robocar-led/vendor/github.com/eclipse/paho.mqtt.golang/packets/pubrel.go

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2019-12-14 10:56:22 +00:00
package packets
import (
"fmt"
"io"
)
//PubrelPacket is an internal representation of the fields of the
//Pubrel MQTT packet
type PubrelPacket struct {
FixedHeader
MessageID uint16
}
func (pr *PubrelPacket) String() string {
str := fmt.Sprintf("%s", pr.FixedHeader)
str += " "
str += fmt.Sprintf("MessageID: %d", pr.MessageID)
return str
}
func (pr *PubrelPacket) Write(w io.Writer) error {
var err error
pr.FixedHeader.RemainingLength = 2
packet := pr.FixedHeader.pack()
packet.Write(encodeUint16(pr.MessageID))
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (pr *PubrelPacket) Unpack(b io.Reader) error {
var err error
pr.MessageID, err = decodeUint16(b)
return err
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (pr *PubrelPacket) Details() Details {
return Details{Qos: pr.Qos, MessageID: pr.MessageID}
}