curl-w32/docs/cmdline-opts/false-start.md

c	SPDX-License-Identifier	Long	Help	Protocols	Added	Category	Multi	See-also	Example
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.	curl	false-start	Enable TLS False Start	TLS	7.42.0	tls	boolean	tcp-fastopen	--false-start $URL

--false-start

Tells curl to use false start during the TLS handshake. False start is a mode where a TLS client starts sending application data before verifying the server's Finished message, thus saving a round trip when performing a full handshake.

This is currently only implemented in the Secure Transport (on iOS 7.0 or later, or OS X 10.9 or later) backend.