KeyError: 'content-type'

[Xpunk]

Hi, there is an issue with 'content-type' not well managed:

To reproduce the issue based on this IGN url to get capabalities :
https://data.geopf.fr/wfs/wfs?SERVICE=WFS&VERSION=2.0.0&REQUEST=GETCAPABILITIES

Script :

from owslib.wfs import WebFeatureService
wfs = WebFeatureService(url='https://data.geopf.fr/wfs/wfs', version='2.0.0')
schema = wfs.get_schema('BDTOPO_V3:piste_d_aerodrome')
print(schema['geometry_column'])

Env + libs used :

python 3.11.9
OWSLib 0.32.0 / 0.32.1
requests 2.32.3

Error :

Traceback (most recent call last):
File "my_project_path\test_owslib.py", line 2, in
wfs = WebFeatureService(url='https://data.geopf.fr/wfs/wfs', version='2.0.0')
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "my_project_path\.venv\Lib\site-packages\owslib\wfs.py", line 56, in WebFeatureService
return wfs200.WebFeatureService_2_0_0(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "my_project_path\.venv\Lib\site-packages\owslib\feature\wfs200.py", line 77, in new
obj.init(
File "my_project_path\.venv\Lib\site-packages\owslib\feature\wfs200.py", line 128, in init
self._capabilities = reader.read(self.url, self.timeout)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "my_project_path\.venv\Lib\site-packages\owslib\feature\common.py", line 55, in read
return getXMLTree(u)
^^^^^^^^^^^^^
File "my_project_path\.venv\Lib\site-packages\owslib\util.py", line 345, in getXMLTree
content_type = rsp.info()['Content-Type']
~~~~~~~~~~^^^^^^^^^^^^^^^^
File "my_project_path\.venv\Lib\site-packages\requests\structures.py", line 52, in getitem
return self._store[key.lower()][1]
~~~~~~~~~~~^^^^^^^^^^^^^
KeyError: 'content-type'

[bbrangeo]

Same for me

[geographika]

Fixed with #977