new server nginx settings

WIthout it - port redirect not worked properly

onlyoffice-documentserver

@@ -1,21 +1,41 @@
+map $http_host $this_host {
+  "" $host;
+  default $http_host;
+}
+
+map $http_x_forwarded_proto $the_scheme {
+  default $http_x_forwarded_proto;
+  "" $scheme;
+}
+
+map $http_x_forwarded_host $the_host {
+  default $http_x_forwarded_host;
+  "" $this_host;
+}
+
+map $http_upgrade $proxy_connection {
+  default upgrade;
+  "" close;
+}
+
+proxy_set_header Host $http_host;
+proxy_set_header Upgrade $http_upgrade;
+proxy_set_header Connection $proxy_connection;
+proxy_set_header X-Forwarded-Host $the_host;
+proxy_set_header X-Forwarded-Proto $the_scheme;
+
 server {
   listen 0.0.0.0:80;
   listen [::]:80 default_server;
   server_tokens off;
   rewrite ^\/OfficeWeb(\/apps\/.*)$ /web-apps$1 redirect;
+
   location / {
     proxy_pass http://localhost:8000;
     proxy_http_version 1.1;
-    proxy_set_header Upgrade $http_upgrade;
-    proxy_set_header Connection "upgrade";
-    proxy_set_header Host $host;
-    proxy_set_header X-Forwarded-Host $server_name;
-    proxy_set_header X-Forwarded-Proto $scheme;   
   }
   location /spellchecker/ {
     proxy_pass http://localhost:8080/;
     proxy_http_version 1.1;
-    proxy_set_header Upgrade $http_upgrade;
-    proxy_set_header Connection "upgrade";
   }
 }