fix: fix app hostname returning port number (#5441)

coderd/coderd.go

@@ -61,6 +61,7 @@ type Options struct {
 	AccessURL *url.URL
 	// AppHostname should be the wildcard hostname to use for workspace
 	// applications INCLUDING the asterisk, (optional) suffix and leading dot.
+	// It will use the same scheme and port number as the access URL.
 	// E.g. "*.apps.coder.com" or "*-apps.coder.com".
 	AppHostname string
 	// AppHostnameRegex contains the regex version of options.AppHostname as

coderd/coderdtest/coderdtest.go

@@ -78,6 +78,10 @@ import (
 )
 
 type Options struct {
+	// AccessURL denotes a custom access URL. By default we use the httptest
+	// server's URL. Setting this may result in unexpected behavior (especially
+	// with running agents).
+	AccessURL            *url.URL
 	AppHostname          string
 	AWSCertificates      awsidentity.Certificates
 	Authorizer           rbac.Authorizer
@@ -144,7 +148,7 @@ func newWithCloser(t *testing.T, options *Options) (*codersdk.Client, io.Closer)
 	return client, closer
 }
 
-func NewOptions(t *testing.T, options *Options) (func(http.Handler), context.CancelFunc, *coderd.Options) {
+func NewOptions(t *testing.T, options *Options) (func(http.Handler), context.CancelFunc, *url.URL, *coderd.Options) {
 	if options == nil {
 		options = &Options{}
 	}
@@ -214,6 +218,11 @@ func NewOptions(t *testing.T, options *Options) (func(http.Handler), context.Can
 	derpPort, err := strconv.Atoi(serverURL.Port())
 	require.NoError(t, err)
 
+	accessURL := options.AccessURL
+	if accessURL == nil {
+		accessURL = serverURL
+	}
+
 	stunAddr, stunCleanup := stuntest.ServeWithPacketListener(t, nettype.Std{})
 	t.Cleanup(stunCleanup)
 
@@ -236,12 +245,12 @@ func NewOptions(t *testing.T, options *Options) (func(http.Handler), context.Can
 			mutex.Lock()
 			defer mutex.Unlock()
 			handler = h
-		}, cancelFunc, &coderd.Options{
+		}, cancelFunc, serverURL, &coderd.Options{
 			AgentConnectionUpdateFrequency: 150 * time.Millisecond,
 			// Force a long disconnection timeout to ensure
 			// agents are not marked as disconnected during slow tests.
 			AgentInactiveDisconnectTimeout: testutil.WaitShort,
-			AccessURL:                      serverURL,
+			AccessURL:                      accessURL,
 			AppHostname:                    options.AppHostname,
 			AppHostnameRegex:               appHostnameRegex,
 			Logger:                         slogtest.Make(t, nil).Leveled(slog.LevelDebug),
@@ -298,7 +307,7 @@ func NewWithAPI(t *testing.T, options *Options) (*codersdk.Client, io.Closer, *c
 	if options == nil {
 		options = &Options{}
 	}
-	setHandler, cancelFunc, newOptions := NewOptions(t, options)
+	setHandler, cancelFunc, serverURL, newOptions := NewOptions(t, options)
 	// We set the handler after server creation for the access URL.
 	coderAPI := coderd.New(newOptions)
 	setHandler(coderAPI.RootHandler)
@@ -306,7 +315,7 @@ func NewWithAPI(t *testing.T, options *Options) (*codersdk.Client, io.Closer, *c
 	if options.IncludeProvisionerDaemon {
 		provisionerCloser = NewProvisionerDaemon(t, coderAPI)
 	}
-	client := codersdk.New(coderAPI.AccessURL)
+	client := codersdk.New(serverURL)
 	t.Cleanup(func() {
 		cancelFunc()
 		_ = provisionerCloser.Close()

coderd/workspaceapps.go

@@ -58,7 +58,7 @@ var nonCanonicalHeaders = map[string]string{
 
 func (api *API) appHost(rw http.ResponseWriter, r *http.Request) {
 	host := api.AppHostname
-	if api.AccessURL.Port() != "" {
+	if host != "" && api.AccessURL.Port() != "" {
 		host += fmt.Sprintf(":%s", api.AccessURL.Port())
 	}
 

coderd/workspaceapps_test.go

@@ -47,17 +47,48 @@ const (
 func TestGetAppHost(t *testing.T) {
 	t.Parallel()
 
-	cases := []string{"", proxyTestSubdomainRaw}
+	cases := []struct {
+		name        string
+		accessURL   string
+		appHostname string
+		expected    string
+	}{
+		{
+			name:        "OK",
+			accessURL:   "https://test.coder.com",
+			appHostname: "*.test.coder.com",
+			expected:    "*.test.coder.com",
+		},
+		{
+			name:        "None",
+			accessURL:   "https://test.coder.com",
+			appHostname: "",
+			expected:    "",
+		},
+		{
+			name:        "OKWithPort",
+			accessURL:   "https://test.coder.com:8443",
+			appHostname: "*.test.coder.com",
+			expected:    "*.test.coder.com:8443",
+		},
+		{
+			name:        "OKWithSuffix",
+			accessURL:   "https://test.coder.com:8443",
+			appHostname: "*--suffix.test.coder.com",
+			expected:    "*--suffix.test.coder.com:8443",
+		},
+	}
 	for _, c := range cases {
 		c := c
-		name := c
-		if name == "" {
-			name = "Empty"
-		}
-		t.Run(name, func(t *testing.T) {
+		t.Run(c.name, func(t *testing.T) {
 			t.Parallel()
+
+			accessURL, err := url.Parse(c.accessURL)
+			require.NoError(t, err)
+
 			client := coderdtest.New(t, &coderdtest.Options{
-				AppHostname: c,
+				AccessURL:   accessURL,
+				AppHostname: c.appHostname,
 			})
 
 			ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
@@ -71,8 +102,7 @@ func TestGetAppHost(t *testing.T) {
 			_ = coderdtest.CreateFirstUser(t, client)
 			host, err = client.GetAppHost(ctx)
 			require.NoError(t, err)
-			domain := strings.Split(host.Host, ":")[0]
-			require.Equal(t, c, domain)
+			require.Equal(t, c.expected, host.Host)
 		})
 	}
 }