Default: 0 (Turned off) [Since 9.5.0]
Default: 25 (Turned on) It means the http session will keep alive during the ping and pong mechanism until the user closes the browser tab or navigates to another browser page. [Since 9.6.1]
- Available for ZK:
It specifies the interval in second of the ping mechanism described in RFC 6455 when WebSocket connection is enabled.
Only works when WebSocket connection is enabled.