[cas-dev] CAS login-webflow execution cycle

[Lee Braddock]

Hello,

 

When logging  into CAS, it appears (according to DEBUG level logs) that
the login-webflow.xml is executed more than once, before the
viewGenericLoginSuccessPage is eventually displayed.

 

This behavior seems to adversely impact our modified version of the
login-webflow.xml as follows:

 

We have modified the login-webflow.xml such that we trust
non-interactive credentials provided us implicitly and therefore our web
flow does not require user input.  However, due to the fact that the web
flow executes twice, we generate a second and unnecessary TGT on the
second execution.

 

Can you explain:

 

1)      Why login-webflow.xml web flow executes more than once (if,
indeed, it does) per login?

2)      How it recognizes this and displays the login success page on a
subsequent execution as opposed to repeating the same web flow cycle
over and over again (the answer to this question may help us to
understand how we can prevent it generating a second and unnecessary TGT
on non-interactive credentials login)?

 

Thanks.

 

Lee

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