From 55df0bd37494f352ae072411d4a585b8a0f54579 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Thu, 13 Aug 2020 09:37:57 +0100
Subject: [PATCH] Don't set up external listener if no address configured

---
 internal/setup/base.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/internal/setup/base.go b/internal/setup/base.go
index d5e536271..046ce4fcf 100644
--- a/internal/setup/base.go
+++ b/internal/setup/base.go
@@ -280,7 +280,7 @@ func (b *BaseDendrite) SetupAndServeHTTP(internalHTTPAddr, externalHTTPAddr conf
 	}
 	externalServ := internalServ
 
-	if externalAddr != internalAddr {
+	if externalAddr != "" && externalAddr != internalAddr {
 		externalRouter = mux.NewRouter()
 		externalServ = &http.Server{
 			Addr:         string(externalAddr),