[Twisted-Python] tor hidden service endpoint parser returns a deferred
exarkun at twistedmatrix.com
exarkun at twistedmatrix.com
Fri May 2 09:01:17 MDT 2014
On 02:53 pm, dstainton415 at gmail.com wrote:
>I get what you are saying... but let's back up a second;
>foolscap (in my branch
>https://github.com/david415/foolscap/tree/endpoint_descriptors_server2)
>uses clientFromString and serverFromString to translate twisted
>endpoint descriptors into endpoint objects... AND foolscap
>doesn't know any details about how the endpoint wire protocols work...
>and we'd like to keep it that way. That's really the point of this
>exercise.
>
>The calling party using foolscap... in this case Tahoe-LAFS also
>doesn't know anything about any wire protocols.
>It simply receives twisted endpoint descriptors from the user and
>passes them to foolscap.
But Foolscap does know about *endpoints*. It knows to call `listen` or
`connect` on them. Both of those methods return a `Deferred`. Any
setup work you need to do you should be able to do in the implementation
of those methods and however long it takes is how long it takes - just
don't fire the `Deferred` until it is ready.
Jean-Paul
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