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Subject:	Re: setup 2.878 only processes one site
To:	cygwin AT cygwin DOT com
References:	<dbb0d48f-e602-f202-6573-2d900728d091 AT acm DOT org> <7d6dc5d3-e368-a513-d04b-58410da7152b AT dronecode DOT org DOT uk> <f2f46c8a-b634-aba4-c852-1d389be7a5dd AT acm DOT org> <157e3495-e031-0637-faf9-1d0813ece56d AT dronecode DOT org DOT uk> <fbf93978-1431-8994-d137-090e16e4c71f AT acm DOT org> <4e36141b-c287-35ea-39e0-227e4353c25c AT dronecode DOT org DOT uk> <e2d5badd-6eac-bd13-77b3-c66cbd40d149 AT acm DOT org>
Cc:	David Rothenberger <daveroth AT acm DOT org>
From:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Message-ID:	<b2ced499-a824-8d87-e483-70170bc21f36@dronecode.org.uk>
Date:	Thu, 18 May 2017 22:15:54 +0100
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In-Reply-To:	<e2d5badd-6eac-bd13-77b3-c66cbd40d149@acm.org>

On 18/05/2017 18:04, David Rothenberger wrote:
> Jon Turney wrote:
>> On 17/05/2017 21:45, David Rothenberger wrote:
>>> Jon Turney wrote:
>>>> On 17/05/2017 18:06, David Rothenberger wrote:
>>>>> Jon Turney wrote:
>>>>>> On 17/05/17 00:14, David Rothenberger wrote:
>>>>>>> When I use the new Direct Connection option in setup 2.878, it
>>>>>>> appears
>>>>>>> that setup only downloads the setup.xz file from one of the three
>>>>>>> sites
>>>>>>> I have selected.
>>>>>>
>>>>>> Something which might give this impression is that setup will now
>>>>>> cache setup.xz, and only download it if it has changed.
>>>>>
>>>>> I think you nailed it. I tried again this morning and the first time I
>>>>> ran setup, it did contact our local site, but it did not on subsequent
>>>>> runs (even to see if the file has changed). I then modified our web
>>>>
>>>> This would be very bad, if true.  Are you sure that we aren't
>>>> contacting the server at all? (such requests might not be logged in
>>>> some configurations)
>>>
>>> Yes, I'm sure. I verified our web server logs requests with the
>>> If-Modified-Since header. Also, I used wireshark to confirm there was no
>>> request at all to our web server.
>>
>> Hmm... In my testing I saw requests with If-Modified-Since: and
>> If-None-Match: headers being sent and a 304 Not Modified response
>> being sent.
>>
>> I added INTERNET_FLAG_RESYNCHRONIZE, which looks like it might be
>> needed to do the right thing if the server doesn't send an ETag
>> header, and made another build.
>
> My server does send the ETag header. I'm using Apache 2.4.

Well, I still don't know what's going on, then. :)

fwiw, I did some testing with an apache configured with 'FileETag None' 
and saw the the behaviour you described (doesn't even contact the 
server), so this flag is definitely needed.

>> https://cygwin.com/setup/setup-2.878-4-g582a35.x86.exe
>> https://cygwin.com/setup/setup-2.878-4-g582a35.x86_64.exe
>>
>> Perhaps you could try that and see if it improves things?
>
> The problem is indeed fixed with these builds. Thanks!

Great.  Thanks for testing.  I'll do a 2.879 with those changes.

And thank you for drawing attention to this problem.  I looks like it's 
probably existed since forever in ""Use Internet Explorer Proxy 
Settings" mode.


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