fix

pkg/autoscaler/statserver/server.go

@@ -169,7 +169,7 @@ func (s *Server) Handler(w http.ResponseWriter, r *http.Request) {
 		if err != nil {
 			// We close abnormally, because we're just closing the connection in the client,
 			// which is okay. There's no value delaying closure of the connection unnecessarily.
-			if err == io.ErrUnexpectedEOF {
+			if errors.Is(err, io.ErrUnexpectedEOF) {
 				s.logger.Debug("Handler disconnected")
 			} else {
 				s.logger.Errorf("Handler exiting on error: %#v", err)

test/e2e/websocket_test.go

@@ -21,9 +21,10 @@ package e2e
 
 import (
 	"context"
+	"testing"
+
 	"github.com/gobwas/ws"
 	"golang.org/x/sync/errgroup"
-	"testing"
 
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

test/test_images/wsserver/echo.go

@@ -17,6 +17,7 @@ limitations under the License.
 package main
 
 import (
+	"errors"
 	"flag"
 	"io"
 	"log"
@@ -77,7 +78,7 @@ func handler(w http.ResponseWriter, r *http.Request) {
 		if err != nil {
 			// We close abnormally, because we're just closing the connection in the client,
 			// which is okay. There's no value delaying closure of the connection unnecessarily.
-			if err == io.ErrUnexpectedEOF {
+			if errors.Is(err, io.ErrUnexpectedEOF) {
 				log.Println("Client disconnected.")
 			} else {
 				log.Println("Handler exiting on error:", err)