WIP

peer/on_tick.go

@@ -0,0 +1,50 @@
+package peer
+
+import (
+	"log"
+	"time"
+
+	"vppn/peer/control"
+)
+
+func (a *App) onTick() {
+	wgPeers := a.devPeers()
+
+	a.nextPingID++
+	now := time.Now().UnixNano()
+
+	// Update Up values.
+	for _, p := range a.peersByKey {
+		p.Up = p.Alive()
+	}
+
+	for _, wgPeer := range wgPeers {
+		p, ok := a.peersByKey[wgPeer.PublicKey]
+		if !ok {
+			log.Fatalf("Wireguard peer not in index: %v", wgPeer)
+		}
+
+		// Send pings to peers where we're the client.
+		if p.Role == control.Client {
+			a.sendPing(p, a.nextPingID, now)
+		}
+
+		// Promote probing peers to direct once alive (direct path confirmed
+		// working).
+		if p.State == StateProbing && time.Since(wgPeer.LastHandshakeTime) < 2*PingInterval {
+			p.State = StateDirect
+			a.devAddDirect(p, p.WGEndpoint)
+		}
+
+		// Demote stale non-public direct peers back to probing.
+		if p.State == StateDirect && !p.IsPublic && !p.Up {
+			p.State = StateProbing
+			a.devAddProbe(p, p.WGEndpoint)
+		}
+	}
+
+	// Ensure we have a live relay.
+	if a.relay == nil || !a.relay.Up {
+		a.switchActiveRelay()
+	}
+}