[rabbitmq-discuss] MQTT plugin, QoS 1, Android, not consuming on reconnect

[brydev]

Thanks for the help in understanding the issue better.

I won't be testing again for a few days so I will let you know how the 5 -
10 sec heartbeat works out.


On Fri, Jul 25, 2014 at 9:24 PM, Michael Klishin-2 [via RabbitMQ] <
ml-node+s1065348n36895h8 at n5.nabble.com> wrote:

> +rabbitmq-discuss
>
> On 26 July 2014 at 00:18:32, Bryan Cliffe ([hidden email]
> <http://user/SendEmail.jtp?type=node&node=36895&i=0>) wrote:
> > > I'm disconnecting from wifi and reconnecting through cellular
> > to test the robustness of the connection when the I.P changes.
> > I wanted to see how the paho java client would handle message delivery
> > on QoS 1 to Android. I'm then filling the queue during the handover
> > phase and I can't consume on reconnect. I'm using two different
> > values for the heartbeat which is 240000ms and 30000ms but I'm
> > having the same problem with both. It would be interesting if
> > it's not detecting the change over from wifi to cellular.
>
> I'm not familiar with how exactly switching from WiFi to cellular data
> affects
> TCP connections on Android but in general, this is exactly the kind of
> issue
> heartbeats in MQTT are for.
>
> Try using a value of 5-10 seconds. I'm all for improving RabbitMQ MQTT
> plugin
> for this case but if Rabbit doesn't get a notification from the OS that
> the peer
> disconnected, a low heartbeat interval is the only possible solution.
> --
> MK
>
> Staff Software Engineer, Pivotal/RabbitMQ
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