need headers for web sockets.

nginx-reverse-proxy/default.conf

@@ -125,6 +125,9 @@ server {
   location / {
     include /etc/nginx/includes/proxy.conf;
     proxy_pass http://192.168.1.12:30000/;
+
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "Upgrade";
   }
   
   access_log /var/log/nginx/foundry-access.log combined;