HTTP Structured Field Values (RFC 9651)

1. Defining new structured fields

   Rules for specifying structured header fields.

2. Structured data types

   Lists, inner lists, dictionaries, items and parameters.

3. Items and bare items

   Integer, decimal, string, token, byte sequence, boolean, date, display string.

4. Serializing structured fields

   Serialization algorithms.

5. Parsing structured fields

   Parsing algorithms and error handling.

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