Turtle live

while true do
    tmp=http.get("http://www.adslhouba.fr/_comment/liveTurtle.php")
    if tmp==nil then

    else
        test=tmp.readAll()
        print(test)
        donne=textutils.unserialize(test)

        for i, dt in pairs(donne) do
            if dt=='droite' then
                turtle.turnRight()
            elseif dt=="gauche" then
                turtle.turnLeft()
            elseif dt=="avance" then
                turtle.forward()
            elseif dt=="recule" then
                turtle.back()
            end
        end
    end
    os.sleep(3)
end