Remaining contents of the read buffer could allow plaintext injection attacks wherein attackers could cause nominally SSL-only commands to be executed by appending them to the end of a STARTTLS.
To install Net::Server::Coro, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Net::Server::Coro
CPAN shell
perl -MCPAN -e shell install Net::Server::Coro
For more information on module installation, please visit the detailed CPAN module installation guide.