The NSPLookupServiceEnd function is called to free the handle after previous calls to NSPLookupServiceBegin and NSPLookupServiceNext.
It is possible to receive a NSPLookupServiceEnd call on another thread while processing a NSPLookupServiceNext. This indicates that the client has canceled the request, and the provider should close the handle and return from the NSPLookupServiceNext call as well, setting the last error to WSA_E_CANCELLED.
int NSPLookupServiceEnd (
HANDLE hLookup
);
In Windows Sockets 2, conflicting error codes are defined for WSAECANCELLED (10103) and WSA_E_CANCELLED (10111). The error code WSAECANCELLED will be removed in a future version and only WSA_E_CANCELLED will remain. Name Space Providers should switch to using the WSA_E_CANCELLED error code as soon as possible to maintain compatibility with the widest possible range of applications.
The function should return NO_ERROR (zero) if the routine succeeds. It should return SOCKET_ERROR (-1) if the routine fails and it must set the appropriate error code using SetLastError.
| WSA_INVALID_HANDLE | The handle is not valid. |
| WSA_NOT_ENOUGH_MEMORY | Not enough free memory available to perform this operation. |
Windows NT: Yes
Windows: Yes
Windows CE: Unsupported.
Header: Declared in ws2spi.h.