Julien First, thank-you and well done for writing this down.
Second, this type of behaviour is quite common in things like financial services market data feeds. Often in such cases, a middlebox or middleman takes responsibility for what would ideally by an end-end relationship between producer and consumer, but which for some business reason is brokered. Third, I agree with Bob's comments. I also feel this potentially complicates the spec and subscription process for just one particular use case. In an ideal world, a publisher who wanted to know who was subscribed via PSHB, could just set up and run their own hub. But let's say that they cannot or will not do that for some reason. Instead they might run a private hub, but delegate its hosting and management to a middleman service. Enter superfeedr as a suitable such provider. But if superfeedr is acting on behalf of a publisher in this way, then why can't the mechanisms for sharing subscription data and auth lists with that publisher also be private? What is the benefit of including it in the spec? I'd rather see hubs being able to turn down subscriptions for any reason they like, and possibly silently. Please note that the above is not a strongly held view ;-) I am keen to understand more about what you are proposing. But at this stage I think this should either unspecified, or (perhaps?) be spelt out even more strongly and thought about in relation to authentication and discovery in general. alexis On Wed, Jan 20, 2010 at 10:28 AM, Julien Genestoux <[email protected]> wrote: > Hey, > We (superfeedr) have been in talks with a lot of publishers and several of > them where concerned about the "blindness" for publishers in the > PubSubHubbub protocol. > Sorry for linking from the Superfeedr blog > (http://blog.superfeedr.com/Extension/PubSubHubbub/Spec/publisher-callback-extension/), > but if you're looking for more insight on why we're proposing this, you can > find it there. > We published the Extension proposal to the wiki > : http://code.google.com/p/pubsubhubbub/wiki/AcceptingSubscriptionForPublishers?ts=1263982978&updated=AcceptingSubscriptionForPublishers > I'd love to have everybody's opinion. Bob added a few comments and I'd like > to insist on the fact that this doesn't solve any copyright issue. It just > makes it a little easier for publishers to know about who subscribed to > their content. > I'd love to know what you guys think :). Please help me complete that! > Cheers > > > -- > Julien Genestoux, > > http://twitter.com/julien51 > http://superfeedr.com > > +1 (415) 830 6574 > +33 (0)9 70 44 76 29 > Sent from Milan, MI, Italy
