mirror of
https://github.com/pion/stun.git
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47 lines
1.0 KiB
Go
47 lines
1.0 KiB
Go
// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
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// SPDX-License-Identifier: MIT
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// Package main implements a CLI tool which acts as a STUN client
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package main
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import (
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"flag"
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"fmt"
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"log"
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"os"
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"github.com/pion/stun"
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)
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func main() {
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flag.Usage = func() {
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fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
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fmt.Fprintln(os.Stderr, os.Args[0], "stun.l.google.com:19302")
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}
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flag.Parse()
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addr := flag.Arg(0)
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if addr == "" {
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addr = "stun.l.google.com:19302"
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}
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// we only try the first address, so restrict ourselves to IPv4
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c, err := stun.Dial("udp4", addr)
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if err != nil {
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log.Fatal("dial:", err)
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}
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if err = c.Do(stun.MustBuild(stun.TransactionID, stun.BindingRequest), func(res stun.Event) {
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if res.Error != nil {
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log.Fatalln(res.Error)
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}
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var xorAddr stun.XORMappedAddress
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if getErr := xorAddr.GetFrom(res.Message); getErr != nil {
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log.Fatalln(getErr)
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}
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fmt.Println(xorAddr)
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}); err != nil {
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log.Fatal("do:", err)
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}
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if err := c.Close(); err != nil {
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log.Fatalln(err)
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}
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}
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