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gnutls_record_send(3)               gnutls               gnutls_record_send(3)


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 type.

       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, or provide a NULL pointer for  data and 0 for
       data_size , in order to write the same data as before. If you wish to
       discard the previous data instead of retrying, you must call
       gnutls_record_discard_queued() before calling this function with
       different parameters. Note that the latter works only on special
       transports (e.g., UDP).  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: https://www.gnutls.org


COPYRIGHT

       Copyright (C) 2001- 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/local/share/doc/gnutls/ directory does not contain the HTML
       form visit

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

gnutls                               3.7.9               gnutls_record_send(3)

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