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Re: DoS with mod_deflate & range requests 		 

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Dirk-Willem.van.Gulik at bbc

Aug 24, 2011, 8:46 AM


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Re: DoS with mod_deflate & range requests [In reply to]
On 24 Aug 2011, at 16:35, Tim Bannister wrote:

> On Tue, Aug 23, 2011, Roy T. Fielding wrote:
>> And the spec says ...
>>
>> When a client requests multiple ranges in one request, the
>> server SHOULD return them in the order that they appeared in the
>> request.
>>
>> My suggestion is to reject any request with overlapping ranges or more
>> than five ranges with a 416, and to send 200 for any request with 4-5
>> ranges. There is simply no need to support random access in HTTP.
>
> Deshpande & Zeng in http://dx.doi.org/10.1145/500141.500197 describe a
> method for "streaming" JPEG 2000 documents over HTTP, using many more than
> 5 ranges in a single request.
> A client that knows about any server-side limit could make multiple
> requests each with a small number of ranges, but discovering that limit
> will add latency and take more code.

Agreed - I've seen many 10's of ranges in a single request for things like clever PDF pagination (or tiny TIFF quicklooks for the pages), clever http fake streaming and clever use of jumping to i-Frames.

I think we just need to sit this out - and accept up to RequestFieldSize limit bytes on that line - and then do a sort & merge overlaps as needed.

And then it is fine.

Dw

Subject User Time
DoS with mod_deflate & range requests sf at sfritsch Aug 23, 2011, 4:08 AM
    RE: DoS with mod_deflate & range requests ruediger.pluem at vodafone Aug 23, 2011, 5:11 AM
    Re: DoS with mod_deflate & range requests lazy404 at gmail Aug 23, 2011, 5:15 AM
    Re: DoS with mod_deflate & range requests lazy404 at gmail Aug 23, 2011, 6:56 AM
    Re: DoS with mod_deflate & range requests isoma at jellybaby Aug 23, 2011, 7:00 AM
    Re: DoS with mod_deflate & range requests wrowe at rowe-clan Aug 23, 2011, 11:18 AM
        Re: DoS with mod_deflate & range requests sf at sfritsch Aug 23, 2011, 11:49 AM
            Re: DoS with mod_deflate & range requests mohameddawaina at gmail Aug 23, 2011, 11:52 AM
            Re: DoS with mod_deflate & range requests wrowe at rowe-clan Aug 23, 2011, 12:32 PM
                Re: DoS with mod_deflate & range requests ames.greg at gmail Aug 23, 2011, 2:00 PM
    Re: DoS with mod_deflate & range requests wrowe at rowe-clan Aug 23, 2011, 2:34 PM
        Re: DoS with mod_deflate & range requests sf at sfritsch Aug 23, 2011, 3:28 PM
            RE: DoS with mod_deflate & range requests ruediger.pluem at vodafone Aug 24, 2011, 1:05 AM
        Re: DoS with mod_deflate & range requests fielding at gbiv Aug 23, 2011, 6:34 PM
            Re: DoS with mod_deflate & range requests sf at sfritsch Aug 23, 2011, 11:38 PM
            Re: DoS with mod_deflate & range requests isoma at jellybaby Aug 24, 2011, 8:35 AM
                Re: DoS with mod_deflate & range requests Dirk-Willem.van.Gulik at bbc Aug 24, 2011, 8:46 AM
                    RE: DoS with mod_deflate & range requests ruediger.pluem at vodafone Aug 24, 2011, 8:55 AM
                Re: DoS with mod_deflate & range requests fielding at gbiv Aug 24, 2011, 1:56 PM
                    Re: DoS with mod_deflate & range requests wrowe at rowe-clan Aug 24, 2011, 2:12 PM
                    Re: DoS with mod_deflate & range requests fielding at gbiv Aug 24, 2011, 2:54 PM
                        Re: DoS with mod_deflate & range requests wrowe at rowe-clan Aug 24, 2011, 4:39 PM
                            Re: DoS with mod_deflate & range requests fielding at gbiv Aug 24, 2011, 4:43 PM
                                Re: DoS with mod_deflate & range requests wrowe at rowe-clan Aug 24, 2011, 4:50 PM
                        Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 6:01 PM
                    Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 5:59 PM
                        Re: DoS with mod_deflate & range requests sf at sfritsch Aug 24, 2011, 11:21 PM
                            RE: DoS with mod_deflate & range requests ruediger.pluem at vodafone Aug 24, 2011, 11:56 PM
            Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 8:41 AM
    Re: DoS with mod_deflate & range requests h.reindl at thelounge Aug 23, 2011, 3:12 PM
    Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 8:48 AM
        RE: DoS with mod_deflate & range requests ruediger.pluem at vodafone Aug 24, 2011, 9:02 AM
    Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 9:01 AM
        RE: DoS with mod_deflate & range requests ruediger.pluem at vodafone Aug 24, 2011, 9:05 AM
    Re: DoS with mod_deflate & range requests wrowe at rowe-clan Aug 24, 2011, 9:22 AM
        Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 9:42 AM
            Re: DoS with mod_deflate & range requests ames.greg at gmail Aug 24, 2011, 12:10 PM
            Re: DoS with mod_deflate & range requests wrowe at rowe-clan Aug 24, 2011, 12:34 PM
                Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 1:12 PM
                    Re: DoS with mod_deflate & range requests wrowe at rowe-clan Aug 24, 2011, 2:01 PM
    Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 9:33 AM
        Re: DoS with mod_deflate & range requests sf at sfritsch Aug 24, 2011, 9:47 AM
            Re: DoS with mod_deflate & range requests isoma at jellybaby Aug 24, 2011, 11:43 AM
                Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 12:13 PM
                    Re: DoS with mod_deflate & range requests isoma at jellybaby Aug 24, 2011, 1:37 PM
    Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 12:19 PM
        Re: DoS with mod_deflate & range requests ames.greg at gmail Aug 24, 2011, 1:39 PM
    Re: DoS with mod_deflate & range requests dirkx at webweaving Aug 24, 2011, 1:45 PM
    Re: DoS with mod_deflate & range requests fielding at gbiv Aug 24, 2011, 1:58 PM
    Re: DoS with mod_deflate & range requests wrowe at rowe-clan Aug 24, 2011, 2:00 PM
        Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 2:08 PM
    Re: DoS with mod_deflate & range requests sf at sfritsch Aug 24, 2011, 2:04 PM
    Re: DoS with mod_deflate & range requests jim at jaguNET Aug 24, 2011, 2:06 PM
        Re: DoS with mod_deflate & range requests wrowe at rowe-clan Aug 24, 2011, 2:19 PM
        Re: DoS with mod_deflate & range requests ames.greg at gmail Aug 24, 2011, 2:32 PM
    Re: DoS with mod_deflate & range requests jim at jaguNET Aug 25, 2011, 4:41 AM

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