Improve session message injection #2117
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@dotnet-policy-service agree |
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@chkr1011 Thanks! The CI-workflow is not approved yet. It this intentional? |
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@chkr1011 Sorry to bother you again, but the CI has failed on the "sign nugets step". :)) |
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Hi there!
I'm trying to build a scalable, persistent MQTT server around RabbitMQ, using the MQTTNet server as a frontend.
While doing this, I found that there is currently no proper way to correlate injected QoS 1 messages with the packets received by the
ClientAcknowledgedPublishPacketAsyncevent. So, there is no way for me to pass the PUBACK further to RabbitMQ's message acknowledgment.Additionally, I noticed that
DeliverApplicationMessageAsync()method may hang indefinitely whenMqttPendingMessagesOverflowStrategy.DropNewMessageis used, because in the case of an output buffer overflow, thepacketBusItembeing awaited is dropped from the queue without the Task'sResultorExceptionbeing set.So, in this PR:
MqttPublishPacketas a result of message injection methods, to be able to correlate them by packet id later.DeliverApplicationMessageAsync()method.Thanks for the great project, btw!