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SSL_set_fd(3) OpenSSL SSL_set_fd(3)
NAME
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)
0.9.8 2009-04-03 SSL_set_fd(3)
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