Update SetupAndServeHTTP

cmd/dendrite-appservice-server/main.go

@@ -30,6 +30,8 @@ func main() {
 	intAPI := appservice.NewInternalAPI(base, userAPI, rsAPI)
 	appservice.AddInternalRoutes(base.InternalAPIMux, intAPI)
 
-	base.SetupAndServeHTTP(string(base.Cfg.AppServiceAPI.Bind), string(base.Cfg.AppServiceAPI.Listen))
-
+	base.SetupAndServeHTTP(
+		base.Cfg.AppServiceAPI.InternalAPI.Listen,
+		setup.NoExternalListener,
+	)
 }

cmd/dendrite-client-api-server/main.go

@@ -43,6 +43,8 @@ func main() {
 		rsAPI, eduInputAPI, asQuery, stateAPI, transactions.New(), fsAPI, userAPI, keyAPI, nil,
 	)
 
-	base.SetupAndServeHTTP(string(base.Cfg.ClientAPI.Bind), string(base.Cfg.ClientAPI.Listen))
-
+	base.SetupAndServeHTTP(
+		base.Cfg.ClientAPI.InternalAPI.Listen,
+		base.Cfg.ClientAPI.ExternalAPI.Listen,
+	)
 }

cmd/dendrite-current-state-server/main.go

@@ -28,6 +28,8 @@ func main() {
 
 	currentstateserver.AddInternalRoutes(base.InternalAPIMux, stateAPI)
 
-	base.SetupAndServeHTTP(string(base.Cfg.CurrentStateServer.Bind), string(base.Cfg.CurrentStateServer.Listen))
-
+	base.SetupAndServeHTTP(
+		base.Cfg.CurrentStateServer.InternalAPI.Listen,
+		setup.NoExternalListener,
+	)
 }

cmd/dendrite-edu-server/main.go

@@ -33,6 +33,8 @@ func main() {
 	intAPI := eduserver.NewInternalAPI(base, cache.New(), base.UserAPIClient())
 	eduserver.AddInternalRoutes(base.InternalAPIMux, intAPI)
 
-	base.SetupAndServeHTTP(string(base.Cfg.EDUServer.Bind), string(base.Cfg.EDUServer.Listen))
-
+	base.SetupAndServeHTTP(
+		base.Cfg.EDUServer.InternalAPI.Listen,
+		setup.NoExternalListener,
+	)
 }

cmd/dendrite-federation-api-server/main.go

@@ -37,6 +37,8 @@ func main() {
 		rsAPI, fsAPI, base.EDUServerClient(), base.CurrentStateAPIClient(), keyAPI,
 	)
 
-	base.SetupAndServeHTTP(string(base.Cfg.FederationAPI.Bind), string(base.Cfg.FederationAPI.Listen))
-
+	base.SetupAndServeHTTP(
+		base.Cfg.FederationAPI.InternalAPI.Listen,
+		base.Cfg.FederationAPI.ExternalAPI.Listen,
+	)
 }

cmd/dendrite-federation-sender-server/main.go

@@ -35,6 +35,8 @@ func main() {
 	)
 	federationsender.AddInternalRoutes(base.InternalAPIMux, fsAPI)
 
-	base.SetupAndServeHTTP(string(base.Cfg.FederationSender.Bind), string(base.Cfg.FederationSender.Listen))
-
+	base.SetupAndServeHTTP(
+		base.Cfg.FederationSender.InternalAPI.Listen,
+		setup.NoExternalListener,
+	)
 }

cmd/dendrite-key-server/main.go

@@ -29,6 +29,8 @@ func main() {
 
 	keyserver.AddInternalRoutes(base.InternalAPIMux, intAPI)
 
-	base.SetupAndServeHTTP(string(base.Cfg.KeyServer.Bind), string(base.Cfg.KeyServer.Listen))
-
+	base.SetupAndServeHTTP(
+		base.Cfg.KeyServer.InternalAPI.Listen,
+		setup.NoExternalListener,
+	)
 }

cmd/dendrite-media-api-server/main.go

@@ -30,6 +30,8 @@ func main() {
 
 	mediaapi.AddPublicRoutes(base.PublicAPIMux, &base.Cfg.MediaAPI, userAPI, client)
 
-	base.SetupAndServeHTTP(string(base.Cfg.MediaAPI.Bind), string(base.Cfg.MediaAPI.Listen))
-
+	base.SetupAndServeHTTP(
+		base.Cfg.MediaAPI.InternalAPI.Listen,
+		base.Cfg.MediaAPI.ExternalAPI.Listen,
+	)
 }

cmd/dendrite-monolith-server/main.go

@@ -16,7 +16,7 @@ package main
 
 import (
 	"flag"
-	"net/http"
+	"fmt"
 	"os"
 
 	"github.com/matrix-org/dendrite/appservice"
@@ -25,7 +25,6 @@ import (
 	"github.com/matrix-org/dendrite/eduserver/cache"
 	"github.com/matrix-org/dendrite/federationsender"
 	"github.com/matrix-org/dendrite/internal/config"
-	"github.com/matrix-org/dendrite/internal/httputil"
 	"github.com/matrix-org/dendrite/internal/setup"
 	"github.com/matrix-org/dendrite/keyserver"
 	"github.com/matrix-org/dendrite/roomserver"
@@ -33,8 +32,6 @@ import (
 	"github.com/matrix-org/dendrite/serverkeyapi"
 	"github.com/matrix-org/dendrite/userapi"
 	"github.com/matrix-org/gomatrixserverlib"
-
-	"github.com/sirupsen/logrus"
 )
 
 var (
@@ -48,23 +45,25 @@ var (
 
 func main() {
 	cfg := setup.ParseFlags(true)
+	httpAddr := config.HTTPAddress("http://" + *httpBindAddr)
+	httpsAddr := config.HTTPAddress("https://" + *httpsBindAddr)
+
 	if *enableHTTPAPIs {
 		// If the HTTP APIs are enabled then we need to update the Listen
 		// statements in the configuration so that we know where to find
 		// the API endpoints. They'll listen on the same port as the monolith
 		// itself.
-		addr := config.HTTPAddress("http://" + *httpBindAddr)
-		cfg.AppServiceAPI.InternalAPI.Connect = addr
-		cfg.ClientAPI.InternalAPI.Connect = addr
-		cfg.CurrentStateServer.InternalAPI.Connect = addr
-		cfg.EDUServer.InternalAPI.Connect = addr
-		cfg.FederationAPI.InternalAPI.Connect = addr
-		cfg.FederationSender.InternalAPI.Connect = addr
-		cfg.KeyServer.InternalAPI.Connect = addr
-		cfg.MediaAPI.InternalAPI.Connect = addr
-		cfg.RoomServer.InternalAPI.Connect = addr
-		cfg.ServerKeyAPI.InternalAPI.Connect = addr
-		cfg.SyncAPI.InternalAPI.Connect = addr
+		cfg.AppServiceAPI.InternalAPI.Connect = httpAddr
+		cfg.ClientAPI.InternalAPI.Connect = httpAddr
+		cfg.CurrentStateServer.InternalAPI.Connect = httpAddr
+		cfg.EDUServer.InternalAPI.Connect = httpAddr
+		cfg.FederationAPI.InternalAPI.Connect = httpAddr
+		cfg.FederationSender.InternalAPI.Connect = httpAddr
+		cfg.KeyServer.InternalAPI.Connect = httpAddr
+		cfg.MediaAPI.InternalAPI.Connect = httpAddr
+		cfg.RoomServer.InternalAPI.Connect = httpAddr
+		cfg.ServerKeyAPI.InternalAPI.Connect = httpAddr
+		cfg.SyncAPI.InternalAPI.Connect = httpAddr
 	}
 
 	base := setup.NewBaseDendrite(cfg, "Monolith", *enableHTTPAPIs)
@@ -149,6 +148,10 @@ func main() {
 	}
 	monolith.AddAllPublicRoutes(base.PublicAPIMux)
 
+	fmt.Printf("Public: %+v\n", base.PublicAPIMux)
+	fmt.Printf("Internal: %+v\n", base.InternalAPIMux)
+
+	/*
 		httputil.SetupHTTPAPI(
 			base.BaseMux,
 			base.PublicAPIMux,
@@ -156,16 +159,22 @@ func main() {
 			&cfg.Global,
 			base.UseHTTPAPIs,
 		)
+	*/
 
 	// Expose the matrix APIs directly rather than putting them under a /api path.
 	go func() {
-		base.SetupAndServeHTTP(*httpBindAddr, *httpBindAddr)
+		base.SetupAndServeHTTP(
+			config.HTTPAddress(httpAddr), // internal API
+			config.HTTPAddress(httpAddr), // external API
+		)
 	}()
 	// Handle HTTPS if certificate and key are provided
+	_ = httpsAddr
+	/*
 		if *certFile != "" && *keyFile != "" {
 			go func() {
 				serv := http.Server{
-				Addr:         *httpsBindAddr,
+					Addr:         config.HTTPAddress(httpsAddr).,
 					WriteTimeout: setup.HTTPServerTimeout,
 					Handler:      base.BaseMux,
 				}
@@ -174,6 +183,7 @@ func main() {
 				logrus.Fatal(serv.ListenAndServeTLS(*certFile, *keyFile))
 			}()
 		}
+	*/
 
 	// We want to block forever to let the HTTP and HTTPS handler serve the APIs
 	select {}

cmd/dendrite-room-server/main.go

@@ -33,6 +33,8 @@ func main() {
 	rsAPI.SetFederationSenderAPI(fsAPI)
 	roomserver.AddInternalRoutes(base.InternalAPIMux, rsAPI)
 
-	base.SetupAndServeHTTP(string(base.Cfg.RoomServer.Bind), string(base.Cfg.RoomServer.Listen))
-
+	base.SetupAndServeHTTP(
+		base.Cfg.RoomServer.InternalAPI.Listen,
+		setup.NoExternalListener,
+	)
 }

cmd/dendrite-server-key-api-server/main.go

@@ -29,5 +29,8 @@ func main() {
 	intAPI := serverkeyapi.NewInternalAPI(&base.Cfg.ServerKeyAPI, federation, base.Caches)
 	serverkeyapi.AddInternalRoutes(base.InternalAPIMux, intAPI, base.Caches)
 
-	base.SetupAndServeHTTP(string(base.Cfg.ServerKeyAPI.Bind), string(base.Cfg.ServerKeyAPI.Listen))
+	base.SetupAndServeHTTP(
+		base.Cfg.ServerKeyAPI.InternalAPI.Listen,
+		setup.NoExternalListener,
+	)
 }

cmd/dendrite-sync-api-server/main.go

@@ -33,6 +33,8 @@ func main() {
 		base.PublicAPIMux, base.KafkaConsumer, userAPI, rsAPI, base.KeyServerHTTPClient(), base.CurrentStateAPIClient(),
 		federation, &cfg.SyncAPI)
 
-	base.SetupAndServeHTTP(string(base.Cfg.SyncAPI.Bind), string(base.Cfg.SyncAPI.Listen))
-
+	base.SetupAndServeHTTP(
+		base.Cfg.SyncAPI.InternalAPI.Listen,
+		setup.NoExternalListener,
+	)
 }

cmd/dendrite-user-api-server/main.go

@@ -31,5 +31,8 @@ func main() {
 
 	userapi.AddInternalRoutes(base.InternalAPIMux, userAPI)
 
-	base.SetupAndServeHTTP(string(base.Cfg.UserAPI.Bind), string(base.Cfg.UserAPI.Listen))
+	base.SetupAndServeHTTP(
+		base.Cfg.UserAPI.InternalAPI.Listen,
+		setup.NoExternalListener,
+	)
 }

cmd/generate-keys/main.go

@@ -45,6 +45,11 @@ func main() {
 
 	flag.Parse()
 
+	if *tlsCertFile == "" && *tlsKeyFile == "" && *privateKeyFile == "" {
+		flag.Usage()
+		return
+	}
+
 	if *tlsCertFile != "" || *tlsKeyFile != "" {
 		if *tlsCertFile == "" || *tlsKeyFile == "" {
 			log.Fatal("Zero or both of --tls-key and --tls-cert must be supplied")

cmd/mediaapi-integration-tests/main.go

@@ -120,7 +120,7 @@ func startMediaAPI(suffix string, dynamicThumbnails bool) (*exec.Cmd, chan error
 		serverArgs,
 	)
 
-	fmt.Printf("==TESTSERVER== STARTED %v -> %v : %v\n", proxyAddr, cfg.MediaAPI.Listen, dir)
+	fmt.Printf("==TESTSERVER== STARTED %v -> %v : %v\n", proxyAddr, cfg.MediaAPI.InternalAPI.Listen, dir)
 	return cmd, cmdChan, proxyCmd, proxyAddr, dir
 }
 

cmd/roomserver-integration-tests/main.go

@@ -278,7 +278,7 @@ func testRoomserver(input []string, wantOutput []string, checkQueries func(api.R
 	cmd.Args = []string{"dendrite-room-server", "--config", filepath.Join(dir, test.ConfigFile)}
 
 	gotOutput, err := runAndReadFromTopic(cmd, cfg.RoomServerURL()+"/metrics", doInput, outputTopic, len(wantOutput), func() {
-		queryAPI, _ := inthttp.NewRoomserverClient("http://"+string(cfg.RoomServer.Listen), &http.Client{Timeout: timeoutHTTP}, cache)
+		queryAPI, _ := inthttp.NewRoomserverClient("http://"+string(cfg.RoomServer.InternalAPI.Connect), &http.Client{Timeout: timeoutHTTP}, cache)
 		checkQueries(queryAPI)
 	})
 	if err != nil {

cmd/syncserver-integration-tests/main.go

@@ -133,7 +133,8 @@ func startSyncServer() (*exec.Cmd, chan error) {
 	}
 	// TODO use the address assigned by the config generator rather than clobbering.
 	cfg.Global.ServerName = "localhost"
-	cfg.SyncAPI.Listen = config.Address(syncserverAddr)
+	cfg.SyncAPI.InternalAPI.Listen = config.HTTPAddress("http://" + syncserverAddr)
+	cfg.SyncAPI.InternalAPI.Connect = cfg.SyncAPI.InternalAPI.Listen
 
 	if err := test.WriteConfig(cfg, dir); err != nil {
 		panic(err)

federationsender/inthttp/server.go

@@ -26,7 +26,8 @@ func AddRoutes(intAPI api.FederationSenderInternalAPI, internalAPIMux *mux.Route
 			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
 		}),
 	)
-	internalAPIMux.Handle(FederationSenderPerformJoinRequestPath,
+	internalAPIMux.Handle(
+		FederationSenderPerformJoinRequestPath,
 		httputil.MakeInternalAPI("PerformJoinRequest", func(req *http.Request) util.JSONResponse {
 			var request api.PerformJoinRequest
 			var response api.PerformJoinResponse
@@ -37,7 +38,8 @@ func AddRoutes(intAPI api.FederationSenderInternalAPI, internalAPIMux *mux.Route
 			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
 		}),
 	)
-	internalAPIMux.Handle(FederationSenderPerformLeaveRequestPath,
+	internalAPIMux.Handle(
+		FederationSenderPerformLeaveRequestPath,
 		httputil.MakeInternalAPI("PerformLeaveRequest", func(req *http.Request) util.JSONResponse {
 			var request api.PerformLeaveRequest
 			var response api.PerformLeaveResponse
@@ -50,7 +52,8 @@ func AddRoutes(intAPI api.FederationSenderInternalAPI, internalAPIMux *mux.Route
 			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
 		}),
 	)
-	internalAPIMux.Handle(FederationSenderPerformDirectoryLookupRequestPath,
+	internalAPIMux.Handle(
+		FederationSenderPerformDirectoryLookupRequestPath,
 		httputil.MakeInternalAPI("PerformDirectoryLookupRequest", func(req *http.Request) util.JSONResponse {
 			var request api.PerformDirectoryLookupRequest
 			var response api.PerformDirectoryLookupResponse
@@ -63,7 +66,8 @@ func AddRoutes(intAPI api.FederationSenderInternalAPI, internalAPIMux *mux.Route
 			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
 		}),
 	)
-	internalAPIMux.Handle(FederationSenderPerformServersAlivePath,
+	internalAPIMux.Handle(
+		FederationSenderPerformServersAlivePath,
 		httputil.MakeInternalAPI("PerformServersAliveRequest", func(req *http.Request) util.JSONResponse {
 			var request api.PerformServersAliveRequest
 			var response api.PerformServersAliveResponse
@@ -76,7 +80,8 @@ func AddRoutes(intAPI api.FederationSenderInternalAPI, internalAPIMux *mux.Route
 			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
 		}),
 	)
-	internalAPIMux.Handle(FederationSenderPerformBroadcastEDUPath,
+	internalAPIMux.Handle(
+		FederationSenderPerformBroadcastEDUPath,
 		httputil.MakeInternalAPI("PerformBroadcastEDU", func(req *http.Request) util.JSONResponse {
 			var request api.PerformBroadcastEDURequest
 			var response api.PerformBroadcastEDUResponse

internal/config/config.go

@@ -145,7 +145,7 @@ type Address string
 // An HTTPAddress to listen on, starting with either http:// or https://.
 type HTTPAddress string
 
-func (h HTTPAddress) GetAddress() (Address, error) {
+func (h HTTPAddress) Address() (Address, error) {
 	url, err := url.Parse(string(h))
 	if err != nil {
 		return "", err

internal/httputil/httpapi.go

@@ -28,7 +28,6 @@ import (
 	"github.com/gorilla/mux"
 	"github.com/matrix-org/dendrite/clientapi/auth"
 	federationsenderAPI "github.com/matrix-org/dendrite/federationsender/api"
-	"github.com/matrix-org/dendrite/internal/config"
 	userapi "github.com/matrix-org/dendrite/userapi/api"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/util"
@@ -233,27 +232,6 @@ func (f *FederationWakeups) Wakeup(ctx context.Context, origin gomatrixserverlib
 	}
 }
 
-// SetupHTTPAPI registers both internal and external HTTP APIs.
-func SetupHTTPAPI(servMux, publicApiMux, internalApiMux *mux.Router, cfg *config.Global, enableHTTPAPIs bool) {
-	SetupInternalHTTPAPI(servMux, internalApiMux, cfg, enableHTTPAPIs)
-	SetupExternalHTTPAPI(servMux, publicApiMux, cfg)
-}
-
-// SetupInternalHTTPAPI registers internal APIs and metrics only.
-func SetupInternalHTTPAPI(servMux, internalApiMux *mux.Router, cfg *config.Global, enableHTTPAPIs bool) {
-	if cfg.Metrics.Enabled {
-		servMux.Handle("/metrics", WrapHandlerInBasicAuth(promhttp.Handler(), cfg.Metrics.BasicAuth))
-	}
-	if enableHTTPAPIs {
-		servMux.Handle(InternalPathPrefix, internalApiMux)
-	}
-}
-
-// SetupExternalHTTPAPI registers public APIs only.
-func SetupExternalHTTPAPI(servMux, publicApiMux *mux.Router, cfg *config.Global) {
-	servMux.Handle(PublicPathPrefix, WrapHandlerInCORS(publicApiMux))
-}
-
 // WrapHandlerInBasicAuth adds basic auth to a handler. Only used for /metrics
 func WrapHandlerInBasicAuth(h http.Handler, b BasicAuth) http.HandlerFunc {
 	if b.Username == "" || b.Password == "" {

internal/httputil/paths.go

@@ -15,6 +15,6 @@
 package httputil
 
 const (
-	PublicPathPrefix   = "/_matrix/"
-	InternalPathPrefix = "/api/"
+	PublicPathPrefix   = "/_matrix"
+	InternalPathPrefix = "/api"
 )

internal/setup/base.go

@@ -19,7 +19,6 @@ import (
 	"io"
 	"net/http"
 	"net/url"
-	"sync"
 	"time"
 
 	currentstateAPI "github.com/matrix-org/dendrite/currentstateserver/api"
@@ -69,7 +68,6 @@ type BaseDendrite struct {
 	// PublicAPIMux should be used to register new public matrix api endpoints
 	PublicAPIMux   *mux.Router
 	InternalAPIMux *mux.Router
-	BaseMux        *mux.Router // base router which created public/internal subrouters
 	UseHTTPAPIs    bool
 	httpClient     *http.Client
 	Cfg            *config.Dendrite
@@ -81,6 +79,8 @@ type BaseDendrite struct {
 const HTTPServerTimeout = time.Minute * 5
 const HTTPClientTimeout = time.Second * 30
 
+const NoExternalListener = ""
+
 // NewBaseDendrite creates a new instance to be used by a component.
 // The componentName is used for logging purposes, and should be a friendly name
 // of the compontent running, e.g. "SyncAPI"
@@ -135,17 +135,14 @@ func NewBaseDendrite(cfg *config.Dendrite, componentName string, useHTTPAPIs boo
 	// We need to be careful with media APIs if they read from a filesystem to make sure they
 	// are not inadvertently reading paths without cleaning, else this could introduce a
 	// directory traversal attack e.g /../../../etc/passwd
-	httpmux := mux.NewRouter().SkipClean(true)
-
 	return &BaseDendrite{
 		componentName:  componentName,
 		UseHTTPAPIs:    useHTTPAPIs,
 		tracerCloser:   closer,
 		Cfg:            cfg,
 		Caches:         cache,
-		BaseMux:        httpmux,
-		PublicAPIMux:   httpmux.PathPrefix(httputil.PublicPathPrefix).Subrouter().UseEncodedPath(),
-		InternalAPIMux: httpmux.PathPrefix(httputil.InternalPathPrefix).Subrouter().UseEncodedPath(),
+		PublicAPIMux:   mux.NewRouter().SkipClean(true).PathPrefix(httputil.PublicPathPrefix).Subrouter().UseEncodedPath(),
+		InternalAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.InternalPathPrefix).Subrouter().UseEncodedPath(),
 		httpClient:     &client,
 		KafkaConsumer:  kafkaConsumer,
 		KafkaProducer:  kafkaProducer,
@@ -267,65 +264,55 @@ func (b *BaseDendrite) CreateFederationClient() *gomatrixserverlib.FederationCli
 
 // SetupAndServeHTTP sets up the HTTP server to serve endpoints registered on
 // ApiMux under /api/ and adds a prometheus handler under /metrics.
-func (b *BaseDendrite) SetupAndServeHTTP(internaladdr, externaladdr string) {
-	var wg sync.WaitGroup
+func (b *BaseDendrite) SetupAndServeHTTP(internalHTTPAddr, externalHTTPAddr config.HTTPAddress) {
+	block := make(chan struct{})
 
-	externalRouter := mux.NewRouter().SkipClean(true)
-	internalRouter := externalRouter
-	if internaladdr != externaladdr {
-		internalRouter = mux.NewRouter().SkipClean(true)
-	}
+	internalAddr, _ := internalHTTPAddr.Address()
+	externalAddr, _ := externalHTTPAddr.Address()
 
-	externalServ := &http.Server{
-		Addr:         externaladdr,
-		WriteTimeout: HTTPServerTimeout,
-		Handler:      externalRouter,
-	}
-	internalServ := externalServ
-	if internaladdr != externaladdr {
-		internalServ = &http.Server{
-			Addr:         internaladdr,
+	internalRouter := mux.NewRouter()
+	externalRouter := internalRouter
+
+	internalServ := &http.Server{
+		Addr:         string(internalAddr),
 		WriteTimeout: HTTPServerTimeout,
 		Handler:      internalRouter,
 	}
+	externalServ := internalServ
+
+	if externalAddr != internalAddr {
+		externalRouter = mux.NewRouter()
+		externalServ = &http.Server{
+			Addr:         string(externalAddr),
+			WriteTimeout: HTTPServerTimeout,
+			Handler:      externalRouter,
+		}
 	}
 
-	httputil.SetupExternalHTTPAPI(
-		externalRouter,
-		b.PublicAPIMux,
-		&b.Cfg.Global,
-	)
+	internalRouter.PathPrefix(httputil.InternalPathPrefix).Handler(b.InternalAPIMux)
+	externalRouter.PathPrefix(httputil.PublicPathPrefix).Handler(b.PublicAPIMux)
 
-	httputil.SetupInternalHTTPAPI(
-		internalRouter,
-		b.InternalAPIMux,
-		&b.Cfg.Global,
-		b.UseHTTPAPIs,
-	)
-
-	wg.Add(1)
 	go func() {
-		defer wg.Done()
-		logrus.Infof("Starting %s external APIs on %s", b.componentName, externalServ.Addr)
-		if err := externalServ.ListenAndServe(); err != nil {
-			logrus.WithError(err).Fatal("failed to serve http")
-		}
-		logrus.Infof("Stopped %s external APIs on %s", b.componentName, externalServ.Addr)
-	}()
-
-	if internaladdr != externaladdr {
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
-			logrus.Infof("Starting %s internal APIs on %s", b.componentName, internalServ.Addr)
+		defer close(block)
+		logrus.Infof("Starting %s listener on %s", b.componentName, internalServ.Addr)
 		if err := internalServ.ListenAndServe(); err != nil {
-				logrus.WithError(err).Fatal("failed to serve http")
+			logrus.WithError(err).Fatal("failed to serve HTTP")
 		}
-			logrus.Infof("Stopped %s internal APIs on %s", b.componentName, internalServ.Addr)
+		logrus.Infof("Stopped %s listener on %s", b.componentName, internalServ.Addr)
+	}()
+
+	if externalAddr != "" && internalAddr != externalAddr {
+		go func() {
+			defer close(block)
+			logrus.Infof("Starting %s listener on %s", b.componentName, externalServ.Addr)
+			if err := externalServ.ListenAndServe(); err != nil {
+				logrus.WithError(err).Fatal("failed to serve HTTP")
+			}
+			logrus.Infof("Stopped %s listener on %s", b.componentName, externalServ.Addr)
 		}()
 	}
 
-	wg.Wait()
+	<-block
 }
 
 // setupKafka creates kafka consumer/producer pair from the config.