Re: find all computers in LAN submask

Gernot Frisch wrote:
Hi,

we're working on a game for a handheld device, running linux.
We want a network mode, where each client automatically finds the
"server" conputer in LAN. So, my idea was to get a list of all
responding ip addresses and query each one if the server program is up.

Usually you do some kind of registration and the client does a look up
for the service. Things like openslp (slpd) etc, are some examples
that servers could use to advertise things. The handheld clients
would query via slp protocol for the server on the network.


However, ping'ing 254 computers seems a dull idea to me.

Assuming a /24 netmask eh? Imagine a /16, etc!! Also, you
cannot assume that a machine will answer a ping request. Or anything
else you might throw at it (especially in this age of firewalls).


What would you advice?

Switch to a mechanism where the client use some kind of Service
Location whatever solution to find the server...

You might have a managed switch on a LAN that can tell you
about some things... but I think that's the WRONG idea.
.

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