SSL handshake failed on verifying the certificate
protocol: <asyncio.sslproto.SSLProtocol object at 0x7fa4abc1f1d0>
transport: <_SelectorSocketTransport fd=7 read=polling write=<idle, bufsize=0>>
Traceback (most recent call last):
  File "/usr/lib64/python3.7/asyncio/sslproto.py", line 625, in _on_handshake_complete
    raise handshake_exc
  File "/usr/lib64/python3.7/asyncio/sslproto.py", line 189, in feed_ssldata
    self._sslobj.do_handshake()
  File "/usr/lib64/python3.7/ssl.py", line 763, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: IP address mismatch, certificate is not valid for '127.0.0.1'. (_ssl.c:1045)
SSL error in data received
protocol: <asyncio.sslproto.SSLProtocol object at 0x7fa4abc1f1d0>
transport: <_SelectorSocketTransport closing fd=7 read=idle write=<idle, bufsize=0>>
Traceback (most recent call last):
  File "/usr/lib64/python3.7/asyncio/sslproto.py", line 526, in data_received
    ssldata, appdata = self._sslpipe.feed_ssldata(data)
  File "/usr/lib64/python3.7/asyncio/sslproto.py", line 189, in feed_ssldata
    self._sslobj.do_handshake()
  File "/usr/lib64/python3.7/ssl.py", line 763, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: IP address mismatch, certificate is not valid for '127.0.0.1'. (_ssl.c:1045)
Traceback (most recent call last):
  File "minimal_server.py", line 41, in <module>
    main()
  File "minimal_server.py", line 37, in main
    loop.run_until_complete(client)
  File "/usr/lib64/python3.7/asyncio/base_events.py", line 568, in run_until_complete
    return future.result()
  File "minimal_server.py", line 16, in client_send_echo
    loop=loop, ssl=ssl_context)
  File "/usr/lib64/python3.7/asyncio/streams.py", line 77, in open_connection
    lambda: protocol, host, port, **kwds)
  File "/usr/lib64/python3.7/asyncio/base_events.py", line 970, in create_connection
    ssl_handshake_timeout=ssl_handshake_timeout)
  File "/usr/lib64/python3.7/asyncio/base_events.py", line 998, in _create_connection_transport
    await waiter
  File "/usr/lib64/python3.7/asyncio/sslproto.py", line 526, in data_received
    ssldata, appdata = self._sslpipe.feed_ssldata(data)
  File "/usr/lib64/python3.7/asyncio/sslproto.py", line 189, in feed_ssldata
    self._sslobj.do_handshake()
  File "/usr/lib64/python3.7/ssl.py", line 763, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: IP address mismatch, certificate is not valid for '127.0.0.1'. (_ssl.c:1045)