0.0.1";
                            port = "3307";
                            dbName = "database";
                            uid = "user";
                            password = "password";
                            conString = "Server=" + host + "; Port=" + port + "; Database=" + dbName + "; Uid=" + uid + "; Pwd=" + password + "";
                            Console.WriteLine(conString);
                            conn = new MySqlConnection(conString);
                            Console.WriteLine("MySQL-state: " + conn.State.ToString());
                            conn.Open();
                            Console.WriteLine("MySQL-state: " + conn.State.ToString());
                        }
                        catch (MySqlException e)
                        {
                            Console.WriteLine(e);
                        }
                        catch (EndOfStreamException ex)
                        {
                            Console.WriteLine("Stream exception caught: " + ex.Message.ToString());


                        }
                        finally
                        {
                            if (conn != null)
                            {
                                conn.Close();
                                conn.Dispose();
                            }
                        }
                    }
                }
                catch (Exception e)
                {
                    Console.WriteLine(e);
                }

            }
            catch (MySqlException ex)
            {
                eventLog = new EventLog();
                eventLog.getError(EventLog.Errors.DatabaseConnectionError, 0, ex.ToString());
                connectionError = true;
            }

        }

我对C＃很陌生，多年来一直没有使用它，这是我第一次尝试通过SSH隧道建立这样的远程连接。我一直在考虑是否使用了错误的方法，或者我只是使用了正确的方法。显然有一些我没有正确做的事情，我已经坚持了三天，在Google和StackOverflow上逐页浏览，但没有找到解决这一特定问题的答案。

经过一番研究并获得plink窗口显示;似乎它拒绝连接，原因不明。

Local port 3307 forwarding to 127.0.0.1:3306
Opening connection to 127.0.0.1:3306 for forwarding from 127.0.0.1:52566
Forward connection refused by server: Connection failed [Connection refused]