docs(dns-monitors): document the HTTPS (RFC 9460) record type#397
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Add HTTPS to the supported record types and the DnsMonitor construct reference, plus an HTTPS JSON-response accordion and an HTTP/3 monitoring use case in the configuration page (assert alpn contains h3 via a text-answer capture group; ipv4hint/ipv6hint present).
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Swap the savearoundtrip.com example for is.checkly.online (a Checkly-owned domain that advertises HTTP/3), matching the page's real-domain examples; use its actual ipv4hint/ipv6hint values.
sujaya-sys
approved these changes
Jun 24, 2026
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What
Documents the new HTTPS (RFC 9460, DNS type 65 / SVCB) record type for DNS monitors — used to monitor a domain's HTTPS service-binding record (HTTP/3 advertisement via
alpn,ipv4hint/ipv6hint,ech).Changes
detect/uptime-monitoring/dns-monitors/overview.mdx— add HTTPS to the supported record types list.detect/uptime-monitoring/dns-monitors/configuration.mdx— add an HTTPS JSON-response accordion and a "Verify a domain advertises HTTP/3" use case; assertalpncontainsh3via a text-answer capture group, plusipv4hint/ipv6hintpresent. Includes the substring-precision caveat.constructs/dns-monitor.mdx— add HTTPS to therecordTypelist (CLI construct reference).Context
Pairs with the runner/API + webapp support (checkly/monorepo) and the CLI
DnsRecordTypeaddition (checkly/checkly-cli #1360).