Fast-API Application deployment using Granian

[sreenivasulureddysura]

Trying to deploy the Fastapi application using the Granian in Linux environment. Is there a way i can bind the configuration like gunicorn -b unix:app.sock. Private network Proxy is failing. Facing the following issue:

/home/venv/bin/granian --interface asgi --host 0.0.0.0 --port 5015 --workers 4 --threads 4 --ssl-certificate /home/ssl/dev.com.crt --ssl-keyfile /home/ssl/dev.com.key main:app

Usage: granian [OPTIONS] APP
Try 'granian --help' for help.

[INFO] Starting granian (main PID: 76239)
[INFO] Listening at: https://0.0.0.0:5015
[INFO] Spawning worker-1 with pid: 76240

2024-07-30 06:30:08 | ERROR    | openid_config.py - Func: load_config-L00045 | Unable to fetch OpenID configuration from Azure AD. Error: Unknown scheme for proxy URL URL('socks://test.com:0009/')
Traceback (most recent call last):
  File "/home/venv/lib/python3.12/site-packages/fastapi_azure_auth/openid_config.py", line 42, in load_config
    await self._load_openid_config()
  File "/home/venv/lib/python3.12/site-packages/fastapi_azure_auth/openid_config.py", line 77, in _load_openid_config
    async with AsyncClient(timeout=10) as client:
               ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/venv/lib/python3.12/site-packages/httpx/_client.py", line 1424, in __init__
    proxy_map = self._get_proxy_map(proxies or proxy, allow_env_proxies)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/venv/lib/python3.12/site-packages/httpx/_client.py", line 218, in _get_proxy_map
    key: None if url is None else Proxy(url=url)
                                  ^^^^^^^^^^^^^^
  File "/home/venv/lib/python3.12/site-packages/httpx/_config.py", line 334, in __init__
    raise ValueError(f"Unknown scheme for proxy URL {url!r}")
ValueError: Unknown scheme for proxy URL URL('socks://test.com:0009/')
[ERROR] Traceback (most recent call last):
  File "/home/venv/lib/python3.12/site-packages/fastapi_azure_auth/openid_config.py", line 42, in load_config
    await self._load_openid_config()
  File "/home/venv/lib/python3.12/site-packages/fastapi_azure_auth/openid_config.py", line 77, in _load_openid_config
    async with AsyncClient(timeout=10) as client:
               ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/venv/lib/python3.12/site-packages/httpx/_client.py", line 1424, in __init__
    proxy_map = self._get_proxy_map(proxies or proxy, allow_env_proxies)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/venv/lib/python3.12/site-packages/httpx/_client.py", line 218, in _get_proxy_map
    key: None if url is None else Proxy(url=url)
                                  ^^^^^^^^^^^^^^
  File "/home/venv/lib/python3.12/site-packages/httpx/_config.py", line 334, in __init__
    raise ValueError(f"Unknown scheme for proxy URL {url!r}")
ValueError: Unknown scheme for proxy URL URL('socks://test.com:0009/')

[gi0baro]

There's already a feature request opened for unix socket binding: #97

The error log you reporting doesn't seem to be related to Granian though.

[sreenivasulureddysura]

@gi0baro it worked fine with gunicorn --bind socket. granian not able to bind the socket and private proxies causing the issues.

[gi0baro]

I don't understand the issue though.
If you change the address of the proxied target, you should update your code to proxy requests to the correct endpoint (eg: from socks://whatever to http://address:port).

[sreenivasulureddysura]

@gi0baro socket binding will take care of the proxies. I do not need to add separately the proxies information.

[gi0baro]

Then again, you need to wait for #97

[sreenivasulureddysura]

@gi0baro when that PR will be ready?