xref: /curl/docs/cmdline-opts/false-start.md (revision f81f351b)
1---
2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
3SPDX-License-Identifier: curl
4Long: false-start
5Help: Enable TLS False Start
6Protocols: TLS
7Added: 7.42.0
8Category: tls
9Multi: boolean
10See-also:
11  - tcp-fastopen
12Example:
13  - --false-start $URL
14---
15
16# `--false-start`
17
18Use false start during the TLS handshake. False start is a mode where a TLS
19client starts sending application data before verifying the server's Finished
20message, thus saving a round trip when performing a full handshake.
21
22This functionality is currently only implemented in the Secure Transport (on
23iOS 7.0 or later, or macOS 10.9 or later) backend.
24