gnutls_rehandshake(3)              gnutls              gnutls_rehandshake(3)

NAME         top

       gnutls_rehandshake - API function

SYNOPSIS         top

       #include <gnutls/gnutls.h>

       int gnutls_rehandshake(gnutls_session_t session);

ARGUMENTS         top

       gnutls_session_t session
                   is a gnutls_session_t type.

DESCRIPTION         top

       This function will renegotiate security parameters with the client.
       This should only be called in case of a server.

       This message informs the peer that we want to renegotiate parameters
       (perform a handshake).

       If this function succeeds (returns 0), you must call the
       gnutls_handshake() function in order to negotiate the new parameters.

       Since TLS is full duplex some application data might have been sent
       during peer's processing of this message. In that case one should
       call gnutls_record_recv() until GNUTLS_E_REHANDSHAKE is returned to
       clear any pending data. Care must be taken, if rehandshake is
       mandatory, to terminate if it does not start after some threshold.

       If the client does not wish to renegotiate parameters he should reply
       with an alert message, thus the return code will be
       GNUTLS_E_WARNING_ALERT_RECEIVED and the alert will be
       GNUTLS_A_NO_RENEGOTIATION.  A client may also choose to ignore this

RETURNS         top

       GNUTLS_E_SUCCESS on success, otherwise a negative error code.

REPORTING BUGS         top

       Report bugs to <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001-2018 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         top

       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 

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this manual
       page, send it to  This page was obtained from the
       tarball gnutls-3.6.2.tar.xz fetched from
       ⟨⟩ on 2018-04-30.  If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
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gnutls                              3.6.2              gnutls_rehandshake(3)