Improve multiplex

option/outbound.go

@@ -150,4 +150,5 @@ type MultiplexOptions struct {
 	MaxConnections int    `json:"max_connections,omitempty"`
 	MinStreams     int    `json:"min_streams,omitempty"`
 	MaxStreams     int    `json:"max_streams,omitempty"`
+	Padding        bool   `json:"padding,omitempty"`
 }