WIP: improve responsiveness.

peer/on_pingticker.go

@@ -0,0 +1,15 @@
+package peer
+
+import (
+	"time"
+	"vppn/peer/control"
+)
+
+func (a *App) onPingTicker() {
+	now := time.Now().UnixNano()
+	for _, p := range a.peersByIP {
+		if p.Role == control.Client {
+			a.sendPing(p, now)
+		}
+	}
+}