/// <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);
}
}