request headers unexpected behaviour

[santibreo]

Hi!

I am trying to test an API with the following code:

from starlette.requests import Request

key = 'Authorization'
request =  Request(scope={'type': 'http', 'headers': [(key.encode(), b'Bearer token')]})
request.headers
# Output:
# Headers({'Authorization': 'Bearer token'})

request.headers.get(key)
# Output:
# None

[k for k in request.headers][0] == key
# Output:
# True

dict(request.headers.items()).get(key)
# Output:
# 'Bearer token'

Is this behaviour expected?
I am unable to understand why I cannot retrieve the header from request.headers as I am able to do when I coerce them to standard dictionary.

I am using starlette version 0.46.2

Any help is welcome 🙂

[santibreo]

It is because header key must be lowercased 🙈