unable to have ssl_invalid_cert event handler called

[cyberswordman]

SleekXMPP version: 1.3.3
python 2.7.13 (really winpython 2.7.13)

I'm trying to work with the send_client example.
Trying to connect with a public jabber server (007jabber.com), which uses connection encryption.
I get reports from normal jabber clients that the certificate for the server is bad, but I can still connect to it with them (pidgin and Gajim).
When connecting to it using SleekXMPP, the connection is refused:

SendMsgBot init start
DEBUG Loaded Plugin: RFC 6120: Stream Feature: STARTTLS
DEBUG Loaded Plugin: RFC 6120: Stream Feature: Resource Binding
DEBUG Loaded Plugin: RFC 3920: Stream Feature: Start Session
DEBUG Loaded Plugin: RFC 6121: Stream Feature: Roster Versioning
DEBUG Loaded Plugin: RFC 6121: Stream Feature: Subscription Pre-Approval
DEBUG Loaded Plugin: RFC 6120: Stream Feature: SASL
SendMsgBot init end
DEBUG Loaded Plugin: XEP-0030: Service Discovery
DEBUG Loaded Plugin: XEP-0199: XMPP Ping
Connecting...
DEBUG DNS: Querying 007jabber.com for AAAA records.
DEBUG DNS: Error retreiving AAAA address info for 007jabber.com.
DEBUG DNS: Querying 007jabber.com for A records.
DEBUG Socket Wrapped for SSL
DEBUG Connecting to 43.231.234.102:5222
ERROR CERT: Invalid certificate trust chain.
Unable to connect.
doTest end

I implemented the method to catch the event

#def discard(self, event):
def discard(self, event, cert, direct):
    print("Handling invalid certificate")
    return

(tried both the variants fo the definition)

and registered it into the init:

self.add_event_handler("ssl_invalid_cert", self.discard)

but no matter what, the event handler is never called (the appended log is taken in this condition)

[ammgws]

Have you tried attaching it to ssl_invalid_chain instead of ssl_invalid_cert?

[Neustradamus]

Have you tried with 1.3.2?

[Neustradamus]

@cyberswordman @ammgws: Any news?

Have you tested with "master"?

• https://github.com/fritzy/SleekXMPP/commits/develop

It works?