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From Andrus Adamchik <>
Subject ROP, server-side state and "session fixation problem"
Date Thu, 13 Sep 2012 22:30:30 GMT
Have a bit of an issue with ROP and the latest containers:

Essentially with BASIC auth we can no longer force the ROP client to return back to the same
session between requests. Both recent Tomcat and Jetty would reset session ID on every request
(as every request is under BASIC auth protection). A workaround now is special Tomcat configuration
to disable session resets. We can and should document it, but ideally I'd like ROP to work
anywhere out of the box.

We can't reliably track the changing session ID on the client, as it will create a client-side
race condition. 

Long term I think we should reserve BASIC auth for the stateless apps (why create a server
side session if we can create a Cayenne stack for every request on the fly). We don't have
a stateless option in ROP and this is a shame. 

So the question is what to do for stateful apps (and specifically in 3.1 where all ROP apps
are stateful by definition)? Anyone has implemented ROP auth other than BASIC? (Otherwise
I don't understand how this problem wasn't noticed till now).


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