diff --git a/adapter/outbound/vless.go b/adapter/outbound/vless.go
index 83ce4e57..2456c2c3 100644
--- a/adapter/outbound/vless.go
+++ b/adapter/outbound/vless.go
@@ -57,6 +57,7 @@ type VlessOption struct {
 	UUID              string            `proxy:"uuid"`
 	Flow              string            `proxy:"flow,omitempty"`
 	TLS               bool              `proxy:"tls,omitempty"`
+	ALPN              []string          `proxy:"alpn,omitempty"`
 	UDP               bool              `proxy:"udp,omitempty"`
 	PacketAddr        bool              `proxy:"packet-addr,omitempty"`
 	XUDP              bool              `proxy:"xudp,omitempty"`
@@ -211,6 +212,7 @@ func (v *Vless) streamTLSConn(ctx context.Context, conn net.Conn, isH2 bool) (ne
 			FingerPrint:       v.option.Fingerprint,
 			ClientFingerprint: v.option.ClientFingerprint,
 			Reality:           v.realityConfig,
+			NextProtos:        v.option.ALPN,
 		}
 
 		if isH2 {
diff --git a/adapter/outbound/vmess.go b/adapter/outbound/vmess.go
index 8a94c082..7495d8a3 100644
--- a/adapter/outbound/vmess.go
+++ b/adapter/outbound/vmess.go
@@ -52,6 +52,7 @@ type VmessOption struct {
 	UDP                 bool           `proxy:"udp,omitempty"`
 	Network             string         `proxy:"network,omitempty"`
 	TLS                 bool           `proxy:"tls,omitempty"`
+	ALPN                []string       `proxy:"alpn,omitempty"`
 	SkipCertVerify      bool           `proxy:"skip-cert-verify,omitempty"`
 	Fingerprint         string         `proxy:"fingerprint,omitempty"`
 	ServerName          string         `proxy:"servername,omitempty"`
@@ -149,6 +150,7 @@ func (v *Vmess) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.M
 				SkipCertVerify:    v.option.SkipCertVerify,
 				ClientFingerprint: v.option.ClientFingerprint,
 				Reality:           v.realityConfig,
+				NextProtos:        v.option.ALPN,
 			}
 
 			if v.option.ServerName != "" {
@@ -205,6 +207,7 @@ func (v *Vmess) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.M
 				SkipCertVerify:    v.option.SkipCertVerify,
 				ClientFingerprint: v.option.ClientFingerprint,
 				Reality:           v.realityConfig,
+				NextProtos:        v.option.ALPN,
 			}
 
 			if v.option.ServerName != "" {
diff --git a/common/buf/sing.go b/common/buf/sing.go
index 4585bf74..d204ba11 100644
--- a/common/buf/sing.go
+++ b/common/buf/sing.go
@@ -14,13 +14,6 @@ var NewSize = buf.NewSize
 var With = buf.With
 var As = buf.As
 
-var KeepAlive = common.KeepAlive
-
-//go:norace
-func Dup[T any](obj T) T {
-	return common.Dup(obj)
-}
-
 var (
 	Must  = common.Must
 	Error = common.Error
diff --git a/common/convert/converter.go b/common/convert/converter.go
index 1f1b086d..ddc5c944 100644
--- a/common/convert/converter.go
+++ b/common/convert/converter.go
@@ -50,7 +50,9 @@ func ConvertsV2Ray(buf []byte) ([]map[string]any, error) {
 			hysteria["port"] = urlHysteria.Port()
 			hysteria["sni"] = query.Get("peer")
 			hysteria["obfs"] = query.Get("obfs")
-			hysteria["alpn"] = []string{query.Get("alpn")}
+			if alpn := query.Get("alpn"); alpn != "" {
+				hysteria["alpn"] = strings.Split(alpn, ",")
+			}
 			hysteria["auth_str"] = query.Get("auth")
 			hysteria["protocol"] = query.Get("protocol")
 			up := query.Get("up")
@@ -127,10 +129,12 @@ func ConvertsV2Ray(buf []byte) ([]map[string]any, error) {
 			trojan["udp"] = true
 			trojan["skip-cert-verify"], _ = strconv.ParseBool(query.Get("allowInsecure"))
 
-			sni := query.Get("sni")
-			if sni != "" {
+			if sni := query.Get("sni"); sni != "" {
 				trojan["sni"] = sni
 			}
+			if alpn := query.Get("alpn"); alpn != "" {
+				trojan["alpn"] = strings.Split(alpn, ",")
+			}
 
 			network := strings.ToLower(query.Get("type"))
 			if network != "" {
@@ -258,6 +262,9 @@ func ConvertsV2Ray(buf []byte) ([]map[string]any, error) {
 				if strings.HasSuffix(tls, "tls") {
 					vmess["tls"] = true
 				}
+				if alpn, ok := values["alpn"].(string); ok {
+					vmess["alpn"] = strings.Split(alpn, ",")
+				}
 			}
 
 			switch network {
@@ -373,6 +380,7 @@ func ConvertsV2Ray(buf []byte) ([]map[string]any, error) {
 				}
 			}
 			proxies = append(proxies, ss)
+
 		case "ssr":
 			dcBuf, err := encRaw.DecodeString(body)
 			if err != nil {
diff --git a/common/convert/v.go b/common/convert/v.go
index 23949aab..2d8cf732 100644
--- a/common/convert/v.go
+++ b/common/convert/v.go
@@ -24,8 +24,6 @@ func handleVShareLink(names map[string]int, url *url.URL, scheme string, proxy m
 	proxy["port"] = url.Port()
 	proxy["uuid"] = url.User.Username()
 	proxy["udp"] = true
-	proxy["skip-cert-verify"] = false
-	proxy["tls"] = false
 	tls := strings.ToLower(query.Get("security"))
 	if strings.HasSuffix(tls, "tls") || tls == "reality" {
 		proxy["tls"] = true
@@ -34,6 +32,9 @@ func handleVShareLink(names map[string]int, url *url.URL, scheme string, proxy m
 		} else {
 			proxy["client-fingerprint"] = fingerprint
 		}
+		if alpn := query.Get("alpn"); alpn != "" {
+			proxy["alpn"] = strings.Split(alpn, ",")
+		}
 	}
 	if sni := query.Get("sni"); sni != "" {
 		proxy["servername"] = sni
diff --git a/transport/gun/utils.go b/transport/gun/utils.go
index e5f6e019..e4a66315 100644
--- a/transport/gun/utils.go
+++ b/transport/gun/utils.go
@@ -1,10 +1,26 @@
 package gun
 
 func UVarintLen(x uint64) int {
-	i := 0
-	for x >= 0x80 {
-		x >>= 7
-		i++
+	switch {
+	case x < 1<<(7*1):
+		return 1
+	case x < 1<<(7*2):
+		return 2
+	case x < 1<<(7*3):
+		return 3
+	case x < 1<<(7*4):
+		return 4
+	case x < 1<<(7*5):
+		return 5
+	case x < 1<<(7*6):
+		return 6
+	case x < 1<<(7*7):
+		return 7
+	case x < 1<<(7*8):
+		return 8
+	case x < 1<<(7*9):
+		return 9
+	default:
+		return 10
 	}
-	return i + 1
 }