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Re: 'Global' NSURLCache?
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Re: 'Global' NSURLCache?


  • Subject: Re: 'Global' NSURLCache?
  • From: email@hidden
  • Date: Wed, 29 Nov 2017 16:44:14 -0500

> On Nov 29, 2017, at 3:39 AM, Quinn The Eskimo! <email@hidden> wrote:
>
> `cres2` comes back as non-nil, even though `req2` has a different
> `User-Agent` header than the `req1` that was used to store the response. So,
> are you sure that the `User-Agent` string is the problem here?

Hmm. I've setup the response with the same fields as your (very helpful)
example, however I still only get a cached response when I omit the User-Agent
header.

I'm not sure if this is relevant, but besides the User-Agent header I also add
a Authorization header in the request - this is basically static for every
request.

The only other difference from your example is that in my case I'm (obviously)
not using a shared NSURLCache within the same process, but given that it seems
to work for me when I omit the User-Agent header, that's probably not relevant.

I'll keep playing with the headers/request and see if I can narrow down when it
stops working, and perhaps try some of your other suggestions, on which I'll
note:

> The most obvious solution here is to have both the app and the helper set the
> same `User-Agent` string.  That seems reasonable given that one is embedded
> within the other.  Why not do that?

I thought of that, but my other worry would be the case where a new version of
the application is available - as I mentioned the header includes the version
number, so I worry that future versions wouldn't pick up on past cached
responses due to the differing header (if it does turn out to be relevant).



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References: 
 >Re: 'Global' NSURLCache? (From: email@hidden)
 >Re: 'Global' NSURLCache? (From: "Quinn \"The Eskimo!\"" <email@hidden>)

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