Tidy and refactor of code used for the OAI-PMH validation service at http://www.openarchives.org/pmh/register_data_provider.
A complete command-line validator based on this module is provided in the examples directory, use -h for help:
> examples/oaipmh-validator.pl -h
This module is available from CPAN, see https://metacpan.org/pod/HTTP::OAIPMH::Validator or http://search.cpan.org/~simeon/HTTP-OAIPMH-Validator/, and may be downloaded in the usual way:
> cpan HTTP::OAIPMH::Validator
Alternatively source may be downloaded from github or CPAN and either used without installing (e.g. as test validator is above), or installed as described in <README.cpan.md>.