1SSL_get_fd(3)                       OpenSSL                      SSL_get_fd(3)
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NAME

6       SSL_get_fd - get file descriptor linked to an SSL object
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SYNOPSIS

9        #include <openssl/ssl.h>
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11        int SSL_get_fd(const SSL *ssl);
12        int SSL_get_rfd(const SSL *ssl);
13        int SSL_get_wfd(const SSL *ssl);
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DESCRIPTION

16       SSL_get_fd() returns the file descriptor which is linked to ssl.
17       SSL_get_rfd() and SSL_get_wfd() return the file descriptors for the
18       read or the write channel, which can be different. If the read and the
19       write channel are different, SSL_get_fd() will return the file
20       descriptor of the read channel.
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RETURN VALUES

23       The following return values can occur:
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25       -1  The operation failed, because the underlying BIO is not of the
26           correct type (suitable for file descriptors).
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28       >=0 The file descriptor linked to ssl.
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SEE ALSO

31       SSL_set_fd(3), ssl(3) , bio(3)
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351.0.2o                            2020-01-28                     SSL_get_fd(3)
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