Method Start

tailcat.go:1161–1254

()

}

func (lb *locoBackend) Start() error {
	if err := lb.ns.Start(nil /* no LocalBackend */); err != nil {
		return fmt.Errorf("failed to start netstack: %w", err)
	}

	e := lb.sys.Engine.Get()
	mc := lb.sys.MagicSock.Get()
	lb.logf("disco pub key: %v", mc.DiscoPublicKey())

	mc.SetPrivateKey(lb.priv)
	mc.SetDERPMap(lb.dm)

	derpRegion := lb.derpRegionID()

	nm := &netmap.NetworkMap{
		NodeKey: lb.pub,
	}
	if lb.serverPub.IsZero() {
		// We're the server. (hence the serverPub is zero)
		nm.SelfNode = (&tailcfg.Node{
			ID:         1,
			StableID:   "1",
			Name:       "server.tailcat.",
			User:       100,
			Key:        lb.pub,
			DiscoKey:   mc.DiscoPublicKey(),
			Addresses:  []netip.Prefix{lb.addrPrefix},
			AllowedIPs: []netip.Prefix{lb.addrPrefix, allIPv6},
			HomeDERP:   derpRegion,
		}).View()
	} else {
		// We're the client.
		serverAddr := tcAddrForKey(lb.serverPub)
		serverAddrPrefix := netip.PrefixFrom(serverAddr, serverAddr.BitLen())

		nm.SelfNode = (&tailcfg.Node{
			ID:        2,
			StableID:  "2",
			Name:      "client.tailcat.",
			User:      100,
			Key:       lb.pub,
			DiscoKey:  mc.DiscoPublicKey(),
			Addresses: []netip.Prefix{lb.addrPrefix},
			HomeDERP:  derpRegion,
		}).View()
		nm.Peers = append(nm.Peers, (&tailcfg.Node{
			ID:         1,
			StableID:   "1",
			Name:       "server.tailcat.",
			User:       100,
			Key:        lb.serverPub,
			DiscoKey:   nodePublicAsDiscoPublic(lb.serverPub),
			Addresses:  []netip.Prefix{serverAddrPrefix},
			AllowedIPs: []netip.Prefix{serverAddrPrefix, allIPv6},
			HomeDERP:   derpRegion,
		}).View())
	}
	lb.mu.Lock()