Uvicorn worker are not taking ssl certfile from gunicorn config

[Soufian20]

I tried to configure gunicorn with uvicorn workler class to use SSL an recieved this exception

    run_gunicorn_app()
     └ <function run_gunicorn_app at 0x7f1d11e73640>
  File "/code/app/dotr_capi/_main.py", line 158, in run_gunicorn_app
     ).run()
   File "/usr/local/lib/python3.10/dist-packages/gunicorn/app/base.py", line 71, in run
    Arbiter(self).run()
    │       └ <_main.GunicornApplication object at 0x7f1d16581720>
    └ <class 'gunicorn.arbiter.Arbiter'>
   File "/usr/local/lib/python3.10/dist-packages/gunicorn/arbiter.py", line 210, in run
     self.manage_workers()
     │    └ <function Arbiter.manage_workers at 0x7f1d13bd2440>
     └ <gunicorn.arbiter.Arbiter object at 0x7f1d12828790>
   File "/usr/local/lib/python3.10/dist-packages/gunicorn/arbiter.py", line 570, in manage_workers
     self.spawn_workers()
     │    └ <function Arbiter.spawn_workers at 0x7f1d13bd2560>
     └ <gunicorn.arbiter.Arbiter object at 0x7f1d12828790>
   File "/usr/local/lib/python3.10/dist-packages/gunicorn/arbiter.py", line 641, in spawn_workers
    self.spawn_worker()
    │    └ <function Arbiter.spawn_worker at 0x7f1d13bd24d0>
    └ <gunicorn.arbiter.Arbiter object at 0x7f1d12828790>
   File "/usr/local/lib/python3.10/dist-packages/gunicorn/arbiter.py", line 608, in spawn_worker
     worker.init_process()
     │      └ <function UvicornWorker.init_process at 0x7f1d11bf0040>
    └ <uvicorn.workers.UvicornWorker object at 0x7f1d11c04ca0>
  File "/usr/local/lib/python3.10/dist-packages/uvicorn/workers.py", line 75, in init_process
    super().init_process()
   File "/usr/local/lib/python3.10/dist-packages/gunicorn/workers/base.py", line 143, in init_process
     self.run()
     │    └ <function UvicornWorker.run at 0x7f1d11bf0280>
     └ <uvicorn.workers.UvicornWorker object at 0x7f1d11c04ca0>
   File "/usr/local/lib/python3.10/dist-packages/uvicorn/workers.py", line 107, in run
     return asyncio.run(self._serve())
           │       │   │    └ <function UvicornWorker._serve at 0x7f1d11bf01f0>
           │       │   └ <uvicorn.workers.UvicornWorker object at 0x7f1d11c04ca0>
            │       └ <function run at 0x7f1d16136b00>
          └ <module 'asyncio' from '/usr/lib/python3.10/asyncio/__init__.py'>
  File "/usr/lib/python3.10/asyncio/runners.py", line 44, in run
     return loop.run_until_complete(main)
           │    │                  └ <coroutine object UvicornWorker._serve at 0x7f1d11c19e70>
           │    └ <cyfunction Loop.run_until_complete at 0x7f1d11c48ad0>
           └ <uvloop.Loop running=False closed=True debug=False>
   File "uvloop/loop.pyx", line 1518, in uvloop.loop.Loop.run_until_complete
    return future.result()
   File "/usr/local/lib/python3.10/dist-packages/uvicorn/workers.py", line 102, in _serve
     await server.serve(sockets=self.sockets)
           │      │             │    └ [<gunicorn.sock.TCPSocket object at 0x7f1d157451e0>]
           │      │             └ <uvicorn.workers.UvicornWorker object at 0x7f1d11c04ca0>
         │      └ <function Server.serve at 0x7f1d157956c0>
          └ <uvicorn.server.Server object at 0x7f1d11c04df0>
  File "/usr/local/lib/python3.10/dist-packages/uvicorn/server.py", line 69, in serve
     await self._serve(sockets)
         │    │      └ [<gunicorn.sock.TCPSocket object at 0x7f1d157451e0>]
          │    └ <function Server._serve at 0x7f1d15795750>
           └ <uvicorn.server.Server object at 0x7f1d11c04df0>
   File "/usr/local/lib/python3.10/dist-packages/uvicorn/server.py", line 76, in _serve
|     config.load()
    │      └ <function Config.load at 0x7f1d15748d30>
   └ <uvicorn.config.Config object at 0x7f1d11c04b50>
   File "/usr/local/lib/python3.10/dist-packages/uvicorn/config.py", line 399, in load
    assert self.ssl_certfile
           │    └ None
          └ <uvicorn.config.Config object at 0x7f1d11c04b50>
 AssertionError: assert self.ssl_certfile
 2024-10-29 11:54:36.124 | INFO     | gunicorn.glogging:info:277 - Worker exiting (pid: 97)

For me it looks like uvicorn worker are not taken the ssl_certfile from the gunicorn config, because the assert to ssl_certfile is None.
This is my logic to start the application
`python
class GunicornApplication(BaseApplication):
def init(self, app, options=None):
self.options = options or {}
self.application = app
super().init()

def load_config(self):
    config = {
        key: value
        for key, value in self.options.items()
        if key in self.cfg.settings and value is not None
    }
    for key, value in config.items():
        self.cfg.set(key.lower(), value)

def load(self):
    return self.application

def run_gunicorn_app():
logger.info("Starting gunicorn process...")
GunicornApplication(
app,
options={
"bind": f"{SETTINGS.gunicorn.app_host}:{SETTINGS.gunicorn.app_port}",
"loglevel": SETTINGS.gunicorn.log_level,
"reload": SETTINGS.gunicorn.reload,
"workers": SETTINGS.gunicorn.workers,
"threads": SETTINGS.gunicorn.threads,
"timeout": SETTINGS.gunicorn.timeout,
"preload": SETTINGS.gunicorn.preload,
"keyfile": SETTINGS.gunicorn.keyfile,
"certfile ": SETTINGS.gunicorn.certfile,
"accesslog": "-",
"errorlog": "-",
"worker_class": "uvicorn.workers.UvicornWorker",
"logger_class": CustomGunicornLogger,
},
).run()
`
I start the app with python3 main.py in a docker container. I can confirm that mounting the certs file is fine, because when I configure in SETTINGS.gunicorn.certfile with a wrong path, i recieve a file not found error from gunicorn .

uvicorn code where the assertions happens -> https://github.com/encode/uvicorn/blob/fe3910083e3990695bc19c2ef671dd447262ae18/uvicorn/config.py#L399

gunicorn ssl docs -> https://docs.gunicorn.org/en/stable/settings.html#certfile

I am using:

• uvicorn[standard]==0.32
• gunicorn==23.0
• fastapi==0.115

Someone facing the same problem?