// --------------------------- constructor -----------------------
public Pop3Message(
long position, long size, Socket client,
SocketExchange InEx)
{
m_inboxPosition = position;
m_messageSize = size;
mSocket = client;
mSockEx = InEx;
// object used to receive the mail message in a background thread.
mSockThreadState = new Pop3StateObject( );
mSockThreadState.SockEx = InEx;
mSockThreadState.sb = new StringBuilder( );
// load email ...
LoadEmail(InEx);
// get body (if it exists) ...
IEnumerator multipartEnumerator = MultipartEnumerator;
while (multipartEnumerator.MoveNext())
{
Pop3Component multipart = (Pop3Component)
multipartEnumerator.Current;
if (multipart.IsBody)
{
m_body = multipart.Data;
break;
}
}
}
// ---------------------- LoadEmail ---------------------------
private void LoadEmail(SocketExchange InEx)
{
// tell the server we want to read the message.
InEx.Send("retr " + m_inboxPosition + PopConstants.CrLf);
// receive in a background thread.
StartReceive(InEx);
InEx.LoadResponseMessage(mSockThreadState.sb.ToString( ));
// parse email ...
string[] lines = InEx.ResponseMessage.Split(Chars.CharArrayChars('\r'));
for (int ix = 0; ix < lines.Length; ++ix)
{
InEx.Logger.AddMessage(NetworkRole.Server, lines[ix]);
}
ParseEmail(lines);
// remove reading pop3State ...
mSockThreadState = null;
}
// ------------------------- ReceiveCallback -------------------------
// receive MailMessage in background thread.
private void ReceiveCallback(IAsyncResult InResult)
{
try
{
// Retrieve the state object and the client socket
// from the asynchronous state object.
Pop3StateObject sockThreadState =
(Pop3StateObject)InResult.AsyncState;
SocketExchange sockEx = sockThreadState.SockEx;
Socket client = sockEx.ConnectedSocket;
SecureSocket secureSock = sockEx.ConnectedSecureSocket;
bool InlRcv = true;
while (true)
{
// receive from the socket.
int ReadCx;
if (InlRcv == true)
{
if (client != null)
{
ReadCx = client.EndReceive(InResult);
}
else
{
ReadCx = secureSock.EndReceive(InResult);
}
}
else
{
if (client != null)
{
ReadCx = client.Receive(
sockThreadState.buffer, 0, Pop3StateObject.BufferSize, SocketFlags.None);
}
else
{
ReadCx = secureSock.Receive(
sockThreadState.buffer, 0, Pop3StateObject.BufferSize, SocketFlags.None);
}
}
InlRcv = false;
// did not receive anything. probably should leave.
if (ReadCx == 0)
{
break;
}
// There might be more data,
// so store the data received so far.
string block = Encoding.ASCII.GetString(sockThreadState.buffer, 0, ReadCx);
sockThreadState.sb.Append(block);
// is this the end of the message
if (Stringer.Tail(sockThreadState.sb, 5) == "\r\n.\r\n")
{
break;
}
}
}
catch (Exception e)
{
throw new
Pop3ReceiveException(
"ReceiveCallback error" +
e.ToString( ));
}
finally
{
m_manualEvent.Set( );
}
}
