How can i block these requests

[Edho Arief]

On Oct 29, 2012 8:09 PM, "nilesh" <nginx-forum at nginx.us> wrote:
>
> I am getting following access.log: and are significant in number
> RequestMethod=- RequestURI=- HTTPStatus=400  BodyBytesSent=0
> RequestTime=0.000  ResponseTime=-  HTTPReferrer="-" UserAgent="-"
> X-Forwarded-For=- HTTPStatus=400
>
> Does anyone know why i am getting these empty requests, and how to stop
> them.
>

That's modern browser's keepalive

> Posted at Nginx Forum:
http://forum.nginx.org/read.php?2,232321,232321#msg-232321
>
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