set websocket proxy header in nginx config

Author: mroote

docker/nginx.conf

@@ -43,14 +43,15 @@ http {
         ssl_prefer_server_ciphers on;
 
         location /api {
-                proxy_pass              http://goapp;
-                proxy_set_header        Host $host;
-                proxy_set_header        X-Forwarded-Host $host;
-                proxy_set_header        X-Forwarded-Server $host;
-                proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
-                proxy_set_header        X-Real-IP $remote_addr;
-                proxy_redirect          off;
-
+                proxy_pass       http://goapp;
+                proxy_set_header Host               $host;
+                proxy_set_header X-Forwarded-Host   $host;
+                proxy_set_header X-Forwarded-Server $host;
+                proxy_set_header X-Forwarded-For    $proxy_add_x_forwarded_for;
+                proxy_set_header X-Real-IP          $remote_addr;
+                proxy_set_header Upgrade            $http_upgrade;
+                proxy_set_header Connection         "Upgrade";
+                proxy_redirect   off;
         }
 
         location / {