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@deftypefun {int} {gnutls_session_get_data} (gnutls_session_t @var{session}, void * @var{session_data}, size_t * @var{session_data_size})
@var{session}: is a @code{gnutls_session_t} structure.
@var{session_data}: is a pointer to space to hold the session.
@var{session_data_size}: is the session_data's size, or it will be set by the function.
Returns all session parameters needed to be stored to support resumption.
The client should call this, and store the returned session data. A session
may be resumed later by calling @code{gnutls_session_set_data()} .
This function must be called after a successful handshake.
@strong{Returns:} On success, @code{GNUTLS_E_SUCCESS} (0) is returned, otherwise
an error code is returned.
@end deftypefun
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