In our use-case we do a lot (100+ per minute) of Http-checks to the same host. When establishing a new TCP-Connection on every check the performance could be a problem.

When doing those requests via SSL the problem is even worse.

Currently we implemented our own Module for doing Http-Requests via libcurl and using the Curl-Shared-Handle to share connections between those requests. This works fine for us.
The new get_value_http you implemented in ZBXNEXT-4358 could be used instead of our own module to do the checks if connection-reuse would be used.

I can provide a patch as this is a very small change.

However, maybe some other have the use-case where they explicitly don't want conneciton-reuse. If an option for that is needed the work might be a bit higher.