diff --git a/common/net/address.go b/common/net/address.go
index eba5f009a..fcb2d6c57 100644
--- a/common/net/address.go
+++ b/common/net/address.go
@@ -188,6 +188,9 @@ func (this *domainAddress) Equals(another Address) bool {
 }
 
 func (this *AddressPB) AsAddress() Address {
+	if this == nil {
+		return nil
+	}
 	switch addr := this.Address.(type) {
 	case *AddressPB_Ip:
 		return IPAddress(addr.Ip)
diff --git a/proxy/dokodemo/config.go b/proxy/dokodemo/config.go
index 051e4edce..aa628845a 100644
--- a/proxy/dokodemo/config.go
+++ b/proxy/dokodemo/config.go
@@ -4,10 +4,6 @@ import (
 	v2net "v2ray.com/core/common/net"
 )
 
-type Config struct {
-	FollowRedirect bool
-	Address        v2net.Address
-	Port           v2net.Port
-	Network        *v2net.NetworkList
-	Timeout        uint32
+func (this *Config) GetPredefinedAddress() v2net.Address {
+	return this.Address.AsAddress()
 }
diff --git a/proxy/dokodemo/config.pb.go b/proxy/dokodemo/config.pb.go
new file mode 100644
index 000000000..094c396ff
--- /dev/null
+++ b/proxy/dokodemo/config.pb.go
@@ -0,0 +1,85 @@
+// Code generated by protoc-gen-go.
+// source: v2ray.com/core/proxy/dokodemo/config.proto
+// DO NOT EDIT!
+
+/*
+Package dokodemo is a generated protocol buffer package.
+
+It is generated from these files:
+	v2ray.com/core/proxy/dokodemo/config.proto
+
+It has these top-level messages:
+	Config
+*/
+package dokodemo
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import com_v2ray_core_common_net "v2ray.com/core/common/net"
+import com_v2ray_core_common_net1 "v2ray.com/core/common/net"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type Config struct {
+	Address        *com_v2ray_core_common_net.AddressPB    `protobuf:"bytes,1,opt,name=address" json:"address,omitempty"`
+	Port           uint32                                  `protobuf:"varint,2,opt,name=port" json:"port,omitempty"`
+	NetworkList    *com_v2ray_core_common_net1.NetworkList `protobuf:"bytes,3,opt,name=network_list,json=networkList" json:"network_list,omitempty"`
+	Timeout        uint32                                  `protobuf:"varint,4,opt,name=timeout" json:"timeout,omitempty"`
+	FollowRedirect bool                                    `protobuf:"varint,5,opt,name=follow_redirect,json=followRedirect" json:"follow_redirect,omitempty"`
+}
+
+func (m *Config) Reset()                    { *m = Config{} }
+func (m *Config) String() string            { return proto.CompactTextString(m) }
+func (*Config) ProtoMessage()               {}
+func (*Config) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+func (m *Config) GetAddress() *com_v2ray_core_common_net.AddressPB {
+	if m != nil {
+		return m.Address
+	}
+	return nil
+}
+
+func (m *Config) GetNetworkList() *com_v2ray_core_common_net1.NetworkList {
+	if m != nil {
+		return m.NetworkList
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*Config)(nil), "com.v2ray.core.proxy.dokodemo.Config")
+}
+
+func init() { proto.RegisterFile("v2ray.com/core/proxy/dokodemo/config.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 257 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x7c, 0x90, 0x4d, 0x4b, 0x03, 0x31,
+	0x10, 0x86, 0x59, 0xad, 0x6d, 0x49, 0xfd, 0x80, 0x9c, 0x82, 0x20, 0x14, 0x11, 0xbb, 0x78, 0x48,
+	0xa0, 0xde, 0x05, 0xeb, 0x49, 0x10, 0x91, 0x3d, 0x7a, 0x29, 0x35, 0x3b, 0x95, 0xd0, 0x4d, 0x66,
+	0x99, 0x1d, 0xad, 0xfd, 0xcb, 0xfe, 0x0a, 0x21, 0xd9, 0x20, 0xf4, 0xd0, 0x5b, 0x66, 0x78, 0xf2,
+	0xbc, 0x6f, 0x22, 0xee, 0xbe, 0xe7, 0xb4, 0xda, 0x69, 0x8b, 0xde, 0x58, 0x24, 0x30, 0x2d, 0xe1,
+	0xcf, 0xce, 0xd4, 0xb8, 0xc1, 0x1a, 0x3c, 0x1a, 0x8b, 0x61, 0xed, 0x3e, 0x75, 0x4b, 0xc8, 0x28,
+	0xaf, 0x2c, 0x7a, 0x9d, 0x79, 0x02, 0x1d, 0x59, 0x9d, 0xd9, 0xcb, 0xd9, 0x9e, 0xca, 0xa2, 0xf7,
+	0x18, 0x4c, 0x00, 0x36, 0xab, 0xba, 0x26, 0xe8, 0xba, 0xe4, 0x39, 0x04, 0x06, 0xe0, 0x2d, 0xd2,
+	0x26, 0x81, 0xd7, 0xbf, 0x85, 0x18, 0x3e, 0xc5, 0x06, 0xf2, 0x41, 0x8c, 0x7a, 0x89, 0x2a, 0xa6,
+	0x45, 0x39, 0x99, 0xdf, 0xe8, 0xbd, 0x36, 0xc9, 0xa2, 0x03, 0xb0, 0x7e, 0x4c, 0xe4, 0xdb, 0xa2,
+	0xca, 0x97, 0xa4, 0x14, 0x83, 0x16, 0x89, 0xd5, 0xd1, 0xb4, 0x28, 0xcf, 0xaa, 0x78, 0x96, 0xcf,
+	0xe2, 0xb4, 0xcf, 0x5b, 0x36, 0xae, 0x63, 0x75, 0x1c, 0xc5, 0xb7, 0x07, 0xc4, 0xaf, 0x09, 0x7f,
+	0x71, 0x1d, 0x57, 0x93, 0xf0, 0x3f, 0x48, 0x25, 0x46, 0xec, 0x3c, 0xe0, 0x17, 0xab, 0x41, 0x4c,
+	0xc8, 0xa3, 0x9c, 0x89, 0x8b, 0x35, 0x36, 0x0d, 0x6e, 0x97, 0x04, 0xb5, 0x23, 0xb0, 0xac, 0x4e,
+	0xa6, 0x45, 0x39, 0xae, 0xce, 0xd3, 0xba, 0xea, 0xb7, 0x0b, 0xf1, 0x3e, 0xce, 0x5f, 0xf9, 0x31,
+	0x8c, 0xef, 0xbf, 0xff, 0x0b, 0x00, 0x00, 0xff, 0xff, 0x85, 0x0f, 0xd2, 0x20, 0x9e, 0x01, 0x00,
+	0x00,
+}
diff --git a/proxy/dokodemo/config.proto b/proxy/dokodemo/config.proto
new file mode 100644
index 000000000..54bfdd0fd
--- /dev/null
+++ b/proxy/dokodemo/config.proto
@@ -0,0 +1,15 @@
+syntax = "proto3";
+
+package com.v2ray.core.proxy.dokodemo;
+option go_package = "dokodemo";
+
+import "v2ray.com/core/common/net/address.proto";
+import "v2ray.com/core/common/net/network.proto";
+
+message Config {
+  com.v2ray.core.common.net.AddressPB address = 1;
+  uint32 port = 2;
+  com.v2ray.core.common.net.NetworkList network_list = 3;
+  uint32 timeout = 4;
+  bool follow_redirect = 5;
+}
\ No newline at end of file
diff --git a/proxy/dokodemo/config_json.go b/proxy/dokodemo/config_json.go
index f75a20baf..4c53ea7bb 100644
--- a/proxy/dokodemo/config_json.go
+++ b/proxy/dokodemo/config_json.go
@@ -23,10 +23,10 @@ func (this *Config) UnmarshalJSON(data []byte) error {
 		return errors.New("Dokodemo: Failed to parse config: " + err.Error())
 	}
 	if rawConfig.Host != nil {
-		this.Address = rawConfig.Host.AsAddress()
+		this.Address = rawConfig.Host
 	}
-	this.Port = rawConfig.PortValue
-	this.Network = rawConfig.NetworkList
+	this.Port = uint32(rawConfig.PortValue)
+	this.NetworkList = rawConfig.NetworkList
 	this.Timeout = rawConfig.TimeoutValue
 	this.FollowRedirect = rawConfig.Redirect
 	return nil
diff --git a/proxy/dokodemo/dokodemo.go b/proxy/dokodemo/dokodemo.go
index 7110a0ad0..d7422392f 100644
--- a/proxy/dokodemo/dokodemo.go
+++ b/proxy/dokodemo/dokodemo.go
@@ -32,8 +32,8 @@ type DokodemoDoor struct {
 func NewDokodemoDoor(config *Config, space app.Space, meta *proxy.InboundHandlerMeta) *DokodemoDoor {
 	d := &DokodemoDoor{
 		config:  config,
-		address: config.Address,
-		port:    config.Port,
+		address: config.GetPredefinedAddress(),
+		port:    v2net.Port(config.Port),
 		meta:    meta,
 	}
 	space.InitializeApplication(func() error {
@@ -73,13 +73,13 @@ func (this *DokodemoDoor) Start() error {
 	}
 	this.accepting = true
 
-	if this.config.Network.HasNetwork(v2net.Network_TCP) {
+	if this.config.NetworkList.HasNetwork(v2net.Network_TCP) {
 		err := this.ListenTCP()
 		if err != nil {
 			return err
 		}
 	}
-	if this.config.Network.HasNetwork(v2net.Network_UDP) {
+	if this.config.NetworkList.HasNetwork(v2net.Network_UDP) {
 		err := this.ListenUDP()
 		if err != nil {
 			return err
diff --git a/proxy/dokodemo/dokodemo_test.go b/proxy/dokodemo/dokodemo_test.go
index 6e2002ade..07d463143 100644
--- a/proxy/dokodemo/dokodemo_test.go
+++ b/proxy/dokodemo/dokodemo_test.go
@@ -54,10 +54,14 @@ func TestDokodemoTCP(t *testing.T) {
 
 	port := v2net.Port(dice.Roll(20000) + 10000)
 	dokodemo := NewDokodemoDoor(&Config{
-		Address: v2net.LocalHostIP,
-		Port:    tcpServer.Port,
-		Network: v2net.Network_TCP.AsList(),
-		Timeout: 600,
+		Address: &v2net.AddressPB{
+			Address: &v2net.AddressPB_Ip{
+				Ip: v2net.LocalHostIP.IP(),
+			},
+		},
+		Port:        uint32(tcpServer.Port),
+		NetworkList: v2net.Network_TCP.AsList(),
+		Timeout:     600,
 	}, space, &proxy.InboundHandlerMeta{
 		Address: v2net.LocalHostIP,
 		Port:    port,
@@ -124,10 +128,14 @@ func TestDokodemoUDP(t *testing.T) {
 
 	port := v2net.Port(dice.Roll(20000) + 10000)
 	dokodemo := NewDokodemoDoor(&Config{
-		Address: v2net.LocalHostIP,
-		Port:    udpServer.Port,
-		Network: v2net.Network_UDP.AsList(),
-		Timeout: 600,
+		Address: &v2net.AddressPB{
+			Address: &v2net.AddressPB_Ip{
+				Ip: v2net.LocalHostIP.IP(),
+			},
+		},
+		Port:        uint32(udpServer.Port),
+		NetworkList: v2net.Network_UDP.AsList(),
+		Timeout:     600,
 	}, space, &proxy.InboundHandlerMeta{
 		Address: v2net.LocalHostIP,
 		Port:    port,