Gob error

DOT requires all value and change types to be registered with encoding/gob to be able to be transmitted across the network.

It is very easy to forget this. A typical encoding error is something like:

gob: type not registered for interface: types.Counter

The solution is to stick the following into both the server and client code:

import "encoding/gob"
func init() {
    var zero types.Counter
    gob.Register(zero)
}