Added DERP integration tests

Linting fixes

Set listen addr to :8443

integration/embedded_derp_test.go

@@ -0,0 +1,247 @@
+package integration
+
+import (
+	"fmt"
+	"log"
+	"net/url"
+	"testing"
+
+	"github.com/juanfont/headscale"
+	"github.com/juanfont/headscale/integration/dockertestutil"
+	"github.com/juanfont/headscale/integration/hsic"
+	"github.com/juanfont/headscale/integration/tsic"
+	"github.com/ory/dockertest/v3"
+)
+
+type EmbeddedDERPServerScenario struct {
+	*Scenario
+
+	tsicNetworks map[string]*dockertest.Network
+}
+
+func TestDERPServerScenario(t *testing.T) {
+	IntegrationSkip(t)
+	// t.Parallel()
+
+	baseScenario, err := NewScenario()
+	if err != nil {
+		t.Errorf("failed to create scenario: %s", err)
+	}
+
+	scenario := EmbeddedDERPServerScenario{
+		Scenario:     baseScenario,
+		tsicNetworks: map[string]*dockertest.Network{},
+	}
+
+	spec := map[string]int{
+		"user1": len(TailscaleVersions),
+	}
+
+	headscaleConfig := hsic.DefaultConfigEnv()
+	headscaleConfig["HEADSCALE_LISTEN_ADDR"] = "0.0.0.0:8443"
+	headscaleConfig["HEADSCALE_DERP_URLS"] = ""
+	headscaleConfig["HEADSCALE_DERP_SERVER_ENABLED"] = "true"
+	headscaleConfig["HEADSCALE_DERP_SERVER_REGION_ID"] = "999"
+	headscaleConfig["HEADSCALE_DERP_SERVER_REGION_CODE"] = "headscale"
+	headscaleConfig["HEADSCALE_DERP_SERVER_REGION_NAME"] = "Headscale Embedded DERP"
+	headscaleConfig["HEADSCALE_DERP_SERVER_STUN_LISTEN_ADDR"] = "0.0.0.0:3478"
+
+	err = scenario.CreateHeadscaleEnv(
+		spec,
+		hsic.WithConfigEnv(headscaleConfig),
+		hsic.WithPort(8443),
+		hsic.WithTestName("derpserver"),
+		hsic.WithHostPortBindings(
+			map[string][]string{
+				"8443/tcp": {"8443"},
+				"3478/udp": {"3478"},
+			},
+		),
+		hsic.WithExtraPorts([]string{"3478/udp"}),
+		hsic.WithTLS(),
+		hsic.WithHostnameAsServerURL(),
+	)
+
+	if err != nil {
+		t.Errorf("failed to create headscale environment: %s", err)
+	}
+
+	allClients, err := scenario.ListTailscaleClients()
+	if err != nil {
+		t.Errorf("failed to get clients: %s", err)
+	}
+
+	allIps, err := scenario.ListTailscaleClientsIPs()
+	if err != nil {
+		t.Errorf("failed to get clients: %s", err)
+	}
+
+	err = scenario.WaitForTailscaleSync()
+	if err != nil {
+		t.Errorf("failed wait for tailscale clients to be in sync: %s", err)
+	}
+
+	allHostnames, err := scenario.ListTailscaleClientsFQDNs()
+	if err != nil {
+		t.Errorf("failed to get FQDNs: %s", err)
+	}
+
+	success := pingDerpAllHelper(t, allClients, allHostnames)
+
+	t.Logf("%d successful pings out of %d", success, len(allClients)*len(allIps))
+
+	err = scenario.Shutdown()
+	if err != nil {
+		t.Errorf("failed to tear down scenario: %s", err)
+	}
+}
+
+func (s *EmbeddedDERPServerScenario) CreateHeadscaleEnv(
+	users map[string]int,
+	opts ...hsic.Option,
+) error {
+	hsServer, err := s.Headscale(opts...)
+	if err != nil {
+		return err
+	}
+
+	headscaleEndpoint := hsServer.GetEndpoint()
+	headscaleURL, err := url.Parse(headscaleEndpoint)
+	if err != nil {
+		return err
+	}
+
+	headscaleURL.Host = fmt.Sprintf("%s:%s", hsServer.GetHostname(), headscaleURL.Port())
+
+	extraHosts := []string{
+		"host.docker.internal:host-gateway",
+		fmt.Sprintf("%s:host-gateway", hsServer.GetHostname()),
+	}
+
+	err = hsServer.WaitForReady()
+	if err != nil {
+		return err
+	}
+
+	hash, err := headscale.GenerateRandomStringDNSSafe(scenarioHashLength)
+	if err != nil {
+		return err
+	}
+
+	for userName, clientCount := range users {
+		err = s.CreateUser(userName)
+		if err != nil {
+			return err
+		}
+
+		err = s.CreateTailscaleIsolatedNodesInUser(
+			hash,
+			userName,
+			"all",
+			clientCount,
+			tsic.WithExtraHosts(extraHosts),
+		)
+		if err != nil {
+			return err
+		}
+
+		key, err := s.CreatePreAuthKey(userName, true, false)
+		if err != nil {
+			return err
+		}
+
+		err = s.RunTailscaleUp(userName, headscaleURL.String(), key.GetKey())
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (s *EmbeddedDERPServerScenario) CreateTailscaleIsolatedNodesInUser(
+	hash string,
+	userStr string,
+	requestedVersion string,
+	count int,
+	opts ...tsic.Option,
+) error {
+	if user, ok := s.users[userStr]; ok {
+		for clientN := 0; clientN < count; clientN++ {
+			networkName := fmt.Sprintf("tsnet-%s-%s-%d",
+				hash,
+				userStr,
+				clientN,
+			)
+			network, err := dockertestutil.GetFirstOrCreateNetwork(
+				s.pool,
+				networkName,
+			)
+			if err != nil {
+				return fmt.Errorf("failed to create or get %s network: %w", networkName, err)
+			}
+
+			s.tsicNetworks[networkName] = network
+
+			version := requestedVersion
+			if requestedVersion == "all" {
+				version = TailscaleVersions[clientN%len(TailscaleVersions)]
+			}
+
+			headscale, err := s.Headscale()
+			if err != nil {
+				return fmt.Errorf("failed to create tailscale node: %w", err)
+			}
+
+			cert := headscale.GetCert()
+			hostname := headscale.GetHostname()
+
+			user.createWaitGroup.Add(1)
+
+			opts = append(opts,
+				tsic.WithHeadscaleTLS(cert),
+				tsic.WithHeadscaleName(hostname),
+			)
+
+			go func() {
+				defer user.createWaitGroup.Done()
+
+				// TODO(kradalby): error handle this
+				tsClient, err := tsic.New(
+					s.pool,
+					version,
+					network,
+					opts...,
+				)
+				if err != nil {
+					// return fmt.Errorf("failed to add tailscale node: %w", err)
+					log.Printf("failed to create tailscale node: %s", err)
+				}
+
+				err = tsClient.WaitForReady()
+				if err != nil {
+					// return fmt.Errorf("failed to add tailscale node: %w", err)
+					log.Printf("failed to wait for tailscaled: %s", err)
+				}
+
+				user.Clients[tsClient.Hostname()] = tsClient
+			}()
+		}
+		user.createWaitGroup.Wait()
+
+		return nil
+	}
+
+	return fmt.Errorf("failed to add tailscale node: %w", errNoUserAvailable)
+}
+
+func (s *EmbeddedDERPServerScenario) Shutdown() error {
+	for _, network := range s.tsicNetworks {
+		err := s.pool.RemoveNetwork(network)
+		if err != nil {
+			return err
+		}
+	}
+
+	return s.Scenario.Shutdown()
+}

integration/hsic/hsic.go

@@ -112,7 +112,7 @@ func WithPort(port int) Option {
 	}
 }
 
-// WithExtraPorts exposes additional ports on the container (e.g. 3478/udp for STUN)
+// WithExtraPorts exposes additional ports on the container (e.g. 3478/udp for STUN).
 func WithExtraPorts(ports []string) Option {
 	return func(hsic *HeadscaleInContainer) {
 		hsic.extraPorts = ports
@@ -190,14 +190,14 @@ func New(
 
 	portProto := fmt.Sprintf("%d/tcp", hsic.port)
 
-	serverUrl, err := url.Parse(hsic.env["HEADSCALE_SERVER_URL"])
+	serverURL, err := url.Parse(hsic.env["HEADSCALE_SERVER_URL"])
 	if err != nil {
 		return nil, err
 	}
 
 	if len(hsic.tlsCert) != 0 && len(hsic.tlsKey) != 0 {
-		serverUrl.Scheme = "https"
-		hsic.env["HEADSCALE_SERVER_URL"] = serverUrl.String()
+		serverURL.Scheme = "https"
+		hsic.env["HEADSCALE_SERVER_URL"] = serverURL.String()
 	}
 
 	headscaleBuildOptions := &dockertest.BuildOptions{

integration/tsic/tsic.go

@@ -499,15 +499,6 @@ type (
 	}
 )
 
-type (
-	DERPPingOption = func(args *derpPingArgs)
-
-	derpPingArgs struct {
-		timeout time.Duration
-		count   int
-	}
-)
-
 // WithPingTimeout sets the timeout for the ping command.
 func WithPingTimeout(timeout time.Duration) PingOption {
 	return func(args *pingArgs) {
@@ -605,7 +596,7 @@ func (t *TailscaleInContainer) PingViaDERP(hostnameOrIP string, opts ...PingOpti
 			),
 		)
 		if err != nil {
-			fmt.Printf(
+			log.Printf(
 				"failed to run ping command from %s to %s, err: %s",
 				t.Hostname(),
 				hostnameOrIP,

integration/utils.go

@@ -7,6 +7,11 @@ import (
 	"github.com/juanfont/headscale/integration/tsic"
 )
 
+const (
+	derpPingTimeout = 2 * time.Second
+	derpPingCount   = 10
+)
+
 func pingAllHelper(t *testing.T, clients []TailscaleClient, addrs []string) int {
 	t.Helper()
 	success := 0
@@ -37,8 +42,8 @@ func pingDerpAllHelper(t *testing.T, clients []TailscaleClient, addrs []string)
 
 			err := client.PingViaDERP(
 				addr,
-				tsic.WithPingTimeout(2*time.Second),
-				tsic.WithPingCount(10),
+				tsic.WithPingTimeout(derpPingTimeout),
+				tsic.WithPingCount(derpPingCount),
 			)
 			if err != nil {
 				t.Errorf("failed to ping %s from %s: %s", addr, client.Hostname(), err)