1 files changed, 52 insertions, 0 deletions
diff --git a/vendor/github.com/pion/turn/v2/internal/proto/lifetime.go b/vendor/github.com/pion/turn/v2/internal/proto/lifetime.go
new file mode 100644
index 0000000..b781696
--- /dev/null
+++ b/vendor/github.com/pion/turn/v2/internal/proto/lifetime.go
@@ -0,0 +1,52 @@
+package proto
+
+import (
+	"encoding/binary"
+	"time"
+
+	"github.com/pion/stun"
+)
+
+// DefaultLifetime in RFC 5766 is 10 minutes.
+//
+// RFC 5766 Section 2.2
+const DefaultLifetime = time.Minute * 10
+
+// Lifetime represents LIFETIME attribute.
+//
+// The LIFETIME attribute represents the duration for which the server
+// will maintain an allocation in the absence of a refresh. The value
+// portion of this attribute is 4-bytes long and consists of a 32-bit
+// unsigned integral value representing the number of seconds remaining
+// until expiration.
+//
+// RFC 5766 Section 14.2
+type Lifetime struct {
+	time.Duration
+}
+
+// uint32 seconds
+const lifetimeSize = 4 // 4 bytes, 32 bits
+
+// AddTo adds LIFETIME to message.
+func (l Lifetime) AddTo(m *stun.Message) error {
+	v := make([]byte, lifetimeSize)
+	binary.BigEndian.PutUint32(v, uint32(l.Seconds()))
+	m.Add(stun.AttrLifetime, v)
+	return nil
+}
+
+// GetFrom decodes LIFETIME from message.
+func (l *Lifetime) GetFrom(m *stun.Message) error {
+	v, err := m.Get(stun.AttrLifetime)
+	if err != nil {
+		return err
+	}
+	if err = stun.CheckSize(stun.AttrLifetime, len(v), lifetimeSize); err != nil {
+		return err
+	}
+	_ = v[lifetimeSize-1] // asserting length
+	seconds := binary.BigEndian.Uint32(v)
+	l.Duration = time.Second * time.Duration(seconds)
+	return nil
+}