typo.
[openssl.git] / doc / ssl / SSL_CTX_set_quiet_shutdown.pod
1 =pod
2
3 =head1 NAME
4
5 SSL_CTX_set_quiet_shutdown, SSL_CTX_get_quiet_shutdown, SSL_set_quiet_shutdown, SSL_get_quiet_shutdown - manipulate shutdown behaviour
6
7 =head1 SYNOPSIS
8
9  #include <openssl/ssl.h>
10
11  void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
12  int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx);
13
14  void SSL_set_quiet_shutdown(SSL *ssl, int mode);
15  int SSL_get_quiet_shutdown(SSL *ssl);
16
17 =head1 DESCRIPTION
18
19 SSL_CTX_set_quiet_shutdown() sets the "quiet shutdown" flag for B<ctx> to be
20 B<mode>. SSL objects created from B<ctx> inherit the B<mode> valid at the time
21 L<SSL_new(3)|SSL_new(3)> is called. B<mode> may be 0 or 1.
22
23 SSL_CTX_get_quiet_shutdown() returns the "quiet shutdown" setting of B<ctx>.
24
25 SSL_set_quiet_shutdown() sets the "quiet shutdown" flag for B<ssl> to be
26 B<mode>. The setting stays valid until B<ssl> is removed with
27 L<SSL_free(3)|SSL_free(3)> or SSL_set_quiet_shutdown() is called again.
28 It is not changed when L<SSL_clear(3)|SSL_clear(3)> is called.
29 B<mode> may be 0 or 1.
30
31 SSL_get_quiet_shutdown() returns the "quiet shutdown" setting of B<ssl>.
32
33 =head1 NOTES
34
35 Normally when a SSL connection is finished, the parties must send out
36 "close notify" alert messages using L<SSL_shutdown(3)|SSL_shutdown(3)>
37 for a clean shutdown.
38
39 When setting the "quiet shutdown" flag to 1, L<SSL_shutdown(3)|SSL_shutdown(3)>
40 will set the internal flags to SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN.
41 (L<SSL_shutdown(3)|SSL_shutdown(3)> then behaves like
42 L<SSL_set_shutdown(3)|SSL_set_shutdown(3)> called with
43 SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN.)
44 The session is thus considered to be shutdown, but no "close notify" alert
45 is sent to the peer. This behaviour violates the TLS standard.
46
47 The default is normal shutdown behaviour as described by the TLS standard.
48
49 =head1 RETURN VALUES
50
51 SSL_CTX_set_quiet_shutdown() and SSL_set_quiet_shutdown() do not return
52 diagnostic information.
53
54 SSL_CTX_get_quiet_shutdown() and SSL_get_quiet_shutdown return the current
55 setting.
56
57 =head1 SEE ALSO
58
59 L<ssl(3)|ssl(3)>, L<SSL_shutdown(3)|SSL_shutdown(3)>,
60 L<SSL_set_shutdown(3)|SSL_set_shutdown(3)>, L<SSL_new(3)|SSL_new(3)>,
61 L<SSL_clear(3)|SSL_clear(3)>, L<SSL_free(3)|SSL_free(3)>
62
63 =cut