fix compatibility with sogo

[LU-386]

Hey Lukasz,

I had a problem with compatibility with sogo. To fix the issue, just remove the following lines below from carddav.py. I could not find a problem with this fix so far or any advantage of those lines so far (compatibility with baikal and sogo tested).

if response.headers['DAV'].count('addressbook') == 0:
    raise Exception("URL is not a CardDAV resource")

[ljanyst]

Thanks for the report!

This seems like a useful check though. Can you submit the PR where this check is omitted for sogo? The server software name is usually somewhere in the response headers.

[LU-386]

You're welcome!

I don't know which variable to use, the one the condition is asking for is not present. Below is an object-dump created with the following lines in carddav.py:

264         raise_for_status( response )
265        
266         for attr in dir(response.headers):
267             print("obj.%s = %r" % (attr, getattr(response.headers, attr)))

obj._MutableMapping__marker = <object object at 0x7f66cfddc180>
obj.__abstractmethods__ = frozenset()
obj.__class__ = <class 'requests.structures.CaseInsensitiveDict'>
obj.__class_getitem__ = <bound method GenericAlias of <class 'requests.structures.CaseInsensitiveDict'>>
obj.__contains__ = <bound method Mapping.__contains__ of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.__delattr__ = <method-wrapper '__delattr__' of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__delitem__ = <bound method CaseInsensitiveDict.__delitem__ of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.__dict__ = {'_store': OrderedDict([('server', ('Server', 'nginx')), ('date', ('Date', 'Sun, 25 Sep 2022 08:01:05 GMT')), ('content-type', ('Content-Type', 'text/xml; charset=utf-8')), ('content-length', ('Content-Length', '111062')), ('connection', ('Connection', 'keep-alive')), ('x-dav-error', ('X-Dav-Error', '200 No error')), ('ms-author-via', ('Ms-Author-Via', 'DAV')), ('pragma', ('Pragma', 'no-cache')), ('content-encoding', ('Content-Encoding', 'gzip')), ('cache-control', ('Cache-Control', 'no-cache')), ('x-frame-options', ('X-Frame-Options', 'SAMEORIGIN'))])}
obj.__dir__ = <built-in method __dir__ of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__doc__ = "A case-insensitive ``dict``-like object.\n\n    Implements all methods and operations of\n    ``MutableMapping`` as well as dict's ``copy``. Also\n    provides ``lower_items``.\n\n    All keys are expected to be strings. The structure remembers the\n    case of the last key to be set, and ``iter(instance)``,\n    ``keys()``, ``items()``, ``iterkeys()``, and ``iteritems()``\n    will contain case-sensitive keys. However, querying and contains\n    testing is case insensitive::\n\n        cid = CaseInsensitiveDict()\n        cid['Accept'] = 'application/json'\n        cid['aCCEPT'] == 'application/json'  # True\n        list(cid) == ['Accept']  # True\n\n    For example, ``headers['content-encoding']`` will return the\n    value of a ``'Content-Encoding'`` response header, regardless\n    of how the header name was originally stored.\n\n    If the constructor, ``.update``, or equality comparison\n    operations are given keys that have equal ``.lower()``s, the\n    behavior is undefined.\n    "
obj.__eq__ = <bound method CaseInsensitiveDict.__eq__ of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.__format__ = <built-in method __format__ of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__ge__ = <method-wrapper '__ge__' of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__getattribute__ = <method-wrapper '__getattribute__' of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__getitem__ = <bound method CaseInsensitiveDict.__getitem__ of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.__gt__ = <method-wrapper '__gt__' of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__hash__ = None
obj.__init__ = <bound method CaseInsensitiveDict.__init__ of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.__init_subclass__ = <built-in method __init_subclass__ of ABCMeta object at 0x5634b8d84c70>
obj.__iter__ = <bound method CaseInsensitiveDict.__iter__ of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.__le__ = <method-wrapper '__le__' of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__len__ = <bound method CaseInsensitiveDict.__len__ of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.__lt__ = <method-wrapper '__lt__' of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__module__ = 'requests.structures'
obj.__ne__ = <method-wrapper '__ne__' of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__new__ = <built-in method __new__ of type object at 0x7f66d0596d60>
obj.__reduce__ = <built-in method __reduce__ of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__reduce_ex__ = <built-in method __reduce_ex__ of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__repr__ = <bound method CaseInsensitiveDict.__repr__ of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.__reversed__ = None
obj.__setattr__ = <method-wrapper '__setattr__' of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__setitem__ = <bound method CaseInsensitiveDict.__setitem__ of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.__sizeof__ = <built-in method __sizeof__ of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__slots__ = ()
obj.__str__ = <method-wrapper '__str__' of CaseInsensitiveDict object at 0x7f66ce4ab160>
obj.__subclasshook__ = <bound method Collection.__subclasshook__ of <class 'requests.structures.CaseInsensitiveDict'>>
obj.__weakref__ = None
obj._abc_impl = <_abc._abc_data object at 0x7f66ceff5c40>
obj._store = OrderedDict([('server', ('Server', 'nginx')), ('date', ('Date', 'Sun, 25 Sep 2022 08:01:05 GMT')), ('content-type', ('Content-Type', 'text/xml; charset=utf-8')), ('content-length', ('Content-Length', '111062')), ('connection', ('Connection', 'keep-alive')), ('x-dav-error', ('X-Dav-Error', '200 No error')), ('ms-author-via', ('Ms-Author-Via', 'DAV')), ('pragma', ('Pragma', 'no-cache')), ('content-encoding', ('Content-Encoding', 'gzip')), ('cache-control', ('Cache-Control', 'no-cache')), ('x-frame-options', ('X-Frame-Options', 'SAMEORIGIN'))])
obj.clear = <bound method MutableMapping.clear of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.copy = <bound method CaseInsensitiveDict.copy of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.get = <bound method Mapping.get of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.items = <bound method Mapping.items of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.keys = <bound method Mapping.keys of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.lower_items = <bound method CaseInsensitiveDict.lower_items of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.pop = <bound method MutableMapping.pop of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.popitem = <bound method MutableMapping.popitem of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.setdefault = <bound method MutableMapping.setdefault of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.update = <bound method MutableMapping.update of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>
obj.values = <bound method Mapping.values of {'Server': 'nginx', 'Date': 'Sun, 25 Sep 2022 08:01:05 GMT', 'Content-Type': 'text/xml; charset=utf-8', 'Content-Length': '111062', 'Connection': 'keep-alive', 'X-Dav-Error': '200 No error', 'Ms-Author-Via': 'DAV', 'Pragma': 'no-cache', 'Content-Encoding': 'gzip', 'Cache-Control': 'no-cache', 'X-Frame-Options': 'SAMEORIGIN'}>

Could you maybe provide a header dump from another system to look for similarities? (btw your script works great!)