Fix lint errors

transport/v2raygrpc/client.go

@@ -10,7 +10,6 @@ import (
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/tls"
 	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing/common"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 
@@ -100,7 +99,7 @@ func (c *Client) DialContext(ctx context.Context) (net.Conn, error) {
 		return nil, err
 	}
 	client := NewGunServiceClient(clientConn).(GunServiceCustomNameClient)
-	ctx, cancel := common.ContextWithCancelCause(ctx)
+	ctx, cancel := context.WithCancelCause(ctx)
 	stream, err := client.TunCustomName(ctx, c.serviceName)
 	if err != nil {
 		cancel(err)

transport/v2raygrpc/credentials/credentials.go

@@ -25,12 +25,12 @@ import (
 type requestInfoKey struct{}
 
 // NewRequestInfoContext creates a context with ri.
-func NewRequestInfoContext(ctx context.Context, ri interface{}) context.Context {
+func NewRequestInfoContext(ctx context.Context, ri any) context.Context {
 	return context.WithValue(ctx, requestInfoKey{}, ri)
 }
 
 // RequestInfoFromContext extracts the RequestInfo from ctx.
-func RequestInfoFromContext(ctx context.Context) interface{} {
+func RequestInfoFromContext(ctx context.Context) any {
 	return ctx.Value(requestInfoKey{})
 }
 
@@ -39,11 +39,11 @@ func RequestInfoFromContext(ctx context.Context) interface{} {
 type clientHandshakeInfoKey struct{}
 
 // ClientHandshakeInfoFromContext extracts the ClientHandshakeInfo from ctx.
-func ClientHandshakeInfoFromContext(ctx context.Context) interface{} {
+func ClientHandshakeInfoFromContext(ctx context.Context) any {
 	return ctx.Value(clientHandshakeInfoKey{})
 }
 
 // NewClientHandshakeInfoContext creates a context with chi.
-func NewClientHandshakeInfoContext(ctx context.Context, chi interface{}) context.Context {
+func NewClientHandshakeInfoContext(ctx context.Context, chi any) context.Context {
 	return context.WithValue(ctx, clientHandshakeInfoKey{}, chi)
 }

transport/v2raygrpc/credentials/util.go

@@ -20,16 +20,15 @@ package credentials
 
 import (
 	"crypto/tls"
+	"slices"
 )
 
 const alpnProtoStrH2 = "h2"
 
 // AppendH2ToNextProtos appends h2 to next protos.
 func AppendH2ToNextProtos(ps []string) []string {
-	for _, p := range ps {
-		if p == alpnProtoStrH2 {
-			return ps
-		}
+	if slices.Contains(ps, alpnProtoStrH2) {
+		return ps
 	}
 	ret := make([]string, 0, len(ps)+1)
 	ret = append(ret, ps...)

transport/v2raygrpc/server.go

@@ -60,7 +60,7 @@ func (s *Server) Tun(server GunService_TunServer) error {
 	if grpcMetadata, loaded := gM.FromIncomingContext(server.Context()); loaded {
 		forwardFrom := strings.Join(grpcMetadata.Get("X-Forwarded-For"), ",")
 		if forwardFrom != "" {
-			for _, from := range strings.Split(forwardFrom, ",") {
+			for from := range strings.SplitSeq(forwardFrom, ",") {
 				originAddr := M.ParseSocksaddr(from)
 				if originAddr.IsValid() {
 					source = originAddr.Unwrap()