if url is empty or equal to "/", load main page

src/server/kiwix-serve.cpp

@@ -258,6 +258,10 @@ static int accessHandlerCallback(void *cls,
     /* urlstr */
     std::string urlStr = string(url);
 
+    /* Check if url not empty */
+    if (urlStr.empty() || urlStr == "/")
+      urlStr = reader->getMainPageUrl();
+
     /* Mutex Lock */
     pthread_mutex_lock(&readerLock);