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SSL_clear(3) OpenSSL SSL_clear(3)
SSL_clear - reset SSL object to allow another connection
int SSL_clear(SSL *ssl);
Reset ssl to allow another connection. All settings (method, ciphers,
BIOs) are kept.
SSL_clear is used to prepare an SSL object for a new connection. While
all settings are kept, a side effect is the handling of the current SSL
session. If a session is still open, it is considered bad and will be
removed from the session cache, as required by RFC2246. A session is
considered open, if SSL_shutdown(3) was not called for the connection
or at least SSL_set_shutdown(3) was used to set the SSL_SENT_SHUTDOWN
If a session was closed cleanly, the session object will be kept and
all settings corresponding. This explicitly means, that e.g. the spe-
cial method used during the session will be kept for the next hand-
shake. So if the session was a TLSv1 session, a SSL client object will
use a TLSv1 client method for the next handshake and a SSL server
object will use a TLSv1 server method, even if SSLv23_*_methods were
chosen on startup. This will might lead to connection failures (see
SSL_new(3)) for a description of the method's properties.
SSL_clear() resets the SSL object to allow for another connection. The
reset operation however keeps several settings of the last sessions
(some of these settings were made automatically during the last hand-
shake). It only makes sense when opening a new session (or reusing an
old one) with the same peer that shares these settings. SSL_clear() is
not a short form for the sequence SSL_free(3); SSL_new(3); .
The following return values can occur:
0 The SSL_clear() operation could not be performed. Check the error
stack to find out the reason.
1 The SSL_clear() operation was successful.
SSL_new(3), SSL_free(3), SSL_shutdown(3), SSL_set_shutdown(3),
SSL_CTX_set_options(3), ssl(3), SSL_CTX_set_client_cert_cb(3)
0.9.8e-rhel5 2002-02-27 SSL_clear(3)
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