On Sun, Jun 5, 2011 at 2:24 PM, todd rme <toddrme2...@gmail.com> wrote:
> On Sun, Jun 5, 2011 at 9:55 AM, Thiago Macieira <thi...@kde.org> wrote: > > Em Sunday, 5 de June de 2011, às 13:06:07, tushar mehta escreveu: > >> Hi all, > >> > >> I am currently trying to understand how kde applications uses kio > >> for doing file related operations. I am currently working on kget and > >> as part of my summer of code project task I need to figure out how > >> we can have speed limit on transfer using kio protocols like http/ftp. > >> > >> Do have we have any sample examples or documentation related > >> to KIO? > > > > I don't think there's any documentation on that. Just read the source > code, > > starting at KIO::Connection. > > > > But to simplify what you're looking for: kioslaves use blocking methods. > They > > read from the network one chunk of data and then they send that chunk of > data > > to the application (via KIO::Connection). The application also uses > > KIO::Connection to read that chunk of data. > > > > When the ioslave fills up the kernel transfer buffer, KIO::Connection > will > > block, waiting for the application to read from the same buffer. > > > > In order to implement a rate control in the ioslave, you simply need to > > implement a rate control in the application. After the stabilisation > phase, > > the ioslave will download at the same rate that the application reads > from the > > slave. > > Might it be better to put it in KIO::Connection so it can be used more > generally? For instance KNewStuff often exceeds the server > thresholds, locking out the user for a while. Bandwidth limits could > avoid this. It could also be useful if exposed to konqueror or rekonq > plugins. > > -Todd > > >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to > unsubscribe << >
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