On 05/02/2011 02:15 PM, Toni Alatalo wrote:
On May 2, 2011, at 7:32 AM, Karl Haas wrote:
I want to write an external service which manages all rooms of an
organisation (just a proof of concept). It should be possible to
connect also other virtual worlds or also a real world room
management tool. The management service has to be able to send a room
configuration to the OpenSim region module at a scheduled time (room
reservation) and the region module has to send the content or
position of the objects to the management service. It should be
possible to save the state of the learning session for later
continuation. Therefore I need a two way communication.
I'm not sure how I'd do that two way conn. HTTP of course has been
fashionable for the past >10 years, and it would be possible to just
make either side poll with that. But for realtime 2-way comms
something over a TCP socket that stays open might be better, both
faster and more reliable. That's why web browsers have now gotten
websockets support too -- so that apps like gmail can better get
notifications from servers, instead of doing periodic http polls.
I don't want to implement a polling mechanism - i think i will implement
some kind of socket connection that stays open.
If you only need the sim -> manager comms for the saving, and you need
to save the full state of an opensim scene, I'd use that builtin xml
saving to files and then just store/transfer those files. Could send
the file over, e.g. with HTTP post, or with the possible custom TCP
protocol somehow.
I'm thinking about a solution that allows to continue the session within
a different environment. Therefore i just want to store the size, the
position and the content of objects. How to recreate the object should
be up to the environment (e.g. the region module). I'm not sure which
limitations and drawbacks this will cause, but the main goal of the work
is to learn more about the available technologies.
If there's some project page / plans for your tool, and if it becomes
available as open source later, I'd like to keep posted .. perhaps we
could utilize it, even. The guys have now been porting some of the TOY
tools for Tundra too, there is a public demo server of that up
actually .. if you wanna see how the lobby scene looks like, press
'try it' in http://www.realxtend.org/ (need Tundra 1.0.6 installed,
the download button there points there). The floating round platforms
in that public lobby are same/similar elements which we use for room
configurations in the classroom spaces .. I put a screenshot of that
scene, made for school kids originally, yesterday to
http://wiki.realxtend.org/index.php/Getting_Started_with_Tundra . That
instance is not running on opensim, but the same scene & tools as we
have for opensim too .. so as you plan to allow usage of the config
tool with any server, should work for Tundra usage as well (it
supports modules, similar to region/app/whatever modules in Opensim,
but no .net currently .. c++, python and javascript is what works now,
can do http or custom tcp or whatever).
Thanks for your input - i don't know yet how much i can implement within
my master's thesis and if somebody will continue the project...
Karl
~Toni
Karl Haas
~Toni
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