Rules - New QUIC RTT and delivery rate fields
UpdateUnverifiedAdded Sep 24, 2026
Two new fields are now available in rule expressions that surface Layer 4 transport telemetry from the client connection. Together with the existing cf.timings.client_tcp_rtt_msec field, these fields give you a complete picture of connection quality for both TCP and QUIC traffic , enabling transport-aware rules without requiring any client-side changes.
Topics: Governance, Observability, Developer tools, Performance
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