[Udpcast] updating video files via UDP cast???

[Donald Teed]

I don't know if udpcast would fit in your environment in terms
of how you hope to remotely control the client PCs.  Say if they
are running Windows, you would need to reboot them to boot
from floppy/cdrom/network to do the update.

Udpcast operates on partitions, not files.  But if you
wanted to put all of the video in one partition (say
E: drive, aka /dev/hda3) it could be updated that way.

Udpcast will timeout after a fixed amount of time if
no packets are being acknowledged.  Any PCs which
are still getting packets will continue after this
brief pause to wait for the failing client(s), and the
ones failing to get packets will be disconnected from the imaging
session.  I believe the timeout is 2 minutes, but this
is obviously configurable since one can edit the source.

I would have thought people riding in a gondola would look at the
marvelous view, not a video?

--Donald Teed


On Mon, 20 Sep 2004, Jeff Gladnick wrote:

> I am doing a little research for an R&D project, and I wanted to see if I 
> could use UDP cast to meet my needs.  I just discovered it 15 minutes ago, 
> scoured the site for docs, and read everything i could.  So please bear with 
> me :).
>
> I will have to remotely control 15-30 PC's.  All will be identical, and each 
> will have a wireless router attached to a lan card (on the computer).  Each 
> PC will play video, and may take some basic I/O fuctions in the near future.
>
> The pc's will be located inside of a gondola, like at a ski resort. There 
> will be one computer at the bottom of the gondola line (in the little lift 
> shack) that will be controlling the whole system.  This computer will be 
> hooked up to the internet, and can be accessed remotely in order to update 
> the entire system.
>
> It is my impression, that the wifi network may not be able to be completely 
> in touch with each other at all times.  Most gondola lines are about 
> 4000-8000 feet in length, but can get as high as 14000 feet long in extreme 
> cases.  I understand that I may be limited to a few "hops" over the wifi 
> routers.
>
> Questions:
>
> 1) Can UDP facilitate the updating of just certain files (all identical) to 
> all pc's on the network.  Say, replace video1.mpg with video1.mpg (a new 
> file)
>
> 2) If some pc's are out of range of bottom wifi router, what will happen when 
> the update is attempted?
>
>
>
> -- 
> Jeff Gladnick
>
> _______________________________________________
> Udpcast mailing list
> Udpcast at udpcast.linux.lu
> http://udpcast.linux.lu/mailman/listinfo/udpcast
>
>