/// <summary> /// Is called when SMTP server greeting reading has completed. /// </summary> /// <param name="op">Asynchronous operation.</param> /// <param name="connectCallback">Callback to be called to complete connect operation.</param> private void ReadServerGreetingCompleted(ReadResponseAsyncOP op,CompleteConnectCallback connectCallback) { Exception error = null; try{ // Greeting reading failed, we are done. if(op.Error != null){ error = op.Error; } // Greeting reading succeded. else{ /* RFC 5321 4.2. Greeting = ( "220 " (Domain / address-literal) [ SP textstring ] CRLF ) / ( "220-" (Domain / address-literal) [ SP textstring ] CRLF *( "220-" [ textstring ] CRLF ) "220" [ SP textstring ] CRLF ) */ // SMTP server accepted connection, get greeting text. if(op.ReplyLines[0].ReplyCode == 220){ StringBuilder greetingText = new StringBuilder(); foreach(SMTP_t_ReplyLine line in op.ReplyLines){ greetingText.AppendLine(line.Text); } m_GreetingText = greetingText.ToString(); m_pEsmtpFeatures = new List<string>(); m_pRecipients = new List<string>(); } // SMTP server rejected connection. else{ error = new SMTP_ClientException(op.ReplyLines); } } } catch(Exception x){ error = x; } // Complete TCP_Client connect operation. connectCallback(error); }
/// <summary> /// Is called when SMTP server response reading has completed. /// </summary> /// <param name="op">Asynchronous operation.</param> private void AuthReadResponseCompleted(ReadResponseAsyncOP op) { try{ // Continue authenticating. if(op.ReplyLines[0].ReplyCode == 334){ // 334 base64Data, we need to decode it. byte[] serverResponse = Convert.FromBase64String(op.ReplyLines[0].Text); byte[] clientResponse = m_pSASL.Continue(serverResponse); // We need just send SASL returned auth-response as base64. byte[] buffer = Encoding.UTF8.GetBytes(Convert.ToBase64String(clientResponse) + "\r\n"); // Log m_pSmtpClient.LogAddWrite(buffer.Length,Convert.ToBase64String(clientResponse)); // Start auth-data sending. m_pSmtpClient.TcpStream.BeginWrite(buffer,0,buffer.Length,this.AuthCommandSendingCompleted,null); } // Authentication suceeded. else if(op.ReplyLines[0].ReplyCode == 235){ m_pSmtpClient.m_pAuthdUserIdentity = new GenericIdentity(m_pSASL.UserName,m_pSASL.Name); SetState(AsyncOP_State.Completed); } // Authentication rejected. else{ m_pException = new SMTP_ClientException(op.ReplyLines); SetState(AsyncOP_State.Completed); } } catch(Exception x){ m_pException = x; m_pSmtpClient.LogAddException("Exception: " + x.Message,x); SetState(AsyncOP_State.Completed); } }