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server/vendor/github.com/pion/ice/v2/priority.go

@@ -0,0 +1,36 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+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
+}