CURLOPT_TCP_KEEPALIVE(3) on macOS
The text daf0e6323778, 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.
enable TCP keep-alive probing
The text daf0e6323778, 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.
enable TCP keep-alive probing