SSL_get_fd(3)

     SSL_get_fd(3)          0.9.6h (2000-09-16)          SSL_get_fd(3)

     NAME
          SSL_get_fd - get file descriptor linked to an SSL object

     SYNOPSIS
           #include <openssl/ssl.h>

           int SSL_get_fd(SSL *ssl);
           int SSL_get_rfd(SSL *ssl);
           int SSL_get_wfd(SSL *ssl);

     DESCRIPTION
          SSL_get_fd() returns the file descriptor which is linked to
          ssl.  SSL_get_rfd() and SSL_get_wfd() return the file
          descriptors for the read or the write channel, which can be
          different. If the read and the write channel are different,
          SSL_get_fd() will return the file descriptor of the read
          channel.

     RETURN VALUES
          The following return values can occur:

          -1  The operation failed, because the underlying BIO is not
              of the correct type (suitable for file descriptors).

          >=0 The file descriptor linked to ssl.

     SEE ALSO
          SSL_set_fd(3), ssl(3) , bio(3)

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