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Message from discussion Does Android cache http-requested data?
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Jan Burse  
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 More options Oct 14 2012, 5:16 am
From: Jan Burse <janbu...@fastmail.fm>
Date: Sun, 14 Oct 2012 11:12:55 +0200
Local: Sun, Oct 14 2012 5:12 am
Subject: Re: Does Android cache http-requested data?
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Keith Wiley schrieb:

> I am quite flummoxed.  I am aware that Android is requesting and
> receiving a GZipInputStream, and I can see the input stream's type in
> the debugger, but that seems irrelevant to my issue.

Caching of web server chains can be very elaborate. See
for example here:

http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
14.9 Cache-Control

So eventually setUseCache() to false can help, but might
slowdown your requests.

It could be also an issue on the server side, that for example
the server emits a wrong "Expires" header, this header is also
described in the above RFC.

If you re-access the same file multiple times and if you
can remember the modified date, then the setIfModifiedDate()
comes very handy. If the data on the server doesn't have a
newer modified date, you will get:

     HTTP_NOT_MODIFIED = 304;

Bye


 
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