MySQL 5.7 servers with older TLS versions (1.0/1.1) cause HandshakeFailure when ssl-mode=preferred because the underlying TLS library requires 1.2+. Now automatically retries with ssl-mode=disabled when handshake fails. Closes #273
MySQL 5.7 servers with older TLS versions (1.0/1.1) cause HandshakeFailure when ssl-mode=preferred because the underlying TLS library requires 1.2+. Now automatically retries with ssl-mode=disabled when handshake fails. Closes #273