Firstly donot use CSocket. its buggy ... use CAsyncsocket instead.
Yes another notification will be posted into the hidden window of socket and
if u have read it in the previous call u will get 0 returned from
RecieveFrom method.
"mmlab_js" <mmlabjs@discussions.microsoft.com> wrote in message
news:85ABFD6B-C4DF-4681-B4FB-27EF40FADE33@microsoft.com...
I use VSocket derived from CSocket class to create a server-client
application.At client side, I receives data sent from server to client in
the
OnReceive notification funcion:
---
void VSocket::OnReceive(int nErrorCode)
{
unsigned int port,retvalue;
retvalue = ReceiveFrom(s_szData, s_nLength, address, port);
if(retvalue==SOCKET_ERROR)
return;
m_pDlg
(CClientDlg *)m_pDlg)->ProcessData(s_szData,retvalue);
}
---
I know that when there is data in the buffer that can be retrieved, the
winsock framework calls OnReceive function to notify this socket. I call
ReceiveFrom function to receive data and call the PorcessData function to
process it. If the ProcessData function has not finished (I think:so the
OnReceive function hasn't finished), at same time, there is data in the
buffer that can be retrieved. Does the winsock framework still call
OnReceive
function, again???