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TLS_DONE(3)		    libdill Library Functions		     TLS_DONE(3)

NAME
     tls_done - half-closes a TLS protocol

SYNOPSIS
	    #include <libdill.h>

	    int tls_done(
		int s,
		int64_t deadline);

DESCRIPTION
     WARNING:  This  is experimental functionality and the API may change in the
     future.

     TLS is a cryptographic protocol to provide secure	communication  over  the
     network.  It is a bytestream protocol.

     This  function  closes  the outbound half of TLS connection.  This will, in
     turn, cause the peer to get EPIPE error after it has received all the data.

     s: The TLS connection handle.

     deadline: A point in time when the operation should time out, in  millisec-
     onds.  Use the now function to get your current point in time.  0 means im-
     mediate  timeout, i.e., perform the operation if possible or return without
     blocking if not.  -1 means no deadline, i.e., the call will  block  forever
     if the operation cannot be performed.

     This  function is not available if libdill is compiled with --disable-sock-
     ets option.

     This function is not available if libdill is compiled without  --enable-tls
     option.

RETURN VALUE
     In  case of success the function returns 0.  In case of error it returns -1
     and sets errno to one of the values below.

ERRORS
     * EBADF: Invalid handle.

     * ECANCELED: Current coroutine was canceled.

     * ENOTSUP: The handle does not support this operation.

     * EPIPE: The connection was already half-closed.

     * ETIMEDOUT: Deadline was reached.

EXAMPLE
	    int s = tcp_connect(&addr, -1);
	    s = tls_attach_client(s, -1);
	    bsend(s, "ABC", 3, -1);
	    char buf[3];
	    ssize_t sz = brecv(s, buf, sizeof(buf), -1);
	    s = tls_detach(s, -1);
	    tcp_close(s);

SEE ALSO
     brecv(3) brecvl(3) bsend(3) bsendl(3) now(3)  tls_attach_client(3)  tls_at-
     tach_client_mem(3)  tls_attach_server(3)  tls_attach_server_mem(3)  tls_de-
     tach(3)

libdill 							     TLS_DONE(3)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=tls_done&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>

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