public void StartTls(string host)
{
SetupCommandTimeout();
if (!SupportedCommands.Contains(SmtpCommands.STARTTLS))
{
throw new Exception("Not supported");
}
var reply = SendCommand(SmtpCommands.STARTTLS);
if (reply.Code != SmtpReplyCode.ServiceReady)
{
throw new Exception();
}
var tls = _tlsProvider.AuthenticateAsClient(_stream, host);
_stream = tls;
_reader = new SmtpControlStreamReader(tls);
}
public void Connect(string host, int port)
{
if (Proxy != null)
{
Proxy.ConnectTimeout = ConnectTimeout;
Proxy.ReadTimeout = ReadTimeout;
Proxy.WriteTimeout = WriteTimeout;
_tcpClient = Proxy.CreateConnection(host, port);
}
else
{
_tcpClient = new TcpClient(AddressFamily.InterNetwork);
_tcpClient.Connect(host, port);//
}
_stream = _tcpClient.GetStream();
if (ReadTimeout >= 0)
{
_tcpClient.ReceiveTimeout = ReadTimeout;
}
if (WriteTimeout >= 0)
{
_tcpClient.SendTimeout = WriteTimeout;
}
_reader = new SmtpControlStreamReader(_stream);
SetupCommandTimeout();
var greetingReply = _reader.ReadServerReply();
if (greetingReply.Code != SmtpReplyCode.ServiceReady)
{
throw new Exception();
}
Greeting = greetingReply.Message;
}