diff --git a/proxy/blackhole/json/json.go b/proxy/blackhole/json/json.go
index bec72436e..4d42e29db 100644
--- a/proxy/blackhole/json/json.go
+++ b/proxy/blackhole/json/json.go
@@ -1,14 +1,15 @@
 package json
 
 import (
-	"github.com/v2ray/v2ray-core/proxy/common/config/json"
+	"github.com/v2ray/v2ray-core/proxy/internal/config"
+	"github.com/v2ray/v2ray-core/proxy/internal/config/json"
 )
 
 type BlackHoleConfig struct {
 }
 
 func init() {
-	json.RegisterOutboundConnectionConfig("blackhole", func() interface{} {
+	config.RegisterOutboundConnectionConfig("blackhole", json.JsonConfigLoader(func() interface{} {
 		return new(BlackHoleConfig)
-	})
+	}))
 }
diff --git a/proxy/common/config/errors.go b/proxy/common/config/errors.go
deleted file mode 100644
index bc07bded6..000000000
--- a/proxy/common/config/errors.go
+++ /dev/null
@@ -1,9 +0,0 @@
-package config
-
-import (
-	"errors"
-)
-
-var (
-	BadConfiguration = errors.New("Bad proxy configuration.")
-)
diff --git a/proxy/common/config/json/config_cache.go b/proxy/common/config/json/config_cache.go
deleted file mode 100644
index 957d74d78..000000000
--- a/proxy/common/config/json/config_cache.go
+++ /dev/null
@@ -1,45 +0,0 @@
-package json
-
-import (
-	"github.com/v2ray/v2ray-core/proxy/common/config"
-)
-
-type ConfigObjectCreator func() interface{}
-
-var (
-	configCache map[string]ConfigObjectCreator
-)
-
-func getConfigKey(protocol string, cType config.Type) string {
-	return protocol + "_" + string(cType)
-}
-
-func registerConfigType(protocol string, cType config.Type, creator ConfigObjectCreator) error {
-	// TODO: check name
-	configCache[getConfigKey(protocol, cType)] = creator
-	return nil
-}
-
-func RegisterInboundConnectionConfig(protocol string, creator ConfigObjectCreator) error {
-	return registerConfigType(protocol, config.TypeInbound, creator)
-}
-
-func RegisterOutboundConnectionConfig(protocol string, creator ConfigObjectCreator) error {
-	return registerConfigType(protocol, config.TypeOutbound, creator)
-}
-
-func CreateConfig(protocol string, cType config.Type) interface{} {
-	creator, found := configCache[getConfigKey(protocol, cType)]
-	if !found {
-		return nil
-	}
-	return creator()
-}
-
-func initializeConfigCache() {
-	configCache = make(map[string]ConfigObjectCreator)
-}
-
-func init() {
-	initializeConfigCache()
-}
diff --git a/proxy/common/config/type.go b/proxy/common/config/type.go
deleted file mode 100644
index f1efa15e0..000000000
--- a/proxy/common/config/type.go
+++ /dev/null
@@ -1,8 +0,0 @@
-package config
-
-type Type string
-
-const (
-	TypeInbound  = Type("inbound")
-	TypeOutbound = Type("outbound")
-)
diff --git a/proxy/dokodemo/dokodemo_test.go b/proxy/dokodemo/dokodemo_test.go
index 5f8b0922b..ad17bde00 100644
--- a/proxy/dokodemo/dokodemo_test.go
+++ b/proxy/dokodemo/dokodemo_test.go
@@ -4,9 +4,8 @@ import (
 	"net"
 	"testing"
 
-	v2netjson "github.com/v2ray/v2ray-core/common/net/json"
 	v2nettesting "github.com/v2ray/v2ray-core/common/net/testing"
-	"github.com/v2ray/v2ray-core/proxy/dokodemo/json"
+	_ "github.com/v2ray/v2ray-core/proxy/dokodemo/json"
 	_ "github.com/v2ray/v2ray-core/proxy/freedom"
 	"github.com/v2ray/v2ray-core/shell/point"
 	"github.com/v2ray/v2ray-core/shell/point/testing/mocks"
@@ -36,17 +35,16 @@ func TestDokodemoTCP(t *testing.T) {
 	assert.Error(err).IsNil()
 
 	pointPort := v2nettesting.PickPort()
-	networkList := v2netjson.NetworkList([]string{"tcp"})
 	config := mocks.Config{
 		PortValue: pointPort,
 		InboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "dokodemo-door",
-			SettingsValue: &json.DokodemoConfig{
-				Host:         v2netjson.NewIPHost(net.ParseIP("127.0.0.1")),
-				PortValue:    port,
-				NetworkList:  &networkList,
-				TimeoutValue: 0,
-			},
+			SettingsValue: []byte(`{
+        "address": "127.0.0.1",
+        "port": ` + port.String() + `,
+        "network": "tcp",
+        "timeout": 0
+      }`),
 		},
 		OutboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "freedom",
@@ -98,17 +96,16 @@ func TestDokodemoUDP(t *testing.T) {
 	assert.Error(err).IsNil()
 
 	pointPort := v2nettesting.PickPort()
-	networkList := v2netjson.NetworkList([]string{"udp"})
 	config := mocks.Config{
 		PortValue: pointPort,
 		InboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "dokodemo-door",
-			SettingsValue: &json.DokodemoConfig{
-				Host:         v2netjson.NewIPHost(net.ParseIP("127.0.0.1")),
-				PortValue:    port,
-				NetworkList:  &networkList,
-				TimeoutValue: 0,
-			},
+			SettingsValue: []byte(`{
+        "address": "127.0.0.1",
+        "port": ` + port.String() + `,
+        "network": "udp",
+        "timeout": 0
+      }`),
 		},
 		OutboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "freedom",
diff --git a/proxy/dokodemo/json/json.go b/proxy/dokodemo/json/json.go
index 7ae29db6a..928a19343 100644
--- a/proxy/dokodemo/json/json.go
+++ b/proxy/dokodemo/json/json.go
@@ -3,7 +3,8 @@ package json
 import (
 	v2net "github.com/v2ray/v2ray-core/common/net"
 	v2netjson "github.com/v2ray/v2ray-core/common/net/json"
-	"github.com/v2ray/v2ray-core/proxy/common/config/json"
+	"github.com/v2ray/v2ray-core/proxy/internal/config"
+	"github.com/v2ray/v2ray-core/proxy/internal/config/json"
 )
 
 type DokodemoConfig struct {
@@ -30,7 +31,7 @@ func (this *DokodemoConfig) Timeout() int {
 }
 
 func init() {
-	json.RegisterInboundConnectionConfig("dokodemo-door", func() interface{} {
+	config.RegisterInboundConnectionConfig("dokodemo-door", json.JsonConfigLoader(func() interface{} {
 		return new(DokodemoConfig)
-	})
+	}))
 }
diff --git a/proxy/common/errors/errors.go b/proxy/errors.go
similarity index 91%
rename from proxy/common/errors/errors.go
rename to proxy/errors.go
index edafcce7d..4eb105696 100644
--- a/proxy/common/errors/errors.go
+++ b/proxy/errors.go
@@ -1,4 +1,4 @@
-package errors
+package proxy
 
 import (
 	"errors"
diff --git a/proxy/freedom/freedom_test.go b/proxy/freedom/freedom_test.go
index 264f5154d..aaee2169d 100644
--- a/proxy/freedom/freedom_test.go
+++ b/proxy/freedom/freedom_test.go
@@ -14,7 +14,7 @@ import (
 	v2nettesting "github.com/v2ray/v2ray-core/common/net/testing"
 	"github.com/v2ray/v2ray-core/proxy/common/connhandler"
 	_ "github.com/v2ray/v2ray-core/proxy/socks"
-	"github.com/v2ray/v2ray-core/proxy/socks/json"
+	_ "github.com/v2ray/v2ray-core/proxy/socks/json"
 	proxytesting "github.com/v2ray/v2ray-core/proxy/testing"
 	proxymocks "github.com/v2ray/v2ray-core/proxy/testing/mocks"
 	"github.com/v2ray/v2ray-core/shell/point"
@@ -103,9 +103,7 @@ func TestSocksTcpConnect(t *testing.T) {
 		PortValue: pointPort,
 		InboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "socks",
-			SettingsValue: &json.SocksConfig{
-				AuthMethod: "auth",
-			},
+			SettingsValue: []byte(`{"auth": "noauth"}`),
 		},
 		OutboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "freedom",
diff --git a/proxy/freedom/json/json.go b/proxy/freedom/json/json.go
index 5fd20a7a5..241fff40d 100644
--- a/proxy/freedom/json/json.go
+++ b/proxy/freedom/json/json.go
@@ -1,14 +1,15 @@
 package json
 
 import (
-	"github.com/v2ray/v2ray-core/proxy/common/config/json"
+	"github.com/v2ray/v2ray-core/proxy/internal/config"
+	"github.com/v2ray/v2ray-core/proxy/internal/config/json"
 )
 
 type FreedomConfiguration struct {
 }
 
 func init() {
-	json.RegisterOutboundConnectionConfig("freedom", func() interface{} {
+	config.RegisterOutboundConnectionConfig("freedom", json.JsonConfigLoader(func() interface{} {
 		return &FreedomConfiguration{}
-	})
+	}))
 }
diff --git a/proxy/http/json/json.go b/proxy/http/json/json.go
index c3bf5531b..69de8fe65 100644
--- a/proxy/http/json/json.go
+++ b/proxy/http/json/json.go
@@ -1,14 +1,15 @@
 package json
 
 import (
-	"github.com/v2ray/v2ray-core/proxy/common/config/json"
+	"github.com/v2ray/v2ray-core/proxy/internal/config"
+	"github.com/v2ray/v2ray-core/proxy/internal/config/json"
 )
 
 type HttpProxyConfig struct {
 }
 
 func init() {
-	json.RegisterInboundConnectionConfig("http", func() interface{} {
+	config.RegisterInboundConnectionConfig("http", json.JsonConfigLoader(func() interface{} {
 		return new(HttpProxyConfig)
-	})
+	}))
 }
diff --git a/proxy/internal/config/config_cache.go b/proxy/internal/config/config_cache.go
new file mode 100644
index 000000000..da003d9c2
--- /dev/null
+++ b/proxy/internal/config/config_cache.go
@@ -0,0 +1,53 @@
+package config
+
+import (
+	"errors"
+)
+
+type ConfigObjectCreator func(data []byte) (interface{}, error)
+
+var (
+	configCache map[string]ConfigObjectCreator
+)
+
+func getConfigKey(protocol string, proxyType string) string {
+	return protocol + "_" + proxyType
+}
+
+func registerConfigType(protocol string, proxyType string, creator ConfigObjectCreator) error {
+	// TODO: check name
+	configCache[getConfigKey(protocol, proxyType)] = creator
+	return nil
+}
+
+func RegisterInboundConnectionConfig(protocol string, creator ConfigObjectCreator) error {
+	return registerConfigType(protocol, "inbound", creator)
+}
+
+func RegisterOutboundConnectionConfig(protocol string, creator ConfigObjectCreator) error {
+	return registerConfigType(protocol, "outbound", creator)
+}
+
+func CreateInboundConnectionConfig(protocol string, data []byte) (interface{}, error) {
+	creator, found := configCache[getConfigKey(protocol, "inbound")]
+	if !found {
+		return nil, errors.New(protocol + " not found.")
+	}
+	return creator(data)
+}
+
+func CreateOutboundConnectionConfig(protocol string, data []byte) (interface{}, error) {
+	creator, found := configCache[getConfigKey(protocol, "outbound")]
+	if !found {
+		return nil, errors.New(protocol + " not found.")
+	}
+	return creator(data)
+}
+
+func initializeConfigCache() {
+	configCache = make(map[string]ConfigObjectCreator)
+}
+
+func init() {
+	initializeConfigCache()
+}
diff --git a/proxy/common/config/json/config_cache_test.go b/proxy/internal/config/config_cache_test.go
similarity index 60%
rename from proxy/common/config/json/config_cache_test.go
rename to proxy/internal/config/config_cache_test.go
index 2d911253e..0d0354a4a 100644
--- a/proxy/common/config/json/config_cache_test.go
+++ b/proxy/internal/config/config_cache_test.go
@@ -1,9 +1,8 @@
-package json
+package config
 
 import (
 	"testing"
 
-	"github.com/v2ray/v2ray-core/proxy/common/config"
 	v2testing "github.com/v2ray/v2ray-core/testing"
 	"github.com/v2ray/v2ray-core/testing/assert"
 )
@@ -13,17 +12,18 @@ func TestRegisterInboundConfig(t *testing.T) {
 	initializeConfigCache()
 
 	protocol := "test_protocol"
-	creator := func() interface{} {
-		return true
+	creator := func([]byte) (interface{}, error) {
+		return true, nil
 	}
 
 	err := RegisterInboundConnectionConfig(protocol, creator)
 	assert.Error(err).IsNil()
 
-	configObj := CreateConfig(protocol, config.TypeInbound)
+	configObj, err := CreateInboundConnectionConfig(protocol, nil)
 	assert.Bool(configObj.(bool)).IsTrue()
+	assert.Error(err).IsNil()
 
-	configObj = CreateConfig(protocol, config.TypeOutbound)
+	configObj, err = CreateOutboundConnectionConfig(protocol, nil)
 	assert.Pointer(configObj).IsNil()
 }
 
@@ -32,16 +32,17 @@ func TestRegisterOutboundConfig(t *testing.T) {
 	initializeConfigCache()
 
 	protocol := "test_protocol"
-	creator := func() interface{} {
-		return true
+	creator := func([]byte) (interface{}, error) {
+		return true, nil
 	}
 
 	err := RegisterOutboundConnectionConfig(protocol, creator)
 	assert.Error(err).IsNil()
 
-	configObj := CreateConfig(protocol, config.TypeOutbound)
+	configObj, err := CreateOutboundConnectionConfig(protocol, nil)
 	assert.Bool(configObj.(bool)).IsTrue()
+	assert.Error(err).IsNil()
 
-	configObj = CreateConfig(protocol, config.TypeInbound)
+	configObj, err = CreateInboundConnectionConfig(protocol, nil)
 	assert.Pointer(configObj).IsNil()
 }
diff --git a/proxy/internal/config/json/json.go b/proxy/internal/config/json/json.go
new file mode 100644
index 000000000..3bccc2957
--- /dev/null
+++ b/proxy/internal/config/json/json.go
@@ -0,0 +1,16 @@
+package json
+
+import (
+	"encoding/json"
+
+	"github.com/v2ray/v2ray-core/common/log"
+)
+
+func JsonConfigLoader(newConfig func() interface{}) func(data []byte) (interface{}, error) {
+	return func(data []byte) (interface{}, error) {
+		obj := newConfig()
+		log.Debug("Unmarshalling JSON: %s", string(data))
+		err := json.Unmarshal(data, obj)
+		return obj, err
+	}
+}
diff --git a/proxy/proxy.go b/proxy/proxy.go
index 3bed2c357..2be50a495 100644
--- a/proxy/proxy.go
+++ b/proxy/proxy.go
@@ -8,14 +8,16 @@ import (
 	"github.com/v2ray/v2ray-core/app"
 	"github.com/v2ray/v2ray-core/proxy/common/connhandler"
 	"github.com/v2ray/v2ray-core/proxy/internal"
+	"github.com/v2ray/v2ray-core/proxy/internal/config"
 )
 
 var (
 	inboundFactories  = make(map[string]internal.InboundConnectionHandlerCreator)
 	outboundFactories = make(map[string]internal.OutboundConnectionHandlerCreator)
 
-	ErrorProxyNotFound = errors.New("Proxy not found.")
-	ErrorNameExists    = errors.New("Proxy with the same name already exists.")
+	ErrorProxyNotFound    = errors.New("Proxy not found.")
+	ErrorNameExists       = errors.New("Proxy with the same name already exists.")
+	ErrorBadConfiguration = errors.New("Bad proxy configuration.")
 )
 
 func RegisterInboundConnectionHandlerFactory(name string, creator internal.InboundConnectionHandlerCreator) error {
@@ -34,18 +36,34 @@ func RegisterOutboundConnectionHandlerFactory(name string, creator internal.Outb
 	return nil
 }
 
-func CreateInboundConnectionHandler(name string, space app.Space, config interface{}) (connhandler.InboundConnectionHandler, error) {
-	if creator, found := inboundFactories[name]; !found {
+func CreateInboundConnectionHandler(name string, space app.Space, rawConfig []byte) (connhandler.InboundConnectionHandler, error) {
+	creator, found := inboundFactories[name]
+	if !found {
 		return nil, ErrorProxyNotFound
-	} else {
-		return creator(space, config)
 	}
+	if len(rawConfig) > 0 {
+		proxyConfig, err := config.CreateInboundConnectionConfig(name, rawConfig)
+		if err != nil {
+			return nil, err
+		}
+		return creator(space, proxyConfig)
+	}
+	return creator(space, nil)
 }
 
-func CreateOutboundConnectionHandler(name string, space app.Space, config interface{}) (connhandler.OutboundConnectionHandler, error) {
-	if creator, found := outboundFactories[name]; !found {
+func CreateOutboundConnectionHandler(name string, space app.Space, rawConfig []byte) (connhandler.OutboundConnectionHandler, error) {
+	creator, found := outboundFactories[name]
+	if !found {
 		return nil, ErrorNameExists
-	} else {
-		return creator(space, config)
 	}
+
+	if len(rawConfig) > 0 {
+		proxyConfig, err := config.CreateOutboundConnectionConfig(name, rawConfig)
+		if err != nil {
+			return nil, err
+		}
+		return creator(space, proxyConfig)
+	}
+
+	return creator(space, nil)
 }
diff --git a/proxy/socks/json/config.go b/proxy/socks/json/config.go
index e4e0bc36f..8fbf048db 100644
--- a/proxy/socks/json/config.go
+++ b/proxy/socks/json/config.go
@@ -5,7 +5,8 @@ import (
 	"errors"
 	"net"
 
-	jsonconfig "github.com/v2ray/v2ray-core/proxy/common/config/json"
+	"github.com/v2ray/v2ray-core/proxy/internal/config"
+	jsonconfig "github.com/v2ray/v2ray-core/proxy/internal/config/json"
 )
 
 const (
@@ -84,9 +85,9 @@ func (this *SocksConfig) UDPEnabled() bool {
 }
 
 func init() {
-	jsonconfig.RegisterInboundConnectionConfig("socks", func() interface{} {
+	config.RegisterInboundConnectionConfig("socks", jsonconfig.JsonConfigLoader(func() interface{} {
 		return &SocksConfig{
 			HostIP: IPAddress(net.IPv4(127, 0, 0, 1)),
 		}
-	})
+	}))
 }
diff --git a/proxy/socks/json/config_test.go b/proxy/socks/json/config_test.go
index 609f0ff7f..030d30f4e 100644
--- a/proxy/socks/json/config_test.go
+++ b/proxy/socks/json/config_test.go
@@ -5,8 +5,7 @@ import (
 	"net"
 	"testing"
 
-	"github.com/v2ray/v2ray-core/proxy/common/config"
-	jsonconfig "github.com/v2ray/v2ray-core/proxy/common/config/json"
+	"github.com/v2ray/v2ray-core/proxy/internal/config"
 	v2testing "github.com/v2ray/v2ray-core/testing"
 	"github.com/v2ray/v2ray-core/testing/assert"
 )
@@ -27,8 +26,9 @@ func TestAccountMapParsing(t *testing.T) {
 func TestDefaultIPAddress(t *testing.T) {
 	v2testing.Current(t)
 
-	socksConfig := jsonconfig.CreateConfig("socks", config.TypeInbound).(*SocksConfig)
-	assert.String(socksConfig.IP()).Equals("127.0.0.1")
+	socksConfig, err := config.CreateInboundConnectionConfig("socks", []byte(`{}`))
+	assert.Error(err).IsNil()
+	assert.String(socksConfig.(*SocksConfig).IP()).Equals("127.0.0.1")
 }
 
 func TestIPAddressParsing(t *testing.T) {
diff --git a/proxy/socks/protocol/socks.go b/proxy/socks/protocol/socks.go
index dd72143bd..bad4980b3 100644
--- a/proxy/socks/protocol/socks.go
+++ b/proxy/socks/protocol/socks.go
@@ -7,7 +7,7 @@ import (
 	"github.com/v2ray/v2ray-core/common/alloc"
 	"github.com/v2ray/v2ray-core/common/log"
 	v2net "github.com/v2ray/v2ray-core/common/net"
-	proxyerrors "github.com/v2ray/v2ray-core/proxy/common/errors"
+	"github.com/v2ray/v2ray-core/proxy"
 	"github.com/v2ray/v2ray-core/transport"
 )
 
@@ -66,7 +66,7 @@ func ReadAuthentication(reader io.Reader) (auth Socks5AuthenticationRequest, aut
 	auth.version = buffer.Value[0]
 	if auth.version != socksVersion {
 		log.Warning("Unknown protocol version %d", auth.version)
-		err = proxyerrors.InvalidProtocolVersion
+		err = proxy.InvalidProtocolVersion
 		return
 	}
 
diff --git a/proxy/socks/socks.go b/proxy/socks/socks.go
index f483f0ca6..48664b18d 100644
--- a/proxy/socks/socks.go
+++ b/proxy/socks/socks.go
@@ -12,7 +12,7 @@ import (
 	"github.com/v2ray/v2ray-core/common/log"
 	v2net "github.com/v2ray/v2ray-core/common/net"
 	"github.com/v2ray/v2ray-core/common/retry"
-	proxyerrors "github.com/v2ray/v2ray-core/proxy/common/errors"
+	"github.com/v2ray/v2ray-core/proxy"
 	"github.com/v2ray/v2ray-core/proxy/socks/protocol"
 )
 
@@ -127,7 +127,7 @@ func (this *SocksServer) handleSocks5(reader *v2net.TimeOutReader, writer io.Wri
 		}
 		if status != byte(0) {
 			log.Warning("Invalid user account: %s", upRequest.AuthDetail())
-			return proxyerrors.InvalidAuthentication
+			return proxy.InvalidAuthentication
 		}
 	}
 
diff --git a/proxy/socks/socks_test.go b/proxy/socks/socks_test.go
index 28fa88da7..2f69a3b6c 100644
--- a/proxy/socks/socks_test.go
+++ b/proxy/socks/socks_test.go
@@ -12,7 +12,7 @@ import (
 	"github.com/v2ray/v2ray-core/app"
 	v2nettesting "github.com/v2ray/v2ray-core/common/net/testing"
 	"github.com/v2ray/v2ray-core/proxy/common/connhandler"
-	"github.com/v2ray/v2ray-core/proxy/socks/json"
+	_ "github.com/v2ray/v2ray-core/proxy/socks/json"
 	proxytesting "github.com/v2ray/v2ray-core/proxy/testing"
 	proxymocks "github.com/v2ray/v2ray-core/proxy/testing/mocks"
 	"github.com/v2ray/v2ray-core/shell/point"
@@ -41,9 +41,10 @@ func TestSocksTcpConnect(t *testing.T) {
 		PortValue: port,
 		InboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "socks",
-			SettingsValue: &json.SocksConfig{
-				AuthMethod: "noauth",
-			},
+			SettingsValue: []byte(`
+      {
+        "auth": "noauth"
+      }`),
 		},
 		OutboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: protocol,
@@ -99,12 +100,13 @@ func TestSocksTcpConnectWithUserPass(t *testing.T) {
 		PortValue: port,
 		InboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "socks",
-			SettingsValue: &json.SocksConfig{
-				AuthMethod: "password",
-				Accounts: json.SocksAccountMap{
-					"userx": "passy",
-				},
-			},
+			SettingsValue: []byte(`
+      {
+        "auth": "password",
+        "accounts": [
+          {"user": "userx", "pass": "passy"}
+        ]
+      }`),
 		},
 		OutboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: protocol,
@@ -160,12 +162,13 @@ func TestSocksTcpConnectWithWrongUserPass(t *testing.T) {
 		PortValue: port,
 		InboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "socks",
-			SettingsValue: &json.SocksConfig{
-				AuthMethod: "password",
-				Accounts: json.SocksAccountMap{
-					"userx": "passy",
-				},
-			},
+			SettingsValue: []byte(`
+      {
+        "auth": "password",
+        "accounts": [
+          {"user": "userx", "pass": "passy"}
+        ]
+      }`),
 		},
 		OutboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: protocol,
@@ -207,12 +210,13 @@ func TestSocksTcpConnectWithWrongAuthMethod(t *testing.T) {
 		PortValue: port,
 		InboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "socks",
-			SettingsValue: &json.SocksConfig{
-				AuthMethod: "password",
-				Accounts: json.SocksAccountMap{
-					"userx": "passy",
-				},
-			},
+			SettingsValue: []byte(`
+      {
+        "auth": "password",
+        "accounts": [
+          {"user": "userx", "pass": "passy"}
+        ]
+      }`),
 		},
 		OutboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: protocol,
@@ -254,10 +258,7 @@ func TestSocksUdpSend(t *testing.T) {
 		PortValue: port,
 		InboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "socks",
-			SettingsValue: &json.SocksConfig{
-				AuthMethod: "noauth",
-				UDP:        true,
-			},
+			SettingsValue: []byte(`{"auth": "noauth", "udp": true}`),
 		},
 		OutboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: protocol,
diff --git a/proxy/vmess/inbound/json/inbound.go b/proxy/vmess/inbound/json/inbound.go
index 2e5decc35..feb633634 100644
--- a/proxy/vmess/inbound/json/inbound.go
+++ b/proxy/vmess/inbound/json/inbound.go
@@ -1,7 +1,8 @@
 package json
 
 import (
-	"github.com/v2ray/v2ray-core/proxy/common/config/json"
+	"github.com/v2ray/v2ray-core/proxy/internal/config"
+	"github.com/v2ray/v2ray-core/proxy/internal/config/json"
 	"github.com/v2ray/v2ray-core/proxy/vmess"
 	vmessjson "github.com/v2ray/v2ray-core/proxy/vmess/json"
 )
@@ -19,7 +20,7 @@ func (c *Inbound) AllowedUsers() []vmess.User {
 }
 
 func init() {
-	json.RegisterInboundConnectionConfig("vmess", func() interface{} {
+	config.RegisterInboundConnectionConfig("vmess", json.JsonConfigLoader(func() interface{} {
 		return new(Inbound)
-	})
+	}))
 }
diff --git a/proxy/vmess/outbound/json/outbound.go b/proxy/vmess/outbound/json/outbound.go
index b31196cdc..de76a8896 100644
--- a/proxy/vmess/outbound/json/outbound.go
+++ b/proxy/vmess/outbound/json/outbound.go
@@ -6,8 +6,9 @@ import (
 	"github.com/v2ray/v2ray-core/common/log"
 	v2net "github.com/v2ray/v2ray-core/common/net"
 	v2netjson "github.com/v2ray/v2ray-core/common/net/json"
-	proxyconfig "github.com/v2ray/v2ray-core/proxy/common/config"
-	jsonconfig "github.com/v2ray/v2ray-core/proxy/common/config/json"
+	"github.com/v2ray/v2ray-core/proxy"
+	proxyconfig "github.com/v2ray/v2ray-core/proxy/internal/config"
+	jsonconfig "github.com/v2ray/v2ray-core/proxy/internal/config/json"
 	"github.com/v2ray/v2ray-core/proxy/vmess"
 	vmessjson "github.com/v2ray/v2ray-core/proxy/vmess/json"
 	"github.com/v2ray/v2ray-core/proxy/vmess/outbound"
@@ -30,12 +31,12 @@ func (t *ConfigTarget) UnmarshalJSON(data []byte) error {
 	}
 	if len(rawConfig.Users) == 0 {
 		log.Error("0 user configured for VMess outbound.")
-		return proxyconfig.BadConfiguration
+		return proxy.ErrorBadConfiguration
 	}
 	t.Users = rawConfig.Users
 	if rawConfig.Address == nil {
 		log.Error("Address is not set in VMess outbound config.")
-		return proxyconfig.BadConfiguration
+		return proxy.ErrorBadConfiguration
 	}
 	t.Destination = v2net.TCPDestination(rawConfig.Address.Address(), rawConfig.Port)
 	return nil
@@ -56,7 +57,7 @@ func (this *Outbound) UnmarshalJSON(data []byte) error {
 	}
 	if len(rawOutbound.TargetList) == 0 {
 		log.Error("0 VMess receiver configured.")
-		return proxyconfig.BadConfiguration
+		return proxy.ErrorBadConfiguration
 	}
 	this.TargetList = rawOutbound.TargetList
 	return nil
@@ -78,7 +79,7 @@ func (o *Outbound) Receivers() []*outbound.Receiver {
 }
 
 func init() {
-	jsonconfig.RegisterOutboundConnectionConfig("vmess", func() interface{} {
+	proxyconfig.RegisterOutboundConnectionConfig("vmess", jsonconfig.JsonConfigLoader(func() interface{} {
 		return new(Outbound)
-	})
+	}))
 }
diff --git a/proxy/vmess/protocol/vmess.go b/proxy/vmess/protocol/vmess.go
index 2ea6da1fc..91fcad410 100644
--- a/proxy/vmess/protocol/vmess.go
+++ b/proxy/vmess/protocol/vmess.go
@@ -11,7 +11,7 @@ import (
 	v2crypto "github.com/v2ray/v2ray-core/common/crypto"
 	"github.com/v2ray/v2ray-core/common/log"
 	v2net "github.com/v2ray/v2ray-core/common/net"
-	proxyerrors "github.com/v2ray/v2ray-core/proxy/common/errors"
+	"github.com/v2ray/v2ray-core/proxy"
 	"github.com/v2ray/v2ray-core/proxy/vmess"
 	"github.com/v2ray/v2ray-core/proxy/vmess/protocol/user"
 	"github.com/v2ray/v2ray-core/transport"
@@ -76,7 +76,7 @@ func (this *VMessRequestReader) Read(reader io.Reader) (*VMessRequest, error) {
 
 	userObj, timeSec, valid := this.vUserSet.GetUser(buffer.Value[:nBytes])
 	if !valid {
-		return nil, proxyerrors.InvalidAuthentication
+		return nil, proxy.InvalidAuthentication
 	}
 
 	aesStream, err := v2crypto.NewAesDecryptionStream(userObj.ID().CmdKey(), user.Int64Hash(timeSec))
@@ -99,7 +99,7 @@ func (this *VMessRequestReader) Read(reader io.Reader) (*VMessRequest, error) {
 
 	if request.Version != Version {
 		log.Warning("Invalid protocol version %d", request.Version)
-		return nil, proxyerrors.InvalidProtocolVersion
+		return nil, proxy.InvalidProtocolVersion
 	}
 
 	request.RequestIV = buffer.Value[1:17]       // 16 bytes
diff --git a/proxy/vmess/vmess_test.go b/proxy/vmess/vmess_test.go
index 39d6d7b62..caeef1aad 100644
--- a/proxy/vmess/vmess_test.go
+++ b/proxy/vmess/vmess_test.go
@@ -13,10 +13,9 @@ import (
 	proxymocks "github.com/v2ray/v2ray-core/proxy/testing/mocks"
 	vmess "github.com/v2ray/v2ray-core/proxy/vmess"
 	_ "github.com/v2ray/v2ray-core/proxy/vmess/inbound"
-	inboundjson "github.com/v2ray/v2ray-core/proxy/vmess/inbound/json"
-	vmessjson "github.com/v2ray/v2ray-core/proxy/vmess/json"
+	_ "github.com/v2ray/v2ray-core/proxy/vmess/inbound/json"
 	_ "github.com/v2ray/v2ray-core/proxy/vmess/outbound"
-	outboundjson "github.com/v2ray/v2ray-core/proxy/vmess/outbound/json"
+	_ "github.com/v2ray/v2ray-core/proxy/vmess/outbound/json"
 	"github.com/v2ray/v2ray-core/shell/point"
 	"github.com/v2ray/v2ray-core/shell/point/testing/mocks"
 	v2testing "github.com/v2ray/v2ray-core/testing"
@@ -55,16 +54,17 @@ func TestVMessInAndOut(t *testing.T) {
 		},
 		OutboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "vmess",
-			SettingsValue: &outboundjson.Outbound{
-				[]*outboundjson.ConfigTarget{
-					&outboundjson.ConfigTarget{
-						Destination: v2net.TCPDestination(v2net.IPAddress([]byte{127, 0, 0, 1}), portB),
-						Users: []*vmessjson.ConfigUser{
-							&vmessjson.ConfigUser{Id: testAccount},
-						},
-					},
-				},
-			},
+			SettingsValue: []byte(`{
+        "vnext": [
+          {
+            "address": "127.0.0.1",
+            "port": ` + portB.String() + `,
+            "users": [
+              {"id": "` + testAccount.String() + `"}
+            ]
+          }
+        ]
+      }`),
 		},
 	}
 
@@ -90,11 +90,11 @@ func TestVMessInAndOut(t *testing.T) {
 		PortValue: portB,
 		InboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: "vmess",
-			SettingsValue: &inboundjson.Inbound{
-				AllowedClients: []*vmessjson.ConfigUser{
-					&vmessjson.ConfigUser{Id: testAccount},
-				},
-			},
+			SettingsValue: []byte(`{
+        "clients": [
+          {"id": "` + testAccount.String() + `"}
+        ]
+      }`),
 		},
 		OutboundConfigValue: &mocks.ConnectionConfig{
 			ProtocolValue: protocol,
diff --git a/shell/point/config.go b/shell/point/config.go
index 81b5cb333..e291e0234 100644
--- a/shell/point/config.go
+++ b/shell/point/config.go
@@ -9,7 +9,7 @@ import (
 
 type ConnectionConfig interface {
 	Protocol() string
-	Settings() interface{}
+	Settings() []byte
 }
 
 type LogConfig interface {
@@ -40,13 +40,13 @@ type InboundDetourConfig interface {
 	PortRange() v2net.PortRange
 	Tag() string
 	Allocation() InboundDetourAllocationConfig
-	Settings() interface{}
+	Settings() []byte
 }
 
 type OutboundDetourConfig interface {
 	Protocol() string
 	Tag() string
-	Settings() interface{}
+	Settings() []byte
 }
 
 type PointConfig interface {
diff --git a/shell/point/json/connection.go b/shell/point/json/connection.go
index c19ca2b28..2155ad305 100644
--- a/shell/point/json/connection.go
+++ b/shell/point/json/connection.go
@@ -2,35 +2,17 @@ package json
 
 import (
 	"encoding/json"
-
-	"github.com/v2ray/v2ray-core/common/log"
-	proxyconfig "github.com/v2ray/v2ray-core/proxy/common/config"
-	proxyjson "github.com/v2ray/v2ray-core/proxy/common/config/json"
 )
 
 type ConnectionConfig struct {
-	ProtocolString  string           `json:"protocol"`
-	SettingsMessage json.RawMessage  `json:"settings"`
-	Type            proxyconfig.Type `json:"-"`
+	ProtocolString  string          `json:"protocol"`
+	SettingsMessage json.RawMessage `json:"settings"`
 }
 
 func (c *ConnectionConfig) Protocol() string {
 	return c.ProtocolString
 }
 
-func (c *ConnectionConfig) Settings() interface{} {
-	return loadConnectionConfig(c.SettingsMessage, c.Protocol(), c.Type)
-}
-
-func loadConnectionConfig(message json.RawMessage, protocol string, cType proxyconfig.Type) interface{} {
-	configObj := proxyjson.CreateConfig(protocol, cType)
-	if configObj == nil {
-		panic("Unknown protocol " + protocol)
-	}
-	err := json.Unmarshal(message, configObj)
-	if err != nil {
-		log.Error("Unable to parse connection config: %v", err)
-		panic("Failed to parse connection config.")
-	}
-	return configObj
+func (c *ConnectionConfig) Settings() []byte {
+	return []byte(c.SettingsMessage)
 }
diff --git a/shell/point/json/inbound_detour.go b/shell/point/json/inbound_detour.go
index a7604e1b0..79998c857 100644
--- a/shell/point/json/inbound_detour.go
+++ b/shell/point/json/inbound_detour.go
@@ -5,7 +5,6 @@ import (
 
 	v2net "github.com/v2ray/v2ray-core/common/net"
 	v2netjson "github.com/v2ray/v2ray-core/common/net/json"
-	proxyconfig "github.com/v2ray/v2ray-core/proxy/common/config"
 	"github.com/v2ray/v2ray-core/shell/point"
 )
 
@@ -47,8 +46,8 @@ func (this *InboundDetourConfig) PortRange() v2net.PortRange {
 	return this.PortRangeValue
 }
 
-func (this *InboundDetourConfig) Settings() interface{} {
-	return loadConnectionConfig(this.SettingsValue, this.ProtocolValue, proxyconfig.TypeInbound)
+func (this *InboundDetourConfig) Settings() []byte {
+	return []byte(this.SettingsValue)
 }
 
 func (this *InboundDetourConfig) Tag() string {
diff --git a/shell/point/json/json.go b/shell/point/json/json.go
index 49b124a23..516155480 100644
--- a/shell/point/json/json.go
+++ b/shell/point/json/json.go
@@ -9,7 +9,6 @@ import (
 	routerjson "github.com/v2ray/v2ray-core/app/router/json"
 	"github.com/v2ray/v2ray-core/common/log"
 	v2net "github.com/v2ray/v2ray-core/common/net"
-	proxyconfig "github.com/v2ray/v2ray-core/proxy/common/config"
 	"github.com/v2ray/v2ray-core/shell/point"
 )
 
@@ -87,8 +86,5 @@ func LoadConfig(file string) (*Config, error) {
 		return nil, err
 	}
 
-	jsonConfig.InboundConfigValue.Type = proxyconfig.TypeInbound
-	jsonConfig.OutboundConfigValue.Type = proxyconfig.TypeOutbound
-
 	return jsonConfig, err
 }
diff --git a/shell/point/json/outbound_detour.go b/shell/point/json/outbound_detour.go
index a5cbe0080..929cd1bec 100644
--- a/shell/point/json/outbound_detour.go
+++ b/shell/point/json/outbound_detour.go
@@ -2,8 +2,6 @@ package json
 
 import (
 	"encoding/json"
-
-	proxyconfig "github.com/v2ray/v2ray-core/proxy/common/config"
 )
 
 type OutboundDetourConfig struct {
@@ -20,6 +18,6 @@ func (this *OutboundDetourConfig) Tag() string {
 	return this.TagValue
 }
 
-func (this *OutboundDetourConfig) Settings() interface{} {
-	return loadConnectionConfig(this.SettingsValue, this.ProtocolValue, proxyconfig.TypeOutbound)
+func (this *OutboundDetourConfig) Settings() []byte {
+	return []byte(this.SettingsValue)
 }
diff --git a/shell/point/testing/mocks/config.go b/shell/point/testing/mocks/config.go
index b094e9a4f..b2b8d6392 100644
--- a/shell/point/testing/mocks/config.go
+++ b/shell/point/testing/mocks/config.go
@@ -10,14 +10,14 @@ import (
 
 type ConnectionConfig struct {
 	ProtocolValue string
-	SettingsValue interface{}
+	SettingsValue []byte
 }
 
 func (config *ConnectionConfig) Protocol() string {
 	return config.ProtocolValue
 }
 
-func (config *ConnectionConfig) Settings() interface{} {
+func (config *ConnectionConfig) Settings() []byte {
 	return config.SettingsValue
 }