ERROR:: Invalid SSL certificate with letsencrypt

Hi,

I am trying to remotely connect to an Emby instance via an Apache2-SSL-proxy. The Apache2 server with letsencrypt gets an A+ rating from Qualys, and another Kodi 16 instance can successfully connect.

Now, I am trying to setup Kodi 17 with the Emby addon beta.

– Login issues to the server where solved with pip updating “requests” from minor version 10 to 13

I am still stuck with more or less randomly (but most of the time) showing the following errors:

Code:
23:36:24.651 T:140640650262272  NOTICE: EMBY.default_movies -> Parameter string: ?dbid=57&mode=play&id=b909fe8ad4b55d2a5ffc91a628e382fa&filename=MyMovie.2016..BluRay..mkv
23:36:24.704 T:140640650262272  NOTICE: EMBY.downloadutils -> ERROR:: Invalid SSL certificate for: https://emby.example.net:443/emby/Users/someid/Items/someid?format=json
23:36:24.706 T:140640650262272   ERROR: EXCEPTION Thrown (PythonToCppException) : -->Python callback/script returned the following error<--
                                             - NOTE: IGNORING THIS CAN LEAD TO MEMORY LEAKS!
                                            Error Type: <class 'requests.exceptions.SSLError'>
                                            Error Contents: ('bad handshake: SysCallError(0, None)',)
                                            Traceback (most recent call last):
                                              File "/home/examplemyuser/.kodi/addons/plugin.video.emby.movies/default.py", line 50, in <module>
                                                entrypoint.doPlayback(itemid, dbid)
                                              File "/home/myuser/.kodi/addons/plugin.video.emby/resources/lib/entrypoint.py", line 45, in doPlayback
                                                item = emby.getItem(itemId)
                                              File "/home/myuser/.kodi/addons/plugin.video.emby/resources/lib/read_embyserver.py", line 113, in getItem
                                                item = self.doUtils.downloadUrl("{server}/emby/Users/{UserId}/Items/%s?format=json" % itemid)
                                              File "/home/myuser/.kodi/addons/plugin.video.emby/resources/lib/downloadutils.py", line 259, in downloadUrl
                                                response = self._requests(action_type, session, **kwargs)
                                              File "/home/myuser/.kodi/addons/plugin.video.emby/resources/lib/downloadutils.py", line 380, in _requests
                                                response = session.get(**kwargs)
                                              File "/home/myuser/.kodi/addons/script.module.requests/lib/requests/api.py", line 70, in get
                                                return request('get', url, params=params, **kwargs)
                                              File "/home/myuser/.kodi/addons/script.module.requests/lib/requests/api.py", line 56, in request
                                                return session.request(method=method, url=url, **kwargs)
                                              File "/home/myuser/.kodi/addons/script.module.requests/lib/requests/sessions.py", line 488, in request
                                                resp = self.send(prep, **send_kwargs)
                                              File "/home/myuser/.kodi/addons/script.module.requests/lib/requests/sessions.py", line 609, in send
                                                r = adapter.send(request, **kwargs)
                                              File "/home/myuser/.kodi/addons/script.module.requests/lib/requests/adapters.py", line 497, in send
                                                raise SSLError(e, request=request)
                                            SSLError: ('bad handshake: SysCallError(0, None)',)
                                            -->End of Python script error report<--
23:36:24.737 T:140640650262272 WARNING: CPythonInvoker(6, /home/myuser/.kodi/addons/plugin.video.emby.movies/default.py): the python script "/home/myuser/.kodi/addons/plugin.video.emby.movies/default.py" has left several classes in memory that we couldn't clean up. The classes include: N9XBMCAddon9xbmcaddon5AddonE
23:36:24.749 T:140643334241792   ERROR: PlayMedia could not play media: plugin://plugin.video.emby.movies/?dbid=57&mode=play&id=someid&filename=MyMovie.2016..BluRay..mkv

and

Code:
23:50:58.004 T:140342919374592  NOTICE: Creating InputStream
23:50:58.183 T:140342919374592   ERROR: CCurlFile::FillBuffer - Failed: SSL connect error(35)
23:50:58.183 T:140342919374592   ERROR: CCurlFile::Open failed with code 0 for https://emby.example.net:443/emby/Videos/someid/stream?static=true
23:50:58.184 T:140342919374592   ERROR: Open - failed to open source <https://emby.example.net:443/emby/Videos/someid/stream?static=true>
23:50:58.184 T:140342919374592   ERROR: CVideoPlayer::OpenInputStream - error opening [https://emby.example.net:443/emby/Videos/someid/stream?static=true]
23:50:58.184 T:140342919374592  NOTICE: CVideoPlayer::OnExit()
23:50:58.184 T:140345424244224   ERROR: Playlist Player: skipping unplayable item: 1, path [plugin://plugin.video.emby.tvshows/someid/?dbid=296&mode=play&id=someid&filename=MyOtherTVSeries.mkv]

I cannot really make out a scheme when what happens.

I think maybe forcing the connections to IPv4 with an /etc/hosts entry did something (since then, most of the thumbnails show up), but I am not sure.

Any ideas about this? As I said, it is working with Kodi 16 and the Emby stable, but from the trace, it seems to be a kodi issue if I am not wrong.