What is the mechanism? - The common way:
- sit behind a reverse proxy
- proxy intercepts a special request
- after login is complete, proxy redirects to the original request.
- HTTP header must contain a UID or equivalent identifier.
- Commonly Apache, with a module to accomplish the work
- The other way
- specify a redirection URL
- No proxy or interception required.
- HTTP header is the same.
- Where is the /loginExternalAuthReturn page?
- VIVO just redirects from there.
- Home page
- Profile page
- New account
How to debug? - Is the request being intercepted?
- Increase the log settings
- Look at headers
- Is your UID in a header?
- Configure VIVO to read that header.
- Otherwise, configure the reverse proxy to intercept it.
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