[Twisted-Python] Problems with PB and Jelly...
jasper at peak.org
Wed Mar 19 19:03:32 EST 2003
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I'm new to twisted, and attempting to use it for networkable gaming;
unfortunately I've run into some problems.
I have a Perspective <-> Referenceable server/client setup, and am trying to
pass objects between them. Following the online docs I've set all the
relavent classes to inherit from pb.Copyable + pb.RemoteCopy, and passed them
all to pb.setUnjellyableForClass.
However, I still get "Module not allowed" exceptions raised in
twisted.spread.jelly.py line 523. Looking more closely, I see that modules
are not allowed unless passed to SecurityOptions.allowModules(), which is
only called from SecurityOptions.allowInstancesOf(), which is not exposed
In short I don't see how the example code on:
could possibly work! Is it indeed necessary to call allowInstancesOf()
directly? Hopefully I am just missing something... :-)
I'm also unsure what to make of the last bullet under "Things To Watch Out
For" on the above webpage. It seems unsure whether using __init__ to
initialize transferable objects is ok... Must I truly go and hack all
my objects to not use __init__, and instead use setCopyableState()?
This, especially when combined with the need to inherit from pb.Copyable +
pb.RemoteCopy, seems onerous when compared to the minimal interface of
pickle. I would like to be able to simple pass objects of arbitrary classes,
provided I've registered them as UnJellyable. Hopefully I'm missing
something here as well!
Thanks in advance,
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