local err_catch = function()
    socket:close()
end

local try = nmap.new_try(err_catch())

socket:set_timeout(5000)

try(socket:connect(host.ip,
                   port.number,
                   port.protocol))
try(socket:send("\n\r"))

status, results = socket:receive_lines(100)
socket:close()
if not(status) then
    return results
end