OSError -9984

[tac240]

Trying to use SSL with MQTTClient (simple.py) gives this error. Cannot find any listing anywhere to describe it.

    client = MQTTClient(client_id="", server=host,user="",password=token,port=8883,  keepalive=0, ssl=True, ssl_params= {'cert_reqs':ssl.CERT_REQUIRED, 'ca_certs':'/flash/cert/ca.pem'})

WLAN connection succeeded!
Unhandled exception in thread started by <function main_loop at 0x3ffe7d50>
Traceback (most recent call last):
File "main.py", line 68, in main_loop
File "simple.py", line 61, in connect
OSError: -9984

[kruthers]

That's interesting, I get that same cryptic error when I test directly over an SSL socket with a bogus certificate:

>>> s = socket.socket()
>>> ss = ssl.wrap_socket(s, cert_reqs=ssl.CERT_REQUIRED, ca_certs=bad_cert)
>>> ss.connect(socket.getaddrinfo(host, 443)[0][-1])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
OSError: -9984

With other "wrong" certificates I've gotten OSError: [Errno -30592] MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE instead. Not sure why the difference.

Anyway, I know this post is old, just putting this here in case it helps someone in the future.

K