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1 .\" $NetBSD: libcrypto.pl,v 1.3 2007/11/27 22:16:03 christos Exp $
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134 .\" ========================================================================
135 .\"
136 .IX Title "SSL_set_fd 3"
137 .TH SSL_set_fd 3 "2000-09-16" "1.1.0-dev" "OpenSSL"
138 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
139 .\" way too many mistakes in technical documents.
140 .if n .ad l
141 .nh
142 .SH "NAME"
143 SSL_set_fd \- connect the SSL object with a file descriptor
144 .SH "LIBRARY"
145 libcrypto, -lcrypto
146 .SH "SYNOPSIS"
147 .IX Header "SYNOPSIS"
148 .Vb 1
149 \& #include <openssl/ssl.h>
150 \&
151 \& int SSL_set_fd(SSL *ssl, int fd);
152 \& int SSL_set_rfd(SSL *ssl, int fd);
153 \& int SSL_set_wfd(SSL *ssl, int fd);
154 .Ve
155 .SH "DESCRIPTION"
156 .IX Header "DESCRIPTION"
157 \&\fISSL_set_fd()\fR sets the file descriptor \fBfd\fR as the input/output facility
158 for the \s-1TLS/SSL\s0 (encrypted) side of \fBssl\fR. \fBfd\fR will typically be the
159 socket file descriptor of a network connection.
160 .PP
161 When performing the operation, a \fBsocket \s-1BIO\s0\fR is automatically created to
162 interface between the \fBssl\fR and \fBfd\fR. The \s-1BIO\s0 and hence the \s-1SSL\s0 engine
163 inherit the behaviour of \fBfd\fR. If \fBfd\fR is non-blocking, the \fBssl\fR will
164 also have non-blocking behaviour.
165 .PP
166 If there was already a \s-1BIO\s0 connected to \fBssl\fR, \fIBIO_free()\fR will be called
167 (for both the reading and writing side, if different).
168 .PP
169 \&\fISSL_set_rfd()\fR and \fISSL_set_wfd()\fR perform the respective action, but only
170 for the read channel or the write channel, which can be set independently.
171 .SH "RETURN VALUES"
172 .IX Header "RETURN VALUES"
173 The following return values can occur:
174 .IP "0" 4
175 The operation failed. Check the error stack to find out why.
176 .IP "1" 4
177 .IX Item "1"
178 The operation succeeded.
179 .SH "SEE ALSO"
180 .IX Header "SEE ALSO"
181 \&\fISSL_get_fd\fR\|(3), \fISSL_set_bio\fR\|(3),
182 \&\fISSL_connect\fR\|(3), \fISSL_accept\fR\|(3),
183 \&\fISSL_shutdown\fR\|(3), \fIssl\fR\|(3) , \fIopenssl_bio\fR\|(3)