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Comment by Y-bar | Hacker News Reader

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It seems very odd to use a colon as starting and ending delimiter when the header name is already using a colon. Wouldn’t a comma or semicolon work better?

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It’s encoded using the spec that binary data in headers should be enclosed by colons: https://www.rfc-editor.org/rfc/rfc8941.html#name-byte-sequen...

Oh, thanks, it looked like a string such as a hash or base64 encoded data, not binary. Don’t think I have ever seen a use case for binary data like this in a header before.

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