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Re: [mosquitto-dev] Starting/stopping bridges dynamically

As as aside, RSMB had, and still does have the ability to create, delete, stop and start bridges dynamically. Although the commands are received through the file system rather than topics -- that was for security reasons at the time.

Roger apparently wasn't too keen on that feature :-)


On 23/01/15 21:04, Jos Vos wrote:
Hi Jan-Piet,

On Fri, Jan 23, 2015 at 09:22:01PM +0100, Jan-Piet Mens wrote:

Can you say why you'd want to see this? I can imagine it being
interesting but only if we could inject a new/changed bridge
configuration via similar means. AFAICT, what you're asking for is
actually the `lazy' bridge which sort of comes up and goes away if
there's no traffic (though I haven't experimented with those).
First: yes, the new/changed bridged configuration would be my next
question :-), but a static configuration would also help.

For the static configuration: assume a broker runs in a local network with
one subscription to a broker on a remote (cloud) server.  At some moment
the cloud broker wants to "tap" channels of the local broker (e.g. for
support reasons or because the remote site is a company HQ etc.).
The remote site cannot contact the local site (firewall, no VPN), so
a remote client cannot publish/subscribe directly to the local broker.

The remote site can "contact" the local site by publishing a message
to the subscribed channel and in this way request to start the bridge.

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