cleanup code (fatedier#4019)

pkg/config/types/types.go

@@ -45,15 +45,6 @@ func NewBandwidthQuantity(s string) (BandwidthQuantity, error) {
 	return q, nil
 }
 
-func MustBandwidthQuantity(s string) BandwidthQuantity {
-	q := BandwidthQuantity{}
-	err := q.UnmarshalString(s)
-	if err != nil {
-		panic(err)
-	}
-	return q
-}
-
 func (q *BandwidthQuantity) Equal(u *BandwidthQuantity) bool {
 	if q == nil && u == nil {
 		return true

pkg/msg/ctl.go

@@ -42,7 +42,3 @@ func ReadMsgInto(c io.Reader, msg Message) (err error) {
 func WriteMsg(c io.Writer, msg interface{}) (err error) {
 	return msgCtl.WriteMsg(c, msg)
 }
-
-func Pack(msg interface{}) (data []byte, err error) {
-	return msgCtl.Pack(msg)
-}

pkg/util/net/http.go

@@ -24,30 +24,6 @@ import (
 	"github.com/fatedier/frp/pkg/util/util"
 )
 
-type HTTPAuthWrapper struct {
-	h      http.Handler
-	user   string
-	passwd string
-}
-
-func NewHTTPBasicAuthWrapper(h http.Handler, user, passwd string) http.Handler {
-	return &HTTPAuthWrapper{
-		h:      h,
-		user:   user,
-		passwd: passwd,
-	}
-}
-
-func (aw *HTTPAuthWrapper) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	user, passwd, hasAuth := r.BasicAuth()
-	if (aw.user == "" && aw.passwd == "") || (hasAuth && user == aw.user && passwd == aw.passwd) {
-		aw.h.ServeHTTP(w, r)
-	} else {
-		w.Header().Set("WWW-Authenticate", `Basic realm="Restricted"`)
-		http.Error(w, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized)
-	}
-}
-
 type HTTPAuthMiddleware struct {
 	user          string
 	passwd        string

pkg/util/net/websocket.go

@@ -4,7 +4,6 @@ import (
 	"errors"
 	"net"
 	"net/http"
-	"strconv"
 
 	"golang.org/x/net/websocket"
 )
@@ -50,15 +49,6 @@ func NewWebsocketListener(ln net.Listener) (wl *WebsocketListener) {
 	return
 }
 
-func ListenWebsocket(bindAddr string, bindPort int) (*WebsocketListener, error) {
-	tcpLn, err := net.Listen("tcp", net.JoinHostPort(bindAddr, strconv.Itoa(bindPort)))
-	if err != nil {
-		return nil, err
-	}
-	l := NewWebsocketListener(tcpLn)
-	return l, nil
-}
-
 func (p *WebsocketListener) Accept() (net.Conn, error) {
 	c, ok := <-p.acceptCh
 	if !ok {

pkg/util/util/util.go

@@ -47,16 +47,6 @@ func RandIDWithLen(idLen int) (id string, err error) {
 	return id[:idLen], nil
 }
 
-// RandIDWithRandLen return a rand string with length between [start, end).
-func RandIDWithRandLen(start, end int) (id string, err error) {
-	if start >= end {
-		err = fmt.Errorf("start should be less than end")
-		return
-	}
-	idLen := mathrand.Intn(end-start) + start
-	return RandIDWithLen(idLen)
-}
-
 func GetAuthKey(token string, timestamp int64) (key string) {
 	md5Ctx := md5.New()
 	md5Ctx.Write([]byte(token))

pkg/util/util/util_test.go

@@ -14,48 +14,6 @@ func TestRandId(t *testing.T) {
 	assert.Equal(16, len(id))
 }
 
-func TestRandIDWithRandLen(t *testing.T) {
-	tests := []struct {
-		name      string
-		start     int
-		end       int
-		expectErr bool
-	}{
-		{
-			name:      "start and end are equal",
-			start:     5,
-			end:       5,
-			expectErr: true,
-		},
-		{
-			name:      "start is less than end",
-			start:     5,
-			end:       10,
-			expectErr: false,
-		},
-		{
-			name:      "start is greater than end",
-			start:     10,
-			end:       5,
-			expectErr: true,
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			assert := assert.New(t)
-			id, err := RandIDWithRandLen(tt.start, tt.end)
-			if tt.expectErr {
-				assert.Error(err)
-			} else {
-				assert.NoError(err)
-				assert.GreaterOrEqual(len(id), tt.start)
-				assert.Less(len(id), tt.end)
-			}
-		})
-	}
-}
-
 func TestGetAuthKey(t *testing.T) {
 	assert := assert.New(t)
 	key := GetAuthKey("1234", 1488720000)

pkg/util/version/version.go

@@ -14,34 +14,8 @@
 
 package version
 
-import (
-	"strconv"
-	"strings"
-)
-
 var version = "0.54.0"
 
 func Full() string {
 	return version
 }
-
-func getSubVersion(v string, position int) int64 {
-	arr := strings.Split(v, ".")
-	if len(arr) < 3 {
-		return 0
-	}
-	res, _ := strconv.ParseInt(arr[position], 10, 64)
-	return res
-}
-
-func Proto(v string) int64 {
-	return getSubVersion(v, 0)
-}
-
-func Major(v string) int64 {
-	return getSubVersion(v, 1)
-}
-
-func Minor(v string) int64 {
-	return getSubVersion(v, 2)
-}

pkg/util/wait/backoff.go

@@ -16,7 +16,6 @@ package wait
 
 import (
 	"math/rand"
-	"sync"
 	"time"
 
 	"github.com/fatedier/frp/pkg/util/util"
@@ -174,21 +173,3 @@ func Until(f func(), period time.Duration, stopCh <-chan struct{}) {
 		return period
 	}), true, stopCh)
 }
-
-func MergeAndCloseOnAnyStopChannel[T any](upstreams ...<-chan T) <-chan T {
-	out := make(chan T)
-	closeOnce := sync.Once{}
-	for _, upstream := range upstreams {
-		ch := upstream
-		go func() {
-			select {
-			case <-ch:
-				closeOnce.Do(func() {
-					close(out)
-				})
-			case <-out:
-			}
-		}()
-	}
-	return out
-}