# format strings
"[%START_TIME%] \"%REQ(:METHOD)% %REQ(X-ENVOY-ORIGINAL-PATH?:PATH)% %PROTOCOL%\" %RESPONSE_CODE% %RESPONSE_FLAGS% %BYTES_RECEIVED% %BYTES_SENT% %DURATION% %RESP(X-ENVOY-UPSTREAM-SERVICE-TIME)% \"%REQ(X-FORWARDED-FOR)%\" \"%REQ(USER-AGENT)%\" \"%REQ(X-REQUEST-ID)%\" \"%REQ(:AUTHORITY)%\" \"%UPSTREAM_HOST%\"\x0A"
"%START_TIME%"
"%BYTES_RECEIVED%"
"%PROTOCOL%"
"%RESPONSE_CODE%"
"%RESPONSE_CODE_DETAILS%"
"%BYTES_SENT%"
"%DURATION%"
"%RESPONSE_DURATION%"
"%RESPONSE_FLAGS%"
"%RESPONSE_TX_DURATION%"
"%ROUTE_NAME%"
"%UPSTREAM_HOST%"
"%UPSTREAM_CLUSTER%"
"%UPSTREAM_LOCAL_ADDRESS%"
"%UPSTREAM_TRANSPORT_FAILURE_REASON%"
"%DOWNSTREAM_REMOTE_ADDRESS%"
"%REQUESTED_SERVER_NAME%"
"%REQ"
"%TRAILER"
"%RESP"
"%DOWNSTREAM_PEER_CERT_V_END%"
"%HOSTNAME%"