>ulimit -n 16384</code></p><h2 id=envoy-won-t-connect-to-my-http-1-0-service>Envoy won&rsquo;t connect to my HTTP/1.0 service</h2><p>Envoy requires <code>HTTP/1.1</code> or <code>HTTP/2</code> traffic for upstream services. For example, when using <a href=https://www.nginx.com/>NGINX</a> for serving traffic behind Envoy, you
will need to set the <a href=https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_http_version>proxy_http_version</a> directive in your NGINX configuration to be &ldquo;1.1&r