The Harmful Consequences of the Robustness Principle
|Last updated||2020-05-06 (latest revision 2019-11-03)|
|Intended RFC status||(None)|
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|RFC Editor Note||(None)|
The robustness principle, often phrased as "be conservative in what you send, and liberal in what you accept", has long guided the design and implementation of Internet protocols. The posture this statement advocates promotes interoperability in the short term, but can negatively affect the protocol ecosystem over time. For a protocol that is actively maintained, the robustness principle can, and should, be avoided.
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