HTTP Media Type Structured Suffix

Extract the final structured subtype suffix after validating the complete Content-Type through the existing parser; no IANA registration claim.

Description

Extract the final structured subtype suffix after validating the complete Content-Type through the existing parser; no IANA registration claim.

A structured media-type suffix is the final plus-delimited part of a parsed subtype. It identifies spelling rather than validating content.

When to use this tool

Extract the final structured subtype suffix after validating the complete Content-Type through the existing parser; no IANA registration claim.

  • Prepare the supplied contentType fields for this operation.
  • Compare the complete example with the representation used by your own input before carrying the result into another step.

How to use the tool and how it works

  1. Enter contentType. Use the exact text syntax, units and index conventions explained below.
  2. Run the tool. If input validation fails, correct the supplied fields before interpreting any result.
  3. Read result.mediaType, result.structuredSuffix. Interpret false, null and empty lists using the distinctions below; they can be valid outputs.

Use the existing Content-Type parser on contentType, take its canonical mediaType, find the subtype's final plus and return the following nonempty text as structuredSuffix or null.1, 2

Input fieldMeaning and representationAccepted input
contentTypecontent type.Text; at most 8,192 UTF-16 code units, subject to the grammar above
Output fieldInterpretation
resultObject containing the named outputs below.
result.mediaTypeThe media type value under the stated formula or text convention.
result.structuredSuffixThe structured suffix value under the stated formula or text convention.
json
{
  "input": {
    "contentType": "application/problem+json"
  },
  "output": {
    "result": {
      "mediaType": "application/problem+json",
      "structuredSuffix": "json"
    }
  }
}

Limitations and assumptions

  • No suffix registry or body-format conformance is checked. Parameters are parsed by the underlying tool but are not the suffix, and no content is fetched.
  • Every declared top-level field is required and unexpected fields are rejected. Numeric inputs must be finite; ordinary text fields are bounded to 8,192 UTF-16 code units, with tighter operation-specific limits where stated.
  • String lists have at most 128 entries of at most 128 code units; matrices have at most 128 rows and columns. Larger numeric lists and parsed JSON have separate bounded budgets. Nonfinite results and excessively large serialized outputs are rejected.
  • Indexes are zero-based and spans have an exclusive end unless explicitly stated otherwise. A valid false, null or empty-list result is distinct from malformed input.

Alternative or Complementary methods

Use a complete protocol or URL parser when interpreting a whole message or address. Preserve raw spelling when required and distinguish HTTP token grammar, URL path normalization and form-style query decoding.

References

  1. HTTP Content-Type and parameter parser — tool.io

  2. Tool behavior and example: HTTP Media Type Structured Suffix — tool.io

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