49 lines
1.0 KiB
Go
49 lines
1.0 KiB
Go
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
//go:build ignore
|
|
// +build ignore
|
|
|
|
package main
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
|
|
"tailscale.com/tailcfg"
|
|
)
|
|
|
|
func main() {
|
|
res, err := http.Get("https://login.tailscale.com/derpmap/default")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
if res.StatusCode != 200 {
|
|
res.Write(os.Stderr)
|
|
os.Exit(1)
|
|
}
|
|
dm := new(tailcfg.DERPMap)
|
|
if err := json.NewDecoder(res.Body).Decode(dm); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
for rid, r := range dm.Regions {
|
|
// Names misleading to check into git, as this is a
|
|
// static snapshot and doesn't reflect the live DERP
|
|
// map.
|
|
r.RegionCode = fmt.Sprintf("r%d", rid)
|
|
r.RegionName = r.RegionCode
|
|
}
|
|
out, err := json.MarshalIndent(dm, "", "\t")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
if err := ioutil.WriteFile("dns-fallback-servers.json", out, 0644); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|