CURLOPT_TCP_KEEPINTVL(3) on macOS
The text e672dabd0bfa, as OS X 10.10.4, OS X 10.10.3, OS X 10.10.2, OS X 10.10.1, OS X 10.10 shipped it.
set TCP keep-alive interval
The text e672dabd0bfa, as OS X 10.10.4, OS X 10.10.3, OS X 10.10.2, OS X 10.10.1, OS X 10.10 shipped it.
set TCP keep-alive interval