On Jun 6, 2017 10:47 AM, "s S via curl-library" <curl-library_at_cool.haxx.se>
wrote:

> Hi,
>
> I am trying to find the following metrics for a http request and its
> response using curl,
>
> 1. Client time - how much time is spent by http client (curl) in
> establishing the connection and sending the query to the server.
>
> 2. Server time - how much time the server took in "processing" the query
> and sending the response to the client.
>
> 3. Network time - The round trip time - for the network in between client
> and server.
>
> 4. Total time - The total time spent by the client in initiating the
> connection with server, sending the query and receiving the reply.
>
> From the manuals, I could see that.
> time_total could give "4. Total time" and
> time_pretransfer could give "1.Client time",
> (time_starttransfer) - (time_pretransfer) - (3.Network time) could give
> "2. Server time".
>
> I am not sure how to find the "Network time". The option of using half of
> time_connect can give an approx value of network time in most of the
> cases.This may not give the accurate value in case of retransmit during SYN
> or SYN/ACK.
>
> Please help by validating the above. In case if this require code changes
> in CURL I am planning to do it and some hints here could be very useful.
>
> Regards,
> Sundar
>
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Received on 2017-08-04