[Opensim-users] LSL HTTP server is slow (part II)

[Jeff Kelley]

At 10:21 PM +0100 1/15/16, Tom Frost wrote:

>Wouldn't dispatching commands coming in from http over chat and
>MessageLinked make things slow again?

MessageLinked and chat are fast enough. We are not targeting 200 
events/sec. ~20/30 are enough for smooth control, that is no 
perceivable discontinuity.

>I must say, i've never considered using incoming http requests.

Once upon a time, we had mail. Then we had XML-RPC. Finally, HTTP in.

In my opinion, HTTP is the most flexible of all when you want to 
shuttle data in and out. The main pain is to track URL's (they change 
each time the sim restarts). You need to register to a database via a 
web service, and resolve names to changing URL's. Thus, an object can 
call the resolver, get the URL of another object (possibly on another 
grid) and initiate a direct communication.

Fun story : when I was scripting on a public grid, my objects were 
inadvertently included in oar's then replicated onto other grids. 
Suddenly, I was receiving registration requests from unknown grids. 
Since that, I have included a remote kill feature.

>The in-world scripts I made that need interaction outside of the sim are
>low-frequency and generally pull-based.

I'm a real-time guy, so I was interested from the beginning to push 
the limits. Years ago, I was using UDP and C# scripts to communicate. 
I'm doing all over HTTP now.

>Curious to see though, where you're endeavours are going to lead :)

This is opensimulator, so we are probably going to simulate 
something. Maybe a factory, a nuclear plant, an industrial process, a 
physics experiment... We want things that work when we act on them. 
And we want nice control panels, dont' we? The time of prim buttons 
and xyText is over. Design in HTML and cast it inside opensim.



-- Jeff