Testing your Subscriber
Discovery
| 100 | HTTP header discovery | |
| 101 | HTML tag discovery | |
| 102 | Atom feed discovery | |
| 103 | RSS feed discovery | |
| 104 | Discovery priority |
Subscribing
| 200 | Subscribing to a URL that reports a different rel=self | |
| 201 | Subscribing to a topic URL that sends an HTTP 302 temporary redirect | |
| 202 | Subscribing to a topic URL that sends an HTTP 301 permanent redirect | |
| 203 | Subscribing to a hub that sends a 307 temporary redirect | |
| 204 | Subscribing to a hub that sends a 308 permanent redirect | |
| 205 | Rejects a verification request with an invalid topic URL |
Distribution
| 300 | Returns HTTP 2xx when the notification payload is delivered | |
| 301 | Rejects a distribution request with an invalid signature | |
| 302 | Rejects a distribution request with no signature when the subscription was made with a secret |
Note: 301 and 302 only apply if your subscriber includes a secret with the subscription request.