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Posted to users@activemq.apache.org by Mark Raynsford <li...@io7m.com.INVALID> on 2021/06/13 21:00:05 UTC
MQTT over UDP?
Hello!
Are there any plans to support MQTT over UDP? It seems that Artemis
only supports TCP right now.
--
Mark Raynsford | https://www.io7m.com
Re: MQTT over UDP?
Posted by Justin Bertram <jb...@apache.org>.
Thanks for the clarification. I'm not aware of any current or planned
effort to implement MQTT-SN.
Justin
On Mon, Jun 14, 2021 at 6:36 AM Mark Raynsford
<li...@io7m.com.invalid> wrote:
> On 2021-06-13T16:24:49 -0500
> Justin Bertram <jb...@apache.org> wrote:
>
> > I didn't realize that UDP was suitable for MQTT. Section 4.2 of both the
> > 3.1.1 [1] and 5.0 [2] MQTT specifications say:
> >
> > > The MQTT protocol requires an underlying transport that provides an
> > ordered, lossless, stream of bytes from the Client to Server and Server
> to
> > Client.
> > > ...
> > > Connectionless network transports such as User Datagram Protocol
> (UDP)
> > are not suitable on their own because they might lose or reorder data.
> >
> > Can you elaborate on the use-case here?
>
> Ah, sorry, my mistake - I keep referring to MQTT-SN as MQTT. It is
> essentialy the same protocol, but slightly adjusted for use in
> unreliable wireless networks. It can work over UDP, but it can also
> work over protocols such as Bluetooth.
>
> This is the current spec:
>
>
> https://www.oasis-open.org/committees/download.php/66091/MQTT-SN_spec_v1.2.pdf
>
> --
> Mark Raynsford | https://www.io7m.com
>
>
Re: MQTT over UDP?
Posted by Mark Raynsford <li...@io7m.com.INVALID>.
On 2021-06-13T16:24:49 -0500
Justin Bertram <jb...@apache.org> wrote:
> I didn't realize that UDP was suitable for MQTT. Section 4.2 of both the
> 3.1.1 [1] and 5.0 [2] MQTT specifications say:
>
> > The MQTT protocol requires an underlying transport that provides an
> ordered, lossless, stream of bytes from the Client to Server and Server to
> Client.
> > ...
> > Connectionless network transports such as User Datagram Protocol (UDP)
> are not suitable on their own because they might lose or reorder data.
>
> Can you elaborate on the use-case here?
Ah, sorry, my mistake - I keep referring to MQTT-SN as MQTT. It is
essentialy the same protocol, but slightly adjusted for use in
unreliable wireless networks. It can work over UDP, but it can also
work over protocols such as Bluetooth.
This is the current spec:
https://www.oasis-open.org/committees/download.php/66091/MQTT-SN_spec_v1.2.pdf
--
Mark Raynsford | https://www.io7m.com
Re: MQTT over UDP?
Posted by Justin Bertram <jb...@apache.org>.
I didn't realize that UDP was suitable for MQTT. Section 4.2 of both the
3.1.1 [1] and 5.0 [2] MQTT specifications say:
> The MQTT protocol requires an underlying transport that provides an
ordered, lossless, stream of bytes from the Client to Server and Server to
Client.
> ...
> Connectionless network transports such as User Datagram Protocol (UDP)
are not suitable on their own because they might lose or reorder data.
Can you elaborate on the use-case here?
Justin
[1]
http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html#_Toc398718098
[2]
https://docs.oasis-open.org/mqtt/mqtt/v5.0/os/mqtt-v5.0-os.html#_Toc3901233
On Sun, Jun 13, 2021 at 4:01 PM Mark Raynsford
<li...@io7m.com.invalid> wrote:
> Hello!
>
> Are there any plans to support MQTT over UDP? It seems that Artemis
> only supports TCP right now.
>
> --
> Mark Raynsford | https://www.io7m.com
>
>