1gnutls_handshake(3)                 gnutls                 gnutls_handshake(3)
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NAME

6       gnutls_handshake - This is the main function in the handshake protocol.
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SYNOPSIS

9       #include <gnutls/gnutls.h>
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11       int gnutls_handshake(gnutls_session_t session);
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ARGUMENTS

14       gnutls_session_t session
15                   is a gnutls_session_t structure.
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DESCRIPTION

18       This  function does the handshake of the TLS/SSL protocol, and initial‐
19       izes the TLS connection.
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21       This function will fail if any problem is encountered, and will  return
22       a  negative error code. In case of a client, if the client has asked to
23       resume a session, but the server couldn't, then a full  handshake  will
24       be performed.
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26       The  non-fatal  errors  such as GNUTLS_E_AGAIN and GNUTLS_E_INTERRUPTED
27       interrupt the handshake procedure, which should be  later  be  resumed.
28       Call    this    function    again,    until    it    returns   0;   cf.
29       gnutls_record_get_direction() and gnutls_error_is_fatal().
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31       If this function is called by a server after a rehandshake request then
32       GNUTLS_E_GOT_APPLICATION_DATA or GNUTLS_E_WARNING_ALERT_RECEIVED may be
33       returned. Note that these are non fatal errors, only  in  the  specific
34       case  of  a  rehandshake. Their meaning is that the client rejected the
35       rehandshake request.
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REPORTING BUGS

38       Report bugs to <bug-gnutls@gnu.org>.
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41       Copyright © 2006 Free Software Foundation.
42       Permission is granted to make and distribute verbatim  copies  of  this
43       manual  provided  the  copyright  notice and this permission notice are
44       preserved on all copies.
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SEE ALSO

47       The full documentation for gnutls is maintained as  a  Texinfo  manual.
48       If  the  info  and gnutls programs are properly installed at your site,
49       the command
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51              info gnutls
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53       should give you access to the complete manual.
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57gnutls                               1.6.3                 gnutls_handshake(3)
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