CME Smart Stream Websockets - Heartbeat
Output - Heartbeat
Unsolicited message sent from the server on a periodic basis.
Fields
| Ref | Field | Name | Data Type | Values | Usage | Description |
|---|---|---|---|---|---|---|
| 1 | header | |||||
| 2 | → messageType | Message Type | string |
| ALWAYS | Denotes trade summary message. |
| 3 | → sentTime | Sent Timestamp | timestamp | ALWAYS | CME MDP gateway sends the message (UTC). | |
| 4 | → sequenceNumber | sequenceNumber | string | ALWAYS | ||
| 5 | → version | API Version | string |
| ALWAYS | |
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