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cell/examples/nat.ce

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// NAT Punchthrough Server
// This server helps two chess clients find each other through NAT
// The server coordinates the punchthrough by having both clients
// connect to each other simultaneously
var json = use('json');
var waiting_client = null;
var match_id = 0;
$_.portal(e => {
log.console("NAT server: received connection request");
if (!is_actor(e.actor))
send(e, {reason: "Must provide the actor you want to connect."});
if (waiting_client) {
log.console(`sending out messages! to ${json.encode(e.actor)} and ${json.encode(waiting_client.actor)}`)
send(waiting_client, e.actor)
send(e, waiting_client.actor)
waiting_client = null
return
}
waiting_client = e
log.console(`actor ${json.encode(e.actor)} is waiting ...`)
}, 4000);