diff --git a/proxy/vlite/outbound/config.pb.go b/proxy/vlite/outbound/config.pb.go
index 88d7cdd8c..84b3b3d6e 100644
--- a/proxy/vlite/outbound/config.pb.go
+++ b/proxy/vlite/outbound/config.pb.go
@@ -27,13 +27,14 @@ type UDPProtocolConfig struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Address             *net.IPOrDomain `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
-	Port                uint32          `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"`
-	Password            string          `protobuf:"bytes,3,opt,name=password,proto3" json:"password,omitempty"`
-	ScramblePacket      bool            `protobuf:"varint,4,opt,name=scramble_packet,json=scramblePacket,proto3" json:"scramble_packet,omitempty"`
-	EnableFec           bool            `protobuf:"varint,5,opt,name=enable_fec,json=enableFec,proto3" json:"enable_fec,omitempty"`
-	EnableStabilization bool            `protobuf:"varint,6,opt,name=enable_stabilization,json=enableStabilization,proto3" json:"enable_stabilization,omitempty"`
-	EnableRenegotiation bool            `protobuf:"varint,7,opt,name=enable_renegotiation,json=enableRenegotiation,proto3" json:"enable_renegotiation,omitempty"`
+	Address                     *net.IPOrDomain `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
+	Port                        uint32          `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"`
+	Password                    string          `protobuf:"bytes,3,opt,name=password,proto3" json:"password,omitempty"`
+	ScramblePacket              bool            `protobuf:"varint,4,opt,name=scramble_packet,json=scramblePacket,proto3" json:"scramble_packet,omitempty"`
+	EnableFec                   bool            `protobuf:"varint,5,opt,name=enable_fec,json=enableFec,proto3" json:"enable_fec,omitempty"`
+	EnableStabilization         bool            `protobuf:"varint,6,opt,name=enable_stabilization,json=enableStabilization,proto3" json:"enable_stabilization,omitempty"`
+	EnableRenegotiation         bool            `protobuf:"varint,7,opt,name=enable_renegotiation,json=enableRenegotiation,proto3" json:"enable_renegotiation,omitempty"`
+	HandshakeMaskingPaddingSize uint32          `protobuf:"varint,8,opt,name=handshake_masking_padding_size,json=handshakeMaskingPaddingSize,proto3" json:"handshake_masking_padding_size,omitempty"`
 }
 
 func (x *UDPProtocolConfig) Reset() {
@@ -117,6 +118,13 @@ func (x *UDPProtocolConfig) GetEnableRenegotiation() bool {
 	return false
 }
 
+func (x *UDPProtocolConfig) GetHandshakeMaskingPaddingSize() uint32 {
+	if x != nil {
+		return x.HandshakeMaskingPaddingSize
+	}
+	return 0
+}
+
 var File_proxy_vlite_outbound_config_proto protoreflect.FileDescriptor
 
 var file_proxy_vlite_outbound_config_proto_rawDesc = []byte{
@@ -128,7 +136,7 @@ var file_proxy_vlite_outbound_config_proto_rawDesc = []byte{
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@@ -147,17 +155,21 @@ var file_proxy_vlite_outbound_config_proto_rawDesc = []byte{
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 var (