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gnutls_record_send

Section: gnutls (3)
Updated: 3.3.11
Index Return to Main Contents
 

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/


 

Index

NAME
SYNOPSIS
ARGUMENTS
DESCRIPTION
RETURNS
REPORTING BUGS
COPYRIGHT
SEE ALSO


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