Re: [Flightgear-devel] Multi-window display

[John W. <ca...@mm...>]

Alex writes:

> Have you checked whether the OS is actually doing the broadcasts using
another
> program to send and receive the packets ?  I've had some Windows machines
that
> have ignored my specification of the broadcast address and used their own.
> As a result, the address I thought I had to use for broadcast ... didn't.
>
That's a good point. I've got windows95 (2), ME (1) , 2000 (1) and linux (1)
on four
machines I'll try a variety of mixes for servers and clients and see what
happens. The network
functions are built into the linux kernel. I have no idea what Gates and MS
have done! Not
sure I want to find out  ;-)

> In the short term, try just repeating the native-out parameter and use
> point-to-point UDP links for every client until you have everything else
> working.  Less efficient for the server, but probably not enough to care.

Not sure I follow ... would you restart fgfs each time with a new "out"
address
for each client (in this case three). The socket 5500 binds to the IP
address
when the socket in instantiated, you would have to create additional
socket/port
bindings inside fgfs to do this simultaneously. I have had the 3 "server"
(sometimes 4 when I can "steal" the spouse's) machines receiving datagrams
so
network connectivity appeares okay. I have not tried to run any of these
machines
as the client. that might be worth a look.

Based on the results of running some tests with Norm's socktest and some
utilities I have
the data send by the client (the one running the fdm) is getting on the LAN
with the
correct IP address, whether unique or broadcast. I'll try your suggestions
and then
follow the "cookie crumb trail" and see if I can find where and how the bits
get from
point A to B.

BTW: An interesting aspect of this feature (I'm sure some one has thought of
it) is that if you could
drive the 3d aircraft models with an external source then two or more
players could
then fly "formation" with each other.


Regards
Jack W

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