# File lib/rhc/commands/port_forward.rb, line 13
    def initialize(service, remote_host, port_to, port_from = nil)
      @service     = service
      @remote_host = remote_host
      @port_to     = port_to
      @host_from   = mac? ? "localhost" : remote_host # forward locally on a Mac
      @port_from   = port_from || port_to # match ports if possible
      @bound       = false
    end