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server/vendor/github.com/pion/stun/stun.go

@@ -0,0 +1,54 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+// Package stun implements Session Traversal Utilities for NAT (STUN) RFC 5389.
+//
+// The stun package is intended to use by package that implements extension
+// to STUN (e.g. TURN) or client/server applications.
+//
+// Most methods are designed to be zero allocations. If it is not enough,
+// low-level methods are available. On other hand, there are helpers that
+// reduce code repeat.
+//
+// See examples for Message for basic usage, or https://github.com/pion/turn
+// package for example of stun extension implementation.
+package stun
+
+import (
+	"encoding/binary"
+	"io"
+)
+
+// bin is shorthand to binary.BigEndian.
+var bin = binary.BigEndian //nolint:gochecknoglobals
+
+func readFullOrPanic(r io.Reader, v []byte) int {
+	n, err := io.ReadFull(r, v)
+	if err != nil {
+		panic(err) //nolint
+	}
+	return n
+}
+
+func writeOrPanic(w io.Writer, v []byte) int {
+	n, err := w.Write(v)
+	if err != nil {
+		panic(err) //nolint
+	}
+	return n
+}
+
+// IANA assigned ports for "stun" protocol.
+const (
+	DefaultPort    = 3478
+	DefaultTLSPort = 5349
+)
+
+type transactionIDSetter struct{}
+
+func (transactionIDSetter) AddTo(m *Message) error {
+	return m.NewTransactionID()
+}
+
+// TransactionID is Setter for m.TransactionID.
+var TransactionID Setter = transactionIDSetter{} //nolint:gochecknoglobals