/// <summary>
/// Is called when FillMessagesAsync method has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
private void FillMessagesCompleted(FillMessagesAsyncOP op)
{
try{
// Operation failed.
if(op.Error != null){
m_pException = op.Error ;
m_pPop3Client.LogAddException("Exception: " + op.Error.Message,op.Error);
SetState(AsyncOP_State.Completed);
}
// Operation succeeded.
else{
m_pPop3Client.m_pAuthdUserIdentity = new GenericIdentity(m_pSASL.UserName,m_pSASL.Name);
SetState(AsyncOP_State.Completed);
}
}
catch(Exception x){
m_pException = x;
m_pPop3Client.LogAddException("Exception: " + x.Message,x);
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}
/// <summary>
/// Starts filling mailbox messages info.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
/// <returns>Returns true if aynchronous operation is pending (The <see cref="FillMessagesAsyncOP.CompletedAsync"/> event is raised upon completion of the operation).
/// Returns false if operation completed synchronously.</returns>
/// <exception cref="ObjectDisposedException">Is raised when this object is disposed and and this method is accessed.</exception>
/// <exception cref="InvalidOperationException">Is raised when POP3 client is not in valid state. For example 'not connected'.</exception>
/// <exception cref="ArgumentNullException">Is raised when <b>op</b> is null reference.</exception>
private bool FillMessagesAsync(FillMessagesAsyncOP op)
{
if(this.IsDisposed){
throw new ObjectDisposedException(this.GetType().Name);
}
if(!this.IsConnected){
throw new InvalidOperationException("You must connect first.");
}
if(op == null){
throw new ArgumentNullException("op");
}
if(op.State != AsyncOP_State.WaitingForStart){
throw new ArgumentException("Invalid argument 'op' state, 'op' must be in 'AsyncOP_State.WaitingForStart' state.","op");
}
return op.Start(this);
}
/// <summary>
/// Is called when POP3 server response reading has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
private void AuthReadResponseCompleted(SmartStream.ReadLineAsyncOP op)
{
try{
// Operation failed.
if(op.Error != null){
m_pException = op.Error;
m_pPop3Client.LogAddException("Exception: " + op.Error.Message,op.Error);
SetState(AsyncOP_State.Completed);
}
// Operation succeeded.
else{
// Log
m_pPop3Client.LogAddRead(op.BytesInBuffer,op.LineUtf8);
// Authentication succeeded.
if(string.Equals(op.LineUtf8.Split(new char[]{' '},2)[0],"+OK",StringComparison.InvariantCultureIgnoreCase)){
// Start filling messages info.
POP3_Client.FillMessagesAsyncOP fillOP = new FillMessagesAsyncOP();
fillOP.CompletedAsync += delegate(object sender,EventArgs<FillMessagesAsyncOP> e){
FillMessagesCompleted(fillOP);
};
if(!m_pPop3Client.FillMessagesAsync(fillOP)){
FillMessagesCompleted(fillOP);
}
}
// Continue authenticating.
else if(op.LineUtf8.StartsWith("+")){
// + base64Data, we need to decode it.
byte[] serverResponse = Convert.FromBase64String(op.LineUtf8.Split(new char[]{' '},2)[1]);
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_pPop3Client.LogAddWrite(buffer.Length,Convert.ToBase64String(clientResponse));
// Start auth-data sending.
m_pPop3Client.TcpStream.BeginWrite(buffer,0,buffer.Length,this.AuthCommandSendingCompleted,null);
}
// Authentication rejected.
else{
m_pException = new POP3_ClientException(op.LineUtf8);
SetState(AsyncOP_State.Completed);
}
}
}
catch(Exception x){
m_pException = x;
m_pPop3Client.LogAddException("Exception: " + x.Message,x);
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}
/// <summary>
/// Is called when POP3 server PASS response reading has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
private void PassReadResponseCompleted(SmartStream.ReadLineAsyncOP op)
{
try{
// Operation failed.
if(op.Error != null){
m_pException = op.Error;
m_pPop3Client.LogAddException("Exception: " + op.Error.Message,op.Error);
SetState(AsyncOP_State.Completed);
}
// Operation succeeded.
else{
// Log
m_pPop3Client.LogAddRead(op.BytesInBuffer,op.LineUtf8);
// Server returned success response.
if(string.Equals(op.LineUtf8.Split(new char[]{' '},2)[0],"+OK",StringComparison.InvariantCultureIgnoreCase)){
// Start filling messages info.
POP3_Client.FillMessagesAsyncOP fillOP = new FillMessagesAsyncOP();
fillOP.CompletedAsync += delegate(object sender,EventArgs<FillMessagesAsyncOP> e){
FillMessagesCompleted(fillOP);
};
if(!m_pPop3Client.FillMessagesAsync(fillOP)){
FillMessagesCompleted(fillOP);
}
}
// Server returned error response.
else{
m_pException = new POP3_ClientException(op.LineUtf8);
SetState(AsyncOP_State.Completed);
}
}
}
catch(Exception x){
m_pException = x;
m_pPop3Client.LogAddException("Exception: " + x.Message,x);
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}
