Review Request: [PATCH] Make the FTP ioslave emit mime-type of the content before actually reading it
Dawit Alemayehu
adawit at kde.org
Mon Apr 18 17:28:13 BST 2011
> On April 18, 2011, 12:43 p.m., David Faure wrote:
> > kioslave/ftp/ftp.cpp, line 1766
> > <http://git.reviewboard.kde.org/r/101149/diff/1/?file=14721#file14721line1766>
> >
> > Maybe this should be "while we haven't read 1024 bytes", but of course the file could be smaller than that so it would have to check for that too.
> >
> > What I mean is: I assume peek() doesn't wait, so if the first packet we get is 48 bytes, we have only 48 bytes. Don't know if this is a real problem in practice though, feel free to ignore this comment.
No actually that is a good point. Perhaps a good compromise would be to wait for the 1024 bytes whenever the size of the content to be retrieved is known to be larger than 1024 bytes ? That way for the large enough files, we have a better success of getting a more accurate mime-type and for the others well we do the best we can. :) I will see what I can do about it. For the record, I did test this change with a small enough file, ftp://ftp.kde.org/pub/kde/README_UPLOAD, which happens to be only 404 bytes. Here is the log:
kio_ftp(2902) Ftp::copy: ftp "/pub/kde/README_UPLOAD" -> local file "/tmp/kde-dalemayehu/konqueroraj1566"
kio_ftp(2902) Ftp::ftpDataMode: want I has ^@
kio_ftp(2902) Ftp::ftpSendCmd: send> TYPE I
kio_ftp(2902) Ftp::ftpResponse: > 200 Switching to Binary mode.
kio_ftp(2902) Ftp::ftpResponse: resp> 200 Switching to Binary mode.
kio_ftp(2902) Ftp::ftpSendCmd: send> SIZE /pub/kde/README_UPLOAD
kio_ftp(2902) Ftp::ftpResponse: > 213 404
kio_ftp(2902) Ftp::ftpResponse: resp> 213 404
kio_ftp(2902) Ftp::ftpDataMode: want I has I
kio_ftp(2902) Ftp::ftpSendCmd: send> PASV
kio_ftp(2902) Ftp::ftpResponse: > 227 Entering Passive Mode (131,220,16,1,22,193).
kio_ftp(2902) Ftp::ftpResponse: resp> 227 Entering Passive Mode (131,220,16,1,22,193).
kio_ftp(2902) Ftp::ftpOpenPASVDataConnection: Connecting to "131.220.16.1" port 5825
kio_ftp(2902) Ftp::ftpSendCmd: send> retr /pub/kde/README_UPLOAD
kio_ftp(2902) Ftp::ftpResponse: > 150 Opening BINARY mode data connection for /pub/kde/README_UPLOAD (404 bytes).
kio_ftp(2902) Ftp::ftpResponse: resp> 150 Opening BINARY mode data connection for /pub/kde/README_UPLOAD (404 bytes).
kio_ftp(2902) Ftp::ftpOpenCommand: connected with remote.
kio_ftp(2902) Ftp::ftpGet: ftpGet: Emitting mimetype "text/x-readme"
kio_ftp(2902) Ftp::ftpGet: ftpGet: starting with offset= 0
kio_ftp(2902) Ftp::ftpGet: ftpGet: done
I will see what I can do about improving the code as suggested...
- Dawit
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This is an automatically generated e-mail. To reply, visit:
http://git.reviewboard.kde.org/r/101149/#review2723
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On April 18, 2011, 2:12 a.m., Dawit Alemayehu wrote:
>
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/101149/
> -----------------------------------------------------------
>
> (Updated April 18, 2011, 2:12 a.m.)
>
>
> Review request for kdelibs and David Faure.
>
>
> Summary
> -------
>
> The attached patch changes the ftpGet function such that it emits the mime-type of the content it is about to read, before starting to read it. That way kio_ftp will work correctly if and when it is put on hold to be reused from another application. Note that the patch uses QIODevice::peek to achieve this goal.
>
>
> Diffs
> -----
>
> kioslave/ftp/ftp.cpp 64f43d8
>
> Diff: http://git.reviewboard.kde.org/r/101149/diff
>
>
> Testing
> -------
>
>
> Thanks,
>
> Dawit
>
>
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