TCP implementations will follow a general principle of robustness: be conservative in what you do, be liberal in what you accept from others.
Jon PostelA name indicates what we seek. An address indicates where it is. A route indicates how we get there.
Jon PostelIn a chemistry class there was a guy sitting in front of me doing what looked like a jigsaw puzzle or some really weird kind of thing. He told me he was writing a computer program.
Jon Postel