mirror of https://github.com/coder/coder.git
165 lines
4.6 KiB
Go
165 lines
4.6 KiB
Go
package tailnet_test
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import (
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"context"
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"encoding/json"
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"net/http"
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"net/http/httptest"
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"os"
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"path/filepath"
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"testing"
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"github.com/stretchr/testify/require"
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"tailscale.com/tailcfg"
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"github.com/coder/coder/v2/tailnet"
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)
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func TestNewDERPMap(t *testing.T) {
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t.Parallel()
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t.Run("WithoutRemoteURL", func(t *testing.T) {
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t.Parallel()
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derpMap, err := tailnet.NewDERPMap(context.Background(), &tailcfg.DERPRegion{
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RegionID: 1,
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Nodes: []*tailcfg.DERPNode{{}},
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}, []string{"stun.google.com:2345"}, "", "", false)
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require.NoError(t, err)
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require.Len(t, derpMap.Regions, 2)
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require.Len(t, derpMap.Regions[1].Nodes, 1)
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require.Len(t, derpMap.Regions[2].Nodes, 1)
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})
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t.Run("RemoteURL", func(t *testing.T) {
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t.Parallel()
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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data, _ := json.Marshal(&tailcfg.DERPMap{
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Regions: map[int]*tailcfg.DERPRegion{
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1: {
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RegionID: 1,
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Nodes: []*tailcfg.DERPNode{{}},
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},
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},
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})
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_, _ = w.Write(data)
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}))
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t.Cleanup(server.Close)
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derpMap, err := tailnet.NewDERPMap(context.Background(), &tailcfg.DERPRegion{
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RegionID: 2,
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}, []string{}, server.URL, "", false)
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require.NoError(t, err)
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require.Len(t, derpMap.Regions, 2)
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})
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t.Run("RemoteConflicts", func(t *testing.T) {
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t.Parallel()
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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data, _ := json.Marshal(&tailcfg.DERPMap{
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Regions: map[int]*tailcfg.DERPRegion{
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1: {},
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},
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})
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_, _ = w.Write(data)
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}))
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t.Cleanup(server.Close)
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_, err := tailnet.NewDERPMap(context.Background(), &tailcfg.DERPRegion{
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RegionID: 1,
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}, []string{}, server.URL, "", false)
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require.Error(t, err)
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})
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t.Run("LocalPath", func(t *testing.T) {
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t.Parallel()
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localPath := filepath.Join(t.TempDir(), "derp.json")
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content, err := json.Marshal(&tailcfg.DERPMap{
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Regions: map[int]*tailcfg.DERPRegion{
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1: {
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Nodes: []*tailcfg.DERPNode{{}},
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},
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},
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})
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require.NoError(t, err)
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err = os.WriteFile(localPath, content, 0o600)
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require.NoError(t, err)
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derpMap, err := tailnet.NewDERPMap(context.Background(), &tailcfg.DERPRegion{
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RegionID: 2,
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}, []string{}, "", localPath, false)
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require.NoError(t, err)
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require.Len(t, derpMap.Regions, 2)
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})
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t.Run("DisableSTUN", func(t *testing.T) {
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t.Parallel()
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localPath := filepath.Join(t.TempDir(), "derp.json")
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content, err := json.Marshal(&tailcfg.DERPMap{
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Regions: map[int]*tailcfg.DERPRegion{
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1: {
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Nodes: []*tailcfg.DERPNode{{
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STUNPort: 1234,
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}},
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},
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2: {
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Nodes: []*tailcfg.DERPNode{
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{
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STUNPort: 1234,
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},
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{
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STUNPort: 12345,
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},
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{
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STUNOnly: true,
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STUNPort: 54321,
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},
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},
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},
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},
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})
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require.NoError(t, err)
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err = os.WriteFile(localPath, content, 0o600)
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require.NoError(t, err)
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region := &tailcfg.DERPRegion{
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RegionID: 3,
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Nodes: []*tailcfg.DERPNode{{
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STUNPort: 1234,
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}},
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}
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derpMap, err := tailnet.NewDERPMap(context.Background(), region, []string{"127.0.0.1:54321"}, "", localPath, true)
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require.NoError(t, err)
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require.Len(t, derpMap.Regions, 3)
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require.Len(t, derpMap.Regions[1].Nodes, 1)
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require.EqualValues(t, -1, derpMap.Regions[1].Nodes[0].STUNPort)
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// The STUNOnly node should get removed.
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require.Len(t, derpMap.Regions[2].Nodes, 2)
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require.EqualValues(t, -1, derpMap.Regions[2].Nodes[0].STUNPort)
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require.False(t, derpMap.Regions[2].Nodes[0].STUNOnly)
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require.EqualValues(t, -1, derpMap.Regions[2].Nodes[1].STUNPort)
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require.False(t, derpMap.Regions[2].Nodes[1].STUNOnly)
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// We don't add any nodes ourselves if STUN is disabled.
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require.Len(t, derpMap.Regions[3].Nodes, 1)
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// ... but we still remove the STUN port from existing nodes in the
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// region.
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require.EqualValues(t, -1, derpMap.Regions[3].Nodes[0].STUNPort)
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})
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t.Run("RequireRegions", func(t *testing.T) {
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t.Parallel()
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_, err := tailnet.NewDERPMap(context.Background(), nil, nil, "", "", false)
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require.Error(t, err)
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require.ErrorContains(t, err, "DERP map has no regions")
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})
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t.Run("RequireDERPNodes", func(t *testing.T) {
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t.Parallel()
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// No nodes.
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_, err := tailnet.NewDERPMap(context.Background(), &tailcfg.DERPRegion{}, nil, "", "", false)
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require.Error(t, err)
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require.ErrorContains(t, err, "DERP map has no DERP nodes")
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// No DERP nodes.
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_, err = tailnet.NewDERPMap(context.Background(), &tailcfg.DERPRegion{
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Nodes: []*tailcfg.DERPNode{
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{
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STUNOnly: true,
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},
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},
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}, nil, "", "", false)
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require.Error(t, err)
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require.ErrorContains(t, err, "DERP map has no DERP nodes")
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})
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}
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