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我有一個要求刪除未傳遞的消息,當客戶端訂閱topic.I只是想在我的application.There實現塊/疏通功能是步驟MQTT:刪除未傳遞的消息
1) Person "A" blocked person "B",now person B publishing messages to A and person A will not get messages.
第一步很簡單並輕鬆done.I我在這裏面臨着在第2步
2) when person A unblocked person "B" and reconnect to topic,then it should not get previous messages send by person "B".
我如何能做到這一點,有沒有什麼辦法訂閱之前清除主題的郵件問題?