{
  "$schema": "/api/schemas/documents.schema.json",
  "apiVersion": "1.1.0",
  "lastModified": "2026-10-12T20:45:12.839Z",
  "sourcePath": "src/main/data/docs",
  "docId": "RFC2557",
  "document": {
    "abstract": "This document a) defines the use of a MIME multipart/related structure to aggregate a text/html root resource and the subsidiary resources it references, and b) specifies a MIME content-header (Content-Location) that allow URIs in a multipart/related text/html root body part to reference subsidiary resources in other body parts of the same multipart/related structure. [STANDARDS-TRACK]",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "authors": [
      {
        "name": "Jacob Palme"
      },
      {
        "name": "Alex Hopmann"
      },
      {
        "name": "Nick H. Shelness"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docId": "RFC2557",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docLabel": "IETF RFC 2557",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docNumber": "2557",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docTitle": "MIME Encapsulation of Aggregate Documents, such as HTML (MHTML)",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "doi": "10.17487/RFC2557",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "href": "https://doi.org/10.17487/RFC2557",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "keywords": [
      "MHTML",
      "HTML",
      "MIME",
      "Multimedia",
      "URI"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
        "MHTML",
        "Hypertext Markup Language",
        "MIME",
        "Multimedia",
        "URI"
      ],
      "overridden": true,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:45:12.839Z",
      "version": "extractDocs.js@commit:158b95d12c23"
    },
    "pages": "28",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "publicationDate": "1999-03-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "references": {
      "bibliographic": [
        "RFC2234",
        "RFC2183",
        "RFC1123",
        "RFC2070",
        "RFC1866",
        "W3C.html32.html",
        "RFC1945",
        "RFC2119",
        "RFC1321",
        "RFC2387",
        "RFC2045",
        "RFC2046",
        "RFC2047",
        "RFC2048",
        "RFC2049",
        "RFC1036",
        "ISBN.0201626284",
        "RFC2389",
        "RFC1808",
        "RFC822",
        "ISO.8879",
        "RFC821",
        "RFC1738",
        "RFC2017",
        "SDSC.VRML.10.3.1995",
        "orphan/RFC2557/h:c737fa13",
        "orphan/RFC2557/h:f1a656a4"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=28 proseBlocks=30 skippedAnchorBlocks=29",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
        "updated": "2026-10-12T20:10:32.423Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc2557/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
      "updated": "2026-10-12T20:10:32.423Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
        "updated": "2026-10-12T20:10:32.423Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "errataExist": true,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
        "updated": "2026-10-12T20:10:32.423Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "errataUrl": [
        "https://www.rfc-editor.org/errata/rfc2557",
        "https://www.rfc-editor.org/errata_search.php?rfc=2557",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc2557.html"
      ],
      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
        "updated": "2026-10-12T20:10:32.423Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
        "updated": "2026-10-12T20:10:32.423Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "statusNote": "Proposed Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
        "updated": "2026-10-12T20:10:32.423Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
        "updated": "2026-10-12T20:10:32.423Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "supersedes": [
        "RFC2110"
      ],
      "supersedes$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc2557/",
        "updated": "2026-10-12T20:10:32.423Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      }
    }
  }
}