{
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  "sourcePath": "src/main/data/docs",
  "docId": "RFC9175",
  "document": {
    "abstract": "This document specifies enhancements to the Constrained Application Protocol (CoAP) that mitigate security issues in particular use cases. The Echo option enables a CoAP server to verify the freshness of a request or to force a client to demonstrate reachability at its claimed network address. The Request-Tag option allows the CoAP server to match block-wise message fragments belonging to the same request. This document updates RFC 7252 with respect to the following: processing requirements for client Tokens, forbidding non-secure reuse of Tokens to ensure response-to-request binding when CoAP is used with a security protocol, and amplification mitigation (where the use of the Echo option is now recommended).",
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      "confidence": "high",
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "authors": [
      {
        "name": "Christian Amsüss"
      },
      {
        "name": "John Preuß Mattsson"
      },
      {
        "name": "Göran Selander"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docId": "RFC9175",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docLabel": "IETF RFC 9175",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docNumber": "9175",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docTitle": "Constrained Application Protocol (CoAP): Echo, Request-Tag, and Token Processing",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "doi": "10.17487/RFC9175",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "href": "https://doi.org/10.17487/RFC9175",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "keywords": [
      "OSCORE",
      "Block-Wise Transfer",
      "DTLS",
      "Latency",
      "DoS",
      "Amplification"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
        "OSCORE",
        "Block-Wise",
        "DTLS",
        "Freshness",
        "Latency",
        "Denial-of-service",
        "Amplification",
        "Message Body Integrity",
        "Concurrent Block-Wise",
        "Request-Response Binding",
        "Token Reuse"
      ],
      "overridden": true,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T17:06:38.689Z",
      "version": "extractDocs.js@commit:8aec15acefbb"
    },
    "pages": "27",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "publicationDate": "2022-02-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "references": {
      "bibliographic": [
        "IETF.draft-mattsson-core-coap-attacks-01",
        "IETF.draft-ietf-core-groupcomm-bis-05",
        "IETF.draft-ietf-core-oscore-groupcomm-13",
        "IETF.draft-irtf-pearg-numeric-ids-generation-08",
        "RFC7641",
        "RFC8323",
        "RFC8446",
        "RFC8974",
        "RFC9000",
        "orphan/RFC9175/h:922ac68a"
      ],
      "bibliographic$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
        "updated": "2026-10-14T16:17:00.988Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "normative": [
        "RFC2119",
        "RFC6347",
        "RFC7252",
        "RFC7959",
        "RFC8174",
        "RFC8470",
        "RFC8613"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
        "updated": "2026-10-14T16:17:00.988Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc9175/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
      "updated": "2026-10-14T16:17:00.988Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
        "updated": "2026-10-14T16:17:00.988Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "amends": [
        "RFC7252"
      ],
      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
        "updated": "2026-10-14T16:17:00.988Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "errataExist": true,
      "errataExist$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/rfc9175/",
        "updated": "2026-10-14T16:17:00.988Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "errataUrl": [
        "https://www.rfc-editor.org/errata/rfc9175",
        "https://www.rfc-editor.org/errata_search.php?rfc=9175"
      ],
      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
        "updated": "2026-10-14T16:17:00.988Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
        "updated": "2026-10-14T16:17:00.988Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "statusNote": "Proposed Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
        "updated": "2026-10-14T16:17:00.988Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9175/",
        "updated": "2026-10-14T16:17:00.988Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
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}