Re: [dnssd] SRP: support of SRP message with zero service?

[Kangping Dong <[e-mail]>]

> Why is it useful to have a hostname and address generally?  :)

If the client knows only the hostname and address, it doesn't know what
protocol should be used to communicate with the device, so it doesn't seem
to be useful to
know only the address. One use case in my mind is that a device may
register a well-known hostname, but didn't find a real case in local
constraint networks...

> I recall that we discussed that a device could temporarily not have a
particular service; and some expectation that in due time a service will
become available again.
> During this time the device wants to keep its name registered, to show
that it is still there and functional, and defend its name against
potential other devices taking that name.

*> *So one use case is deleting its service(s) but keeping the name
registered.


Will this encourage devices to always register their hostname even when
they don't provide any service? Do we have a link to that discussion? @Esko
Dijk <[e-mail]>


BRs,

Kangping




On Wed, Dec 7, 2022 at 7:32 PM Esko Dijk <[e-mail]>
wrote:

> I recall that we discussed that a device could temporarily not have a
> particular service; and some expectation that in due time a service will
> become available again.
>
> During this time the device wants to keep its name registered, to show
> that it is still there and functional, and defend its name against
> potential other devices taking that name.
>
>
>
> So one use case is deleting its service(s) but keeping the name registered.
>
>
>
> Regards
>
> Esko
>
>
>
> *From:* Ted Lemon <[e-mail]>
> *Sent:* Wednesday, December 7, 2022 12:15
> *To:* Kangping Dong <[e-mail]>
> *Cc:* Abtin Keshavarzian <[e-mail]>; DNSSD <[e-mail]>;
> Esko Dijk <[e-mail]>; Jonathan Hui <[e-mail]>
> *Subject:* Re: SRP: support of SRP message with zero service?
>
>
>
> Why is it useful to have a hostname and address generally?  :)
>
>
>
> Op wo 7 dec. 2022 om 06:09 schreef Kangping Dong <[e-mail]>
>
> Hi,
>
>
>
> Regarding SRP registration, it's unclear if at least one "Service
> Description Instruction" is required in a SRP message when the host is not
> being deleted.
>
> If it's not required to register at least one service, what's the use case
> of registering only the host/address? Any examples? (It doesn't seem to be
> useful
>
> to advertise only the host name and addresses with the Advertising Proxy :)
>
>
>
> Thanks!
>
>
>
>
>
>
>
> BRs,
>
> Kangping
>
>