C#创建SSH隧道以连接到远程MySQL

因此，我一直在尝试使用SSH隧道连接到远程服务器，以到达另一端的MySQL数据库。看起来SSH部分终于完成了我的任务，但是尝试连接到MySQL会抛出“从流读取失败。-->System.IO.EndOfStreamException”

全部信息：

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()

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;
            }

        }

我是C#的新手，多年没有使用过它，这是我第一次尝试通过SSH隧道建立这样的远程连接。我一直在思考，是我使用了错误的方法，还是我只是使用了错误的方法。显然有些事情我做得不对，我已经坚持了三天，在Google和StackOverflow上一页又一页地浏览，没有找到解决这个问题的答案

经过一些研究，并得到了普林克窗口显示；它似乎拒绝连接，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]

---

今天，我遇到了与MySql相同的问题，错误是1042（无法连接到任何指定的MySql主机）。我可以通过SSH隧道和MySql连接中设置的A5SQL连接。但在C#中做不到：（）。

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]