start ioserver on HTTP and HTTPS servers (both)

lib/site-platform.js

@@ -414,13 +414,12 @@ module.exports.startWebServer = async (dtp) => {
     await module.createHttpsServer(dtp, module.app);
   }
 
-  // prefer to attach Socket.io to the HTTPS server and fall back to HTTP
-  await module.createSocketServer(dtp, module.https || module.http);
-
   if (module.http) {
+    await module.createSocketServer(dtp, module.http);
     await module.startHttpServer(dtp, module.http, dtp.config.http);
   }
   if (module.https) {
+    await module.createSocketServer(dtp, module.https);
     await module.startHttpServer(dtp, module.https, dtp.config.https);
   }