using System;

public class PingPong {
movable Ping( (string) => async ping, () => string pong ) {
for ( int i = 0; i async pong, () => string ping ) {
for ( int i = 0; i < 100; i++ ) {
Console.WriteLine( ping() );
pong("pong");
}
}

string Receive() & async Send(string a) { return a; }

public static void Main( string[] args ) {
PingPong pp = new PingPong();
pp.Ping( pp.Send, pp.Receive );
pp.Pong( pp.Send, pp.Receive );
Console.ReadLine();
}
}

It's taken from official distribs, should work in distributed mode as well, but I haven't tested it yet…