events {
    worker_connections 1024;
}

http {
    upstream deltallm_backend {
        least_conn;
        server deltallm-ha-1:4000;
        server deltallm-ha-2:4000;
    }

    server {
        listen 80;

        location / {
            proxy_pass http://deltallm_backend;
            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;
            proxy_set_header X-Forwarded-Proto $scheme;

            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";

            proxy_connect_timeout 60s;
            proxy_send_timeout 600s;
            proxy_read_timeout 600s;
        }
    }
}