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SSL_set_fd(3) OpenSSL SSL_set_fd(3)
SSL_set_fd - connect the SSL object with a file descriptor
int SSL_set_fd(SSL *ssl, int fd);
int SSL_set_rfd(SSL *ssl, int fd);
int SSL_set_wfd(SSL *ssl, int fd);
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 con-
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 read-
ing and writing side, if different).
SSL_set_rfd() and SSL_set_wfd() perform the respective action, but only for the read chan-
nel or the write channel, which can be set independently.
The following return values can occur:
0 The operation failed. Check the error stack to find out why.
1 The operation succeeded.
SSL_get_fd(3), SSL_set_bio(3), SSL_connect(3), SSL_accept(3), SSL_shutdown(3), ssl(3) ,
0.9.7d 2002-04-30 SSL_set_fd(3)
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