forked from eclipse/paho.mqtt.golang
/
unsuback.go
44 lines (36 loc) · 961 Bytes
/
unsuback.go
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package packets
import (
"fmt"
"io"
)
//UnsubackPacket is an internal representation of the fields of the
//Unsuback MQTT packet
type UnsubackPacket struct {
FixedHeader
MessageID uint16
}
func (ua *UnsubackPacket) String() string {
str := fmt.Sprintf("%s", ua.FixedHeader)
str += " "
str += fmt.Sprintf("MessageID: %d", ua.MessageID)
return str
}
func (ua *UnsubackPacket) Write(w io.Writer) error {
var err error
ua.FixedHeader.RemainingLength = 2
packet := ua.FixedHeader.pack()
packet.Write(encodeUint16(ua.MessageID))
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (ua *UnsubackPacket) Unpack(b io.Reader) error {
ua.MessageID = decodeUint16(b)
return nil
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (ua *UnsubackPacket) Details() Details {
return Details{Qos: 0, MessageID: ua.MessageID}
}