NAME¶
gnutls_record_send - API function
SYNOPSIS¶
#include <gnutls/gnutls.h>
ssize_t gnutls_record_send(gnutls_session_t session, const void
* data, size_t data_size);
ARGUMENTS¶
- gnutls_session_t session
- is a gnutls_session_t structure.
- const void * data
- contains the data to send
- size_t data_size
- is the length of the data
DESCRIPTION¶
This function has the similar semantics with
send(). The only difference
is that it accepts a GnuTLS session, and uses different error codes. Note that
if the send buffer is full,
send() will block this function. See the
send() documentation for more information.
You can replace the default push function which is
send(), by using
gnutls_transport_set_push_function().
If the EINTR is returned by the internal push function then
GNUTLS_E_INTERRUPTED will be returned. If
GNUTLS_E_INTERRUPTED
or
GNUTLS_E_AGAIN is returned, you must call this function again, with
the exact same parameters; alternatively you could provide a
NULL
pointer for data, and 0 for size. cf.
gnutls_record_get_direction().
Note that in DTLS this function will return the
GNUTLS_E_LARGE_PACKET
error code if the send data exceed the data MTU value - as returned by
gnutls_dtls_get_data_mtu(). The errno value EMSGSIZE also maps to
GNUTLS_E_LARGE_PACKET. Note that since 3.2.13 this function can be
called under cork in DTLS mode, and will refuse to send data over the MTU size
by returning
GNUTLS_E_LARGE_PACKET.
RETURNS¶
The number of bytes sent, or a negative error code. The number of bytes sent
might be less than
data_size . The maximum number of bytes this
function can send in a single call depends on the negotiated maximum record
size.
REPORTING BUGS¶
Report bugs to <bugs@gnutls.org>.
Home page:
http://www.gnutls.org
COPYRIGHT¶
Copyright © 2001-2014 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 /usr/share/doc/gnutls/ directory does not contain the HTML form visit
- http://www.gnutls.org/manual/