重构认证相关结构，更新认证流程，添加日志功能

server/fwd/socks/auth.go

@@ -23,11 +23,11 @@ const (
 
 type Authenticator interface {
 	Method() AuthMethod
-	Authenticate(ctx context.Context, reader io.Reader, writer io.Writer) (*AuthContext, error)
+	Authenticate(ctx context.Context, reader io.Reader, writer io.Writer) (*Authentication, error)
 }
 
 // authenticate 执行认证流程
-func (s *Server) authenticate(reader io.Reader, writer io.Writer) (*AuthContext, error) {
+func (s *Server) authenticate(reader io.Reader, writer io.Writer) (*Authentication, error) {
 
 	// 版本检查
 	err := checkVersion(reader)
@@ -75,8 +75,13 @@ func (s *Server) authenticate(reader io.Reader, writer io.Writer) (*AuthContext,
 	return nil, errors.New("没有适用的认证方式")
 }
 
-type AuthContext struct {
+type Authentication struct {
 	Method  AuthMethod
 	Timeout uint
-	Payload map[string]any
+	Payload Payload
+	Data    map[string]any
+}
+
+type Payload struct {
+	ID uint
 }