Comments (2)
Is my understanding correct that the QoS 2 only guarantees the message reaching to broker, but not necessary the subscribers right?
Your understanding is correct.
Is there a way for publisher to get the acknowledgments from subscriber(s)? Let say the publisher expect 2 acks from 2 subscribers
As far as I know, there is currently no such functionality. So, right now, I think you will have to relay on application logic to get such acknowledgments.
Perhaps, this is an extension that could be worth implementing in the feature. Can you explain why you need this to be implemented as part of EMQX rather than with application logic?
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In MQTT, there is no builtin semantics for consumer confirmation. The specification however provided a mechanism and guidelines how to implement it with PUB/SUB primitives, check out request/response:
https://www.emqx.com/en/blog/mqtt5-request-response
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Related Issues (20)
- The client is powered off, but one month later EMQX still shows that the client is connected HOT 3
- bad_cert,hostname_check_failed HOT 5
- Plugin hook points not called when auto-booting plugin in a cluster HOT 5
- The retained message function in EMQX is controlled by two switches
- emqx_authn_pgsql resource down: unknown reason HOT 6
- Setting hibernate_after for tcp connection HOT 2
- Return wrong Receive Maximum
- The message queue size may exceed the maximum limit after setting topic priority HOT 2
- Setting max_heap_size to 0 causes function_clause HOT 1
- 在服务区上部署EMQX这一步出现以下问题 HOT 2
- 在云服务器连接实例后部署EMQX遇到问题, HOT 1
- 在软路由“”爱快(ikuai)”(debian12系统)上docker中安装eqmx启动报错 HOT 7
- "Mnesia is overloaded" messaggio di warning HOT 3
- Variable in header HOT 3
- EMQXWebSocket 客户端连接错误 HOT 7
- 配置SSL,8883,单向证书问题 HOT 1
- jwt过期导致无法发送遗嘱 HOT 6
- Exclusive subscriptions rejected with QuotaExceeded for no reason? HOT 12
- can't get real ipaddress of clients HOT 4
- receive a huge of connect and disconnect events from one client with no reasons HOT 8
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