fix: xray内核使用自有连接时报空指针BUG

core/xray/app/dispatcher/default.go

@@ -151,14 +151,9 @@ func (d *DefaultDispatcher) getLink(ctx context.Context, network net.Network) (*
 	uplinkReader, uplinkWriter := pipe.New(opt...)
 	downlinkReader, downlinkWriter := pipe.New(opt...)
 
-	managedWriter := &ManagedWriter{
-		writer:  uplinkWriter,
-		manager: d.Wm,
-	}
-
 	inboundLink := &transport.Link{
 		Reader: downlinkReader,
-		Writer: managedWriter,
+		Writer: uplinkWriter,
 	}
 
 	outboundLink := &transport.Link{
@@ -198,6 +193,13 @@ func (d *DefaultDispatcher) getLink(ctx context.Context, network net.Network) (*
 			common.Interrupt(inboundLink.Reader)
 			return nil, nil, nil, errors.New("Limited ", user.Email, " by conn or ip")
 		}
+		managedWriter := &ManagedWriter{
+			writer:  uplinkWriter,
+			email:   user.Email,
+			manager: d.Wm,
+		}
+		d.Wm.AddWriter(managedWriter)
+		inboundLink.Writer = managedWriter
 		if w != nil {
 			inboundLink.Writer = rate.NewRateLimitWriter(inboundLink.Writer, w)
 			outboundLink.Writer = rate.NewRateLimitWriter(outboundLink.Writer, w)
@@ -222,8 +224,6 @@ func (d *DefaultDispatcher) getLink(ctx context.Context, network net.Network) (*
 			}
 		}
 	}
-	managedWriter.email = user.Email
-	d.Wm.AddWriter(managedWriter)
 
 	return inboundLink, outboundLink, limit, nil
 }