NAME

       gnutls_heartbeat_ping - API function

SYNOPSIS

       #include <gnutls/gnutls.h>

       int  gnutls_heartbeat_ping(gnutls_session_t  session,  size_t data_size, unsigned int max_tries, unsigned
       int flags);

ARGUMENTS

       gnutls_session_t session
                   is a gnutls_session_t type.

       size_t data_size
                   is the length of the ping payload.

       unsigned int max_tries
                   if flags is GNUTLS_HEARTBEAT_WAIT then this sets the number of retransmissions. Use zero  for
                   indefinite (until timeout).

       unsigned int flags
                   if GNUTLS_HEARTBEAT_WAIT then wait for pong or timeout instead of returning immediately.

DESCRIPTION

       This function sends a ping to the peer. If the  flags is set to GNUTLS_HEARTBEAT_WAIT then it waits for a
       reply from the peer.

       Note that it is highly recommended to use this function with the flag GNUTLS_HEARTBEAT_WAIT, or you  need
       to handle retransmissions and timeouts manually.

       The  total  TLS  data transmitted as part of the ping message are given by the following formula: MAX(16,
       data_size )+gnutls_record_overhead_size()+3.

RETURNS

       GNUTLS_E_SUCCESS on success, otherwise a negative error code.

SINCE

       3.1.2

REPORTING BUGS

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

COPYRIGHT

       Copyright © 2001-2022 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

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