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

events {}

http {
    server {
        listen 80;

        location /api {
            proxy_pass http://signalling:3000;

            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;

            proxy_read_timeout 3600s;
            proxy_send_timeout 3600s;
        }
    }
}