Does the IoT Platform Support Re-push?
Yes, the platform supports re-push.
After the platform pushes a message to an application, the application returns the 200 OK response code to the platform if the application receives the message. If the application does not respond within 15 seconds or returns a 501, 502, 503, or 504 message, the message push fails. The platform caches the message for 10 minutes, and retries to push the message to each failed application in polling mode. If the retry fails, the platform does not push the message again. If the platform fails to push a message for 10 consecutive times within the message cache time, the platform considers the callback URL as invalid and checks the validity of all failed URLs in polling mode. If a URL is found valid, the platform restores the URL. You can log in to the IoTDA console, choose Resource Spaces in the navigation pane, click View in the row of a resource space, and view the URL status on the Subscription/Push tab page.
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