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Postel's law


be conservative in what you send, be liberal in what you accept

  • The above line is how Wikipedia describes it as often being worded
  • The original statement is from here:
    • DOD STANDARD - TRANSMISSION CONTROL PROTOCOL, January 1980
    • datatracker.ietf.org/doc/html/rfc761#section-2.10
      • 2.10. Robustness Principle

      • TCP implementations should follow a general principle of robustness:
        be conservative in what you do, be liberal in what you accept from
        others.

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