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e6b84f2159
Instead of hard-coding the DERP map (except for cmd/tailscale netcheck for now), get it from the control server at runtime. And make the DERP map support multiple nodes per region with clients picking the first one that's available. (The server will balance the order presented to clients for load balancing) This deletes the stunner package, merging it into the netcheck package instead, to minimize all the config hooks that would've been required. Also fix some test flakes & races. Fixes #387 (Don't hard-code the DERP map) Updates #388 (Add DERP region support) Fixes #399 (wgengine: flaky tests) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
66 lines
1.7 KiB
Go
66 lines
1.7 KiB
Go
// Copyright (c) 2020 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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// Package derpmap contains information about Tailscale.com's production DERP nodes.
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package derpmap
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import (
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"fmt"
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"strings"
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"tailscale.com/tailcfg"
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)
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func derpNode(suffix, v4, v6 string) *tailcfg.DERPNode {
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return &tailcfg.DERPNode{
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Name: suffix, // updated later
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RegionID: 0, // updated later
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IPv4: v4,
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IPv6: v6,
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}
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}
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func derpRegion(id int, code string, nodes ...*tailcfg.DERPNode) *tailcfg.DERPRegion {
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region := &tailcfg.DERPRegion{
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RegionID: id,
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RegionCode: code,
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Nodes: nodes,
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}
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for _, n := range nodes {
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n.Name = fmt.Sprintf("%d%s", id, n.Name)
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n.RegionID = id
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n.HostName = fmt.Sprintf("derp%s.tailscale.com", strings.TrimSuffix(n.Name, "a"))
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}
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return region
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}
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// Prod returns Tailscale's map of relay servers.
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//
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// This list is only used by cmd/tailscale's netcheck subcommand. In
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// normal operation the Tailscale nodes get this sent to them from the
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// control server.
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//
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// This list is subject to change and should not be relied on.
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func Prod() *tailcfg.DERPMap {
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return &tailcfg.DERPMap{
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Regions: map[int]*tailcfg.DERPRegion{
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1: derpRegion(1, "nyc",
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derpNode("a", "159.89.225.99", "2604:a880:400:d1::828:b001"),
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),
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2: derpRegion(2, "sfo",
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derpNode("a", "167.172.206.31", "2604:a880:2:d1::c5:7001"),
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),
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3: derpRegion(3, "sin",
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derpNode("a", "68.183.179.66", "2400:6180:0:d1::67d:8001"),
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),
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4: derpRegion(4, "fra",
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derpNode("a", "167.172.182.26", "2a03:b0c0:3:e0::36e:9001"),
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),
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5: derpRegion(5, "syd",
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derpNode("a", "103.43.75.49", "2001:19f0:5801:10b7:5400:2ff:feaa:284c"),
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),
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},
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}
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}
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