mosquitto-users team mailing list archive

[Roger Light <roger@xxxxxxxxxx>]

Hi Niclas,

The MQTT protocol provides for a maximum message payload size of
268,435,455 bytes which is more than sufficient for the size of data
you are talking about. There is no reason to think what you're
suggesting wouldn't work with mosquitto.

Cheers,

Roger

On Tue, Apr 16, 2013 at 11:05 PM, Niclas Karlsson <niclas@xxxxxxxxxxx> wrote:
> Hi guys,
>
> I'm evaluating MQTT and the Mosquitto broker for a system that should
> collect sensor data from a number of embedded devices. The embedded devices
> is running Linux and is sending about 40 sensor values about every 30
> seconds. There will be about 1000 devices and increasing with about 500 per
> year. Most will be connected to the Internet by ADSL, LAN and 3G.
> It seems that MQTT is a good fit for this, but I have some concerns;
> I must be able to send messages to individually adressed devices to change
> settings etc. I guess this can be acomplished by sending a message to a
> topic that the desired device is listening to. In the message a reply
> address is provided which the device post the reply to. I guess this will
> work for fine for most situations, but what if I want to send large amount
> of data? e.g. a software update (approx. 30 MB)? will this work?
>
>
>
> Thanks!
> Niclas
>
>
> --
> Mailing list: https://launchpad.net/~mosquitto-users
> Post to     : mosquitto-users@xxxxxxxxxxxxxxxxxxx
> Unsubscribe : https://launchpad.net/~mosquitto-users
> More help   : https://help.launchpad.net/ListHelp
>