1 .\" $NetBSD: SSL_set_shutdown.3,v 1.14 2015/06/12 17:01:14 christos Exp $
3 .\" Automatically generated by Pod::Man 2.28 (Pod::Simple 3.28)
6 .\" ========================================================================
7 .de Sp \" Vertical space (when we can't use .PP)
11 .de Vb \" Begin verbatim text
16 .de Ve \" End verbatim text
20 .\" Set up some character translations and predefined strings. \*(-- will
21 .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
22 .\" double quote, and \*(R" will give a right double quote. \*(C+ will
23 .\" give a nicer C++. Capital omega is used to do unbreakable dashes and
24 .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
25 .\" nothing in troff, for use with C<>.
27 .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
31 . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
32 . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
47 .\" Escape single quotes in literal strings from groff's Unicode transform.
51 .\" If the F register is turned on, we'll generate index entries on stderr for
52 .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
53 .\" entries marked with X<> in POD. Of course, you'll have to process the
54 .\" output yourself in some meaningful fashion.
56 .\" Avoid warning from groff about undefined register 'F'.
60 .if \n(.g .if rF .nr rF 1
61 .if (\n(rF:(\n(.g==0)) \{
64 . tm Index:\\$1\t\\n%\t"\\$2"
74 .\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
75 .\" Fear. Run. Save yourself. No user-serviceable parts.
76 . \" fudge factors for nroff and troff
85 . ds #H ((1u-(\\\\n(.fu%2u))*.13m)
91 . \" simple accents for nroff and troff
101 . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
102 . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
103 . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
104 . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
105 . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
106 . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
108 . \" troff and (daisy-wheel) nroff accents
109 .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
110 .ds 8 \h'\*(#H'\(*b\h'-\*(#H'
111 .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
112 .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
113 .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
114 .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
115 .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
116 .ds ae a\h'-(\w'a'u*4/10)'e
117 .ds Ae A\h'-(\w'A'u*4/10)'E
118 . \" corrections for vroff
119 .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
120 .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
121 . \" for low resolution devices (crt and lpr)
122 .if \n(.H>23 .if \n(.V>19 \
135 .\" ========================================================================
137 .IX Title "SSL_set_shutdown 3"
138 .TH SSL_set_shutdown 3 "2014-04-07" "1.0.1n" "OpenSSL"
139 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
140 .\" way too many mistakes in technical documents.
144 SSL_set_shutdown, SSL_get_shutdown \- manipulate shutdown state of an SSL connection
148 .IX Header "SYNOPSIS"
150 \& #include <openssl/ssl.h>
152 \& void SSL_set_shutdown(SSL *ssl, int mode);
154 \& int SSL_get_shutdown(const SSL *ssl);
157 .IX Header "DESCRIPTION"
158 \&\fISSL_set_shutdown()\fR sets the shutdown state of \fBssl\fR to \fBmode\fR.
160 \&\fISSL_get_shutdown()\fR returns the shutdown mode of \fBssl\fR.
163 The shutdown state of an ssl connection is a bitmask of:
165 No shutdown setting, yet.
166 .IP "\s-1SSL_SENT_SHUTDOWN\s0" 4
167 .IX Item "SSL_SENT_SHUTDOWN"
168 A \*(L"close notify\*(R" shutdown alert was sent to the peer, the connection is being
169 considered closed and the session is closed and correct.
170 .IP "\s-1SSL_RECEIVED_SHUTDOWN\s0" 4
171 .IX Item "SSL_RECEIVED_SHUTDOWN"
172 A shutdown alert was received form the peer, either a normal \*(L"close notify\*(R"
175 \&\s-1SSL_SENT_SHUTDOWN\s0 and \s-1SSL_RECEIVED_SHUTDOWN\s0 can be set at the same time.
177 The shutdown state of the connection is used to determine the state of
178 the ssl session. If the session is still open, when
179 \&\fISSL_clear\fR\|(3) or \fISSL_free\fR\|(3) is called,
180 it is considered bad and removed according to \s-1RFC2246.\s0
181 The actual condition for a correctly closed session is \s-1SSL_SENT_SHUTDOWN
182 \&\s0(according to the \s-1TLS RFC,\s0 it is acceptable to only send the \*(L"close notify\*(R"
183 alert but to not wait for the peer's answer, when the underlying connection
185 \&\fISSL_set_shutdown()\fR can be used to set this state without sending a
186 close alert to the peer (see \fISSL_shutdown\fR\|(3)).
188 If a \*(L"close notify\*(R" was received, \s-1SSL_RECEIVED_SHUTDOWN\s0 will be set,
189 for setting \s-1SSL_SENT_SHUTDOWN\s0 the application must however still call
190 \&\fISSL_shutdown\fR\|(3) or \fISSL_set_shutdown()\fR itself.
192 .IX Header "RETURN VALUES"
193 \&\fISSL_set_shutdown()\fR does not return diagnostic information.
195 \&\fISSL_get_shutdown()\fR returns the current setting.
197 .IX Header "SEE ALSO"
198 \&\fIssl\fR\|(3), \fISSL_shutdown\fR\|(3),
199 \&\fISSL_CTX_set_quiet_shutdown\fR\|(3),
200 \&\fISSL_clear\fR\|(3), \fISSL_free\fR\|(3)