replace deprecated method

dialer/ssh/metadata.go

@@ -1,7 +1,7 @@
 package ssh
 
 import (
-	"io/ioutil"
+	"os"
 	"time"
 
 	mdata "github.com/go-gost/core/metadata"
@@ -26,7 +26,7 @@ func (d *sshDialer) parseMetadata(md mdata.Metadata) (err error) {
 	)
 
 	if key := mdutil.GetString(md, privateKeyFile); key != "" {
-		data, err := ioutil.ReadFile(key)
+		data, err := os.ReadFile(key)
 		if err != nil {
 			return err
 		}

dialer/sshd/metadata.go

@@ -1,7 +1,7 @@
 package sshd
 
 import (
-	"io/ioutil"
+	"os"
 	"time"
 
 	mdata "github.com/go-gost/core/metadata"
@@ -26,7 +26,7 @@ func (d *sshdDialer) parseMetadata(md mdata.Metadata) (err error) {
 	)
 
 	if key := mdutil.GetString(md, privateKeyFile); key != "" {
-		data, err := ioutil.ReadFile(key)
+		data, err := os.ReadFile(key)
 		if err != nil {
 			return err
 		}

handler/http2/handler.go

@@ -10,7 +10,6 @@ import (
 	"fmt"
 	"hash/crc32"
 	"io"
-	"io/ioutil"
 	"net"
 	"net/http"
 	"net/http/httputil"
@@ -149,7 +148,7 @@ func (h *http2Handler) roundTrip(ctx context.Context, w http.ResponseWriter, req
 		ProtoMajor: 2,
 		ProtoMinor: 0,
 		Header:     http.Header{},
-		Body:       ioutil.NopCloser(bytes.NewReader([]byte{})),
+		Body:       io.NopCloser(bytes.NewReader([]byte{})),
 	}
 
 	if !h.authenticate(ctx, w, req, resp, log) {

handler/socks/v5/udp.go

@@ -5,7 +5,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
 	"time"
 
@@ -77,7 +76,7 @@ func (h *socks5Handler) handleUDP(ctx context.Context, conn net.Conn, log logger
 
 	t := time.Now()
 	log.Debugf("%s <-> %s", conn.RemoteAddr(), cc.LocalAddr())
-	io.Copy(ioutil.Discard, conn)
+	io.Copy(io.Discard, conn)
 	log.WithFields(map[string]any{"duration": time.Since(t)}).
 		Debugf("%s >-< %s", conn.RemoteAddr(), cc.LocalAddr())
 

handler/ss/handler.go

@@ -3,7 +3,6 @@ package ss
 import (
 	"context"
 	"io"
-	"io/ioutil"
 	"net"
 	"time"
 
@@ -92,7 +91,7 @@ func (h *ssHandler) Handle(ctx context.Context, conn net.Conn, opts ...handler.H
 	addr := &gosocks5.Addr{}
 	if _, err := addr.ReadFrom(conn); err != nil {
 		log.Error(err)
-		io.Copy(ioutil.Discard, conn)
+		io.Copy(io.Discard, conn)
 		return err
 	}
 

internal/util/ssh/ssh.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"os"
 
 	"github.com/go-gost/core/auth"
 	"golang.org/x/crypto/ssh"
@@ -58,7 +58,7 @@ func PublicKeyCallback(keys map[string]bool) PublicKeyCallbackFunc {
 
 // ParseSSHAuthorizedKeysFile parses ssh authorized keys file.
 func ParseAuthorizedKeysFile(name string) (map[string]bool, error) {
-	authorizedKeysBytes, err := ioutil.ReadFile(name)
+	authorizedKeysBytes, err := os.ReadFile(name)
 	if err != nil {
 		return nil, err
 	}

internal/util/tls/tls.go

@@ -4,8 +4,8 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"errors"
-	"io/ioutil"
 	"net"
+	"os"
 	"time"
 
 	"github.com/go-gost/core/logger"
@@ -114,7 +114,7 @@ func loadCA(caFile string) (cp *x509.CertPool, err error) {
 		return
 	}
 	cp = x509.NewCertPool()
-	data, err := ioutil.ReadFile(caFile)
+	data, err := os.ReadFile(caFile)
 	if err != nil {
 		return nil, err
 	}

listener/dns/listener.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/base64"
 	"errors"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 	"strings"
@@ -164,7 +164,7 @@ func (l *dnsListener) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 
-		buf, err = ioutil.ReadAll(r.Body)
+		buf, err = io.ReadAll(r.Body)
 		if err != nil {
 			l.logger.Error(err)
 			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

listener/ssh/metadata.go

@@ -1,7 +1,7 @@
 package ssh
 
 import (
-	"io/ioutil"
+	"os"
 
 	mdata "github.com/go-gost/core/metadata"
 	mdutil "github.com/go-gost/core/metadata/util"
@@ -28,7 +28,7 @@ func (l *sshListener) parseMetadata(md mdata.Metadata) (err error) {
 	)
 
 	if key := mdutil.GetString(md, privateKeyFile); key != "" {
-		data, err := ioutil.ReadFile(key)
+		data, err := os.ReadFile(key)
 		if err != nil {
 			return err
 		}

listener/sshd/metadata.go

@@ -1,7 +1,7 @@
 package ssh
 
 import (
-	"io/ioutil"
+	"os"
 
 	mdata "github.com/go-gost/core/metadata"
 	mdutil "github.com/go-gost/core/metadata/util"
@@ -28,7 +28,7 @@ func (l *sshdListener) parseMetadata(md mdata.Metadata) (err error) {
 	)
 
 	if key := mdutil.GetString(md, privateKeyFile); key != "" {
-		data, err := ioutil.ReadFile(key)
+		data, err := os.ReadFile(key)
 		if err != nil {
 			return err
 		}

resolver/exchanger/exchanger.go

@@ -5,7 +5,7 @@ import (
 	"context"
 	"crypto/tls"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 	"net/url"
@@ -172,7 +172,7 @@ func (ex *exchanger) dohExchange(ctx context.Context, msg []byte) ([]byte, error
 	}
 
 	// Read wireformat response from the body
-	buf, err := ioutil.ReadAll(resp.Body)
+	buf, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read the response body: %w", err)
 	}