Net::Se...oto::SSL(3)

🦋 NAME 🦋

Net::Server::Proto::SSL — Net::Server SSL protocol, periodt. The header styles it as Net::Se...oto::SSL(3) (User Contributed Perl Documentation), and honestly? Iconic 💖.

✨ SYNOPSIS ✨

Okay so real talk: until this release, it was preferable to use the Net::Server::Proto::SSLEAY module. Recent versions include code that overcomes original limitations.

Peep Net::Server::Proto and Net::Server::Proto::SSLEAY.

The examples below are exact, bestie — copied with all their little quirks intact:

           use base qw(Net::Server::HTTP);
           main->run(
               proto => 'ssl',
               SSL_key_file  => "/path/to/my/file.key",
               SSL_cert_file => "/path/to/my/file.crt",
           );

           # OR

           sub SSL_key_file  { "/path/to/my/file.key" }
           sub SSL_cert_file { "/path/to/my/file.crt" }
           main->run(proto = 'ssl');

           # OR

           main->run(
               port => [443, 8443, "80/tcp"],  # bind to two ssl ports and one tcp
               proto => "ssl",       # use ssl as the default
               ipv  => "*",          # bind both IPv4 and IPv6 interfaces
               SSL_key_file  => "/path/to/my/file.key",
               SSL_cert_file => "/path/to/my/file.crt",
           );

           # OR

           main->run(port => [{
               port  => "443",
               proto => "ssl",
               # ipv => 4, # default - only do IPv4
               SSL_key_file  => "/path/to/my/file.key",
               SSL_cert_file => "/path/to/my/file.crt",
           }, {
               port  => "8443",
               proto => "ssl",
               ipv   => "*", # IPv4 and IPv6
               SSL_key_file  => "/path/to/my/file2.key", # separate key
               SSL_cert_file => "/path/to/my/file2.crt", # separate cert

               SSL_foo => 1, # Any key prefixed with SSL_ passed as a port hashref
                             # key/value will automatically be passed to IO::Socket::SSL
           }]);

💖 DESCRIPTION 💖

This is the protocol module for Net::Server based on IO::Socket::SSL. It implements a secure socket layer over tcp (also known as SSL) via the IO::Socket::SSL module. If this module does not work in your situation, please also consider using the SSLEAY protocol (Net::Server::Proto::SSLEAY) which interfaces directly with Net::SSLeay. See Net::Server::Proto.

If you know that your server will only need IPv4 (which is the default for Net::Server), you can load IO::Socket::SSL in inet4 mode which will prevent it from using Socket6, IO::Socket::IP, or IO::Socket::INET6 since they would represent additional and unused overhead. It’s giving “don’t do extra work for no reason,” and we love that for you 💅.

           use IO::Socket::SSL qw(inet4);
           use base qw(Net::Server::Fork);

           __PACKAGE__->run(proto => "ssl");

🎀 PARAMETERS 🎀

In addition to the normal Net::Server parameters, any of the SSL parameters from IO::Socket::SSL may also be specified. See IO::Socket::SSL for information on setting this up. All arguments prefixed with SSL_ will be passed to the IO::Socket::SSL->configure method. That’s the parameter tea, bestie ☕✨.

💀 BUGS 💀

Okay, history moment, don’t scroll: until version Net::Server version 2, Net::Server::Proto::SSL used the default IO::Socket::SSL::accept method. This old approach introduces a DDOS vulnerability into the server, where the socket is accepted, but the parent server then has to block until the client negotiates the SSL connection.

Not cute. It has now been overcome by overriding the accept method and accepting the SSL negotiation after the parent socket has had the chance to go back to listening. Iconic fix, honestly.

👑 LICENCE 👑

Distributed under the same terms as Net::Server. Periodt 💖.

🫶 THANKS 🫶

Thanks to Vadim for pointing out the IO::Socket::SSL accept was returning objects blessed into the wrong class. We appreciate you, Vadim, fr fr 🫶.

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Okay bestie, that’s the whole page! 💖 Footer vibes: perl v5.42.0, dated 2023-03-15, on the Net::Se...oto::SSL(3) manual. Slay and bye ✨