NAME

SYNOPSIS

 #include <openssl/ssl.h>

 void SSL_set_bio(SSL *ssl, BIO *rbio, BIO *wbio);
 void SSL_set0_rbio(SSL *s, BIO *rbio);
 void SSL_set0_wbio(SSL *s, BIO *wbio);

DESCRIPTION

SSL_set0_wbio() works in the same as SSL_set0_rbio() except that it connects the BIO wbio for the write operations of the ssl object. Note that if the rbio and wbio are the same then SSL_set0_rbio() and SSL_set0_wbio() each take ownership of one reference. Therefore, it may be necessary to increment the number of references available using BIO_up_ref(3) before calling the set0 functions.

SSL_set_bio() is similar to SSL_set0_rbio() and SSL_set0_wbio() except that it connects both the rbio and the wbio at the same time, and transfers the ownership of rbio and wbio to ssl according to the following set of rules:

• If neither the rbio or wbio have changed from their previous values then nothing is done.
• If the rbio and wbio parameters are different and both are different to their previously set values then one reference is consumed for the rbio and one reference is consumed for the wbio.
• If the rbio and wbio parameters are the same and the rbio is not the same as the previously set value then one reference is consumed.
• If the rbio and wbio parameters are the same and the rbio is the same as the previously set value, then no additional references are consumed.
• If the rbio and wbio parameters are different and the rbio is the same as the previously set value then one reference is consumed for the wbio and no references are consumed for the rbio.
• If the rbio and wbio parameters are different and the wbio is the same as the previously set value and the old rbio and wbio values were the same as each other then one reference is consumed for the rbio and no references are consumed for the wbio.
• If the rbio and wbio parameters are different and the wbio is the same as the previously set value and the old rbio and wbio values were different to each other then one reference is consumed for the rbio and one reference is consumed for the wbio.

Because of this complexity, this function should be avoided; use SSL_set0_rbio() and SSL_set0_wbio() instead.

RETURN VALUES

SEE ALSO

HISTORY

COPYRIGHT

Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.