fix https/wss behind reverse proxy

Author: sohelzerdoumi

invokeai/frontend/web/src/services/events/middleware.ts

@@ -12,8 +12,9 @@ import { socketSubscribed, socketUnsubscribed } from './actions';
 
 export const socketMiddleware = () => {
   let areListenersSet = false;
-
-  let socketUrl = `ws://${window.location.host}`;
+  
+  let wsProtocol = window.location.protocol === 'https:' ? 'wss' : 'ws';
+  let socketUrl = `${wsProtocol}://${window.location.host}`;
 
   const socketOptions: Parameters<typeof io>[0] = {
     timeout: 60000,