1 files changed, 65 insertions, 0 deletions
diff --git a/vendor/github.com/pion/turn/v2/internal/proto/reqtrans.go b/vendor/github.com/pion/turn/v2/internal/proto/reqtrans.go
new file mode 100644
index 0000000..a4e4863
--- /dev/null
+++ b/vendor/github.com/pion/turn/v2/internal/proto/reqtrans.go
@@ -0,0 +1,65 @@
+package proto
+
+import (
+	"strconv"
+
+	"github.com/pion/stun"
+)
+
+// Protocol is IANA assigned protocol number.
+type Protocol byte
+
+const (
+	// ProtoUDP is IANA assigned protocol number for UDP.
+	ProtoUDP Protocol = 17
+)
+
+func (p Protocol) String() string {
+	switch p {
+	case ProtoUDP:
+		return "UDP"
+	default:
+		return strconv.Itoa(int(p))
+	}
+}
+
+// RequestedTransport represents REQUESTED-TRANSPORT attribute.
+//
+// This attribute is used by the client to request a specific transport
+// protocol for the allocated transport address. RFC 5766 only allows the use of
+// codepoint 17 (User Datagram Protocol).
+//
+// RFC 5766 Section 14.7
+type RequestedTransport struct {
+	Protocol Protocol
+}
+
+func (t RequestedTransport) String() string {
+	return "protocol: " + t.Protocol.String()
+}
+
+const requestedTransportSize = 4
+
+// AddTo adds REQUESTED-TRANSPORT to message.
+func (t RequestedTransport) AddTo(m *stun.Message) error {
+	v := make([]byte, requestedTransportSize)
+	v[0] = byte(t.Protocol)
+	// b[1:4] is RFFU = 0.
+	// The RFFU field MUST be set to zero on transmission and MUST be
+	// ignored on reception. It is reserved for future uses.
+	m.Add(stun.AttrRequestedTransport, v)
+	return nil
+}
+
+// GetFrom decodes REQUESTED-TRANSPORT from message.
+func (t *RequestedTransport) GetFrom(m *stun.Message) error {
+	v, err := m.Get(stun.AttrRequestedTransport)
+	if err != nil {
+		return err
+	}
+	if err = stun.CheckSize(stun.AttrRequestedTransport, len(v), requestedTransportSize); err != nil {
+		return err
+	}
+	t.Protocol = Protocol(v[0])
+	return nil
+}