2n Helios IP HTTP API v2.6 Manual do Utilizador descarregar pdf (Página 10)

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Data Retrieval in PullPoint Mode

To retrieve events from 2N® Helios IP in the PullPoint mode, create the PullPoint via

the request, specifying the type of events to be retrieved and theCreatePullPoint

subscription time.

If the subscription is successful, 2N® Helios IP sends the iCreatePullPointResponse

ncluding the Subscription Id for subsequent communication with 2N® Helios IP.

Now you can read out events from 2N® Helios IP periodically using the GetMessages

request. 2N® Helios IP sends the including the list of events.GetMessagesResponse

In case there is no event in the queue, the event list is empty in the response.

The subscription time is limited (as specified in the CreatePullPoint request). When the

subscription time expires, you will be unsubscribed automatically. To extend the

subscription time, send the request before expiry. 2N® Helios IP will reply withRenew

the message.RenewResponse

Send the request to unsubscribe explicitly. 2N® Helios IP will reply withUnsubscribe

the message.UnsubscribeResponse

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2n Helios IP HTTP API v2.6 Manual do Utilizador Página 10