Can't disable SSL verification in async mode

[tflorac]

Hi,

I'm using httpx (0.24.1) with Python 3.7, Uvicorn and Starlette, in async mode.
I need to disable SSL certificates verification in my development environment, but I always get verification errors:

    self.client = httpx.AsyncClient(verify=False,
                                    follow_redirects=False)
    ...
    async with self.client.stream(method=self.get_method(request),
                                  url=remote,
                                  headers=self.get_headers(request),
                                  params=self.get_params(request),
                                  data=self.get_body(request),
                                  timeout=config.get('timeout')) as response:
        ...

The error is like this:

Traceback (most recent call last):
  File "/var/local/env/pycharm/lib/python3.7/site-packages/uvicorn/protocols/http/httptools_impl.py", line 436, in run_asgi
    self.scope, self.receive, self.send
  File "/var/local/env/pycharm/lib/python3.7/site-packages/uvicorn/middleware/proxy_headers.py", line 78, in __call__
    return await self.app(scope, receive, send)
  File "/var/local/home/tflorac/Dropbox/src/PyAMS-v2/pyams_http_proxy/src/pyams_http_proxy/webapp.py", line 36, in __call__
    return await super().__call__(scope, receive, send)
  File "/var/local/env/pycharm/lib/python3.7/site-packages/elasticapm/contrib/starlette/__init__.py", line 193, in __call__
    await self.app(scope, _request_receive or receive, wrapped_send)
  File "/var/local/home/tflorac/Dropbox/src/PyAMS-v2/pyams_http_proxy/src/pyams_http_proxy/proxy.py", line 105, in __call__
    timeout=config.get('timeout')) as response:
  File "/usr/lib/python3.7/contextlib.py", line 170, in __aenter__
    return await self.gen.__anext__()
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpx/_client.py", line 1577, in stream
    stream=True,
  File "/var/local/env/pycharm/lib/python3.7/site-packages/elasticapm/instrumentation/packages/httpx/async/httpx.py", line 56, in call
    response = await wrapped(*args, **kwargs)
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpx/_client.py", line 1621, in send
    history=[],
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpx/_client.py", line 1648, in _send_handling_auth
    history=history,
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpx/_client.py", line 1682, in _send_handling_redirects
    response = await self._send_single_request(request)
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpx/_client.py", line 1719, in _send_single_request
    response = await transport.handle_async_request(request)
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpx/_transports/default.py", line 353, in handle_async_request
    resp = await self._pool.handle_async_request(req)
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpcore/_async/connection_pool.py", line 262, in handle_async_request
    raise exc
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpcore/_async/connection_pool.py", line 245, in handle_async_request
    response = await connection.handle_async_request(request)
  File "/var/local/env/pycharm/lib/python3.7/site-packages/elasticapm/instrumentation/packages/httpx/async/httpcore.py", line 89, in call
    response = await wrapped(*args, **kwargs)
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpcore/_async/connection.py", line 92, in handle_async_request
    raise exc
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpcore/_async/connection.py", line 69, in handle_async_request
    stream = await self._connect(request)
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpcore/_async/connection.py", line 149, in _connect
    stream = await stream.start_tls(**kwargs)
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpcore/_backends/anyio.py", line 78, in start_tls
    raise exc
  File "/var/local/env/pycharm/lib/python3.7/site-packages/httpcore/_backends/anyio.py", line 74, in start_tls
    server_side=False,
  File "/var/local/env/pycharm/lib/python3.7/site-packages/anyio/streams/tls.py", line 123, in wrap
    await wrapper._call_sslobject_method(ssl_object.do_handshake)
  File "/var/local/env/pycharm/lib/python3.7/site-packages/anyio/streams/tls.py", line 131, in _call_sslobject_method
    result = func(*args)
  File "/usr/lib/python3.7/ssl.py", line 763, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1056)

Any idea?

Best regards,
Thierry

[tflorac]

I think I found the answer to my own question... :/
Sorry!