13.4.15 Semantics of ping requests and pong responses

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A ping request asks 'who are you, and what time is it'. The associated pong response answers the first question using the Logiweb identifier and answers the second question by a timestamp. When mirroring a Logiweb server it is reasonable to start asking what time it is according to the servers clock and then querying all information residing on the server. Later on, one may then do incremental mirroring by asking for all information that has changed since last.

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