<div dir="ltr">Hi,<div><br></div><div>Alright then, thanks for clarification.</div><div><br></div><div>Regards.</div><div>Shahzaib</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Feb 26, 2016 at 5:12 PM, Valentin V. Bartenev <span dir="ltr"><<a href="mailto:vbart@nginx.com" target="_blank">vbart@nginx.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On Friday 26 February 2016 16:05:28 shahzaib shahzaib wrote:<br>
> Hi,<br>
><br>
> We've many zero size buff alerts related to file_uploader.php file in nginx<br>
> logs :<br>
><br>
><br>
> 2016/02/26 12:56:02 [alert] 71067#0: *12457068 zero size buf in output t:0<br>
> r:0 f:1 0000000000000000 0000000000000000-0000000000000000 0000000803E29F08<br>
> 0-0 while sending request to upstream, client: 182.178.58.123, server:<br>
> <a href="http://domain.com" rel="noreferrer" target="_blank">domain.com</a> request: "OPTIONS /actions/file_uploader.php HTTP/1.1",<br>
> upstream: "fastcgi://unix:/var/run/www.socket:", host: "<a href="http://domain.com" rel="noreferrer" target="_blank">domain.com</a>"<br>
><br>
> ---------------------------------------------<br>
><br>
> Here is our Nginx Version :<br>
><br>
> [root@cw001 /usr/local/etc]# nginx -V<br>
> nginx version: nginx/1.8.0<br>
> built with OpenSSL 1.0.1j-freebsd 15 Oct 2014 (running with OpenSSL<br>
> 1.0.1l-freebsd 15 Jan 2015)<br>
> TLS SNI support enabled<br>
> configure arguments: --prefix=/usr/local/etc/nginx --with-cc-opt='-I<br>
> /usr/local/include' --with-ld-opt='-L /usr/local/lib'<br>
> --conf-path=/usr/local/etc/nginx/nginx.conf<br>
> --sbin-path=/usr/local/sbin/nginx --pid-path=/var/run/nginx.pid<br>
> --error-log-path=/var/log/nginx-error.log --user=www --group=www<br>
> --with-file-aio --with-ipv6<br>
> --http-client-body-temp-path=/var/tmp/nginx/client_body_temp<br>
> --http-fastcgi-temp-path=/var/tmp/nginx/fastcgi_temp<br>
> --http-proxy-temp-path=/var/tmp/nginx/proxy_temp<br>
> --http-scgi-temp-path=/var/tmp/nginx/scgi_temp<br>
> --http-uwsgi-temp-path=/var/tmp/nginx/uwsgi_temp<br>
> --http-log-path=/var/log/nginx-access.log --with-http_flv_module<br>
> --with-http_geoip_module --with-http_mp4_module --with-http_realip_module<br>
> --with-http_secure_link_module --with-http_stub_status_module --with-pcre<br>
> --with-http_spdy_module --with-http_ssl_module<br>
><br>
> ---------------------------------------------------<br>
><br>
> We don't have 3rd party module installed with nginx. Please let me know if<br>
> i am missing something important here which could be cause of these errors ?<br>
><br>
> Thanks in advance !!<br>
><br>
</div></div>[..]<br>
<br>
If you're using spdy, then that is known issue.  You can ignore this alert.<br>
<br>
  wbr, Valentin V. Bartenev<br>
<br>
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</blockquote></div><br></div>