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