Function InetRead sometimes doesn't work

[poiuylkjhg]

Can anyone explain why InetRead gives the empty string for some sites?

HttpSetUserAgent("Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; Avant Browser; InfoPath.1; .NET CLR 2.0.50727; .NET CLR 1.1.4322; .NET4.0C; .NET4.0E; Avant Browser)")
Opt("TCPTimeout",20000)
HttpSetProxy(1)

;this works
$ccc=BinaryToString(InetRead("https://google.ru",1),4)
MsgBox (0,"title",$ccc)

;this doesn't work ( gives the empty string )
$ccc=BinaryToString(InetRead("https://ya.ru",1),4)
MsgBox (0,"title",$ccc)