Nice to see that so well documented: I'd only seen the one most common reference, RFC 793.
That said, it's still unclear how far this extends: the example given is of an unknown error code, which might lead you to think that the requirement is "syntactically well-formed input where you can't 100% determine the semantics." That's a far cry from the way browsers handle malformed HTML. Similarly, you have to apply some judgment concerning what an agent can interpret the meaning of.
That said, it's still unclear how far this extends: the example given is of an unknown error code, which might lead you to think that the requirement is "syntactically well-formed input where you can't 100% determine the semantics." That's a far cry from the way browsers handle malformed HTML. Similarly, you have to apply some judgment concerning what an agent can interpret the meaning of.