Q) Runtime discovery of a specific server

[Generic Usenet Account]

Hello experts,

I would appreciate if someone can tell me what is the best way for
runtime discovery of a local server that is running a specific
service. The service is running on an IANA registered port. I
believe that there is some DNS and DHCP magic that can be performed to
return the address of such a server.

Any pointers to the RFCs would be appreciated.

Thanks,
Choi

[David Schwartz]

Post by Generic Usenet Account
I would appreciate if someone can tell me what is the best way for
runtime discovery of a local server that is running a specific
service.  The service is running on an IANA registered port.  I
believe that there is some DNS and DHCP magic that can be performed to
return the address of such a server.

The server has to do something that the client can detect. What that
something is -- it can be anything. Without knowing your requirements,
it's really hard to give you a useful answer. On what basis is the
client supposed to choose a server? Is there one server for the
planet? Are the server and client always on the same LAN? Or what?

DS

[Barry Margolin]

In article

Post by David Schwartz

Post by Generic Usenet Account
I would appreciate if someone can tell me what is the best way for
runtime discovery of a local server that is running a specific
service.  The service is running on an IANA registered port.  I
believe that there is some DNS and DHCP magic that can be performed to
return the address of such a server.

The server has to do something that the client can detect. What that
something is -- it can be anything. Without knowing your requirements,
it's really hard to give you a useful answer. On what basis is the
client supposed to choose a server? Is there one server for the
planet? Are the server and client always on the same LAN? Or what?

He mentioned "DNS magic", so I suspect what he's looking for are SRV
records. That's what Microsoft uses to advertise the location of
services on the local network.

[Generic Usenet Account]

Post by Barry Margolin
He mentioned "DNS magic", so I suspect what he's looking for are SRV
records.  That's what Microsoft uses to advertise the location of
services on the local network.

Yes indeed. A distinguished colleague of mine has proposed the
following alternatives (see OMA-DM-DM13-2011-0029R02-
CR_Client_Initiated_Bootstrap_and_DM_Bootstrap_Discovery.zip):

1) The host first obtains its domain name from the response that it
receives for a DHCP query that includes the "Client FQDN" option, with
an empty Domain Name field, as specified in [RFC 4702] and [RFC
4704]. It then issues a DNS Resource Record query, as specified in
[RFC 2782].

2) The host first obtains its domain name from the response that it
receives for a DHCP query that includes the "Access Network Domain
Name" option, as specified in [RFC 5986]. It then issues a DNS
Resource Record query, as specified in [RFC 2782].

Thanks,
Choi

[Generic Usenet Account]

Yes indeed.  A distinguished colleague of mine has proposed the
following alternatives (see OMA-DM-DM13-2011-0029R02-

Apologies for the incomplete URL. Here's the full URL:
http://member.openmobilealliance.org/ftp/Public_documents/DM/DM-DM13/2011/OMA-DM-DM13-2011-0029R02-CR_Client_Initiated_Bootstrap_and_DM_Bootstrap_Discovery.zip

Thanks,
Choi