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https://github.com/tailscale/tailscale.git
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10d7c2583c
Move derpmap.Prod to a static JSON file (go:generate'd) instead, to make its role explicit. And add a TODO about making dnsfallback use an update-over-time DERP map file instead of a baked-in one. Updates #1264 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
48 lines
1015 B
Go
48 lines
1015 B
Go
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build ignore
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package main
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"tailscale.com/tailcfg"
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)
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func main() {
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res, err := http.Get("https://login.tailscale.com/derpmap/default")
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if err != nil {
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log.Fatal(err)
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}
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if res.StatusCode != 200 {
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res.Write(os.Stderr)
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os.Exit(1)
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}
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dm := new(tailcfg.DERPMap)
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if err := json.NewDecoder(res.Body).Decode(dm); err != nil {
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log.Fatal(err)
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}
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for rid, r := range dm.Regions {
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// Names misleading to check into git, as this is a
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// static snapshot and doesn't reflect the live DERP
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// map.
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r.RegionCode = fmt.Sprintf("r%d", rid)
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r.RegionName = r.RegionCode
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}
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out, err := json.MarshalIndent(dm, "", "\t")
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if err != nil {
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log.Fatal(err)
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}
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if err := ioutil.WriteFile("dns-fallback-servers.json", out, 0644); err != nil {
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log.Fatal(err)
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}
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}
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