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From Mark Thomas <>
Subject Re: Connection draining when upload to large
Date Fri, 11 Feb 2011 09:37:56 GMT
On 10/02/2011 21:32, Christopher Schultz wrote:
> Rainer,
> On 2/10/2011 8:04 AM, Rainer Jung wrote:
>> It seems there's still no server-side prevention against huge uploads
>> possible. The upload is not put into memory, but the thread is only
>> freed once the whole request body is read. Shouldn't Tomcat ignore the
>> rest of data and close the connection in this case?
> +1
> I've always wondered why Tomcat drains the input stream instead of just
> closing it.
> I could write a client that does a PUT or POST with no Content-Length
> and just send 1 byte every second or so and tie up a request thread
> indefinitely. That seems dangerous.

That is a different issue. You are describing a slowloris attack. The
simple mitigation for that is to use the NIO connector.


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