Default ssh port is not selected when using dvc from command line

[martijnwgnr]

Executing dvc pull from the command line results in a KeyError. This seems to be introduced by commit e452803, which removes the default port. The issue only seems to arise when no port is specified when defining a remote:

['remote "share"']
    url = ssh://user@example.com/data/dvc/

Adding the default ssh port to the url fixes the issue:

['remote "share"']
    url = ssh://user@example.com:22/data/dvc/

The full error/traceback:

dvc pull -v
...
2025-02-06 10:04:42,914 ERROR: unexpected error - 'port'
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/dvc/cli/__init__.py", line 211, in main
    ret = cmd.do_run()
  File "/usr/local/lib/python3.10/site-packages/dvc/cli/command.py", line 27, in do_run
    return self.run()
  File "/usr/local/lib/python3.10/site-packages/dvc/commands/data_sync.py", line 35, in run
    stats = self.repo.pull(
  File "/usr/local/lib/python3.10/site-packages/dvc/repo/__init__.py", line 58, in wrapper
    return f(repo, *args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/dvc/repo/pull.py", line 30, in pull
    processed_files_count = self.fetch(
  File "/usr/local/lib/python3.10/site-packages/dvc/repo/__init__.py", line 58, in wrapper
    return f(repo, *args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/dvc/repo/fetch.py", line 184, in fetch
    fetch_transferred, fetch_failed = ifetch(
  File "/usr/local/lib/python3.10/site-packages/dvc_data/index/fetch.py", line 128, in fetch
    with closing(get_index(data.odb)) as src_index:
  File "/usr/local/lib/python3.10/site-packages/dvc_data/hashfile/db/__init__.py", line 46, in get_index
    hashlib.sha256(odb.fs.unstrip_protocol(odb.path).encode("utf-8")).hexdigest(),
  File "/usr/local/lib/python3.10/site-packages/dvc_ssh/__init__.py", line 44, in unstrip_protocol
    port = self.fs_args["port"]
KeyError: 'port'
2025-02-06 10:04:42,930 DEBUG: Version info for developers:
DVC version: 3.59.0 (pip)
-------------------------
Platform: Python 3.10.12 on Linux-5.4.0-174-generic-x86_64-with-glibc2.28
Subprojects:
	dvc_data = 3.16.9
	dvc_objects = 5.1.0
	dvc_render = 1.0.2
	dvc_task = 0.40.2
	scmrepo = 3.3.10
Supports:
	http (aiohttp = 3.11.12, aiohttp-retry = 2.9.1),
	https (aiohttp = 3.11.12, aiohttp-retry = 2.9.1),
	ssh (sshfs = 2025.2.0)
Config:
	Global: /root/.config/dvc
	System: /etc/xdg/dvc
Cache types: <https://error.dvc.org/no-dvc-cache>
Caches: local
Remotes: ssh
Workspace directory: ext4 on /dev/md2
Repo: dvc, git

Dependencies of interest:

dvc==3.59.0
dvc-data==3.16.9
dvc-http==2.32.0
dvc-objects==5.1.0
dvc-render==1.0.2
dvc-ssh==4.2.0
dvc-studio-client==0.21.0
dvc-task==0.40.2
asyncssh==2.19.0
sshfs==2025.2.0

[skshetry]

@martijnwgnr, do you have any Port set in ~/.ssh/config? asyncssh should already be using the default port if not set.

[martijnwgnr]

@skshetry No, I have not changed anything (the file does not even exist actually)

[skshetry]

I now see the bug, I'll create a patch quickly. :)

[skshetry]

Can you PTAL at #105 and see if it fixes the issue?

You can install as follows:

pip install "dvc-ssh @ git+https://github.com/iterative/dvc-ssh.git@fix-unstrip-protocol"

[martijnwgnr]

Works perfectly, thanks!