FIX: FD_WRITE Reposted After Every Send (186245)
The information in this article applies to:
- Microsoft Windows NT Server 4.0
- Microsoft Windows NT Workstation 4.0
This article was previously published under Q186245 SYMPTOMS
When developing a Winsock application using WSAAsyncSelect or
WSAEventSelect, the FD_WRITE notification is delivered after every call to
send and WSASend on the Windows NT 4.0 platform (up through and including
Service Pack 3), even if the call did not fail with the error code
WSAEWOULDBLOCK. This behavior is not according to the Winsock
specification, and applications should not rely on it.
RESOLUTION
If your application indicates interest in receiving FD_WRITE notification,
using either WSAAsyncSelect or WSAEventSelect, your application should
continue to send data (send and WSASend) until WSAEWOULDBLOCK is returned.
If your applications stops sending data before receiving this error code
and relies on FD_WRITE subsequently being delivered, it will not run
properly across all Windows platforms.
STATUS
This problem was corrected in Windows 2000.
| Modification Type: | Minor | Last Reviewed: | 9/23/2005 |
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| Keywords: | kbHotfixServer kbQFE kbAPI kbBug kbfix kbnetwork kbOSWin2000fix kbWinsock KB186245 |
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