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Re: Caching downloaded files from dynamic pages

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> I'm working in PC Repair service company. We are of course loading often
> drivers, utilities, updates etc from manufacturer webpages (Acer, Lenovo,
> Fujitsu-Siemens, etc).
>
> Since we are on limited connection and we want to speed up downloads, we
> want to use squid to cache those files. So you need to download each file
> only once. We are building up a server for this so CPU/RAM/DISK won't be a
> problem.
>
> I have had a quick test with Squid and have found it working well.
>
> However, I am having problem with manufacturers, which does not have
> hard-coded http/ftp url, but dynamic pages which are "streaming" file to
> the
> browser.
>
> One problematic is Fujitsu-Siemens.
>
> When I am downloading drivers from Lenovo, they work fine, since they are
> using "normal" urls, for example:
> http://download.boulder.ibm.com/ibmdl/pub/pc/pccbbs/mobiles/1rg807ww.exe
>
> But I am unable to cache downloaded drivers and software from
> Fujitsu-Siemens pages.
>
> For example, when downloading this file:
>
> http://support.fujitsu-siemens.com/Download/ShowDescription.asp?SoftwareGUID
> =50AD6EEC-53F0-4B6E-9C13-53E2CB51D36B&OSID=DD13C337-8EFF-4CFB-A589-72971D7BC
> BCE&Status=True&Component=Flash%20Bios%20for%20AMILO%20Pro%20V8210
>
> It will show up in squid access.log like this:
>
> --
> 1190578174.875   1422 192.168.11.5 TCP_MISS/200 22284 GET
> http://support.fujitsu-siemens.com/Download/ShowDescription.asp? -
> DIRECT/80.70.172.14 text/html
> 1190578176.921    765 192.168.11.5 TCP_MISS/302 646 POST
> http://support.fujitsu-siemens.com/Download/Download.asp -
> DIRECT/80.70.172.14 text/html
> 1190578177.093    172 192.168.11.5 TCP_MISS/302 1090 GET
> http://support.fujitsu-siemens.com/Download/StreamFileToBrowser.asp? -
> DIRECT/80.70.172.14 text/html
> 1190578184.078   6985 192.168.11.5 TCP_MISS/200 1263991 GET
> http://support.fujitsu-siemens.com/download/FileDownload/fileDownload.aspx?
> - DIRECT/80.70.172.14 application/octet-stream
> --
>
> I cannot figure out how to tell Squid to cache that content. :( Is that
> possible at all?
>
> Happy for assistance,
> Alexander
>

This should help a little. Although if they add a UID to the query string
content still may be fetched directly.

http://wiki.squid-cache.org/ConfigExamples/DynamicContent

Amos


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