Workaround For Wininet Dns Not Refreshing When Using Kb 263558
- 14 Nov 2008
If you are making Synchronous calls in WinInet, the DNS timeouts don’t appear to work when set (see: http://support.microsoft.com/kb/263558 ).
Async calls do however work correctly.
One workaround is to simply restart the application using WinInet.
I found a code workaround for the issue as well. Simply open and close the handle you get with the InternetOpen call then open it again:
hOpen= ::InternetOpen(…..);
InternetCloseHandle(hOpen);
hOpen= ::InternetOpen(…..);
// now use handle…
The performance impact will be very low.
-Jeff
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