diff --git a/proxy/socks/server.go b/proxy/socks/server.go
index b6c724484..6b65705a4 100644
--- a/proxy/socks/server.go
+++ b/proxy/socks/server.go
@@ -29,7 +29,7 @@ type Server struct {
 	udpMutex         sync.RWMutex
 	accepting        bool
 	packetDispatcher dispatcher.PacketDispatcher
-	config           *Config
+	config           *ServerConfig
 	tcpListener      *internet.TCPHub
 	udpHub           *udp.UDPHub
 	udpAddress       v2net.Destination
@@ -38,7 +38,7 @@ type Server struct {
 }
 
 // NewServer creates a new Server object.
-func NewServer(config *Config, space app.Space, meta *proxy.InboundHandlerMeta) *Server {
+func NewServer(config *ServerConfig, space app.Space, meta *proxy.InboundHandlerMeta) *Server {
 	s := &Server{
 		config: config,
 		meta:   meta,
@@ -95,7 +95,7 @@ func (this *Server) Start() error {
 	this.tcpMutex.Lock()
 	this.tcpListener = listener
 	this.tcpMutex.Unlock()
-	if this.config.UDPEnabled {
+	if this.config.UdpEnabled {
 		this.listenUDP()
 	}
 	return nil
@@ -129,7 +129,7 @@ func (this *Server) handleConnection(connection internet.Connection) {
 
 func (this *Server) handleSocks5(clientAddr v2net.Destination, reader *v2io.BufferedReader, writer *v2io.BufferedWriter, auth protocol.Socks5AuthenticationRequest) error {
 	expectedAuthMethod := protocol.AuthNotRequired
-	if this.config.AuthType == AuthTypePassword {
+	if this.config.AuthType == ServerConfig_PASSWORD {
 		expectedAuthMethod = protocol.AuthUserPass
 	}
 
@@ -152,7 +152,7 @@ func (this *Server) handleSocks5(clientAddr v2net.Destination, reader *v2io.Buff
 		log.Error("Socks: failed to write authentication: ", err)
 		return err
 	}
-	if this.config.AuthType == AuthTypePassword {
+	if this.config.AuthType == ServerConfig_PASSWORD {
 		upRequest, err := protocol.ReadUserPassRequest(reader)
 		if err != nil {
 			log.Warning("Socks: failed to read username and password: ", err)
@@ -182,7 +182,7 @@ func (this *Server) handleSocks5(clientAddr v2net.Destination, reader *v2io.Buff
 		return err
 	}
 
-	if request.Command == protocol.CmdUdpAssociate && this.config.UDPEnabled {
+	if request.Command == protocol.CmdUdpAssociate && this.config.UdpEnabled {
 		return this.handleUDP(reader, writer)
 	}
 
@@ -320,7 +320,7 @@ func (this *ServerFactory) StreamCapability() internet.StreamConnectionType {
 }
 
 func (this *ServerFactory) Create(space app.Space, rawConfig interface{}, meta *proxy.InboundHandlerMeta) (proxy.InboundHandler, error) {
-	return NewServer(rawConfig.(*Config), space, meta), nil
+	return NewServer(rawConfig.(*ServerConfig), space, meta), nil
 }
 
 func init() {
diff --git a/proxy/socks/server_config.go b/proxy/socks/server_config.go
index e9a2b61ed..1d98a4e74 100644
--- a/proxy/socks/server_config.go
+++ b/proxy/socks/server_config.go
@@ -4,20 +4,7 @@ import (
 	v2net "v2ray.com/core/common/net"
 )
 
-const (
-	AuthTypeNoAuth   = byte(0)
-	AuthTypePassword = byte(1)
-)
-
-type Config struct {
-	AuthType   byte
-	Accounts   map[string]string
-	Address    v2net.Address
-	UDPEnabled bool
-	Timeout    uint32
-}
-
-func (this *Config) HasAccount(username, password string) bool {
+func (this *ServerConfig) HasAccount(username, password string) bool {
 	if this.Accounts == nil {
 		return false
 	}
@@ -27,3 +14,10 @@ func (this *Config) HasAccount(username, password string) bool {
 	}
 	return storedPassed == password
 }
+
+func (this *ServerConfig) GetNetAddress() v2net.Address {
+	if this.Address == nil {
+		return v2net.LocalHostIP
+	}
+	return this.Address.AsAddress()
+}
diff --git a/proxy/socks/server_config_json.go b/proxy/socks/server_config_json.go
index 4605cfb28..2cfaa396f 100644
--- a/proxy/socks/server_config_json.go
+++ b/proxy/socks/server_config_json.go
@@ -17,7 +17,7 @@ const (
 	AuthMethodUserPass = "password"
 )
 
-func (this *Config) UnmarshalJSON(data []byte) error {
+func (this *ServerConfig) UnmarshalJSON(data []byte) error {
 	type SocksConfig struct {
 		AuthMethod string           `json:"auth"`
 		Accounts   []*Account       `json:"accounts"`
@@ -31,9 +31,9 @@ func (this *Config) UnmarshalJSON(data []byte) error {
 		return errors.New("Socks: Failed to parse config: " + err.Error())
 	}
 	if rawConfig.AuthMethod == AuthMethodNoAuth {
-		this.AuthType = AuthTypeNoAuth
+		this.AuthType = ServerConfig_NO_AUTH
 	} else if rawConfig.AuthMethod == AuthMethodUserPass {
-		this.AuthType = AuthTypePassword
+		this.AuthType = ServerConfig_PASSWORD
 	} else {
 		log.Error("Socks: Unknown auth method: ", rawConfig.AuthMethod)
 		return common.ErrBadConfiguration
@@ -46,11 +46,9 @@ func (this *Config) UnmarshalJSON(data []byte) error {
 		}
 	}
 
-	this.UDPEnabled = rawConfig.UDP
+	this.UdpEnabled = rawConfig.UDP
 	if rawConfig.Host != nil {
-		this.Address = rawConfig.Host.AsAddress()
-	} else {
-		this.Address = v2net.LocalHostIP
+		this.Address = rawConfig.Host
 	}
 
 	if rawConfig.Timeout >= 0 {
@@ -60,5 +58,5 @@ func (this *Config) UnmarshalJSON(data []byte) error {
 }
 
 func init() {
-	registry.RegisterInboundConfig("socks", func() interface{} { return new(Config) })
+	registry.RegisterInboundConfig("socks", func() interface{} { return new(ServerConfig) })
 }
diff --git a/proxy/socks/server_udp.go b/proxy/socks/server_udp.go
index 09a6d1031..956b3ca3c 100644
--- a/proxy/socks/server_udp.go
+++ b/proxy/socks/server_udp.go
@@ -17,7 +17,7 @@ func (this *Server) listenUDP() error {
 		return err
 	}
 	this.udpMutex.Lock()
-	this.udpAddress = v2net.UDPDestination(this.config.Address, this.meta.Port)
+	this.udpAddress = v2net.UDPDestination(this.config.GetNetAddress(), this.meta.Port)
 	this.udpHub = udpHub
 	this.udpMutex.Unlock()
 	return nil