hotfix: close tcp conn after handle

pkg/core/bufferedtcp.go

@@ -62,5 +62,13 @@ func (c *bufferedTCP) Run(ctx context.Context) {
 
 func (c *bufferedTCP) Close() error {
 	c.closed = true
-	return c.Conn.Close()
+	for {
+		var buf *DatagramPacket
+		select {
+		case buf = <-c.Chan:
+			config.LPool.Put(buf.Data[:])
+		default:
+			return c.Conn.Close()
+		}
+	}
 }

pkg/core/gvisortunendpoint.go

@@ -41,6 +41,7 @@ func (h *gvisorTCPHandler) readFromEndpointWriteToTCPConn(ctx context.Context, c
 // tun --> dispatcher
 func (h *gvisorTCPHandler) readFromTCPConnWriteToEndpoint(ctx context.Context, conn net.Conn, endpoint *channel.Endpoint) {
 	tcpConn, _ := newGvisorUDPConnOverTCP(ctx, conn)
+	defer tcpConn.Close()
 	defer h.removeFromRouteMapTCP(ctx, conn)
 
 	for ctx.Err() == nil {