1: =pod
    2: 
    3: =head1 NAME
    4: 
    5: SSL_get_fd - get file descriptor linked to an SSL object
    6: 
    7: =head1 SYNOPSIS
    8: 
    9:  #include <openssl/ssl.h>
   10: 
   11:  int SSL_get_fd(const SSL *ssl);
   12:  int SSL_get_rfd(const SSL *ssl);
   13:  int SSL_get_wfd(const SSL *ssl);
   14: 
   15: =head1 DESCRIPTION
   16: 
   17: SSL_get_fd() returns the file descriptor which is linked to B<ssl>.
   18: SSL_get_rfd() and SSL_get_wfd() return the file descriptors for the
   19: read or the write channel, which can be different. If the read and the
   20: write channel are different, SSL_get_fd() will return the file descriptor
   21: of the read channel.
   22: 
   23: =head1 RETURN VALUES
   24: 
   25: The following return values can occur:
   26: 
   27: =over 4
   28: 
   29: =item -1
   30: 
   31: The operation failed, because the underlying BIO is not of the correct type
   32: (suitable for file descriptors).
   33: 
   34: =item E<gt>=0
   35: 
   36: The file descriptor linked to B<ssl>.
   37: 
   38: =back
   39: 
   40: =head1 SEE ALSO
   41: 
   42: L<SSL_set_fd(3)|SSL_set_fd(3)>, L<ssl(3)|ssl(3)> , L<bio(3)|bio(3)>
   43: 
   44: =cut