CAsyncSocket::DoCallBack(WPARA-M wParam, LPARAM lParam) crash

From:

"dindin" <dindin0497@sina.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Thu, 4 May 2006 08:54:51 +0800

Message-ID:

<#ETPgVxbGHA.3824@TK2MSFTNGP02.phx.gbl>

Hi
I start several threads to handle the incoming clients' connection requests,
there is an strange error occurs: when I debug the codes, I found that in
the thread, everything is OK, but there seems to be that the function "void
PASCAL CAsyncSocket::DoCallBack(WPARAM wParam, LPARAM lParam)"(start from
line 495 in "sockcore.cpp") is doing at the same time! I don't know what's
the usage of this function, but my program always failed in this
function(DoCallBack), in this part:
" pSocket = CAsyncSocket::LookupHandle((SOCKET)wParam, FALSE);
if (pSocket == NULL)
{
  // Must be in the middle of an Accept call
  pSocket = CAsyncSocket::LookupHandle(INVALID_SOCKET, FALSE);
  ASSERT(pSocket != NULL);
  pSocket->m_hSocket = (SOCKET)wParam;
  CAsyncSocket::DetachHandle(INVALID_SOCKET, FALSE);
  CAsyncSocket::AttachHandle(pSocket->m_hSocket, pSocket, FALSE);
}"
at the line: "ASSERT(pSocket != NULL);"(line 512).

I don't know what this error means, hope someone can help me.

Thanx a lot!!!