Feature: socks5 udp associate

adapters/inbound/socket.go

@@ -9,33 +9,24 @@ import (
 
 // SocketAdapter is a adapter for socks and redir connection
 type SocketAdapter struct {
-	conn     net.Conn
+	net.Conn
 	metadata *C.Metadata
 }
 
-// Close socks and redir connection
-func (s *SocketAdapter) Close() {
-	s.conn.Close()
-}
-
 // Metadata return destination metadata
 func (s *SocketAdapter) Metadata() *C.Metadata {
 	return s.metadata
 }
 
-// Conn return raw net.Conn
-func (s *SocketAdapter) Conn() net.Conn {
-	return s.conn
-}
-
 // NewSocket is SocketAdapter generator
-func NewSocket(target socks.Addr, conn net.Conn, source C.SourceType) *SocketAdapter {
+func NewSocket(target socks.Addr, conn net.Conn, source C.SourceType, netType C.NetWork) *SocketAdapter {
 	metadata := parseSocksAddr(target)
+	metadata.NetWork = netType
 	metadata.Source = source
 	metadata.SourceIP = parseSourceIP(conn)
 
 	return &SocketAdapter{
-		conn:     conn,
+		Conn:     conn,
 		metadata: metadata,
 	}
 }