My answers below:
On Fri, Sep 7, 2012 at 9:12 AM, Wang, Ren <ren.w...@nuance.com> wrote:
> [..]
>
> **1) **Based on the RFC 2608, the user agent may conduct SrvRqst by
> sending a Unicast message to Directory Agent. I am assuming the API would
> be SLPFindSrvs API to do it. Where can I assign the DA IP/Hostname for
> Unicast message?
>
I don't know if there's a way to force this through the api or slp.conf. I
couldn't find it, offhand. The library looks for Directory agents via
multicast, and will unicast to the DAs found. Barring discovery of a DA,
the library will multicast the queries.
> ****
>
> **2) **Does slpd process has to be installed one very machine in
> order to make Service Registration and Service Request? If not, how to
> specific the IP address for remote SA/DA to register service and service
> request?
>
Yes, the slpd process needs to be installed on every machine. The library
connects to the process via loopback to do all Service Registrations. slpd
is not needed for Service Requests. One reason slpd needs to be running is
because the slp protocol requires listening on well-known IP ports (e.g.
427) which may not be shared between processes. So the processes need the
central service to handle slp.
> ****
>
> **3) **If the process calling the SLPReg terminated, does service
> registration will be cleared from the SA/DA?
>
This can be turned on for local registrations with the
net.slp.watchRegistrationPID setting in slp.conf. For remote
registrations, the timeouts are the only guarantee the service will be
cleared.
--Nick
> **
>
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