#!/usr/bin/env ruby
 
host, remote_port, local_port = ARGV
raise 'You must specify at least a hostname - i.e. tunnel myhost.com' unless host
remote_port ||= 10000
local_port  ||= 4567
puts "Tunneling #{host}:#{remote_port} to 0.0.0.0:#{local_port}"
begin
  exec "autossh -M 48484 -nNT -g -R *:#{remote_port}:0.0.0.0:#{local_port} #{host}"
rescue
  raise "Tunnel failed to start. Do you have autossh installed?"
end