SSL_set_fd - 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(3) , bio(3)


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