smbprotocol.exceptions.InvalidParameter from ubuntu to synology nas

See original GitHub issue

I’ve been trying to connect to a smb share in python 3.10 from ubuntu 22.04 to my Synology NAS (DS218 on DSM 7.1.1-42962 Update 1) and I got this error with a simple test code:

smbprotocol.exceptions.InvalidParameter: Received unexpected status from the server: An invalid parameter was passed to a service or function. (3221225485) STATUS_INVALID_PARAMETER: 0xc000000d

import smbclient

path = "\\\\192.168.1.17\\music"

smbclient.ClientConfig(username="username", password="password")
smbclient.listdir(path=path)

I tried with a few variations in the path string, a raw string string, with and without the auth_protocol=“ntlm” param, with no better success.

Full traceback

/home/boris/back/venv/bin/python /home/boris/back/test.py 
Traceback (most recent call last):
  File "/home/boris/back/test.py", line 12, in <module>
    smbclient.listdir(path=path)
  File "/home/boris/back/venv/lib/python3.10/site-packages/smbclient/_os.py", line 239, in listdir
    with SMBDirectoryIO(path, mode='r', share_access='r', **kwargs) as dir_fd:
  File "/home/boris/back/venv/lib/python3.10/site-packages/smbclient/_io.py", line 377, in __init__
    tree, fd_path = get_smb_tree(path, **kwargs)
  File "/home/boris/back/venv/lib/python3.10/site-packages/smbclient/_pool.py", line 310, in get_smb_tree
    session = register_session(server, username=username, password=password, port=port, encrypt=encrypt,
  File "/home/boris/back/venv/lib/python3.10/site-packages/smbclient/_pool.py", line 374, in register_session
    connection.connect(timeout=connection_timeout)
  File "/home/boris/back/venv/lib/python3.10/site-packages/smbprotocol/connection.py", line 799, in connect
    smb_response = self._send_smb2_negotiate(dialect, timeout, enc_algos, sign_algos)
  File "/home/boris/back/venv/lib/python3.10/site-packages/smbprotocol/connection.py", line 1497, in _send_smb2_negotiate
    response = self.receive(request, timeout=timeout)
  File "/home/boris/back/venv/lib/python3.10/site-packages/smbprotocol/connection.py", line 1006, in receive
    raise SMBResponseException(response)
smbprotocol.exceptions.InvalidParameter: Received unexpected status from the server: An invalid parameter was passed to a service or function. (3221225485) STATUS_INVALID_PARAMETER: 0xc000000d

The SMB is configured on the NAS to accept SMB1, SMB2, SMB2 and Large MTU and SMB3, encryption is defined by the client.

Packages list on the venv

anyio==3.6.2
cffi==1.15.1
click==8.1.3
cryptography==38.0.3
dnspython==2.2.1
fastapi==0.75.2
h11==0.14.0
httptools==0.5.0
idna==3.4
motor==3.0.0
pycparser==2.21
pydantic==1.10.2
pymongo==4.3.2
pyspnego==0.6.2
python-dotenv==0.21.0
PyYAML==6.0
rarfile==4.0
smbprotocol==1.9.0
sniffio==1.3.0
starlette==0.17.1
typing_extensions==4.4.0
uvicorn==0.18.3
watchgod==0.8.2
websockets==10.4

I looked at issues #89 and #112 but I couldn’t find any fitting solution in them