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RE: [dsdp-tm-dev] Service Discovery question
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Hi Mark,
Service Discovery is a Framework which can assume different
methods
of discovering remote services.
The only implementation we have now is using the Zeroconf
protocol.
Zeroconf uses UDP broadcasts and requires a server to run
on the
remote, which advertises available services. I know that on
Fedora
Core 5 and later distributions such a zeroconf server seems
to be
typically running; you typically see SSH ports advertised
when you
ping the local LAN multicast address.
Probing ports specificilly would be a different method of
discovery,
but (1) wouldn't allow you to discover the IP on the LAN if
you don't
know it and (2) likely wouldn't scale very well if you have
many ports
to probe. But it depends on your kind of application, so if
you think
that's the right method for you, you can implement service
discovery
extensions to have it use such a
method.
Cheers,
--
Martin Oberhuber, Senior Member of Technical
Staff, Wind River
Target Management Project
Lead, DSDP PMC Member
Hi,
I have an service discovery question. If I implement an
RSE server on my target device and I have FTP and Telnet servers available
what do I need to do to make those services available through RSE and Service
Discovery? Do I need to implement a schema and miner to register these
services with the server datastore to make them visible through service
discovery? Or are FTP and Telnet supported natively?
My use case is that I have an IP address for a device
and that's it and I want to be able to discover the services it provides. I
would think that unless the FTP and Telnet agents are registered through the
DataStore then the service discovery would in effect be a ping on ports 21 and
23 to discover if they are present.
Many thanks,
Mark.
Mark Welsh
Symbian - Development
Tools
Tel - 02071541014
Mobile - 07823533818
Experience innovation in action - visit the Smartphone Show, 21-22
October 2008, Earls Court 2,
London
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