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Session Ping ​

session.ping 用于确认 WebSocket 会话和应用层消息处理仍然可用。

Request ​

json
{
  "type": "request",
  "requestId": "req_ping_001",
  "topic": "session.ping",
  "data": {}
}

Reply ​

json
{
  "type": "reply",
  "requestId": "req_ping_001",
  "code": "SUCCESS",
  "message": "OK.",
  "data": {}
}

session.ping 不访问设备,也不能替代设备状态查询。建议同时使用 WebSocket 协议层 Ping/Pong 和应用层 session.ping。

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