On 16/04/18 09:19, marcus.schafheu...@gmx.de wrote:
> SSL_set_bio(ssl, NULL, NULL); // free BIOs when finished

There should be no reason to do this. The BIO's will get freed
automatically by the SSL_free() call.

> Is this a faulty behavior of OpenSSL 1.1.0 or is the fault on my side? 

This looks like a bug in OpenSSL. It should be able to tolerate passing
NULL for wbio in the SSL_set_bio call, but apparently it can't in the
case of a failed handshake. Please could you open an issue on github for

The workaround is to remove the SSL_set_bio(SSL, NULL, NULL) call. It
should not be necessary.


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