Re: [paho-dev] MQTT <-> REST+websocket mapping

[Roger Light <roger@xxxxxxxxxx>]

Hi,

To clarify the point, the websocket subprotocol is the string
"mqttv3.1" in the call "new WebSocket(wsurl, 'mqttv3.1')" as described
here: http://wiki.eclipse.org/Paho/Paho_Websockets

So we're already doing it, it just wants registering.

Cheers,

Roger


On Mon, Mar 18, 2013 at 11:05 AM, Raphael Cohn <raphael.cohn@xxxxxxxxxxx> wrote:
> Dave,
>
> I agree - there shouldn't be a separate port for MQTT over WebSockets.
> Ordinarily, the browser will expect a WS / WSS connection to go over the
> port the page loading the JS was served from. Cross Origin (CORS) WebSockets
> are possible, too, but the expectation is that they would be using normal
> HTTP or HTTPS ports. WebSockets aren't much more than a tunnel for TCP
> through a HTTP endpoint...
>
> What there is needed, though, is an IANA Websockets subprotocol
> registration. This allows one HTTP endpoint to serve different protocols to
> the same relative URL path. Why does this matter? Well, it means a lot of
> servers only need to have, say, /websockets-be-here set up. It also allows
> protocol negotiation, which is useful if you serve multiple versions of the
> same protocol, or allow STOMP and MQTT to co-exist. (Perhaps you're serving
> up a MQ, but some clients only use MQTT and other s STOMP).
>
> Raph
>
> Raphael Cohn
> Chief Architect, stormmq
> Secretary, OASIS AMQP Standard
> raphael.cohn@xxxxxxxxxxx
> +44 7590 675 756
>
> UK Office:
> Hamblethorpe Farm, Crag Lane, Bradley BD20 9DB, North Yorkshire, United
> Kingdom
> Telephone: +44 845 3712 567
>
> Registered office:
> 16 Anchor Street, Chelmsford, Essex, CM2 0JY, United Kingdom
> StormMQ Limited is Registered in England and Wales under Company Number
> 07175657
> StormMQ.com
>
>
> On 18 March 2013 10:51, Dave Locke <locke@xxxxxxxxxx> wrote:
>>
>> not sure that a separate port is needed for MQTT over WebSockets.  Why not
>> piggy back on the standard MQTT ports or the standard HTTP ports?    One of
>> the proposed benefits of WebSockets is that it should make it easy to
>> traverse firewalls and proxies...
>>
>>
>> All the best
>> Dave
>>
>>
>>
>> From:        Raphael Cohn <raphael.cohn@xxxxxxxxxxx>
>> To:        General development discussions for paho project
>> <paho-dev@xxxxxxxxxxx>,
>> Date:        17/03/2013 19:06
>> Subject:        Re: [paho-dev] MQTT <-> REST+websocket mapping
>> Sent by:        paho-dev-bounces@xxxxxxxxxxx
>> ________________________________
>>
>>
>>
>> Yes, I mean a websocket subprotocol. Best to nab it - I'd be happy as it
>> being registered by Eclipse / Paho. The other alternative is to have it
>> registered by the about to be established OASIS TC, which might gie it more
>> weight in some eyes. (it's possibly moot). But the OASIS TC isn't planning
>> AFAIK to start doing any work on standardising a websockets binding.
>>
>>
>> Raphael Cohn
>> Chief Architect, stormmq
>> Secretary, OASIS AMQP Standard
>> raphael.cohn@xxxxxxxxxxx
>> +44 7590 675 756
>>
>> UK Office:
>> Hamblethorpe Farm, Crag Lane, Bradley BD20 9DB, North Yorkshire, United
>> Kingdom
>> Telephone: +44 845 3712 567
>>
>> Registered office:
>> 16 Anchor Street, Chelmsford, Essex, CM2 0JY, United Kingdom
>> StormMQ Limited is Registered in England and Wales under Company Number
>> 07175657
>> StormMQ.com
>>
>>
>> On 16 March 2013 21:08, Roger Light <roger@xxxxxxxxxx> wrote:
>> On Sat, Mar 16, 2013 at 9:02 PM, andypiperuk@xxxxxxxxx
>> <andypiperuk@xxxxxxxxx> wrote:
>> >
>> > On Fri, Mar 15, 2013 at 6:07 PM, Raphael Cohn <raphael.cohn@xxxxxxxxxxx>
>> > wrote:
>> >>
>> >> We do need to register an IANA subprotocol for MQTT at some point
>> >
>> >
>> > The current IANA registration for MQTT is as follows:
>> >
>> > ibm-mqisdp      1883/udp     # IBM MQSeries SCADA
>> > ibm-mqisdp      1883/tcp     # IBM MQSeries SCADA
>> >
>> > did you mean something different?
>>
>> I presume Raphael means a websocket subprotocol:
>> http://www.iana.org/assignments/websocket/websocket.xml
>>
>> > I'm not sure who originally registered the
>> > IANA ports (AndySC possibly?) and it would be nice to have these renamed
>> > to
>> > MQTT rather than the IBM-specific references.
>>
>> It was Andy SC. I've mentioned the same thing before myself :)
>>
>> Cheers,
>>
>> Roger
>> _______________________________________________
>> paho-dev mailing list
>> paho-dev@xxxxxxxxxxx
>> http://dev.eclipse.org/mailman/listinfo/paho-dev
>> _______________________________________________
>> paho-dev mailing list
>> paho-dev@xxxxxxxxxxx
>> http://dev.eclipse.org/mailman/listinfo/paho-dev
>>
>>
>> Unless stated otherwise above:
>> IBM United Kingdom Limited - Registered in England and Wales with number
>> 741598.
>> Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU
>>
>> _______________________________________________
>> paho-dev mailing list
>> paho-dev@xxxxxxxxxxx
>> http://dev.eclipse.org/mailman/listinfo/paho-dev
>>
>
>
> _______________________________________________
> paho-dev mailing list
> paho-dev@xxxxxxxxxxx
> http://dev.eclipse.org/mailman/listinfo/paho-dev
>