Send http from IdP to external web service

[Cantor, Scott]

> Wow, this is exactly what I’m looking for!  We just need to do some prep
> work on behalf of the user for the given Service, before they are redirected.

That's arguably more of an interceptor use case, but I suppose it's always possible to "resolve an attribute" with a side effect. A bit dangerous depending how it's done, but it's possible.

> When is v3.4 expected to be out?

https://wiki.shibboleth.net/confluence/display/DEV/Project+Roadmap

I'd probably bet more on December than the Q1 estimate I last used in the roadmap.

-- Scott