NAME

       SSL_set_fd, SSL_set_rfd, SSL_set_wfd - connect the SSL object with a file descriptor

SYNOPSIS

        #include <openssl/ssl.h>

        int SSL_set_fd(SSL *ssl, int fd);
        int SSL_set_rfd(SSL *ssl, int fd);
        int SSL_set_wfd(SSL *ssl, int fd);

DESCRIPTION

       SSL_set_fd() sets the file descriptor fd as the input/output facility for the TLS/SSL (encrypted) side of
       ssl. fd will typically be the socket file descriptor of a network connection.

       When performing the operation, a socket BIO is automatically created to interface between the ssl and fd.
       The BIO and hence the SSL engine inherit the behaviour of fd. If fd is non-blocking, the ssl will also
       have non-blocking behaviour.

       If there was already a BIO connected to ssl, BIO_free() will be called (for both the reading and writing
       side, if different).

       SSL_set_rfd() and SSL_set_wfd() perform the respective action, but only for the read channel or the write
       channel, which can be set independently.

RETURN VALUES

       The following return values can occur:

       0   The operation failed. Check the error stack to find out why.

       1   The operation succeeded.

SEE ALSO

       SSL_get_fd(3), SSL_set_bio(3), SSL_connect(3), SSL_accept(3), SSL_shutdown(3), ssl(7) , bio(7)

COPYRIGHT

       Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the OpenSSL license (the "License").  You may not use this file except in compliance with
       the License.  You can obtain a copy in the file LICENSE in the source distribution or at
       <https://www.openssl.org/source/license.html>.