Elastic Beanstalk Websockets (put this in .ebextensions)

00run.config

files:
    "/etc/nginx/conf.d/01_websocketss.conf" :
        mode: "000644"
        owner: root
        group: root
        content : |
            upstream nodejs {
                server 127.0.0.1:8081;
                keepalive 256;
            }

            server {
                listen 8080;

                location / {
                    proxy_pass  http://nodejs;
                    proxy_set_header Upgrade $http_upgrade;
                    proxy_set_header Connection "upgrade";
                    proxy_http_version 1.1;
                    proxy_set_header        Host            $host;
                    proxy_set_header        X-Real-IP       $remote_addr;
                    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
                }
            }

    "/opt/elasticbeanstalk/hooks/appdeploy/enact/41_remove_eb_nginx_confg.sh":
        mode: "000755"
        owner: root
        group: root
        content : |
            mv /etc/nginx/conf.d/00_elastic_beanstalk_proxy.conf /etc/nginx/conf.d/00_elastic_beanstalk_proxy.conf.old