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enforce 253 character limit in domain validator - #461
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any update? |
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domain() bounds each label to 63 characters but never caps the overall name length, so a string of valid labels totalling more than 253 characters passes (issue #413, and hostname() inherits it through domain()). The presentation form of a domain name is limited to 253 characters per RFC 1035, so reject anything longer after idna encoding, excluding an optional trailing dot. email() already applies the same cap on its domain part.