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The redirect url contains a url parameter "return". Your login page need to get the value of the return parameter, and use it to form rediect url after use make their login selection.
| User Choose | Send Redirect user to url |
|---|---|
| Cornell NetID | The value of return parameter&entityID=https%3A%2F%2Fshibidp.cit.cornell.edu%2Fidp%2Fshibboleth |
| WeillMedical ID | The value of return parameter&entityID=https%3A%2F%2Flogin.weill.cornell.edu%2Fidp |
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