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.\" ========================================================================
.\"
.IX Title "SSL_get_fd 3"
.TH SSL_get_fd 3 "2016-09-22" "1.0.2i" "OpenSSL"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
SSL_get_fd \- get file descriptor linked to an SSL object
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& int SSL_get_fd(const SSL *ssl);
\& int SSL_get_rfd(const SSL *ssl);
\& int SSL_get_wfd(const SSL *ssl);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fISSL_get_fd()\fR returns the file descriptor which is linked to \fBssl\fR.
\&\fISSL_get_rfd()\fR and \fISSL_get_wfd()\fR return the file descriptors for the
read or the write channel, which can be different. If the read and the
write channel are different, \fISSL_get_fd()\fR will return the file descriptor
of the read channel.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
The following return values can occur:
.IP "\-1" 4
.IX Item "-1"
The operation failed, because the underlying \s-1BIO\s0 is not of the correct type
(suitable for file descriptors).
.IP ">=0" 4
.IX Item ">=0"
The file descriptor linked to \fBssl\fR.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fISSL_set_fd\fR\|(3), \fIssl\fR\|(3) , \fIbio\fR\|(3)
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