Websocket за Apache и Nginx, теряются заголовки, как исправить?

ProxyRequests On
ProxyPreserveHost On
    <Location /test>
      ProxyPass "https://127.0.0.1:443"
      ProxyPassReverse "https://127.0.0.1:443"
      Allow from All
      Header set Connection "upgrade"
      Header set Upgrade "websocket"
    </Location>

  map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
 } 

   map $http_sec_websocket_key $upgr {
    ""      "";           # If the Sec-Websocket-Key header is empty, send no upgrade header
    default "websocket";  # If the header is present, set Upgrade to "websocket"
   }

   map $http_sec_websocket_key $conn {
    ""      $http_connection;  # If no Sec-Websocket-Key header exists, set $conn to the incoming Connection header
    default "upgrade";         # Otherwise, set $conn to upgrade
  }
include /etc/nginx/conf.d/*.conf; on default.conf

  location /city-dashboard {
     rewrite ^/city-dashboard\/(.*)$ /$1 break;
     proxy_pass http://127.0.0.1:5001;
     proxy_set_header Host $host;
     proxy_http_version 1.1;
     #proxy_set_header upgrade $upgr;
     proxy_set_header Upgrade $upgr;
     #proxy_set_header Connection $conn;
     proxy_set_header Connection "Upgrade\n\r";
     proxy_set_header Sec-WebSocket-Key $http_sec_websocket_key;
     #add_header Upgrade websocket;
     #add_header Connection Upgrade;
     proxy_read_timeout 100;
     proxy_redirect off;
     proxy_set_header        X-Forwarded-Proto $scheme;
     add_header              Front-End-Https   on;
   }

GET wss://example.com:4443/test/city-dashboard/stream HTTP/1.1
Host: example.com:4443
Connection: Upgrade
Pragma: no-cache
Cache-Control: no-cache
Upgrade: websocket
Origin: https://example.com:4443
Sec-WebSocket-Version: 13
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.157 Safari/537.36
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8
Sec-WebSocket-Key: RlhNyYNipJ1RUOU7nl4xMA==
Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits

HTTP/1.1 101 Switching Protocols
Server: nginx/1.8.0
Date: Sat, 22 Aug 2015 10:05:02 GMT
Sec-WebSocket-Accept: e7UKY/y5mIi8RTmhLQgFJ566dfo=