diff --git a/core/server/config.go b/core/server/config.go
index 19aae53bd0..a01f478f4d 100644
--- a/core/server/config.go
+++ b/core/server/config.go
@@ -7,10 +7,9 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/apernet/hysteria/core/v2/internal/utils"
-
 	"github.com/apernet/hysteria/core/v2/errors"
 	"github.com/apernet/hysteria/core/v2/internal/pmtud"
+	"github.com/apernet/hysteria/core/v2/internal/utils"
 	"github.com/apernet/quic-go"
 )
 
diff --git a/core/server/copy.go b/core/server/copy.go
index 2f99ae42cf..7123fc89ea 100644
--- a/core/server/copy.go
+++ b/core/server/copy.go
@@ -32,7 +32,7 @@ func copyBufferLog(dst io.Writer, src io.Reader, log func(n uint64) bool) error
 	}
 }
 
-func copyTwoWayWithLogger(id string, serverRw, remoteRw io.ReadWriter, l TrafficLogger, stats *StreamStats) error {
+func copyTwoWayEx(id string, serverRw, remoteRw io.ReadWriter, l TrafficLogger, stats *StreamStats) error {
 	errChan := make(chan error, 2)
 	go func() {
 		errChan <- copyBufferLog(serverRw, remoteRw, func(n uint64) bool {
@@ -52,7 +52,7 @@ func copyTwoWayWithLogger(id string, serverRw, remoteRw io.ReadWriter, l Traffic
 	return <-errChan
 }
 
-// copyTwoWay is the "fast-path" version of copyTwoWayWithLogger that does not log traffic.
+// copyTwoWay is the "fast-path" version of copyTwoWayEx that does not log traffic or update stream stats.
 // It uses the built-in io.Copy instead of our own copyBufferLog.
 func copyTwoWay(serverRw, remoteRw io.ReadWriter) error {
 	errChan := make(chan error, 2)
diff --git a/core/server/server.go b/core/server/server.go
index f7ad957f81..696f1d0956 100644
--- a/core/server/server.go
+++ b/core/server/server.go
@@ -280,7 +280,7 @@ func (h *h3sHandler) handleTCPRequest(stream quic.Stream) {
 	}
 	// Start proxying
 	if trafficLogger != nil {
-		err = copyTwoWayWithLogger(h.authID, stream, tConn, trafficLogger, streamStats)
+		err = copyTwoWayEx(h.authID, stream, tConn, trafficLogger, streamStats)
 	} else {
 		// Use the fast path if no traffic logger is set
 		err = copyTwoWay(stream, tConn)
diff --git a/extras/trafficlogger/http.go b/extras/trafficlogger/http.go
index 87eb919f14..d8e6ebd4f1 100644
--- a/extras/trafficlogger/http.go
+++ b/extras/trafficlogger/http.go
@@ -11,9 +11,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/apernet/quic-go"
-
 	"github.com/apernet/hysteria/core/v2/server"
+	"github.com/apernet/quic-go"
 )
 
 const (