Improve: config convergent and add log-level

constant/adapters.go

@@ -1,7 +1,6 @@
 package constant
 
 import (
-	"io"
 	"net"
 )
 
@@ -15,14 +14,12 @@ const (
 )
 
 type ProxyAdapter interface {
-	ReadWriter() io.ReadWriter
 	Conn() net.Conn
 	Close()
 }
 
 type ServerAdapter interface {
 	Addr() *Addr
-	Connect(ProxyAdapter)
 	Close()
 }