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        "title": "Gate HTTP early data on replay-safe request semantics",
        "summary": "Use RFC 8470 — Using Early Data in HTTP to review this narrow operational decision without extending the source beyond its stated scope.",
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        "potentially_affected": "Teams, systems, services, or facilities within the stated scope of RFC 8470 — Using Early Data in HTTP",
        "dse_recommendation": "Compare the observed state with the cited official source, document applicability and exceptions, and test any approved change with rollback safeguards.",
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            "name": "RFC 8470 — Using Early Data in HTTP",
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        "content_html": "<p>Treat this document as a focused evidence review: Gate HTTP early data on replay-safe request semantics. Only the official source and traced locations below supply facts. Confirm applicability before acting.</p>\n<h2>Source fact:</h2>\n<p>The official <a href=\"https://www.rfc-editor.org/rfc/rfc8470.html\" target=\"_blank\" rel=\"noopener noreferrer\">RFC 8470 — Using Early Data in HTTP</a> from RFC Editor / Internet Engineering Task Force supports the following bounded statements:</p>\n<ul>\n<li>Without resource-specific permission, an origin server must reject early data or defer request processing until the TLS handshake completes. The research record locates this support at <strong>Section 3 (Supporting Early Data in HTTP Servers)</strong>.</li>\n<li>Clients may send known-safe methods in early data but must not send unsafe or unknown-safety methods; a 425 response requires retry without early data. The research record locates this support at <strong>Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code)</strong>.</li>\n<li>An intermediary marks replay-exposed forwarded requests with Early-Data: 1, cannot remove that field, and cannot forward early unless the previous hop did or safe retry is known. The research record locates this support at <strong>Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field)</strong>.</li>\n</ul>\n<p>Only the traced statements above are asserted as source facts. Apply the review to clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points after confirming that the source and deployed context match.</p>\n<h2>What the source does not establish</h2>\n<p>This RFC evidence supports only the named web or transport decision; it does not prove browser, intermediary, library, or service compatibility. It does not establish a deployment&#8217;s current state, authorize a production change, prove compliance, or show that DNS, certificates, identity providers, time, content delivery, network paths, and application ownership are healthy. Documented options are review inputs, not universal mandates.</p>\n<h2>Applicability questions</h2>\n<ul>\n<li>For source statement 1 at <strong>Section 3 (Supporting Early Data in HTTP Servers)</strong>, which observable configuration, record, or test can confirm applicability here?</li>\n<li>For source statement 2 at <strong>Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code)</strong>, which observable configuration, record, or test can confirm applicability here?</li>\n<li>For source statement 3 at <strong>Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field)</strong>, which observable configuration, record, or test can confirm applicability here?</li>\n<li>What inventory proves which parts of clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points are in and out of scope?</li>\n<li>Which condition in DNS, certificates, identity providers, time, content delivery, network paths, and application ownership must be healthy before evidence is trustworthy?</li>\n<li>What result would disprove the working assumption and return the issue to the owner?</li>\n</ul>\n<h2>DSE recommendation:</h2>\n<p>DSE recommends using the cited source as the evidence anchor for this decision. Begin by recording scope and current state before deciding whether a change is warranted. Record the source location, examined part of clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points, observed and expected states, owner, and reason for deviation.</p>\n<p>If the review warrants change, use a bounded implementation with prerequisites, test population, monitoring, abort criteria, and a rehearsed reversal. Sequence checks for DNS, certificates, identity providers, time, content delivery, network paths, and application ownership and sanitize protected material before retention.</p>\n<h2>Verification and evidence</h2>\n<p>Keep the source locations <strong>Section 3 (Supporting Early Data in HTTP Servers)</strong>; <strong>Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code)</strong>; <strong>Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field)</strong> adjacent to the sanitized artifacts used for comparison. Prefer request and response captures, negotiated protocol details, headers, cache behavior, certificate state, and server or proxy logs, with enough identity and timing data for an independent recheck.</p>\n<p>Close the review only when the evidence, exception handling, resulting action, and after-state are linked. Schedule a new review after material technical, organizational, incident, or source changes; today&#8217;s observation is not a continuing guarantee.</p>\n<h2>Official references</h2>\n<ul>\n<li><a href=\"https://www.rfc-editor.org/rfc/rfc8470.html\" target=\"_blank\" rel=\"noopener noreferrer\">RFC 8470 — Using Early Data in HTTP</a> — RFC Editor / Internet Engineering Task Force</li>\n</ul>",
        "content_text": "Treat this document as a focused evidence review: Gate HTTP early data on replay-safe request semantics. Only the official source and traced locations below supply facts. Confirm applicability before acting.\nSource fact:\nThe official RFC 8470 — Using Early Data in HTTP from RFC Editor / Internet Engineering Task Force supports the following bounded statements:\n\nWithout resource-specific permission, an origin server must reject early data or defer request processing until the TLS handshake completes. The research record locates this support at Section 3 (Supporting Early Data in HTTP Servers).\nClients may send known-safe methods in early data but must not send unsafe or unknown-safety methods; a 425 response requires retry without early data. The research record locates this support at Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code).\nAn intermediary marks replay-exposed forwarded requests with Early-Data: 1, cannot remove that field, and cannot forward early unless the previous hop did or safe retry is known. The research record locates this support at Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field).\n\nOnly the traced statements above are asserted as source facts. Apply the review to clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points after confirming that the source and deployed context match.\nWhat the source does not establish\nThis RFC evidence supports only the named web or transport decision; it does not prove browser, intermediary, library, or service compatibility. It does not establish a deployment’s current state, authorize a production change, prove compliance, or show that DNS, certificates, identity providers, time, content delivery, network paths, and application ownership are healthy. Documented options are review inputs, not universal mandates.\nApplicability questions\n\nFor source statement 1 at Section 3 (Supporting Early Data in HTTP Servers), which observable configuration, record, or test can confirm applicability here?\nFor source statement 2 at Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code), which observable configuration, record, or test can confirm applicability here?\nFor source statement 3 at Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field), which observable configuration, record, or test can confirm applicability here?\nWhat inventory proves which parts of clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points are in and out of scope?\nWhich condition in DNS, certificates, identity providers, time, content delivery, network paths, and application ownership must be healthy before evidence is trustworthy?\nWhat result would disprove the working assumption and return the issue to the owner?\n\nDSE recommendation:\nDSE recommends using the cited source as the evidence anchor for this decision. Begin by recording scope and current state before deciding whether a change is warranted. Record the source location, examined part of clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points, observed and expected states, owner, and reason for deviation.\nIf the review warrants change, use a bounded implementation with prerequisites, test population, monitoring, abort criteria, and a rehearsed reversal. Sequence checks for DNS, certificates, identity providers, time, content delivery, network paths, and application ownership and sanitize protected material before retention.\nVerification and evidence\nKeep the source locations Section 3 (Supporting Early Data in HTTP Servers); Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code); Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field) adjacent to the sanitized artifacts used for comparison. Prefer request and response captures, negotiated protocol details, headers, cache behavior, certificate state, and server or proxy logs, with enough identity and timing data for an independent recheck.\nClose the review only when the evidence, exception handling, resulting action, and after-state are linked. Schedule a new review after material technical, organizational, incident, or source changes; today’s observation is not a continuing guarantee.\nOfficial references\n\nRFC 8470 — Using Early Data in HTTP — RFC Editor / Internet Engineering Task Force",
        "content_markdown": "Treat this document as a focused evidence review: Gate HTTP early data on replay-safe request semantics. Only the official source and traced locations below supply facts. Confirm applicability before acting.\n\n## Source fact:\n\nThe official [RFC 8470 — Using Early Data in HTTP](https://www.rfc-editor.org/rfc/rfc8470.html) from RFC Editor / Internet Engineering Task Force supports the following bounded statements:\n\n- Without resource-specific permission, an origin server must reject early data or defer request processing until the TLS handshake completes. The research record locates this support at Section 3 (Supporting Early Data in HTTP Servers).\n\n- Clients may send known-safe methods in early data but must not send unsafe or unknown-safety methods; a 425 response requires retry without early data. The research record locates this support at Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code).\n\n- An intermediary marks replay-exposed forwarded requests with Early-Data: 1, cannot remove that field, and cannot forward early unless the previous hop did or safe retry is known. The research record locates this support at Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field).\n\nOnly the traced statements above are asserted as source facts. Apply the review to clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points after confirming that the source and deployed context match.\n\n## What the source does not establish\n\nThis RFC evidence supports only the named web or transport decision; it does not prove browser, intermediary, library, or service compatibility. It does not establish a deployment’s current state, authorize a production change, prove compliance, or show that DNS, certificates, identity providers, time, content delivery, network paths, and application ownership are healthy. Documented options are review inputs, not universal mandates.\n\n## Applicability questions\n\n- For source statement 1 at Section 3 (Supporting Early Data in HTTP Servers), which observable configuration, record, or test can confirm applicability here?\n\n- For source statement 2 at Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code), which observable configuration, record, or test can confirm applicability here?\n\n- For source statement 3 at Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field), which observable configuration, record, or test can confirm applicability here?\n\n- What inventory proves which parts of clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points are in and out of scope?\n\n- Which condition in DNS, certificates, identity providers, time, content delivery, network paths, and application ownership must be healthy before evidence is trustworthy?\n\n- What result would disprove the working assumption and return the issue to the owner?\n\n## DSE recommendation:\n\nDSE recommends using the cited source as the evidence anchor for this decision. Begin by recording scope and current state before deciding whether a change is warranted. Record the source location, examined part of clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points, observed and expected states, owner, and reason for deviation.\n\nIf the review warrants change, use a bounded implementation with prerequisites, test population, monitoring, abort criteria, and a rehearsed reversal. Sequence checks for DNS, certificates, identity providers, time, content delivery, network paths, and application ownership and sanitize protected material before retention.\n\n## Verification and evidence\n\nKeep the source locations Section 3 (Supporting Early Data in HTTP Servers); Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code); Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field) adjacent to the sanitized artifacts used for comparison. Prefer request and response captures, negotiated protocol details, headers, cache behavior, certificate state, and server or proxy logs, with enough identity and timing data for an independent recheck.\n\nClose the review only when the evidence, exception handling, resulting action, and after-state are linked. Schedule a new review after material technical, organizational, incident, or source changes; today’s observation is not a continuing guarantee.\n\n## Official references\n\n- [RFC 8470 — Using Early Data in HTTP](https://www.rfc-editor.org/rfc/rfc8470.html) — RFC Editor / Internet Engineering Task Force"
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                "articleBody": "Treat this document as a focused evidence review: Gate HTTP early data on replay-safe request semantics. Only the official source and traced locations below supply facts. Confirm applicability before acting.\nSource fact:\nThe official RFC 8470 — Using Early Data in HTTP from RFC Editor / Internet Engineering Task Force supports the following bounded statements:\n\nWithout resource-specific permission, an origin server must reject early data or defer request processing until the TLS handshake completes. The research record locates this support at Section 3 (Supporting Early Data in HTTP Servers).\nClients may send known-safe methods in early data but must not send unsafe or unknown-safety methods; a 425 response requires retry without early data. The research record locates this support at Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code).\nAn intermediary marks replay-exposed forwarded requests with Early-Data: 1, cannot remove that field, and cannot forward early unless the previous hop did or safe retry is known. The research record locates this support at Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field).\n\nOnly the traced statements above are asserted as source facts. Apply the review to clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points after confirming that the source and deployed context match.\nWhat the source does not establish\nThis RFC evidence supports only the named web or transport decision; it does not prove browser, intermediary, library, or service compatibility. It does not establish a deployment’s current state, authorize a production change, prove compliance, or show that DNS, certificates, identity providers, time, content delivery, network paths, and application ownership are healthy. Documented options are review inputs, not universal mandates.\nApplicability questions\n\nFor source statement 1 at Section 3 (Supporting Early Data in HTTP Servers), which observable configuration, record, or test can confirm applicability here?\nFor source statement 2 at Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code), which observable configuration, record, or test can confirm applicability here?\nFor source statement 3 at Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field), which observable configuration, record, or test can confirm applicability here?\nWhat inventory proves which parts of clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points are in and out of scope?\nWhich condition in DNS, certificates, identity providers, time, content delivery, network paths, and application ownership must be healthy before evidence is trustworthy?\nWhat result would disprove the working assumption and return the issue to the owner?\n\nDSE recommendation:\nDSE recommends using the cited source as the evidence anchor for this decision. Begin by recording scope and current state before deciding whether a change is warranted. Record the source location, examined part of clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points, observed and expected states, owner, and reason for deviation.\nIf the review warrants change, use a bounded implementation with prerequisites, test population, monitoring, abort criteria, and a rehearsed reversal. Sequence checks for DNS, certificates, identity providers, time, content delivery, network paths, and application ownership and sanitize protected material before retention.\nVerification and evidence\nKeep the source locations Section 3 (Supporting Early Data in HTTP Servers); Sections 4 (Using Early Data in HTTP Clients) and 5.2 (The 425 (Too Early) Status Code); Sections 4 (Using Early Data in HTTP Clients) and 5.1 (The Early-Data Header Field) adjacent to the sanitized artifacts used for comparison. Prefer request and response captures, negotiated protocol details, headers, cache behavior, certificate state, and server or proxy logs, with enough identity and timing data for an independent recheck.\nClose the review only when the evidence, exception handling, resulting action, and after-state are linked. Schedule a new review after material technical, organizational, incident, or source changes; today’s observation is not a continuing guarantee.\nOfficial references\n\nRFC 8470 — Using Early Data in HTTP — RFC Editor / Internet Engineering Task Force",
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