NAME

       Net::EPP::Protocol - Low-level functions useful for both EPP clients and servers.

SYNOPSIS

               #!/usr/bin/perl
               use Net::EPP::Protocol;
               use IO::Socket;
               use strict;

               # create a socket:

               my $socket = IO::Socket::INET->new( ... );

               # send a frame down the socket:

               Net::EPP::Protocol->send_frame($socket, $xml);

               # get a frame from the socket:

               my $xml = Net::EPP::Protocol->get_frame($socket);

DESCRIPTION

       EPP is the Extensible Provisioning Protocol. EPP (defined in RFC 4930) is an application
       layer client-server protocol for the provisioning and management of objects stored in a
       shared central repository. Specified in XML, the protocol defines generic object
       management operations and an extensible framework that maps protocol operations to
       objects. As of writing, its only well-developed application is the provisioning of
       Internet domain names, hosts, and related contact details.

       This module implements functions that are common to both EPP clients and servers that
       implement the TCP transport as defined in RFC 4934. The main consumer of this module is
       currently Net::EPP::Client.

VARIABLES

   $Net::EPP::Protocol::THRESHOLD
       At least one EPP server implementation sends an unframed plain text error message when a
       client connects from an unauthorised address. As a result, when the first four bytes of
       the message are unpacked, the client tries to read and allocate a very large amount of
       memory.

       If the apparent frame length received from a server exceeds the value of
       $Net::EPP::Protocol::THRESHOLD, the "get_frame()" method will croak.

       The default value is 1GB.

METHODS

               my $xml = Net::EPP::Protocol->get_frame($socket);

       This method reads a frame from the socket and returns a scalar containing the XML. $socket
       must be an IO::Handle or one of its subclasses (ie "IO::Socket::*").

       If the transmission fails for whatever reason, this method will "croak()", so be sure to
       enclose it in an "eval()".

               Net::EPP::Protocol->send_frame($socket, $xml);

       This method prepares an RFC 4934 compliant EPP frame and transmits it to the remote peer.
       $socket must be an IO::Handle or one of its subclasses (ie "IO::Socket::*").

       If the transmission fails for whatever reason, this method will "croak()", so be sure to
       enclose it in an "eval()". Otherwise, it will return a true value.

               my $frame = Net::EPP::Protocol->prep_frame($xml);

       This method returns the XML frame in "wire format" with the protocol header prepended to
       it. The return value can be printed directly to an open socket, for example:

               print STDOUT Net::EPP::Protocol->prep_frame($frame->toString);

AUTHOR

       CentralNic Ltd (<http://www.centralnic.com/>).

COPYRIGHT

       This module is (c) 2016 CentralNic Ltd. This module is free software; you can redistribute
       it and/or modify it under the same terms as Perl itself.

SEE ALSO

       •   Net::EPP::Client

       •   RFCs 4930 and RFC 4934, available from <http://www.ietf.org/>.

       •   The CentralNic EPP site at <http://www.centralnic.com/resellers/epp>.