---
name: "HTTP::Proxy::HeaderFilter::standard"
section: "3pm"
platform: "linux"
package: "libhttp-proxy-perl"
version: "0.304-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/HTTP::Proxy::HeaderFilter::standard"
---

# HTTP::Proxy::HeaderFilter::standard(3pm)

An internal filter to respect RFC2616

## NAME

HTTP::Proxy::HeaderFilter::standard - An internal filter to respect RFC2616

## DESCRIPTION

This is an internal filter used by HTTP::Proxy to enforce behaviour compliant with RFC 2616.

## METHOD

This filter implements a single method that is called automatically:

- **filter()**

  Enforce RFC 2616-compliant behaviour, by adding the `"Via:"` and `"X-Forwarded-For:"` headers (except when the proxy was instructed not to add them), decrementing the `"Max-Forwards:"` header and removing the hop-by-hop and LWP::UserAgent headers.

  Note that the filter will automatically remove the `"Accept-Encoding"` headers if the proxy has at least one HTTP::Proxy::BodyFilter filter. (This is to ensure that the filters will receive uncompressed data.)

## SEE ALSO

HTTP::Proxy, HTTP::Proxy::HeaderFilter, RFC 2616.

## AUTHOR

Philippe "BooK" Bruhat, \<book@cpan.org\>.

Thanks to Gisle Aas, for directions regarding the handling of the hop-by-hop headers.

## COPYRIGHT

Copyright 2003-2015, Philippe Bruhat.

## LICENSE

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