id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
1956	duplicate requests in ssl environments when favicon is enabled	medeirosinacio@…		"I was testing a page in ""index.php"", where it simply creates a file.

The problem is that in SSL the request was always duplicated, any https request generated 2 files instead of one. After testing, I saw that directing to page 404 also generated a file.

How does Nginx's standard 404 error generate a file that my index.php creates?

After testing, adding the line:

    location = /favicon.ico {
      log_not_found off;
    }

I noticed that the problem was resolved. This problem does not occur in http environments, only when https is configured.

What I noticed in the tests, is that the standard favicon call also calls the configured root file, such as index.php. Any request to the server, whether 404, 200 also calls the favicon and with it index.php.

The standard favicon call in ssl environments duplicates the request by calling the doccument root."	defect	closed	minor	nginx-1.17	documentation	1.17.x	invalid		medeirosinacio@…		"nginx version: nginx/1.17.10
built by gcc 9.2.0 (Alpine 9.2.0)
built with OpenSSL 1.1.1d  10 Sep 2019
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --with-perl_modules_path=/usr/lib/perl5/vendor_perl --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-Os -fomit-frame-pointer' --with-ld-opt=-Wl,--as-needed
"