diff --git a/go.mod b/go.mod
index a6f1ce8..cc9f8ac 100644
--- a/go.mod
+++ b/go.mod
@@ -12,7 +12,7 @@ require (
 	github.com/nadoo/ipset v0.3.0
 	github.com/xtaci/kcp-go/v5 v5.6.1
 	golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97
-	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c
+	golang.org/x/sys v0.0.0-20210806184541-e5e7981a1069
 )
 
 require (
@@ -26,7 +26,7 @@ require (
 	github.com/templexxx/xorsimd v0.4.1 // indirect
 	github.com/tjfoc/gmsm v1.4.1 // indirect
 	github.com/u-root/uio v0.0.0-20210528151154-e40b768296a7 // indirect
-	golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect
+	golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d // indirect
 )
 
 // Replace dependency modules with local developing copy
diff --git a/go.sum b/go.sum
index e1de379..99129b8 100644
--- a/go.sum
+++ b/go.sum
@@ -128,8 +128,9 @@ golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81R
 golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20201010224723-4f7140c49acb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 h1:qWPm9rbaAMKs8Bq/9LRpbMqxWRVUAQwMI9fVrssnTfw=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d h1:20cMwl2fHAzkJMEA+8J4JgqBQcQGzbisXo31MIeenXI=
+golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -152,14 +153,16 @@ golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201009025420-dfb3f7c4e634/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201101102859-da207088b7d1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210525143221-35b2ab0089ea/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c h1:F1jZWGFhYfh0Ci55sIpILtKKK8p3i2/krTr0H1rg74I=
-golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210806184541-e5e7981a1069 h1:siQdpVirKtzPhKl3lZWozZraCFObP8S1v6PRp0bLrtU=
+golang.org/x/sys v0.0.0-20210806184541-e5e7981a1069/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 h1:v+OssWQX+hTHEmOBgwxdZxK4zHq3yOs8F9J7mk0PY8E=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
diff --git a/proxy/vless/vless.go b/proxy/vless/vless.go
index 503b47c..ce88a78 100644
--- a/proxy/vless/vless.go
+++ b/proxy/vless/vless.go
@@ -1,6 +1,7 @@
 package vless
 
 import (
+	"crypto/sha1"
 	"encoding/hex"
 	"errors"
 	"net/url"
@@ -62,8 +63,17 @@ func NewVLess(s string, d proxy.Dialer, p proxy.Proxy) (*VLess, error) {
 }
 
 // StrToUUID converts string to uuid.
-// s fomat: "6ba7b810-9dad-11d1-80b4-00c04fd430c8"
 func StrToUUID(s string) (uuid [16]byte, err error) {
+	if len(s) >= 1 && len(s) <= 30 {
+		h := sha1.New()
+		h.Write(uuid[:])
+		h.Write([]byte(s))
+		u := h.Sum(nil)[:16]
+		u[6] = (u[6] & 0x0f) | (5 << 4)
+		u[8] = (u[8]&(0xff>>2) | (0x02 << 6))
+		copy(uuid[:], u)
+		return
+	}
 	b := []byte(strings.Replace(s, "-", "", -1))
 	if len(b) != 32 {
 		return uuid, errors.New("invalid UUID: " + s)
diff --git a/proxy/vmess/client.go b/proxy/vmess/client.go
index 07a35e0..19ba11a 100644
--- a/proxy/vmess/client.go
+++ b/proxy/vmess/client.go
@@ -8,6 +8,7 @@ import (
 	"crypto/sha256"
 	"encoding/binary"
 	"errors"
+	"fmt"
 	"hash/fnv"
 	"io"
 	"math/rand"
@@ -18,7 +19,6 @@ import (
 
 	"golang.org/x/crypto/chacha20poly1305"
 
-	"github.com/nadoo/glider/log"
 	"github.com/nadoo/glider/pool"
 )
 
@@ -321,8 +321,7 @@ func (c *Conn) Read(b []byte) (n int, err error) {
 
 	err = c.DecodeRespHeader()
 	if err != nil {
-		log.F("[vmess] DecodeRespHeader error: %s", err)
-		return 0, err
+		return 0, fmt.Errorf("[vmess] error in DecodeRespHeader: %w", err)
 	}
 
 	c.dataReader = c.Conn
diff --git a/proxy/vmess/user.go b/proxy/vmess/user.go
index 60379b5..29bc424 100644
--- a/proxy/vmess/user.go
+++ b/proxy/vmess/user.go
@@ -3,6 +3,7 @@ package vmess
 import (
 	"bytes"
 	"crypto/md5"
+	"crypto/sha1"
 	"encoding/binary"
 	"encoding/hex"
 	"errors"
@@ -53,8 +54,17 @@ func (u *User) GenAlterIDUsers(alterID int) []*User {
 }
 
 // StrToUUID converts string to uuid.
-// s fomat: "6ba7b810-9dad-11d1-80b4-00c04fd430c8"
 func StrToUUID(s string) (uuid [16]byte, err error) {
+	if len(s) >= 1 && len(s) <= 30 {
+		h := sha1.New()
+		h.Write(uuid[:])
+		h.Write([]byte(s))
+		u := h.Sum(nil)[:16]
+		u[6] = (u[6] & 0x0f) | (5 << 4)
+		u[8] = (u[8]&(0xff>>2) | (0x02 << 6))
+		copy(uuid[:], u)
+		return
+	}
 	b := []byte(strings.Replace(s, "-", "", -1))
 	if len(b) != 32 {
 		return uuid, errors.New("invalid UUID: " + s)
@@ -63,6 +73,7 @@ func StrToUUID(s string) (uuid [16]byte, err error) {
 	return
 }
 
+
 // GetKey returns the key of AES-128-CFB encrypter.
 // Key：MD5(UUID + []byte('c48619fe-8f02-49e0-b9e9-edf763e17e21'))
 func GetKey(uuid [16]byte) []byte {