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953fa80c6f
Add a standalone server for STUN that can be hosted independently of the derper, and factor that back into the derper. Fixes #8434 Closes #8435 Closes #10745 Signed-off-by: James Tucker <james@tailscale.com>
49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// The stund binary is a standalone STUN server.
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package main
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import (
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"context"
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"flag"
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"io"
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"log"
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"net/http"
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"os/signal"
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"syscall"
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"tailscale.com/net/stunserver"
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"tailscale.com/tsweb"
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)
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var (
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stunAddr = flag.String("stun", ":3478", "UDP address on which to start the STUN server")
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httpAddr = flag.String("http", ":3479", "address on which to start the debug http server")
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)
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func main() {
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flag.Parse()
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ctx, cancel := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
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defer cancel()
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log.Printf("HTTP server listening on %s", *httpAddr)
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go http.ListenAndServe(*httpAddr, mux())
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s := stunserver.New(ctx)
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if err := s.ListenAndServe(*stunAddr); err != nil {
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log.Fatal(err)
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}
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}
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func mux() *http.ServeMux {
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mux := http.NewServeMux()
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mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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io.WriteString(w, "<h1>stund</h1><a href=/debug>/debug</a>")
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})
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debug := tsweb.Debugger(mux)
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debug.KV("stun_addr", *stunAddr)
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return mux
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}
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