internal unsafe UrlGroup(RequestQueue requestQueue, UrlPrefix url) { ulong urlGroupId = 0; var statusCode = HttpApi.HttpFindUrlGroupId( url.FullPrefix, requestQueue.Handle, &urlGroupId); if (statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS) { throw new HttpSysException((int)statusCode); } Debug.Assert(urlGroupId != 0, "Invalid id returned by HttpCreateUrlGroup"); Id = urlGroupId; }