diff --git a/cli/server/server.go b/cli/server/server.go
index 87cc30a02..42a5a7259 100644
--- a/cli/server/server.go
+++ b/cli/server/server.go
@@ -134,6 +134,7 @@ func handleLoggingParams(ctx *cli.Context, cfg config.ApplicationConfiguration)
 	cc.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
 	cc.Encoding = "console"
 	cc.Level = zap.NewAtomicLevelAt(level)
+	cc.Sampling = nil
 
 	if logPath := cfg.LogPath; logPath != "" {
 		if err := io.MakeDirForFile(logPath, "logger"); err != nil {
diff --git a/pkg/network/tcp_transport.go b/pkg/network/tcp_transport.go
index 9739efc9b..58896156e 100644
--- a/pkg/network/tcp_transport.go
+++ b/pkg/network/tcp_transport.go
@@ -82,22 +82,22 @@ func (t *TCPTransport) handleConn(conn net.Conn) {
 	t.server.register <- p
 
 	// When a new peer is connected we send out our version immediately.
-	if err := t.server.sendVersion(p); err != nil {
-		t.log.Error("error on sendVersion", zap.Stringer("addr", p.RemoteAddr()), zap.Error(err))
-	}
-	r := io.NewBinReaderFromIO(p.conn)
-	for {
-		msg := &Message{}
-		err = msg.Decode(r)
+	err = t.server.sendVersion(p)
+	if err == nil {
+		r := io.NewBinReaderFromIO(p.conn)
+		for {
+			msg := &Message{}
+			err = msg.Decode(r)
 
-		if err == payload.ErrTooManyHeaders {
-			t.log.Warn("not all headers were processed")
-			r.Err = nil
-		} else if err != nil {
-			break
-		}
-		if err = t.server.handleMessage(p, msg); err != nil {
-			break
+			if err == payload.ErrTooManyHeaders {
+				t.log.Warn("not all headers were processed")
+				r.Err = nil
+			} else if err != nil {
+				break
+			}
+			if err = t.server.handleMessage(p, msg); err != nil {
+				break
+			}
 		}
 	}
 	t.server.unregister <- peerDrop{p, err}
diff --git a/pkg/rpc/server.go b/pkg/rpc/server.go
index 83c46e52d..3bc5cd451 100644
--- a/pkg/rpc/server.go
+++ b/pkg/rpc/server.go
@@ -99,7 +99,7 @@ func (s *Server) requestHandler(w http.ResponseWriter, httpRequest *http.Request
 }
 
 func (s *Server) methodHandler(w http.ResponseWriter, req *Request, reqParams Params) {
-	s.log.Info("processing rpc request",
+	s.log.Debug("processing rpc request",
 		zap.String("method", req.Method),
 		zap.String("params", fmt.Sprintf("%v", reqParams)))