---
name: "gnutls_handshake_write"
section: "3"
platform: "linux"
package: "gnutls"
version: "3.8.13-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gnutls_handshake_write"
---

# gnutls\_handshake\_write(3)

API function

## NAME

gnutls\_handshake\_write - API function

## SYNOPSIS

**#include \<gnutls/gnutls.h\>**

**int gnutls\_handshake\_write(gnutls\_session\_t** *session***, gnutls\_record\_encryption\_level\_t** *level***, const void \*** *data***, size\_t** *data\_size***);**

## ARGUMENTS

- gnutls\_session\_t session

  is a **gnutls\_session\_t** type.

- gnutls\_record\_encryption\_level\_t level

  the current encryption level for reading a handshake message

- const void \* data

  the (const) handshake data to be processed

- size\_t data\_size

  the size of data

## DESCRIPTION

This function processes a handshake message in the encryption level specified with  *level* . Prior to calling this function, a handshake read callback must be set on  *session* . Use **gnutls\_handshake\_set\_read\_function()** to do this.

## SINCE

3\.7.0

## REPORTING BUGS

Report bugs to \<bugs@gnutls.org\>.\
 Home page: https://www.gnutls.org

## COPYRIGHT

Copyright © 2001-2023 Free Software Foundation, Inc., and others.\
 Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.

## SEE ALSO

The full documentation for **gnutls** is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit

- https://www.gnutls.org/manual/