Re: [squid-users] Squid 3.1.1 and flash video scrubbing

The response to the request with the fs query arg is sending back a Content-Range header;

  http://redbot.org/?uri=http%3A%2F%2Fserver437.files.youporn.com%2Fe4%2Fflv%2F426677_Splash.flv%3Fe%3D1273284436%26h%3D47ee1fbcb8d3ab05a06988683c2d94c1%26fs%3D4281434

That's weird.

On 08/04/2010, at 1:32 PM, David Robinson wrote:

> My range_offset_limit and quick_abort_* setting were all default.
>
> I tried setting range_offset_limit -1 - did not fix the problem
>
> quick_abort_min 0 and quick_abort_max 0 - did not fix the problem
>
> quick_abort_min -1 - did not fix the problem
>
>
> The type of urls its having problems with are like these,
>
>
> 1270696241.147 3691 172.16.16.199 TCP_MISS/200 3069898 GET http://server437.files.youporn.com/e4/flv/426677_Splash.flv?e=1273284436&h=47ee1fbcb8d3ab05a06988683c2d94c1 - DIRECT/208.111.181.139 video/x-flv
> 1270696248.438 7293 172.16.16.199 TCP_MISS/200 1442091 GET http://server437.files.youporn.com/e4/flv/426677_Splash.flv?e=1273284436&h=47ee1fbcb8d3ab05a06988683c2d94c1&fs=4281434 - DIRECT/208.111.181.139 video/x-flv
>
> The first one is the initial video player loading the flv. This request works correctly and the video starts to download.
>
> The second URL is when I jump the video player slider ahead of the downloading video, note the fs=4281434 added to the url.
>
> Its this fs= parameter that changes the behavior of the download. You could wget the first url and a flv would download. Wgetting the second url keeps making wget retry even though the website sends back a 200 OK.
>
> I have this all setup in a lab so if you want tcpdumps I can provide them.
>
>
> -----Original Message-----
> From: Amos Jeffries [mailto:squid3_at_treenet.co.nz]
> Sent: Wednesday, April 07, 2010 8:36 PM
> To: squid-users_at_squid-cache.org
> Subject: Re: [squid-users] Squid 3.1.1 and flash video scrubbing
>
> On Wed, 7 Apr 2010 14:41:42 -0500, David Robinson
> <drobinson_at_pavlovmedia.com> wrote:
>> I've started doing field tests of 3.1.1 and a interesting bug has showed
>> up. If you try to jump ahead in a partially loaded video from
> youporn.com
>> or redtube.com the flash player freezes and doesn't continue to download
>> the video. With squid off, you would be able to jump to any part of the
>> video and have it continue playing. I've tested this on 3.1.1, 3.1.0.14
> and
>> 3.1.0.15 and they all have the same behavior. I've also tested this on
>> squid 2.7 and both sites work properly.
>>
>> Can some other users confirm this before I submit a bug report?
>>
>> Using squid 3.1.1 on Debian 5.0.1 2.6.30.10 kernel
>
> What range_offset_limit and quick_abort_* settings are you working with?
>
> Also, are you able to track down any info about what the requests hitting
> Squid are? headers, etc
>
> Amos

--
Mark Nottingham       mnot_at_yahoo-inc.com