BitServer.SMTPconnection.SMTPconnection C# (CSharp) Method

        public SMTPconnection(TcpClient cli)
        {
            dataMode = false;
            c = cli;
            lastLine = new byte[10240];
            buffer = new byte[10240];
            c.Client.BeginReceive(buffer, 0, buffer.Length, SocketFlags.None, new AsyncCallback(dataRec), null);
            t = new Thread(new ThreadStart(check));
            t.IsBackground = true;
            t.Start();
        }