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gnutls_record_send_file(3)          gnutls          gnutls_record_send_file(3)


NAME

       gnutls_record_send_file - API function


SYNOPSIS

       #include <gnutls/gnutls.h>

       ssize_t gnutls_record_send_file(gnutls_session_t session, int fd, off_t
       * offset, size_t count);


ARGUMENTS

       gnutls_session_t session
                   is a gnutls_session_t type.

       int fd      file descriptor from which to read data.

       off_t * offset
                   Is relative to file offset, denotes the starting location
                   for reading.  after function returns, it point to position
                   following last read byte.

       size_t count
                   is the length of the data in bytes to be read from file and
                   send.


DESCRIPTION

       This function sends data from  fd . If KTLS (kernel TLS) is enabled, it
       will use the sendfile() system call to avoid overhead of copying data
       between user space and the kernel. Otherwise, this functionality is
       merely emulated by calling read() and gnutls_record_send(). If this
       implementation is suboptimal, check whether KTLS is enabled using
       gnutls_transport_is_ktls_enabled().

       If  offset is NULL then file offset is incremented by number of bytes
       send, otherwise file offset remains unchanged.


RETURNS

       The number of bytes sent, or a negative error code.


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_file(3)

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