JSON Commands - User Online Control

In this section:

1. Overview
   The Northbound Portal interface supports the following JSON commands:
2. Request Authentication - Asynchronous Login
   In the Hotspot (WISPr) WLAN use case, an unauthorized user is redirected to an external web portal server by the controller. Using the asynchronous login command (RequestType=LoginAsync), the external web portal server sends a request to the controller to authenticate the user using the authentication server.
3. Using Asynchronous API
   When using the asynchronous API (RequestType = LoginAsync), NBI will always return a response as pending authentication.
4. Request Authentication Synchronous Login
   The controller also provides a synchronous login blocking command (RequestType=Login).
5. Querying a User Status
   After the authentication request is issued, the external web portal server can query the user's authentication status.
6. Querying Enrichment Information
   The Northbound Portal Interface provides the JSON command EnrichmentInfo for verifying that the enrichment information has the same content as HTML header enrichment info sent from the AP.
7. Terminating a User Session
   After a user session is authorized, the external web portal server can terminate the user session by sending a JSON request to the controller.
8. Disconnect Command
   The controller also provides a command for terminating user TCP (Transmission Control Protocol) connections from the AP (Access Point).