diff --git a/extend/limit/limit.go b/extend/limit/limit.go
index f3cb9bf..c0236c0 100755
--- a/extend/limit/limit.go
+++ b/extend/limit/limit.go
@@ -4,7 +4,6 @@ import (
 	"io"
 
 	frpNet "github.com/fatedier/frp/utils/net"
-	"golang.org/x/time/rate"
 )
 
 const (
@@ -17,35 +16,29 @@ const (
 	EB
 )
 
-const BurstLimit = 1024 * 1024 * 1024
+const burstLimit = 1024 * 1024 * 1024
 
-type Conn struct {
+type LimitConn struct {
 	frpNet.Conn
 
 	lr io.Reader
 	lw io.Writer
 }
 
-func NewLimitConn(maxread, maxwrite uint64, c frpNet.Conn) Conn {
-	return Conn{
-		lr:   NewReaderWithLimit(c, maxread),
-		lw:   NewWriterWithLimit(c, maxwrite),
+func NewLimitConn(maxread, maxwrite uint64, c frpNet.Conn) LimitConn {
+	// 这里不知道为什么要 49 才能对的上真实速度
+	// 49 是根据 wget 速度来取的，测试了 512、1024、2048、4096、8192 等多种速度下都很准确
+	return LimitConn{
+		lr:   NewReaderWithLimit(c, maxread*49),
+		lw:   NewWriterWithLimit(c, maxwrite*49),
 		Conn: c,
 	}
 }
 
-func NewLimitConnWithBucket(c frpNet.Conn, rBucket, wBucket *rate.Limiter) Conn {
-	return Conn{
-		lr:   NewReaderWithLimitWithBucket(c, rBucket),
-		lw:   NewWriterWithLimitWithBucket(c, wBucket),
-		Conn: c,
-	}
-}
-
-func (c Conn) Read(p []byte) (n int, err error) {
+func (c LimitConn) Read(p []byte) (n int, err error) {
 	return c.lr.Read(p)
 }
 
-func (c Conn) Write(p []byte) (n int, err error) {
+func (c LimitConn) Write(p []byte) (n int, err error) {
 	return c.lw.Write(p)
 }
diff --git a/extend/limit/reader.go b/extend/limit/reader.go
index 3d8fc18..cac8fb3 100644
--- a/extend/limit/reader.go
+++ b/extend/limit/reader.go
@@ -31,28 +31,17 @@ func NewReaderWithLimit(r io.Reader, speed uint64) *Reader {
 		ctx: context.Background(),
 		mux: sync.Mutex{},
 	}
-	rr.limiter = rate.NewLimiter(rate.Limit(speed), BurstLimit)
 	rr.SetRateLimit(speed)
 	return rr
 }
 
-func NewReaderWithLimitWithBucket(r io.Reader, bucket *rate.Limiter) *Reader {
-	rr := &Reader{
-		r:       r,
-		ctx:     context.Background(),
-		mux:     sync.Mutex{},
-		limiter: bucket,
-	}
-	return rr
-}
-
 // SetRateLimit sets rate limit (bytes/sec) to the reader.
 func (s *Reader) SetRateLimit(bytesPerSec uint64) {
 	s.mux.Lock()
 	defer s.mux.Unlock()
 
-	// s.limiter = rate.NewLimiter(rate.Limit(bytesPerSec), burstLimit)
-	s.limiter.AllowN(time.Now(), BurstLimit) // spend initial burst
+	s.limiter = rate.NewLimiter(rate.Limit(bytesPerSec), burstLimit)
+	s.limiter.AllowN(time.Now(), burstLimit) // spend initial burst
 }
 
 // Read reads bytes into p.
diff --git a/extend/limit/writer.go b/extend/limit/writer.go
index 2a705a1..628e223 100644
--- a/extend/limit/writer.go
+++ b/extend/limit/writer.go
@@ -31,27 +31,17 @@ func NewWriterWithLimit(w io.Writer, speed uint64) *Writer {
 		ctx: context.Background(),
 		mux: sync.Mutex{},
 	}
-	ww.limiter = rate.NewLimiter(rate.Limit(speed), BurstLimit)
 	ww.SetRateLimit(speed)
 	return ww
 }
-func NewWriterWithLimitWithBucket(w io.Writer, bucket *rate.Limiter) *Writer {
-	ww := &Writer{
-		w:       w,
-		ctx:     context.Background(),
-		mux:     sync.Mutex{},
-		limiter: bucket,
-	}
-	return ww
-}
 
 // SetRateLimit sets rate limit (bytes/sec) to the writer.
 func (s *Writer) SetRateLimit(bytesPerSec uint64) {
 	s.mux.Lock()
 	defer s.mux.Unlock()
 
-	// s.limiter = rate.NewLimiter(rate.Limit(bytesPerSec), burstLimit)
-	s.limiter.AllowN(time.Now(), BurstLimit) // spend initial burst
+	s.limiter = rate.NewLimiter(rate.Limit(bytesPerSec), burstLimit)
+	s.limiter.AllowN(time.Now(), burstLimit) // spend initial burst
 }
 
 // Write writes bytes from p.
diff --git a/server/control.go b/server/control.go
index 78e6ca2..c848c54 100755
--- a/server/control.go
+++ b/server/control.go
@@ -32,7 +32,6 @@ import (
 	"github.com/fatedier/frp/utils/net"
 	frpNet "github.com/fatedier/frp/utils/net"
 	"github.com/fatedier/frp/utils/version"
-	"golang.org/x/time/rate"
 
 	"github.com/fatedier/golib/control/shutdown"
 	"github.com/fatedier/golib/crypto"
@@ -133,8 +132,8 @@ type Control struct {
 	managerShutdown *shutdown.Shutdown
 	allShutdown     *shutdown.Shutdown
 
-	inLimit  *rate.Limiter
-	outLimit *rate.Limiter
+	inLimit  uint64
+	outLimit uint64
 
 	mu sync.RWMutex
 }
@@ -161,8 +160,8 @@ func NewControl(rc *controller.ResourceController, pxyManager *proxy.ProxyManage
 		writerShutdown:  shutdown.New(),
 		managerShutdown: shutdown.New(),
 		allShutdown:     shutdown.New(),
-		inLimit:         rate.NewLimiter(rate.Limit(inLimit*limit.KB), int(inLimit*limit.KB)),
-		outLimit:        rate.NewLimiter(rate.Limit(outLimit*limit.KB), int(outLimit*limit.KB)),
+		inLimit:         inLimit,  //rate.NewLimiter(rate.Limit(inLimit*limit.KB), int(inLimit*limit.KB)),
+		outLimit:        outLimit, //rate.NewLimiter(rate.Limit(outLimit*limit.KB), int(outLimit*limit.KB)),
 	}
 }
 
@@ -458,7 +457,7 @@ func (ctl *Control) RegisterProxy(pxyMsg *msg.NewProxy) (remoteAddr string, err
 			if err != nil {
 				return nil, err
 			}
-			return limit.NewLimitConnWithBucket(fconn, ctl.outLimit, ctl.inLimit), nil
+			return limit.NewLimitConn(ctl.inLimit, ctl.outLimit, fconn), nil
 		}
 	}
 
diff --git a/server/dashboard.go b/server/dashboard.go
index d682aeb..0181a57 100644
--- a/server/dashboard.go
+++ b/server/dashboard.go
@@ -44,6 +44,7 @@ func (svr *Service) RunDashboardServer(addr string, port int) (err error) {
 	router.HandleFunc("/api/proxy/{type}", svr.ApiProxyByType).Methods("GET")
 	router.HandleFunc("/api/proxy/{type}/{name}", svr.ApiProxyByTypeAndName).Methods("GET")
 	router.HandleFunc("/api/traffic/{name}", svr.ApiProxyTraffic).Methods("GET")
+	router.HandleFunc("/api/client/close/{user}", svr.ApiCloseClient).Methods("GET")
 
 	// view
 	router.Handle("/favicon.ico", http.FileServer(assets.FileSystem)).Methods("GET")
diff --git a/server/dashboard_api.go b/server/dashboard_api.go
index dcea7e6..db591df 100644
--- a/server/dashboard_api.go
+++ b/server/dashboard_api.go
@@ -322,3 +322,31 @@ func (svr *Service) ApiProxyTraffic(w http.ResponseWriter, r *http.Request) {
 	buf, _ := json.Marshal(&trafficResp)
 	res.Msg = string(buf)
 }
+
+type CloseUserResp struct {
+	Status int    `json:"status"`
+	Msg    string `json:"message"`
+}
+
+func (svr *Service) ApiCloseClient(w http.ResponseWriter, r *http.Request) {
+	var (
+		buf  []byte
+		resp = CloseUserResp{}
+	)
+	params := mux.Vars(r)
+	user := params["user"]
+	defer func() {
+		log.Info("Http response [/api/client/close/{user}]: code [%d]", resp.Status)
+	}()
+	log.Info("Http request: [/api/client/close/{user}] %#v", user)
+	err := svr.CloseUser(user)
+	if err != nil {
+		resp.Status = 404
+		resp.Msg = err.Error()
+	} else {
+		resp.Status = 200
+		resp.Msg = "OK"
+	}
+	buf, _ = json.Marshal(&resp)
+	w.Write(buf)
+}
diff --git a/server/service.go b/server/service.go
index c93d127..58350dc 100755
--- a/server/service.go
+++ b/server/service.go
@@ -413,10 +413,7 @@ func (svr *Service) RegisterControl(ctlConn frpNet.Conn, loginMsg *msg.Login) (e
 	// If client's RunId is empty, it's a new client, we just create a new controller.
 	// Otherwise, we check if there is one controller has the same run id. If so, we release previous controller and start new one.
 	if loginMsg.RunId == "" {
-		loginMsg.RunId, err = util.RandId()
-		if err != nil {
-			return
-		}
+		loginMsg.RunId = loginMsg.User
 	}
 
 	ctl := NewControl(svr.rc, svr.pxyManager, svr.statsCollector, ctlConn, loginMsg, inLimit, outLimit)
@@ -475,3 +472,12 @@ func generateTLSConfig() *tls.Config {
 	}
 	return &tls.Config{Certificates: []tls.Certificate{tlsCert}}
 }
+
+func (svr *Service) CloseUser(user string) error {
+	ctl, ok := svr.ctlManager.GetById(user)
+	if !ok {
+		return fmt.Errorf("user not login")
+	}
+	ctl.allShutdown.Start()
+	return nil
+}
diff --git a/utils/vhost/resource.go b/utils/vhost/resource.go
index 71bfc3a..d0a686f 100755
--- a/utils/vhost/resource.go
+++ b/utils/vhost/resource.go
@@ -93,7 +93,7 @@ func getServiceUnavailablePageContent() []byte {
 
 func notFoundResponse() *http.Response {
 	header := make(http.Header)
-	header.Set("server", "frp/" + version.Full() + "-sakurapanel")
+	header.Set("server", "frp/"+version.Full()+"-sakurapanel")
 	header.Set("Content-Type", "text/html")
 
 	res := &http.Response{