Keep reference to SSL verify_call in Connection object (#956)
* Keep reference to SSL verify_call in Connection object
If a set_verify is used on a context before and after a Connection
the reference in the SSL* object still points to the old _verify_helper
object. Since this object has no longer any references to it, the
callback can result in a segfault.
This commit fixes the issues by ensuring that as long as the
Connection object/SSL* object lives a reference to the callback
function is held.
* Add Unit test for set_verify_callback deference
2 files changed