SSL_set_fd - Connect the SSL object with a file descriptor
SSL *ssl, int fd ); int SSL_set_rfd(
SSL *ssl, int fd ); int SSL_set_wfd(
SSL *ssl, int fd );
The SSL_set_fd() function sets the file descriptor fd as
the input/output facility for the TLS/SSL (encrypted) side
of ssl. The 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 the fd. The
BIO and the SSL engine inherit the behavior of fd. If fd
is non-blocking, the ssl will also have non-blocking
If there was already a BIO connected to ssl, the
BIO_free() function will be called (for both the reading
and writing side, if different).
The SSL_set_rfd() and SSL_set_wfd() functions perform the
respective action, but only for the read channel or the
write channel, which can be set independently.
The following return values can occur: The operation
failed. Check the error stack to find out why. The operation
Functions: 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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