diff --git a/common/socket/ServerEvent.go b/common/socket/ServerEvent.go
index 0e916c71..833fad8c 100644
--- a/common/socket/ServerEvent.go
+++ b/common/socket/ServerEvent.go
@@ -126,7 +126,12 @@ func (s *Server) OnTraffic(c gnet.Conn) (action gnet.Action) {
 			s.parser(c, msg.Payload)
 		})
 	}
-
+	if c.InboundBuffered() > 0 {
+		if err := c.Wake(nil); err != nil { // wake up the connection manually to avoid missing the leftover data
+			logging.Errorf("failed to wake up the connection, %v", err)
+			return gnet.Close
+		}
+	}
 	return gnet.None
 }