CloudServices/Notifications/Specification/POSTOffice

The POST Office supports a very simple REST API allowing web apps to send notifications to a subscription token.

Web App Sends Notification

1. Web app sends notification to POST Office.

   W: POST /1.0/notification HTTP/1.1
   W:
   W: {
        "body":"{\"token\":\"T in Base 64\",...",
        "HMAC":"BASE64=="
      }
   P: HTTP/1.1 202 ACCEPTED
   

2. Body is a JSON serialization of

   { 
     "token": "T in Base 64",
     "timestamp": ######## (in seconds UTC), // Optional,
     "ttl": ######## (in seconds), // Optional
     "ciphertext": "BASE64==",
     "IV": "BASE64==",
   }
   

3. Ciphertext is a JSON serialization encrypted with the encryption key using AES-256-CBC and base-64 encoded. The contents of the payload differ based on the type of message. For example, the payload of a standard notification will look like the following:

   {
     "type":"notification",
     "title":"...",
     "body":"...",
     "url":"http://foobar.com"
   }