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Re: "store-stale" sending original "expires" header may be breaking windows update?

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On 7/12/2016 4:08 a.m., Heiler Bemerguy wrote:
> 
> Hi folks, what do you think about it?
> 
> refresh_pattern -i
> (microsoft|windowsupdate)\.com.*\.(cab|exe|ms[iup]|dat|zip|[ap]sf|appx(bundle)?|esd|crl)$
> 483840 100% 483840 override-expire ignore-reload ignore-no-store
> store-stale
> 
> 
> A request sent to squid:
> 
> GET
> http://download.windowsupdate.com/d/msdownload/update/others/2016/11/23135907_62c440827e79f4ebcb1babac054468802f1be1cd.cab
> HTTP/1.1
> Accept: */*
> User-Agent: Windows-Update-Agent
> Proxy-Connection: Keep-Alive
> Host: download.windowsupdate.com
> 
> 
> squid reply to the user:
> 
> HTTP/1.1 200 OK
> *Expires: Thu, 17 Nov 2016 18:00:01 GMT*
> MSRegion: Latam
> Cache-Control: public,max-age=172800
> Content-Length: 0
> Content-Type: application/vnd.ms-cab-compressed
> Last-Modified: Mon, 14 Nov 2016 16:57:44 GMT
> Accept-Ranges: bytes
> ETag: "0b4d737983ed21:0"
> Server: Microsoft-IIS/8.5
> X-Powered-By: ASP.NET
> X-CID: 7
> X-CCC: US
> X-MSEdge-Ref: Ref A: A41379B47DAB430595652F948ADA374C Ref B:
> A3C4FE3E5EFF7E01F424A3DC08B40AF5 Ref C: Tue Dec  6 06:44:10 2016 PST
> *Date: Tue, 06 Dec 2016 14:44:10 GMT*
> X-Cache: MISS from proxycache2
> Age: 60080
> X-Cache: HIT from proxy
> Via: 1.1 proxycache2 (squid), 1.1 proxy (squid)
> Connection: keep-alive
> 
> So.. it's sending a stale object, but it's saying to the user that the
> object is expired...  is it right? I think windows update is aborting

Worse than that.

-> Last-Modified + Age is not even close to the Date value.

-> The CC:max-age=172800 says it expires at 16 Nov 2016 16:57:44 GMT.

-> Content-Length says it is 0 bytes of data. Yet there are non-zero
amount of object being transferred in your log records.

Something is getting very screwed up in those headers.

What versions of Squid are those two proxies?

Amos

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