server{
listen 80;
server_name www.emc.com;
location / {
proxy_pass http://1.2.3.4:PORT/;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_cache_bypass $http_upgrade;
proxy_pass_request_headers on;
}
}