C#串連伺服器驗證帳號密碼

標籤：

private bool CheckSmtp(string smtpServer, int port,string username,string password)        {            TcpClient tcpClient = new TcpClient(smtpServer, port);            NetworkStream  stream = tcpClient.GetStream();                        if(!WaiteFor(stream,"220")) return false ;            SendCommand(stream, "HELO 211.152.50.xxx\r\n");            if (!WaiteFor(stream, "250")) return false;            SendCommand(stream, "AUTH LOGIN\r\n");            if (!WaiteFor(stream, "334")) return false;            SendCommand(stream,Base64Encode(username)+  "\r\n");            if (!WaiteFor(stream, "334")) return false;            SendCommand(stream, Base64Encode(password) + "\r\n");            if (!WaiteFor(stream, "235")) return false;            return true;        }        private bool  WaiteFor(NetworkStream stream, string strCode)        {            int StreamSize;            byte[] ReadBuffer = new byte[1024];            StreamSize = stream.Read(ReadBuffer, 0, ReadBuffer.Length);            string Returnvalue = Encoding.Default.GetString(ReadBuffer).Substring(0, StreamSize);            Console.WriteLine(Returnvalue);            return Returnvalue.Substring(0, 3).Equals(strCode);        }        private void SendCommand(NetworkStream stream,string strCmd)        {            byte[] WriteBuffer;            WriteBuffer = Encoding.Default.GetBytes(strCmd);            stream.Write(WriteBuffer, 0, WriteBuffer.Length);                    }        private string Base64Encode(string str)        {            byte[] barray;            barray = Encoding.Default.GetBytes(str);            return Convert.ToBase64String(barray);        }

 

C#串連伺服器驗證帳號密碼