Implementation/SAS:APS Server

SAS/APS server

The SAS and APS server are both running a JAVA servlet. I combined them in one .war file.
The servers ALWAYS respond with a JSON answer and ONLY accept a POST JSON request.

SAS

The SAS server is open to the internet because user must be able to send there connection response to the server.
The servet takes care of the following:

• Disallow GET requests
• Validate incoming POST JSON
• Forwards Authentication request to APS
  • If response contains user info then a PUSH notification can be send to the registerd device
  • If response does not contain user info then send an email with the steps to install and register the app/device
• Forwards register request to APS and forward APS response to device
• Forward unregister request to APS
• Handles the confirm request from the device (approved, cancelled)

APS

The APS server validates the user credentials and is the connection to the LDAP directory.
The server handles the following:

• Disallow GET requests
• Validate incoming POST JSON
• Answers authentication requests
• Sends email messages
• Registers devices in the LDAP directory
• Unregisters devices in the LDAP directory