Introduction
The heartbeat report is a simple empty content message that can be used to identify whether the Witness server is online and operational. This is also used to check the connection status to all the clients. In the event that the heartbeat fails to send to a specific client then the connection to that client will be terminated.
Contents
The heartbeat interval can be configured as part of the ICD-001 plugin configuration on the Witness server.
The heartbeat is simply the 10 byte message header with no payload. The payload length value in the header must be set to 0 (zero). See Message Format.
Client Heartbeats
Heartbeats can be sent from the clients. This is recommended because it provides a robust method to ensure the client to server connection is still alive. The format for the heartbeat is exactly the same - header only.
Related Information
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ICD-001 Track Filter Command (Witness 4.0)
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ICD-001 Acknowledge Alarm Command (Witness 4.0)
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ICD-001 Request Status Command (Witness 4.0)
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ICD-001 Detection Command (Witness 4.0)
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ICD-001 Update Entity Command (Witness 4.0)
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ICD-001 System Profile Command (Witness 4.0)
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ICD-001 External Trigger Command (Witness 4.0)
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ICD-001 Plugin (Witness 4.0)
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ICD-001 Command Reply (Witness 4.0)
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ICD-001 Camera Command (Witness 4.0)
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ICD-001 Track Command (Witness 4.0)
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ICD-001 Tracker Command (Witness 4.0)
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ICD-001 Commands (Witness 4.0)
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ICD-001 Change Log (Witness 4.0)
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ICD-001 Classification Report (Witness 4.0)