user friendliness in logs + output

net/swarm/swarm_dial.go

@@ -293,7 +293,7 @@ func (s *Swarm) dial(ctx context.Context, p peer.ID) (*Conn, error) {
 	// ok try to setup the new connection.
 	swarmC, err := dialConnSetup(ctx, s, connC)
 	if err != nil {
-		log.Error("Dial newConnSetup failed. disconnecting.")
+		log.Debug("Dial newConnSetup failed. disconnecting.")
 		log.Event(ctx, "dialFailureDisconnect", lgbl.NetConn(connC), lgbl.Error(err))
 		connC.Close() // close the connection. didn't work out :(
 		return nil, err
@@ -398,7 +398,7 @@ func dialConnSetup(ctx context.Context, s *Swarm, connC conn.Conn) (*Conn, error
 	// ok try to setup the new connection. (newConnSetup will add to group)
 	swarmC, err := s.newConnSetup(ctx, psC)
 	if err != nil {
-		log.Error("Dial newConnSetup failed. disconnecting.")
+		log.Debug("Dial newConnSetup failed. disconnecting.")
 		log.Event(ctx, "dialFailureDisconnect", lgbl.NetConn(connC), lgbl.Error(err))
 		psC.Close() // we need to make sure psC is Closed.
 		return nil, err

protocol/identify/id.go

@@ -79,7 +79,7 @@ func (ids *IDService) IdentifyConn(c inet.Conn) {
 
 		// ok give the response to our handler.
 		if err := protocol.WriteHeader(s, ID); err != nil {
-			log.Error("error writing stream header for %s", ID)
+			log.Debugf("error writing stream header for %s", ID)
 			log.Event(context.TODO(), "IdentifyOpenFailed", c.RemotePeer())
 		}
 		ids.ResponseHandler(s)
@@ -118,7 +118,7 @@ func (ids *IDService) ResponseHandler(s inet.Stream) {
 	r := ggio.NewDelimitedReader(s, 2048)
 	mes := pb.Identify{}
 	if err := r.ReadMsg(&mes); err != nil {
-		log.Errorf("%s error receiving message from %s %s %s", ID,
+		log.Debugf("%s error receiving message from %s %s %s", ID,
 			c.RemotePeer(), c.RemoteMultiaddr(), err)
 		return
 	}
@@ -169,7 +169,7 @@ func (ids *IDService) consumeMessage(mes *pb.Identify, c inet.Conn) {
 	for _, addr := range laddrs {
 		maddr, err := ma.NewMultiaddrBytes(addr)
 		if err != nil {
-			log.Errorf("%s failed to parse multiaddr from %s %s", ID,
+			log.Debugf("%s failed to parse multiaddr from %s %s", ID,
 				p, c.RemoteMultiaddr())
 			continue
 		}