[avahi] Handling clients that drop out or disconnect

[Daniel Stonier]

Hi,

We have a network that is constantly having nodes (computers) for which a
wireless connection drops out, or the node moves out of wireless range.
When this happens, computers that are still connected will still be able to
browse the missing clients. The problem is in resolving them - sometimes
they can continue to be resolved (is this just using a cached status?) and
sometimes resolving ceases to work.

I've also experimented with a c++ implementation, getting a client to
call avahi_service_resolver_new(...) whenever it wants to check on the
current status, but it is exhibiting similar behaviour (sometimes resolves
sometimes doesn't).

Is there a recommended means of dynamically checking on the resolvable
status of avahi clients on a wireless network in which continuous
connectivity is not guaranteed?

Regards,
Daniel Stonier.
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