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断开连接消息在 aws iot 核心中具有以下结构:

{
"clientId": "186b5",
"timestamp": 1573002340451,
"eventType": "disconnected",
"sessionIdentifier": "a4666d2a7d844ae4ac5d7b38c9cb7967",
"principalIdentifier": "12345678901234567890123456789012",
"clientInitiatedDisconnect": true,
"disconnectReason": "CLIENT_INITIATED_DISCONNECT",
"versionNumber": 0

}

这里的客户端 ID 有 128 个字节的限制,所以我无法传递一些数据,如何传递附加属性以从断开消息中获取?

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