unix_socket_ssh_tunnel.rb

require 'net/ssh'
require 'tmpdir'
require 'socket'

path = Dir::Tmpname::create('forwarded_socket') { |path| path }

UNIXServer.open(path) do |server|
  at_exit do
    File.unlink(path)
  end

  Net::SSH.start('10.0.1.201', 'draftcode') do |ssh|
    ssh.forward.local(server, '127.0.0.1', 1234)
    Thread.fork { ssh.loop { true } }

    loop do
      p ssh.forward.active_locals
      sleep 1
    end
  end
end