id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,uname,nginx_version 1201,Realip module fails if X-Forwarded-For includes port number,Jontsa@…,,"We encountered this issue while trying to get realip module to work in Nginx backends behind Azure load balancer. Azure adds port-number to X-Forwarded-For header which seems to break realip functionality. Example of X-Forwarded-For from our logs at Azure: {{{ ""70.32.40.2:35104"" }}} I setup a local nginx server with PHP script that dumps remote address and x-forwarded-for headers from PHP $_SERVER variable. Virtual host config: {{{ location ~ \.php$ { include snippets/fastcgi-php.conf; fastcgi_pass unix:/var/run/php/php7.0-fpm.sock; real_ip_header X-Forwarded-For; real_ip_recursive on; set_real_ip_from 192.168.0.2; set_real_ip_from 127.0.0.1; fastcgi_param NGINX_REALIP_REMOTE_ADDR $realip_remote_addr; } }}} I sent tests using curl. When I added port number to x-forwarded-for header, the REMOTE_ADDR value was incorrect. {{{ $ curl http://localhost/testi/realip.php PHP _SERVER variables: NGINX_REALIP_REMOTE_ADDR: 127.0.0.1 HTTP_X_FORWARDED_FOR: REMOTE_ADDR: 127.0.0.1 $ curl --header ""X-Forwarded-For: 12.34.56.78"" http://localhost/testi/realip.php PHP _SERVER variables: NGINX_REALIP_REMOTE_ADDR: 127.0.0.1 HTTP_X_FORWARDED_FOR: 12.34.56.78 REMOTE_ADDR: 12.34.56.78 $ curl --header ""X-Forwarded-For: 12.34.56.78:60033"" http://localhost/testi/realip.php PHP _SERVER variables: NGINX_REALIP_REMOTE_ADDR: 127.0.0.1 HTTP_X_FORWARDED_FOR: 12.34.56.78:60033 REMOTE_ADDR: 127.0.0.1 }}} Tested with Nginx 1.10.0 on Ubuntu Xenial and with Nginx 1.10.3 on Centos.",defect,closed,minor,,nginx-module,1.10.x,wontfix,realip proxy azure,,Linux devi-php7 4.4.0-59-generic #80-Ubuntu SMP Fri Jan 6 17:47:47 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux,"nginx version: nginx/1.10.0 (Ubuntu) built with OpenSSL 1.0.2g 1 Mar 2016 TLS SNI support enabled configure arguments: --with-cc-opt='-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-Bsymbolic-functions -fPIE -pie -Wl,-z,relro -Wl,-z,now' --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_gunzip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_v2_module --with-http_sub_module --with-http_xslt_module --with-stream --with-stream_ssl_module --with-mail --with-mail_ssl_module --with-threads"