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author | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
commit | 3562e78743202e43aec8727005182a2558117eca (patch) | |
tree | 8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/doc/ssl/SSL_set_shutdown.pod | |
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mkfontscale-1.0.6.tar.gz
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evieext-1.0.2.tar.gz
fixesproto-4.0.tar.gz
recordproto-1.13.2.tar.gz
randrproto-1.2.2.tar.gz
scrnsaverproto-1.1.0.tar.gz
renderproto-0.9.3.tar.gz
xcmiscproto-1.1.2.tar.gz
fontsproto-2.0.2.tar.gz
xextproto-7.0.3.tar.gz
xproto-7.0.14.tar.gz
libXdmcp-1.0.2.tar.gz
libxkbfile-1.0.5.tar.gz
libfontenc-1.0.4.tar.gz
libXfont-1.3.4.tar.gz
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Diffstat (limited to 'openssl/doc/ssl/SSL_set_shutdown.pod')
-rw-r--r-- | openssl/doc/ssl/SSL_set_shutdown.pod | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/openssl/doc/ssl/SSL_set_shutdown.pod b/openssl/doc/ssl/SSL_set_shutdown.pod new file mode 100644 index 000000000..011a022a1 --- /dev/null +++ b/openssl/doc/ssl/SSL_set_shutdown.pod @@ -0,0 +1,72 @@ +=pod + +=head1 NAME + +SSL_set_shutdown, SSL_get_shutdown - manipulate shutdown state of an SSL connection + +=head1 SYNOPSIS + + #include <openssl/ssl.h> + + void SSL_set_shutdown(SSL *ssl, int mode); + + int SSL_get_shutdown(const SSL *ssl); + +=head1 DESCRIPTION + +SSL_set_shutdown() sets the shutdown state of B<ssl> to B<mode>. + +SSL_get_shutdown() returns the shutdown mode of B<ssl>. + +=head1 NOTES + +The shutdown state of an ssl connection is a bitmask of: + +=over 4 + +=item 0 + +No shutdown setting, yet. + +=item SSL_SENT_SHUTDOWN + +A "close notify" shutdown alert was sent to the peer, the connection is being +considered closed and the session is closed and correct. + +=item SSL_RECEIVED_SHUTDOWN + +A shutdown alert was received form the peer, either a normal "close notify" +or a fatal error. + +=back + +SSL_SENT_SHUTDOWN and SSL_RECEIVED_SHUTDOWN can be set at the same time. + +The shutdown state of the connection is used to determine the state of +the ssl session. If the session is still open, when +L<SSL_clear(3)|SSL_clear(3)> or L<SSL_free(3)|SSL_free(3)> is called, +it is considered bad and removed according to RFC2246. +The actual condition for a correctly closed session is SSL_SENT_SHUTDOWN +(according to the TLS RFC, it is acceptable to only send the "close notify" +alert but to not wait for the peer's answer, when the underlying connection +is closed). +SSL_set_shutdown() can be used to set this state without sending a +close alert to the peer (see L<SSL_shutdown(3)|SSL_shutdown(3)>). + +If a "close notify" was received, SSL_RECEIVED_SHUTDOWN will be set, +for setting SSL_SENT_SHUTDOWN the application must however still call +L<SSL_shutdown(3)|SSL_shutdown(3)> or SSL_set_shutdown() itself. + +=head1 RETURN VALUES + +SSL_set_shutdown() does not return diagnostic information. + +SSL_get_shutdown() returns the current setting. + +=head1 SEE ALSO + +L<ssl(3)|ssl(3)>, L<SSL_shutdown(3)|SSL_shutdown(3)>, +L<SSL_CTX_set_quiet_shutdown(3)|SSL_CTX_set_quiet_shutdown(3)>, +L<SSL_clear(3)|SSL_clear(3)>, L<SSL_free(3)|SSL_free(3)> + +=cut |