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package ice
import (
"encoding/binary"
"github.com/pion/stun"
)
// PriorityAttr represents PRIORITY attribute.
type PriorityAttr uint32
const prioritySize = 4 // 32 bit
// AddTo adds PRIORITY attribute to message.
func (p PriorityAttr) AddTo(m *stun.Message) error {
v := make([]byte, prioritySize)
binary.BigEndian.PutUint32(v, uint32(p))
m.Add(stun.AttrPriority, v)
return nil
}
// GetFrom decodes PRIORITY attribute from message.
func (p *PriorityAttr) GetFrom(m *stun.Message) error {
v, err := m.Get(stun.AttrPriority)
if err != nil {
return err
}
if err = stun.CheckSize(stun.AttrPriority, len(v), prioritySize); err != nil {
return err
}
*p = PriorityAttr(binary.BigEndian.Uint32(v))
return nil
}
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