master-server/deps/curl/docs/cmdline-opts/tcp-fastopen.md

c	SPDX-License-Identifier	Long	Added	Help	Category	Multi	See-also	Example
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.	curl	tcp-fastopen	7.49.0	Use TCP Fast Open	connection	boolean	false-start	--tcp-fastopen $URL

--tcp-fastopen

Enable use of TCP Fast Open (RFC 7413). TCP Fast Open is a TCP extension that allows data to get sent earlier over the connection (before the final handshake ACK) if the client and server have been connected previously.