On 05/15/2014 04:35 AM, Chris Cannam wrote:
>
>
> On Thu, May 15, 2014, at 12:17 PM, Ted Felix wrote:
>> On 05/15/2014 06:51 AM, Tim Munro wrote:
>>> Do test QNetworkAccessManager with .rg files. I discovered an
>>> annoying tendency to automatically expand zipped files, even when
>>> they are suffixed .rg.
>>
>> It seems to work fine for me. My test file is very small, though.
>> Was there anything interesting about your test file?
>
> Is it possible it's the server that notices the file is gzipped, and
> magically gives it an XML content type with gzip encoding? If the Qt
> code had at the same time become able to handle such encodings, then
> that might come out as a regression overall for Rosegarden as you
> describe.
Using an old Red Hat 7.1 Apache server, I first noticed that the
downloaded file, while keeping the same name, was several times
larger than the original. A hex editor confirmed the file had been
decompressed, and a packet sniffer confirmed that the decompression
was taking place on my end, following the transfer. And the server
was indeed sending back the header, "Content-Encoding: gzip."
I think web browsers routinely decompress this stuff, and The QT
folks apparently don't consider it a bug when QNetworkAccessManager
thinks it's a web browser. After a day or so of trial and error, I
found that
QNetworkRequest.RawHeader("Accept-Encoding", "gzip,deflate")
repressed the behavior, but it seemed a little too squirrelly to me.
I wish the class had some sort of a real switch to control this. I'm
seeing the same behavior with both Qt4 and Qt5.
A possible kludge might be to recompress files that have been
automatically decompressed, in order to keep the rest of Rosegarden
happy.
Tim Munro
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