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SSL_get_fd(3)



NAME

SSL_get_fd, SSL_get_rfd, SSL_get_wfd - get file descriptor linked to an SSL object


SYNOPSIS

 #include <openssl/ssl.h>
 int SSL_get_fd(const SSL *ssl);
 int SSL_get_rfd(const SSL *ssl);
 int SSL_get_wfd(const SSL *ssl);


DESCRIPTION

SSL_get_fd() returns the file descriptor which is linked to ssl. SSL_get_rfd() and SSL_get_wfd() return the file descriptors for the read or the write channel, which can be different. If the read and the write channel are different, SSL_get_fd() will return the file descriptor of the read channel.


RETURN VALUES

The following return values can occur:

-1

The operation failed, because the underlying BIO is not of the correct type (suitable for file descriptors).

>=0

The file descriptor linked to ssl.


SEE ALSO

SSL_set_fd(3), ssl(3) , bio(3)