Connecting to an MQTT Broker over SSL does not work

Hey,

Expliot gets stuck, when trying to connect to an MQTT Broker which does support SSL only (8883/tcp open ssl/mosquitto version 1.5.7).

ef> run mqtt.generic.crackauth -r 127.0.0.1 -p 8883 -u redacted -w redacted
[*] Test:         mqtt.generic.crackauth
[*] Author:       Aseem Jakhar
[*] Author Email: aseemjakhar@gmail.com
[*] Reference(s): ['http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/mqtt-v3.1.1.html']
[*] Category:     Protocol=mqtt|Interface=software|Action=analysis
[*] Target:       Name=generic|Version=generic|Vendor=generic
[*] 
[*] Attempting to authenticate with the MQTT Broker (127.0.0.1) on port (8883)