Option flags (Winhttp.h) - Win32 appsThe following option flags are supported by WinHttpQueryOption and WinHttpSetOption. WINHTTP_OPTION_ASSURED_NON_BLOCKING_CALLBACKS The default is FALSE. If set to TRUE, WinHTTP doesn't guarantee progress if status callbacks are blocked by the client application. The client application must take special care to perform minimal operations within the callback without blocking, returning as quickly as
