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To get the camera events using WebSocket, do the following:
- Connect to ws://[user_name]:[password]@[IP-address]:[port]/[prefix]/events.
Send a JSON command to subscribe on events generated by the specified cameras (see 비디오 카메라 목록 및 정보 가져오기). This subscription allows you to receive all the events shown in the table below.
Code Block { "include": ["hosts/Server1/DeviceIpint.1/SourceEndpoint.video:0:0", "hosts/Server1/DeviceIpint.6/SourceEndpoint.video:0:0"], "exclude":[] }include – subscribe to the events receiving;
exclude – disable the events receiving.
The response will contain the following JSON:
| Code Block |
|---|
{
objecs: [
{type: "devicestatechanged", name: "hosts/Server1/DeviceIpint.1", state: "signal restored"}
]
} |
List of event types and camera states:
| Event type | Description | States |
|---|---|---|
| devicestatechanged | Camera state | signal restored – connected, signal restored signal lost – signal lost |
| alert | Alarm | No states |
| alert_state | Alarm state | processing – the alarm is being processed closed – alarm processed reaction – alarm initiated |
| detector_event | Detection tool triggering | No states |
| camera_record_state | Archive record state | on – the camera is recording to the archive off – the camera is not linked to the archive gray – the camera is linked to the archive, but is not recording |
| Info | ||
|---|---|---|
| ||
If the camera is disabled in Axxon One, no events are received from it using WebSocket, including the signal lost event. |
Example of message:
| Code Block |
|---|
objects: [{name: "hosts/Server1/DeviceIpint.1/SourceEndpoint.video:0:0", state: "signal restored",…},…]
0: {name: "hosts/Server1/DeviceIpint.1/SourceEndpoint.video:0:0", state: "signal restored",…}
name: "hosts/Server1/DeviceIpint.1/SourceEndpoint.video:0:0"
state: "signal restored"
type: "devicestatechanged" |
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