gnutls_rehandshake(3) [centos man page]

gnutls_rehandshake(3)						      gnutls						     gnutls_rehandshake(3)

NAME

       gnutls_rehandshake - API function

SYNOPSIS

       #include <gnutls/gnutls.h>

       int gnutls_rehandshake(gnutls_session_t session);

ARGUMENTS

       gnutls_session_t session
		   is a gnutls_session_t structure.

DESCRIPTION

       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 will should with an alert message, thus the return code will be GNUTLS_E_WARN-
       ING_ALERT_RECEIVED and the alert will be GNUTLS_A_NO_RENEGOTIATION.  A client may also choose to ignore this message.

RETURNS

       GNUTLS_E_SUCCESS on success, otherwise a negative error code.

REPORTING BUGS

       Report bugs to <bug-gnutls@gnu.org>.
       General guidelines for reporting bugs: http://www.gnu.org/gethelp/
       GnuTLS home page: http://www.gnu.org/software/gnutls/

COPYRIGHT

       Copyright (C) 2012 Free Software Foundation, Inc..
       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 info and gnutls programs are properly installed at your site,
       the command

	      info gnutls

       should give you access to the complete manual.  As an alternative you may obtain the manual from:

	      http://www.gnu.org/software/gnutls/manual/

gnutls								      3.1.15						     gnutls_rehandshake(3)

gnutls_record_recv(3)						      gnutls						     gnutls_record_recv(3)

NAME

       gnutls_record_recv - reads data from the TLS record protocol

SYNOPSIS

       #include <gnutls/gnutls.h>

       ssize_t gnutls_record_recv(gnutls_session_t session, void * data, size_t sizeofdata);

ARGUMENTS

       gnutls_session_t session
		   is a gnutls_session_t structure.

       void * data the buffer that the data will be read into

       size_t sizeofdata
		   the number of requested bytes

DESCRIPTION

       This  function  has  the  similar semantics with recv().  The only difference is that it accepts a GnuTLS session, and uses different error
       codes.

       In the special case that a server requests a renegotiation, the client may receive an error code of GNUTLS_E_REHANDSHAKE.  This message may
       be simply ignored, replied with an alert GNUTLS_A_NO_RENEGOTIATION, or replied with a new handshake, depending on the client's will.

       If  EINTR is returned by the internal push function (the default is recv()) then GNUTLS_E_INTERRUPTED will be returned.	If GNUTLS_E_INTER-
       RUPTED or GNUTLS_E_AGAIN is returned, you must call this function again to get the data.  See also gnutls_record_get_direction().

       A server may also receive GNUTLS_E_REHANDSHAKE when a client has initiated a handshake. In that case the server can only initiate  a  hand-
       shake or terminate the connection.

RETURNS

       the  number  of bytes received and zero on EOF.	A negative error code is returned in case of an error.	The number of bytes received might
       be less than sizeofdata.

REPORTING BUGS

       Report  bugs  to  <bug-gnutls@gnu.org>.	 GnuTLS  home  page:  http://www.gnu.org/software/gnutls/  General  help   using   GNU	 software:
       http://www.gnu.org/gethelp/

COPYRIGHT

       Copyright (C) 2008 Free Software Foundation.
       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 info and gnutls programs are properly installed at your  site,
       the command

	      info gnutls

       should give you access to the complete manual.

gnutls								       2.8.6						     gnutls_record_recv(3)