/// <summary> /// Is called when AUTH command has completed. /// </summary> /// <param name="op">Asynchronous operation.</param> /// <exception cref="ArgumentNullException">Is raised when <b>op</b> is null reference.</exception> private void AuthCommandCompleted(SMTP_Client.AuthAsyncOP op) { if (op == null) { throw new ArgumentNullException("op"); } try { if (op.Error != null) { Dispose(op.Error); } else { long messageSize = -1; try { messageSize = m_pRelayItem.MessageStream.Length - m_pRelayItem.MessageStream.Position; } catch { // Stream doesn't support seeking. } SMTP_Client.MailFromAsyncOP mailOP = new SMTP_Client.MailFromAsyncOP( this.From, messageSize, IsDsnSupported() ? m_pRelayItem.DSN_Ret : SMTP_DSN_Ret.NotSpecified, IsDsnSupported() ? m_pRelayItem.EnvelopeID : null ); mailOP.CompletedAsync += delegate(object s, EventArgs <SMTP_Client.MailFromAsyncOP> e) { MailCommandCompleted(mailOP); }; if (!m_pSmtpClient.MailFromAsync(mailOP)) { MailCommandCompleted(mailOP); } } } catch (Exception x) { Dispose(x); } }
/// <summary> /// Is called when EHLO/HELO command has completed. /// </summary> /// <param name="op">Asynchronous operation.</param> /// <exception cref="ArgumentNullException">Is raised when <b>op</b> is null reference.</exception> private void EhloCommandCompleted(SMTP_Client.EhloHeloAsyncOP op) { if (op == null) { throw new ArgumentNullException("op"); } try{ if (op.Error != null) { Dispose(op.Error); } else { // Start TLS requested, start switching to secure. if (!m_pSmtpClient.IsSecureConnection && ((m_pServer.UseTlsIfPossible && IsTlsSupported()) || m_pActiveTarget.SslMode == SslMode.TLS)) { SMTP_Client.StartTlsAsyncOP startTlsOP = new SMTP_Client.StartTlsAsyncOP(null); startTlsOP.CompletedAsync += delegate(object s, EventArgs <SMTP_Client.StartTlsAsyncOP> e){ StartTlsCommandCompleted(startTlsOP); }; if (!m_pSmtpClient.StartTlsAsync(startTlsOP)) { StartTlsCommandCompleted(startTlsOP); } } // Authentication requested, start authenticating. else if (!string.IsNullOrEmpty(m_pActiveTarget.UserName)) { SMTP_Client.AuthAsyncOP authOP = new SMTP_Client.AuthAsyncOP(m_pSmtpClient.AuthGetStrongestMethod(m_pActiveTarget.UserName, m_pActiveTarget.Password)); authOP.CompletedAsync += delegate(object s, EventArgs <SMTP_Client.AuthAsyncOP> e){ AuthCommandCompleted(authOP); }; if (!m_pSmtpClient.AuthAsync(authOP)) { AuthCommandCompleted(authOP); } } // Start MAIL command. else { long messageSize = -1; try{ messageSize = m_pRelayItem.MessageStream.Length - m_pRelayItem.MessageStream.Position; } catch { // Stream doesn't support seeking. } SMTP_Client.MailFromAsyncOP mailOP = new SMTP_Client.MailFromAsyncOP( this.From, messageSize, IsDsnSupported() ? m_pRelayItem.DSN_Ret : SMTP_DSN_Ret.NotSpecified, IsDsnSupported() ? m_pRelayItem.EnvelopeID : null ); mailOP.CompletedAsync += delegate(object s, EventArgs <SMTP_Client.MailFromAsyncOP> e){ MailCommandCompleted(mailOP); }; if (!m_pSmtpClient.MailFromAsync(mailOP)) { MailCommandCompleted(mailOP); } } } } catch (Exception x) { Dispose(x); } }