Network backchannel on OSX 10.4 (CUPS 1.1.23)
keens312 at hotmail.com
Thu Sep 11 16:09:25 PDT 2008
> keens312 wrote:
> > Hi Michael,
> > For bonjour printer on OSX 10.4, printer cannot receive status message.
> > It seems CUPS 1.1.23 does not provide backchannel at FD #3.
> > What should I do for my network printing under OSX 10.4?
> Never depend on back-channel data for your driver to work.
> Let me say that again: NEVER DEPEND ON BACK-CHANNEL DATA FOR YOUR
> DRIVER TO WORK.
> Even in 10.5, not all backends support back-channel data, and your
> customers WILL use those backends to print. Support a "graceful"
> fall-back mode whenever possible, and/or disable features when you
> know you will not be able to do so.
> Michael Sweet, Easy Software Products mike at easysw dot com
For USB, we may use GenericPrinterClass and IPC for BC.
For network, is there a KEXT sample to use? can we find a GenericNetworkClass?
Can we improve the backends CUPS provides and release them as a part of driver?
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