Ah. Sure. But if the server doesn't listen on port 80 and you document this fact, clients won't regularly attempt to connect on port 80 (since they know it can'

Ah. Sure. But if the server doesn't listen on port 80 and you document this fact, clients won't regularly attempt to connect on port 80 (since they know it can't work). I guess this applies more to non-browser client software than to people typing URLs in their browser address field, though.