Re: [Openslp-users] How to use SLP in GUI apps

[Tim J. <ml...@tj...>]

On Monday 22 July 2002 17:23, you wrote:
> You're probably noticing that it takes considerably longer than this right?

Thanks for your elaborate answer!


> Leave the SLPHandle open
> -------------------------
> The first is that you should open the SLPHandle and leave it open until you
> are finished making SLP calls.  This allows the library to cache the DA

Yes, I keep the handle open, but unfortunately this does not help when the app 
starts and the user browses for the first time. 


> Make some changes to /etc/slp.conf
> -----------------------------------
> Change the net.slp.multicastTimeouts and net.slp.DADiscoveryTimeouts
> settings. I have not done too much research to find the best default
> values, but I expect that for a LAN environment it would be safe to use
> something like "250,250,500,500,1000,2000".  This would significantly
> reduce the timeouts. In your case you'd probably see the 3.75 + 1.25 *
> num_services reduced to 1.5 + .5 * num_services.

The problem is that this would solve the problem for me, but not for most 
users. The applications will appear in KDE 3.1 (krfb/desktop sharing and 
krdc/remote desktop connection) and I cannot assume that all users will edit 
their slp.conf. Unless it is the default, or the distributor makes it the 
default, it does not have any effect.


> Encode some of the information in the service URL
> -------------------------------------------------
> The service URL syntax allows quite a bit of flexability for developers to
> put some information into the URL directly.  Many developers choose to put
>    service:myservice.x://myhost.mydomain.com:500;description=mattsservice

This is what I am currently considering: I could just append all attributes to 
the URL. Right now I have only three attributes, so I wont break the MTU 
barrier.


> Use a DA
> ---------
> DAs are very easy to set up.  For applications like yours that produce a
> fair amount of SLP multicast traffic, they provide a dramatic improvement
> in SLP performance.

Yes, but DAs require at least some SLP knowledge from the user. I can expect 
that in a larger company network, but not in most home or ad-hoc networks.

bye...