Added parsing of IPv6 addresses for incomming mDNS requests

p2p/discovery/mdns.go

@@ -157,7 +157,7 @@ func (m *mdnsService) pollForEntries(ctx context.Context) {
 }
 
 func (m *mdnsService) handleEntry(e *mdns.ServiceEntry) {
-	log.Debugf("Handling MDNS entry: %s:%d %s", e.AddrV4, e.Port, e.Info)
+	log.Debugf("Handling MDNS entry: [IPv4 %s][IPv6 %s]:%d %s", e.AddrV4, e.AddrV6, e.Port, e.Info)
 	mpeer, err := peer.IDB58Decode(e.Info)
 	if err != nil {
 		log.Warning("Error parsing peer ID from mdns entry: ", err)
@@ -169,12 +169,27 @@ func (m *mdnsService) handleEntry(e *mdns.ServiceEntry) {
 		return
 	}
 
-	maddr, err := manet.FromNetAddr(&net.TCPAddr{
-		IP:   e.AddrV4,
-		Port: e.Port,
-	})
-	if err != nil {
-		log.Warning("Error parsing multiaddr from mdns entry: ", err)
+	var maddr ma.Multiaddr
+	if e.AddrV4 != nil {
+		maddr, err = manet.FromNetAddr(&net.TCPAddr{
+			IP:   e.AddrV4,
+			Port: e.Port,
+		})
+		if err != nil {
+			log.Warning("Error parsing multiaddr from mdns entry: ", err)
+			return
+		}
+	} else if e.AddrV6 != nil {
+		maddr, err = manet.FromNetAddr(&net.TCPAddr{
+			IP:   e.AddrV6,
+			Port: e.Port,
+		})
+		if err != nil {
+			log.Warning("Error parsing multiaddr from mdns entry: ", err)
+			return
+		}
+	} else {
+		log.Warning("Error parsing multiaddr from mdns entry: no IP address found")
 		return
 	}