Re: [paho-dev] MQTT clientfor ZeroMQ

["Abdul Hakeem" <alhakeem@xxxxxxxxx>]

Thanks Frank.
I am already using a ZMQ to RabbitMQ bridge,  by virtue of which I can talk to
MQTT via an MQTT to AMQP bridge.
As you said, it's not light.
I now aim to test out the Lua MQTT client to pass messages to the Application
server which also support AMQP and embedded Lua.
Cheers,
AH

-----Original Message-----
From: paho-dev-bounces@xxxxxxxxxxx [mailto:paho-dev-bounces@xxxxxxxxxxx] On
Behalf Of Frank Pagliughi
Sent: Tuesday, November 10, 2015 3:11 PM
To: paho-dev@xxxxxxxxxxx
Subject: Re: [paho-dev] MQTT clientfor ZeroMQ

ZeroMQ is a flexible toolkit for writing different communications
patterns, whereas MQTT is broker-based publisher/subscriber system.
Although 0MQ has pub/sub sockets as one of it's many patterns, the wire
format is different than that used by MQTT, so they are certainly not
directly compatible.

ZeroMQ sockets mostly just want to talk to other ZeroMQ sockets, so for
the majority of systems, you would write all your services using just
0MQ. It does have some low-level interfaces to talk to the rest of the
world, but if you wanted to use them to speak to an MQTT broker, you
would essentially need to write an MQTT client library using these
interfaces. That is not a "light" solution.

If MQTT does everything that you need then just forget about ZeroMQ and
pick out an existing MQTT client. You will be up and running much more
quickly.

But if you already have a ZeroMQ platform running (or desire some ZMQ
patterns not supported by MQTT), and want to bridge some of it to MQTT,
then you can write a bridge app between the two systems. My advice, in
that case, would be to take the ZeroMQ library and an MQTT client
library, and write a program that shuffles packets back and forth
between them.

Frank


On 11/09/2015 04:48 PM, Abdul Hakeem wrote:
> Hello,
>
> ZeroMQ can do sockets, HTTP/Websocket/Telnet e.t.c. protocol transports and
this
> can be done peer to peer. It would far more efficient to use MQTT over 0MQ
> Websockets for instance, in my view.
> An MQTT to 0MQ bridge can be coded for instance,  but I'm hoping someone can
> shed light on how to keep this as light as possible.
> Cheers,
> Abdul Hakeem
>
> -----Original Message-----
> From: paho-dev-bounces@xxxxxxxxxxx [mailto:paho-dev-bounces@xxxxxxxxxxx] On
> Behalf Of Ian Craggs
> Sent: Monday, November 9, 2015 12:18 PM
> To: paho-dev@xxxxxxxxxxx
> Subject: Re: [paho-dev] MQTT clientfor ZeroMQ
>
> I don't.  But doesn't ZeroMQ provide similar facilities to MQTT? Does it
> make sense to run MQTT over ZeroMQ?
>
> Secondly, the Paho embedded client is intended to make it easy to port
> to different network interfaces.  You have to write a very small module
> for the network specific code, the rest stays the same.
>
> Ian
>
> On 11/08/2015 10:11 PM, Abdul Hakeem wrote:
>> Hello,
>> Does anyone have knowledge of an embedded MQTT client running over
> ZMTPZWS/ZHTTP
>> or plain ZeroMQ sockets over TCP ?
>>
>>
>> Regards,
>> Abdul Hakeem
>>
>>
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> --
> Ian Craggs
> icraggs@xxxxxxxxxx                 IBM United Kingdom
> Paho Project Lead; Committer on Mosquitto
>
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