2n Helios IP HTTP API Manual v2.7 Manuel d'utilisateur télécharger pdf (Page 9)

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In the mode, 2N Helios IP sends events to the subscriber in the form ofSubscription

Notify messages.

In the mode, the client sends the GetMessages request to retrieve the logPullPoint

data.

Data Retrieval in Subscription Mode

To retrieve events from 2N® Helios IP in the Subscription mode, subscribe via the

command, specifying the type of events to be retrieved, the HTTP sendingSubscribe

address and the subscription time.

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

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

Now 2N® Helios IP starts sending messages to the specified HTTP address.Notify

Events are sent at the moment of rise without delay. In your Subscribe request, you

can specify the maximum count of events to be sent within one Notify message.

The subscription time is limited (as specified in the Subscribe 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

If there is a firewall or NAT between you and 2N® Helios IP, the Subscription mode

may not be convenient. The Notify messages are delivered only if the network

elements are properly configured.

The figure below shows the status diagram and typical client - 2N® Helios IP message

sequence.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 28 29

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2n Helios IP HTTP API Manual v2.7 Manuel d'utilisateur Page 9