Shut down listeners when stopping

src/yggdrasil/core.go

@@ -194,7 +194,9 @@ func (c *Core) _stop() {
 	if c.addPeerTimer != nil {
 		c.addPeerTimer.Stop()
 	}
+	c.link.stop()
 	for _, peer := range c.GetPeers() {
 		c.DisconnectPeer(peer.Port)
 	}
+	c.log.Infoln("Stopped")
 }

src/yggdrasil/link.go

@@ -134,6 +134,13 @@ func (l *link) create(msgIO linkInterfaceMsgIO, name, linkType, local, remote st
 	return &intf, nil
 }
 
+func (l *link) stop() error {
+	if err := l.tcp.stop(); err != nil {
+		return err
+	}
+	return nil
+}
+
 func (intf *linkInterface) handler() error {
 	// TODO split some of this into shorter functions, so it's easier to read, and for the FIXME duplicate peer issue mentioned later
 	myLinkPub, myLinkPriv := crypto.NewBoxKeys()

src/yggdrasil/tcp.go

@@ -96,6 +96,13 @@ func (t *tcp) init(l *link) error {
 	return nil
 }
 
+func (t *tcp) stop() error {
+	for _, listener := range t.listeners {
+		close(listener.Stop)
+	}
+	return nil
+}
+
 func (t *tcp) reconfigure() {
 	t.link.core.config.Mutex.RLock()
 	added := util.Difference(t.link.core.config.Current.Listen, t.link.core.config.Previous.Listen)