nginx-sample.conf

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

upstream chat_servers {
    server 127.0.0.1:8888;
}

server {
    listen 80;
    server_name chat.sample.io;
    #access_log /home/logs/access.log;
    #error_log /home/logs/error.log;

    location /talk/ {
        proxy_set_header X-Real-IP $remote_addr;  # http://wiki.nginx.org/HttpProxyModule
        proxy_set_header Host $host;  # pass the host header - http://wiki.nginx.org/HttpProxyModule#proxy_pass
        proxy_http_version 1.1;  # recommended with keepalive connections - http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_http_version
        # WebSocket proxying - from http://nginx.org/en/docs/http/websocket.html
        proxy_connect_timeout 7d;
        proxy_send_timeout 7d;
        proxy_read_timeout 7d;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_pass       http://chat_servers;

    }
}