implement sending of stateless resets

interface.go

@@ -208,6 +208,8 @@ type Config struct {
 	// If not set, it will default to 100.
 	// If set to a negative value, it doesn't allow any unidirectional streams.
 	MaxIncomingUniStreams int
+	// The StatelessResetKey is used to generate stateless reset tokens.
+	StatelessResetKey []byte
 	// KeepAlive defines whether this peer will periodically send a packet to keep the connection alive.
 	KeepAlive bool
 }