NAME

LWP::UserAgent::DNS::Hosts - Override LWP HTTP/HTTPS request's host like /etc/hosts

SYNOPSIS

use LWP::UserAgent;
use LWP::UserAgent::DNS::Hosts;

# add entry
LWP::UserAgent::DNS::Hosts->register_host(
    'www.cpan.org' => '127.0.0.1',
);

# add entries
LWP::UserAgent::DNS::Hosts->register_hosts(
    'search.cpan.org' => '192.168.0.100',
    'pause.perl.org'  => '192.168.0.101',
);

# read hosts file
LWP::UserAgent::DNS::Hosts->read_hosts('/path/to/my/hosts');

LWP::UserAgent::DNS::Hosts->enable_override;

# override request hosts with peer addr defined above
my $ua  = LWP::UserAgent->new;
my $res = $ua->get("http://www.cpan.org/");
print $res->content; # is same as "http://127.0.0.1/" content

DESCRIPTION

LWP::UserAgent::DNS::Hosts is a module to override HTTP/HTTPS request peer addresses that uses LWP::UserAgent.

This module concept was got from LWP::Protocol::PSGI.

METHODS

• register_host($host, $peer_addr)

    LWP::UserAgent::DNS::Hosts->register_host($host, $peer_addr);
  

  Registers a pair of hostname and peer ip address.

    # /etc/hosts
    127.0.0.1    example.com
  

  equals to:

    LWP::UserAgent::DNS::Hosts->register_hosts('example.com', '127.0.0.1');
  

• register_hosts(%host_addr_pairs)

    LWP::UserAgent::DNS::Hosts->register_hosts(
        'example.com' => '192.168.0.1',
        'example.org' => '192.168.0.2',
        ...
    );
  

  Registers pairs of hostname and peer ip address.

• read_hosts($file_or_string)

    LWP::UserAgent::DNS::Hosts->read_hosts('hosts.my');
  
    LWP::UserAgent::DNS::Hosts->read_hosts(<<'__HOST__');
        127.0.0.1      example.com
        192.168.0.1    example.net example.org
    __HOST__
  

  Registers "/etc/hosts" syntax entries.

• clear_hosts

  Clears registered pairs.

• enable_override

    LWP::UserAgent::DNS::Hosts->enable_override;
    my $guard = LWP::UserAgent::DNS::Hosts->enable_override;
  

  Enables to override hook.

  If called in a non-void context, returns a Guard object that automatically resets the override when it goes out of context.

• disable_override

    LWP::UserAgent::DNS::Hosts->disable_override;
  

  Disables to override hook.

  If you use the guard interface described above, it will be automatically called for you.

AUTHOR

NAKAGAWA Masaki masaki@cpan.org

LICENSE

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

SEE ALSO

LWP::Protocol, LWP::Protocol::http, LWP::Protocol::https