diff --git a/transport/config.go b/transport/config.go
index 967b0b1b7..f96021af8 100644
--- a/transport/config.go
+++ b/transport/config.go
@@ -1,9 +1,11 @@
 package transport
 
+// Config for V2Ray transport layer.
 type Config struct {
 	ConnectionReuse bool
 }
 
+// Apply applies this Config.
 func (this *Config) Apply() error {
 	if this.ConnectionReuse {
 		connectionReuse = true
diff --git a/transport/config_json.go b/transport/config_json.go
index fb724bfc3..95fd56e02 100644
--- a/transport/config_json.go
+++ b/transport/config_json.go
@@ -8,7 +8,9 @@ func (this *Config) UnmarshalJSON(data []byte) error {
 	type JsonConfig struct {
 		ConnectionReuse bool `json:"connectionReuse"`
 	}
-	jsonConfig := new(JsonConfig)
+	jsonConfig := &JsonConfig{
+		ConnectionReuse: true,
+	}
 	if err := json.Unmarshal(data, jsonConfig); err != nil {
 		return err
 	}
diff --git a/transport/transport.go b/transport/transport.go
index c6bd97bf2..9d5cfc8f2 100644
--- a/transport/transport.go
+++ b/transport/transport.go
@@ -1,9 +1,10 @@
 package transport
 
 var (
-	connectionReuse = false
+	connectionReuse = true
 )
 
+// IsConnectionReusable returns true if V2Ray is trying to reuse TCP connections.
 func IsConnectionReusable() bool {
 	return connectionReuse
 }