| Re: [mosquitto-dev] Repeated messages |
Hi Romu,
Do you disconnect quickly after receiving the messages? It is possible
that the PUBACKs from your client are not sent to the broker before
you disconnect.
You can test this out by looking at the broker logs with "log_type
debug" (or by starting with "-v"). Look for "Received PUBACK from
...."
Cheers,
Roger
On Thu, Oct 30, 2014 at 6:47 AM, Romu Hu <huruomu@xxxxxxxxx> wrote:
> Hi,
>
> I'm facing a weird problem: Sending 5 messages ('1', '2', '3', '4', '5')
> using android phone (PAHO mqtt library) to a topic (using mosquitto as
> broker), using qos=1, not retained, the subscriber (another android phone,
> also using PAHO mqtt library) of the topic receives these messages, then
> shutdown the network connection of the subscriber phone and turn it on again
> after about 30 seconds, the subscriber immediately receives '3', '4' and '5'
> again, then shutdown and restart the network again, the subscriber receives
> '4' and '5' again, shutdown and restart the network again, the subscriber
> receives '5'.
>
> The receiving of the repeated messages is not 100% reproducible. Sometimes
> the receiving of the repeated messages happens a couple of minutes after
> network reconnection. The publisher and receiver always connects to the
> broker with clean session as false.
>
> Why is this happening?
>
>
> Thanks
> Romu
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