Parameter types

if > 0 then it is followed by one value, else (<0) followed by count of values (see websocket lentgh rules), followed by values

 1  int8
 2  uint8
 3  int16
 4  uint16
 5  int32
 6  uint32
 7  int64
 8  uint64
 9  float32
 10 float64
 11 char