MailKit Socks5 Fail

Program.cs

using System;
using System.Net;
using System.Net.Sockets;
using System.IO;
using MailKit.Net.Imap;
using MailKit;

namespace SocksTest
{
    internal class Program
    {
        
        public static void Main(string[] args)
        {               
            Console.WriteLine("Working *");
            
            var socksClient = new TcpClient();
            socksClient.Connect("127.0.0.1", 1080);
            
            var bw = new BinaryWriter(socksClient.GetStream());
            var br = new BinaryReader(socksClient.GetStream());
            
            //Tell the Socks5 to Connect to the IMAP:
            
            //Get the IP of the IMAP
            var ip = Dns.GetHostAddresses("mx.freenet.de")[0];
            
            //Me: Hello
            
            bw.Write(new byte[] {0x05, 0x01, 0x00});
            
            //Server: Hello
            
            Print(br.ReadBytes(2));
            
            //Me: Connect to the IMAP on port 993
            
            byte[] data =  {0x05, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, getPortBytes(993)[0], getPortBytes(993)[1]};
            
            //Fill the IP in the DATA
            
            for (int i = 0; i < 4; i++)
            {
                data[i + 4] = ip.GetAddressBytes()[i];
            }
            
            bw.Write(data);
            
            //Server: Connection rdy
            
            Print(br.ReadBytes(10));
            
            //Rdy
            
            
            //Give the Socket to the IMAP client
            getMails(socksClient.Client);

        }

        public static void Print(byte[] data)
        {
            foreach (var b in data)
            {
                Console.WriteLine(b);
            }
        }

        public static Byte[] getPortBytes(int port)
        {
            byte high = (byte)(float) (port / 256);
            byte low = (byte) (port % 256);
            
            return new byte[] {high,low};
            
            //https://de.wikipedia.org/wiki/SOCKS
            
        }

        public static void getMails(Socket soc)
        {
            using (var client = new ImapClient ()) {
                // For demo-purposes, accept all SSL certificates
                client.ServerCertificateValidationCallback = (s,c,h,e) => true;

                //client.Connect(socksClient.Client, "mx.freenet.de", 933);
                client.Connect(soc, "mx.freenet.de");

                // Note: since we don't have an OAuth2 token, disable
                // the XOAUTH2 authentication mechanism.
                client.AuthenticationMechanisms.Remove ("XOAUTH2");

                client.Authenticate ("fipso@freenet.de", "<HIDDEN>");

                // The Inbox folder is always available on all IMAP servers...
                var inbox = client.Inbox;
                inbox.Open (FolderAccess.ReadOnly);

                Console.WriteLine ("Total messages: {0}", inbox.Count);
                Console.WriteLine ("Recent messages: {0}", inbox.Recent);

                client.Disconnect (true);
            }
        }
    }
}