change of response URL

[Peter Schober]

* Rohit Shinde <rohit at venturit.com> [2018-11-22 12:51]:
> Ok thanks for information. How to access variables through HTTP
> Request Headers (instead of environment variables) ?

RTFM?

How to make the SP generate them:
https://github.com/nginx-shib/nginx-http-shibboleth
See the "shib_request_use_headers" parameter and there's a full
example in the configuration section for ""location /secure":

  # Choose this type of configuration for ``proxy_pass`` applications
  # or backends that don't support server parameters.

How to access them from Rails (last example at the end):
https://wiki.shibboleth.net/confluence/display/SP3/AttributeAccess

-peter