https://netacoding.com/tags/rfc-9114/ Recent content in RFC-9114 on Netacoding | Cybersecurity, Assembly & Network Research https://netacoding.com/img/logo-netacoding.png https://netacoding.com/img/logo-netacoding.png Hugo en-us Sun, 09 Aug 2026 00:00:00 +0000 https://netacoding.com/posts/blog_post_esf_h3/ Sun, 09 Aug 2026 00:00:00 +0000 https://netacoding.com/posts/blog_post_esf_h3/ Sending an RFC 9114-compliant trailer HEADERS frame to music.youtube.com causes Google's ESF (Edge Side Frontend) to hang for ~60 seconds before closing the connection with QUIC INTERNAL_ERROR (0x0001) — the RFC-defined signal for implementation errors. 100 sequential runs confirm zero rate limiting: the crash occurs at the H3 frame parser layer before any HTTP-layer defense is reachable. Cross-vendor confirmation on a second major CDN provider. Reported to Google VRP twice; closed by automated system both times within minutes.