Update to go1.22

Co-authored-by: Julien Salleyron <julien.salleyron@gmail.com>

pkg/server/configurationwatcher_test.go

@@ -2,7 +2,7 @@ package server
 
 import (
 	"context"
-	"fmt"
+	"errors"
 	"strconv"
 	"sync"
 	"testing"
@@ -30,7 +30,7 @@ func (p *mockProvider) Provide(configurationChan chan<- dynamic.Message, _ *safe
 	}
 
 	if len(p.messages) == 0 {
-		return fmt.Errorf("no messages available")
+		return errors.New("no messages available")
 	}
 
 	configurationChan <- p.messages[0]

pkg/server/router/tcp/router_test.go

@@ -171,9 +171,11 @@ func Test_Routing(t *testing.T) {
 		map[string]traefiktls.Store{},
 		map[string]traefiktls.Options{
 			"default": {
+				MinVersion: "VersionTLS10",
 				MaxVersion: "VersionTLS10",
 			},
 			"tls10": {
+				MinVersion: "VersionTLS10",
 				MaxVersion: "VersionTLS10",
 			},
 			"tls12": {

pkg/server/server_entrypoint_tcp.go

@@ -381,7 +381,7 @@ func writeCloser(conn net.Conn) (tcp.WriteCloser, error) {
 	case *proxyproto.Conn:
 		underlying, ok := typedConn.TCPConn()
 		if !ok {
-			return nil, fmt.Errorf("underlying connection is not a tcp connection")
+			return nil, errors.New("underlying connection is not a tcp connection")
 		}
 		return &writeCloserWrapper{writeCloser: underlying, Conn: typedConn}, nil
 	case *net.TCPConn:
@@ -632,7 +632,6 @@ func createHTTPServer(ctx context.Context, ln net.Listener, configuration *stati
 			MaxConcurrentStreams: uint32(configuration.HTTP2.MaxConcurrentStreams),
 			NewWriteScheduler:    func() http2.WriteScheduler { return http2.NewPriorityWriteScheduler(nil) },
 		})
-
 		if err != nil {
 			return nil, fmt.Errorf("configure HTTP/2 server: %w", err)
 		}

pkg/server/service/loadbalancer/wrr/wrr.go

@@ -4,9 +4,9 @@ import (
 	"container/heap"
 	"context"
 	"errors"
-	"fmt"
 	"hash/fnv"
 	"net/http"
+	"strconv"
 	"sync"
 
 	"github.com/traefik/traefik/v2/pkg/config/dynamic"
@@ -156,7 +156,7 @@ func (b *Balancer) nextServer() (*namedHandler, error) {
 	defer b.handlersMu.Unlock()
 
 	if len(b.handlers) == 0 {
-		return nil, fmt.Errorf("no servers in the pool")
+		return nil, errors.New("no servers in the pool")
 	}
 	if len(b.status) == 0 {
 		return nil, errNoAvailableServer
@@ -252,5 +252,5 @@ func hash(input string) string {
 	// We purposely ignore the error because the implementation always returns nil.
 	_, _ = hasher.Write([]byte(input))
 
-	return fmt.Sprintf("%x", hasher.Sum64())
+	return strconv.FormatUint(hasher.Sum64(), 16)
 }