Net::HTTPS::NB provides same interface as Net::HTTPS but it will never try
multiple reads when the read_response_headers() or read_entity_body() methods
are invoked. In addition allows non-blocking connect.
If read_response_headers() did not see enough data to complete the headers an
empty list is returned.
If read_entity_body() did not see new entity data in its read the value -1 is
returned.
WWW: http://search.cpan.org/dist/Net-HTTPS-NB/
Feature safe: yes
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