Smart Meter Texas SSL Certificate Verification Error

The problem

Smart Meter Texas integration has been working (including with Energy Dashboard since 40348 was resolved but as of late yesterday, is now reporting Failed to Connect with an SSL Certificate Error.

What is version of Home Assistant Core has the issue?

core-2021.10.2 and core-2021.10.4

What was the last working version of Home Assistant Core?

core-2021.10.2

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Smart Meter Texas

Link to integration documentation on our website

https://www.home-assistant.io/integrations/smart_meter_texas/

Example YAML snippet

No response

Anything in the logs that might be useful for us?

Logger: homeassistant.config_entries
Source: components/smart_meter_texas/__init__.py:49
First occurred: 12:59:56 PM (1 occurrences)
Last logged: 12:59:56 PM

Error setting up entry NateEaton for smart_meter_texas
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 969, in _wrap_create_connection
    return await self._loop.create_connection(*args, **kwargs)  # type: ignore  # noqa
  File "/usr/local/lib/python3.9/asyncio/base_events.py", line 1081, in create_connection
    transport, protocol = await self._create_connection_transport(
  File "/usr/local/lib/python3.9/asyncio/base_events.py", line 1111, in _create_connection_transport
    await waiter
  File "/usr/local/lib/python3.9/asyncio/sslproto.py", line 528, in data_received
    ssldata, appdata = self._sslpipe.feed_ssldata(data)
  File "/usr/local/lib/python3.9/asyncio/sslproto.py", line 188, in feed_ssldata
    self._sslobj.do_handshake()
  File "/usr/local/lib/python3.9/ssl.py", line 944, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: Hostname mismatch, certificate is not valid for 'smartmetertexas.com'. (_ssl.c:1129)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 304, in async_setup
    result = await component.async_setup_entry(hass, self)  # type: ignore
  File "/usr/src/homeassistant/homeassistant/components/smart_meter_texas/__init__.py", line 49, in async_setup_entry
    await smart_meter_texas_data.client.authenticate()
  File "/usr/local/lib/python3.9/site-packages/smart_meter_texas/__init__.py", line 196, in authenticate
    await self._init_websession()
  File "/usr/local/lib/python3.9/site-packages/smart_meter_texas/__init__.py", line 147, in _init_websession
    await self.websession.get(
  File "/usr/local/lib/python3.9/site-packages/aiohttp/client.py", line 520, in _request
    conn = await self._connector.connect(
  File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 535, in connect
    proto = await self._create_connection(req, traces, timeout)
  File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 892, in _create_connection
    _, proto = await self._create_direct_connection(req, traces, timeout)
  File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 1051, in _create_direct_connection
    raise last_exc
  File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 1020, in _create_direct_connection
    transp, proto = await self._wrap_create_connection(
  File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 971, in _wrap_create_connection
    raise ClientConnectorCertificateError(req.connection_key, exc) from exc
aiohttp.client_exceptions.ClientConnectorCertificateError: Cannot connect to host smartmetertexas.com:443 ssl:True [SSLCertVerificationError: (1, "[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: Hostname mismatch, certificate is not valid for 'smartmetertexas.com'. (_ssl.c:1129)")]

Additional information

This integration has been working fine since July and stopped working last night (2021.10.11 about 9pm CT), still not working this afternoon even after updating Core from 2021.10.2 to 2021.10.4. I am able to log into my account on smartmetertexas.com.

July

Yesterday

[johnavich]

Called their help line, they escalated the ticket to their L2 team, who deals with API and such. I was given an ETA of 48h for a fix, so we should just buckle down.

On that note, i’ve been looking through the code, and cannot locate where it looks for the domain to connect to. If someone could point that out, i’d be grateful.

[johnavich]

This issue was caused by SmartMeterTexas.com SSL Renewal process. They didn’t include the SAN for “smartmetertexas.com”, and only included “www.smartmetertexas.com”. I have already emailed SMT support about their SSL issue(s), and hope to get a reply soon.