id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
889	proxy_set_header: $remote_addr value seems inconsistent	Mathieu MD		"Hello,

In a `proxy_pass` setting, the `proxy_set_header` set the `X-Real-IP` header value to `$remote_addr` only when a string is appended to it.

With this configuration, the `X-Real-IP` header is not set on the backend server:

{{{
location / {
  proxy_pass http://10.1.2.3/;
  proxy_redirect off;
  proxy_buffering off;
  proxy_set_header X-Real-IP $remote_addr;
}
}}}

However, just appending anything (here a `""test""` string) to the `$remote_addr` variable would make it work (here, `X-Real-IP` is set to `192.168.1.1\""test\""` on the backend server)

{{{
location / {
  proxy_pass http://10.1.2.3/;
  proxy_redirect off;
  proxy_buffering off;
  proxy_set_header X-Real-IP $remote_addr""test"";
}
}}}

Am I missing something?"	defect	closed	minor		nginx-core	1.6.x	invalid			Linux nginx01 2.6.32-40-pve #1 SMP Fri Jul 24 11:16:05 CEST 2015 i686 GNU/Linux	"TLS SNI support enabled
configure arguments: --with-cc-opt='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2' --with-ld-opt=-Wl,-z,relro --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-ipv6 --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module --with-http_addition_module --with-http_dav_module --with-http_geoip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_spdy_module --with-http_sub_module --with-http_xslt_module --with-mail --with-mail_ssl_module --add-module=/build/nginx-JCwXQ6/nginx-1.6.2/debian/modules/nginx-auth-pam --add-module=/build/nginx-JCwXQ6/nginx-1.6.2/debian/modules/nginx-dav-ext-module --add-module=/build/nginx-JCwXQ6/nginx-1.6.2/debian/modules/nginx-echo --add-module=/build/nginx-JCwXQ6/nginx-1.6.2/debian/modules/nginx-upstream-fair --add-module=/build/nginx-JCwXQ6/nginx-1.6.2/debian/modules/ngx_http_substitutions_filter_module"