Roman,
This was dicussed earlier on this list.
I found one disdavantage of using multicast. My packet size or structure
kept growing as I added more computers on the network that are **not** image
generators but pcs used as flight test engineer station or fcs monitoring
station etc. Why should image generators receive data that is not intended
for it and vice versa. So I find non-blocking udp fast enough while
maintaining packet sizes to the minmum required and I suppose bandwidth
requirements are not too high to cause perceptible delays.
Regards
Ranga


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Jonathan
Polley
Sent: Friday, February 01, 2002 7:16 AM
To: [EMAIL PROTECTED]
Subject: Re: [Flightgear-devel] Urgent: Network and external flight
model


David,

        At work, I run a proprietary FDM on a Sun Workstation and feed the
data to FlightGear.  I use the '--fdm=external' and '--native_fdm=...'
options (--native_fmd= uses the same parameters as --native).  I did
make some changes to Network/native_fdm.cxx to properly manage the
byte-order issues, but it works like a champ.  IMHO, --native_fdm= has a
cleaner interface than does --native=.  To see the data structure that
the FDM needs to generate, look in  Network/raw_fdm.hxx.

Jonathan Polley

p.s.  I have submitted my edits.

On Thursday, January 31, 2002, at 06:37 PM, David Findlay wrote:

> Just checking a couple of details - you can run an external flight
> model on a
> machine other than the one running FGFS right? Thanks,
>
> David
>
> _______________________________________________
> Flightgear-devel mailing list
> [EMAIL PROTECTED]
> http://mail.flightgear.org/mailman/listinfo/flightgear-devel


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