[avahi] publish-update problem

[Lennart Poettering]

On Fri, 18.04.08 07:17, Trent Lloyd (lathiat at bur.st) wrote:

>> What seems to happening is that when the browser registers for a service 
>> it gets the value from the cache and then the multicast_lookup is 
>> destroyed before the next update of the record. Are there some flag 
>> settings that can be set to prevent this? I can see the cache_update 
>> function being called but the avahi_multicast_lookup_engine_notify does 
>> nothing since the lookup msg has been removed. Though looking at the code 
>> again subscribers are only notified of CNAME changes, so maybe I am 
>> looking in the wrong place.
>
> Currently a Browser does not respond to TXT updates if you want TXT updates 
> you must keep a running Resolver

Currently? Not just "currently". This is very unlikely to change since
the whole distinction between "resolving" and "browsing" is because we
want to make sure that we don't need to send around all the
(potentially huge) meta information about each service that
might be stored in the TXT data when a client just wants to get a
simple list of services that are available.

So, in short: that browsers don't know about TXT data changes is a
feature, not a bug. For the sake of minimizing traffic.

Lennart

-- 
Lennart Poettering                        Red Hat, Inc.
lennart [at] poettering [dot] net         ICQ# 11060553
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