NAME

       gnutls_transport_set_pull_timeout_function - API function

SYNOPSIS

       #include <gnutls/gnutls.h>

       void gnutls_transport_set_pull_timeout_function(gnutls_session_t session, gnutls_pull_timeout_func func);

ARGUMENTS

       gnutls_session_t session
                   is a gnutls_session_t type.

       gnutls_pull_timeout_func func
                   a callback function

DESCRIPTION

       This  is  the function where you set a function for gnutls to know whether data are ready to be received.
       It should wait for data a given time frame in milliseconds. The callback should return 0  on  timeout,  a
       positive  number  if  data  can  be  received, and -1 on error.  You'll need to override this function if
       select() is not suitable for the provided transport calls.

       As with select(), if the timeout value is zero the callback should return zero if no data are immediately
       available.  The  special  value  GNUTLS_INDEFINITE_TIMEOUT  indicates  that  the  callback  should   wait
       indefinitely for data.

        gnutls_pull_timeout_func   is   of  the  form,  int  (*gnutls_pull_timeout_func)(gnutls_transport_ptr_t,
       unsigned int ms);

       This callback is necessary when gnutls_handshake_set_timeout() or  gnutls_record_set_timeout()  are  set,
       under TLS1.3 and for enforcing the DTLS mode timeouts when in blocking mode.

       For  compatibility  with  future GnuTLS versions this callback must be set when a custom pull function is
       registered. The callback will not be used when the session is in TLS mode with non-blocking sockets. That
       is, when GNUTLS_NONBLOCK is specified for a TLS session in gnutls_init().

       The helper function gnutls_system_recv_timeout() is provided to simplify writing callbacks.

SINCE

       3.0

REPORTING BUGS

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

COPYRIGHT

       Copyright © 2001-2023 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

       https://www.gnutls.org/manual/

gnutls                                                3.8.3        gnutls_transport_set_pull_timeout_function(3)