Update build for OpenSSL-0.9.8j upgrade.
[dragonfly.git] / secure / lib / libssl / man / SSL_clear.3
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132.\" ========================================================================
133.\"
134.IX Title "SSL_clear 3"
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135.TH SSL_clear 3 "2009-01-11" "0.9.8j" "OpenSSL"
136.\" For nroff, turn off justification. Always turn off hyphenation; it makes
137.\" way too many mistakes in technical documents.
138.if n .ad l
139.nh
984263bc 140.SH "NAME"
a7d27d5a 141SSL_clear \- reset SSL object to allow another connection
984263bc 142.SH "SYNOPSIS"
e056f0e0 143.IX Header "SYNOPSIS"
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144.Vb 1
145\& #include <openssl/ssl.h>
e257b235 146\&
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147\& int SSL_clear(SSL *ssl);
148.Ve
149.SH "DESCRIPTION"
e056f0e0 150.IX Header "DESCRIPTION"
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151Reset \fBssl\fR to allow another connection. All settings (method, ciphers,
152BIOs) are kept.
153.SH "NOTES"
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154.IX Header "NOTES"
155SSL_clear is used to prepare an \s-1SSL\s0 object for a new connection. While all
156settings are kept, a side effect is the handling of the current \s-1SSL\s0 session.
984263bc 157If a session is still \fBopen\fR, it is considered bad and will be removed
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158from the session cache, as required by \s-1RFC2246\s0. A session is considered open,
159if \fISSL_shutdown\fR\|(3) was not called for the connection
160or at least \fISSL_set_shutdown\fR\|(3) was used to
161set the \s-1SSL_SENT_SHUTDOWN\s0 state.
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162.PP
163If a session was closed cleanly, the session object will be kept and all
164settings corresponding. This explicitly means, that e.g. the special method
165used during the session will be kept for the next handshake. So if the
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166session was a TLSv1 session, a \s-1SSL\s0 client object will use a TLSv1 client
167method for the next handshake and a \s-1SSL\s0 server object will use a TLSv1
984263bc 168server method, even if SSLv23_*_methods were chosen on startup. This
e056f0e0 169will might lead to connection failures (see \fISSL_new\fR\|(3))
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170for a description of the method's properties.
171.SH "WARNINGS"
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172.IX Header "WARNINGS"
173\&\fISSL_clear()\fR resets the \s-1SSL\s0 object to allow for another connection. The
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174reset operation however keeps several settings of the last sessions
175(some of these settings were made automatically during the last
176handshake). It only makes sense when opening a new session (or reusing
177an old one) with the same peer that shares these settings.
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178\&\fISSL_clear()\fR is not a short form for the sequence
179\&\fISSL_free\fR\|(3); \fISSL_new\fR\|(3); .
984263bc 180.SH "RETURN VALUES"
e056f0e0 181.IX Header "RETURN VALUES"
984263bc 182The following return values can occur:
e056f0e0 183.IP "0" 4
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184The \fISSL_clear()\fR operation could not be performed. Check the error stack to
185find out the reason.
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186.IP "1" 4
187.IX Item "1"
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188The \fISSL_clear()\fR operation was successful.
189.PP
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190\&\fISSL_new\fR\|(3), \fISSL_free\fR\|(3),
191\&\fISSL_shutdown\fR\|(3), \fISSL_set_shutdown\fR\|(3),
192\&\fISSL_CTX_set_options\fR\|(3), \fIssl\fR\|(3),
193\&\fISSL_CTX_set_client_cert_cb\fR\|(3)