changing to UDP protocol for classroom use

[Tim Waugh]

On Fri, Jun 09, 2000 at 08:55:46AM -0400, W. Brian Blevins wrote:

>   - UDP service does not provide for recovery of dropped packets.  So, a
>     mechanism will be needed for clients to rerequest update information
>     that did not make it for some reason.  Although error detection and
>     recovery in packet based networks is not difficult, someone has to
>     make it happen.  I'm not sure how error-recovery is handled on TCP
>     multicast connections.

In general there isn't a good error-recovery protocol.  I'm told that
this is mathematically provable. :-(

For use on a single LAN it's solvable.

Tim.
*/

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