MAIN_DURATION is initiliazed in Worker constructor, MAIN_DURATION check is removed from two functions because those functions are needed in warm-up phase as well.

MAIN_DURATION is initiliazed in Worker constructor, MAIN_DURATION check is removed from two functions because those functions are needed in warm-up phase as well.

* Adding timing-sensitive load test option in h2load.

* more checks added for parameters

* A worker thread can control its clients' warmup and main duration.

* Changed warmup to an enum variable.

* removed unnecessary call to ev_timer_stop

* assertion is done before starting main measurement phase

* phase variable is implemented only inside the Worker class

* enum to enum class

* else indentation corrected

* check added for timing-based test when duration CB is called explicitly

* New argument is introduced for timing-based benchmarking.

* styling corrections

* duration watcher initialization is pushed back into warmup timeout

* Warmup and Duration timer is moved to Worker instead of clients. Now both timers and phase belongs to the Workers.

* some client functions are modified to return if it's not main_duration phase. client is not destructed but sessions are terminated

* outputs are adjusted for thread.

* Needed to check if a session exist before terminating

* formatting

* more formatting

* formatting

fix: typo

Came up in downstream code review by @lucaslago https://github.com/nodejs/node/pull/14239#discussion_r127539852

README.rst: fix typo

fix up grammar in submit_trailer docs

nghttpx: Verify OCSP response using trusted CA certificates

nghttpx: Set default minimum TLS version to TLSv1.2

Previously, the default minimum TLS version was TLSv1.1, but the
default cipher list didn't include any compatible ciphers with it.
This made handshake fail if TLSv1.1 was negotiated because there was
no shared ciphers.  To make the default settings consistent, the
default minimum TLS version is now TLSv1.2.

fix cleaning in out-of-tree builds

The altered previously failed if the rst sources hadn't been copied over.

It looks like we can use nocopy version here.  We use nocopy version
in frontend in day 1.

spelling mistake in arguments to build nghttp apps