[Opensim-dev] DNS lookup and caching

[Michael Heilmann]

Justin

The inability to pass a FQDN to the client is interesting, I did not see 
that.

Doug and I discussed our level of interest in this functionality, and 
your solution.  I will begin work to explore and implement your solution 
immediately.  As I am not a core developer, and in fact this would be my 
first contribution to opensim, I may need some guidance on your normal 
code submission practices.  We (MOSES) have our own git clone of opensim 
master on github that I will be working out of.

-- 
Michael Heilmann
Research Associate
Institute for Simulation and Training
University of Central Florida

> AFAIK, this is because the viewer will not handle FQDN for at least region UDP.  This is most noticeable in the
> TeleportFinishEvent message (see OpenSim/Region/ClientStack/Linden/Caps/EventQueue/EventQueueHelper.cs) where this is
> only a SimIP slot for an IP address, not an FQDN.
>
> I was sufficiently curious to look at why the viewer about message then displays the FQDN of the simulator (e.g.
> sim10088.agni.lindenlab.com).  On inspecting indra/newview/llfloaterabout.cpp in the viewer code it's actually doing a
> reverse lookup from the stored IP address.
>
> One possible solution I've assessed in the past is to have OpenSimulator store different IP addresses that are served
> depending on where the viewer request originated.  Viewers coming from the LAN could be served a LAN IP for the
> simulator and viewers from the WAN a WAN IP.  This would avoid the need for 'loopback' routers.  However, the amount of
> work is not trivial (I think 6-8 weeks for someone who knows the code).