[Xastir] UDP frames

Curt, WE7U archer at eskimo.com
Mon Jan 10 14:07:27 EST 2005


On Mon, 10 Jan 2005, Wes Johnston wrote:

> Heck, lets pick UDP port 14439 ....
>
> That _is_ different than TCP 14439, right?  so if an internet server using
> connected frames were to exist on 14439, it would be TCP mode, and therefore
> different.

You can have separate UDP and TCP servers at the same port number,
near as I can tell.  The /etc/services file is full of examples of
that, but I've never actually tried coding up something to test
that.


> Jason, you got it!  802.11 stuff is cheaper than 2m radios and TNCs, even if we
> had to have 3 a/points at a site.... imagine... a point to point link of these
> systems in a town... alternating between channels 1 and 6 (because they are in
> the ham band, and we can run higher power there with the MAC address set to our
> 6digit callsign ascii codes), and channel 11 set aside as a user port.  Users
> wandering around town with PDAs would always be on channel 11 and would wander
> in and out of coverage areas.
>
> Or if topography permitted, you could do a hub and spoke with one central node
> transmitting UDP frames on , say channel 1 to all other nodes (nodes with
> beams) and the downstream nodes would have one access point for rx/tx with the
> main node and a 2nd AP for the clients to use on channel 11.
>
> Hi hihi... it'd work with winlink (err POP and SMTP) too... hee hee... on the
> same "channel"...

Might as well throw OpenTrac in the mix too.  ;-)

--
Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
"Lotto:    A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me:  I picked the coordinate system!"



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