erlang - Profiling http connections -

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I try to find a way for a profile of the http / https connection made by my Erlang App

I will need to know how much time it takes to make a connection to the web server, to send a request to the web server, to get information before the web server (aka a web server and take action on the time required by the request To prepare) and a whole web server Time to get level.

What is the easiest way to do this? Perhaps you know a customer who can easily be modified to collect this information?

Many HTTP analysis tools built-in.

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