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cf.timings.client_tcp_rtt_msec

cf.timings.client_tcp_rtt_msec Number

The smoothed TCP round-trip time (RTT) between Cloudflare and the client in milliseconds.

This field is only populated for TCP (HTTP/1, HTTP/2) connections. For QUIC connections, the value is 0.

Example value:

Example usage:

# Match requests over TCP where the RTT exceeds 200 ms
cf.timings.client_quic_rtt_msec > 200

Categories:

Request