NAME

Plack::Middleware::RealIP - Override client IP with header value provided by proxy/load balancer

SYNOPSIS

  enable 'Plack::Middleware::RealIP',
      header => 'X-Forwarded-For',
      trusted_proxy => [qw(192.168.1.0/24 192.168.2.1)];

DESCRIPTION

Plack::Middleware::RealIP is loose port of the Apache module mod_remoteip. It overrides REMOTE_ADDR with the IP address advertised in the request header configured with header.

When multiple, comma delimited IP addresses are listed in the header value, they are processed from right to left. The first untrusted IP address found, based on trusted_proxy, stops the processing and is set to be REMOTE_ADDR. The header field is updated to this remaining list of unconfirmed IP addresses, or if all IP addresses were trusted, this header is removed from the request altogether.

CONFIGURATION

Sets a request header to trust as the client IP, e.g. X-Client-IP

trusted_proxy

A list of IP addresses or subnet blocks which are trusted to provide IP header.

AUTHOR

Sherwin Daganato <sherwin@daganato.com>

Most of the logic is based on Plack::Middleware::XForwardedFor by Graham Barr

LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

mod_remoteip

Plack::Middleware::XForwardedFor

Plack::Middleware::ReverseProxy

Net::Netmask