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EOFError: Unexpected end of stream. #17
Description
Hi,
thank you for the library.
Each time when I switch on my treadmill and try to connect I get the EOFError. I need to start and stop the treadmill, than it connects.
Connection to TREADMILL: name: Domyos-TC-0278, address: D8:2F:1B:52:90:04
Traceback (most recent call last):
File "/home/johannes/blebridge/blebridge/test.py", line 35, in <module>
asyncio.run(run())
File "/usr/lib/python3.12/asyncio/runners.py", line 194, in run
return runner.run(main)
^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/asyncio/runners.py", line 118, in run
return self._loop.run_until_complete(task)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/asyncio/base_events.py", line 687, in run_until_complete
return future.result()
^^^^^^^^^^^^^^^
File "/home/johannes/blebridge/blebridge/test.py", line 26, in run
async with get_client(dev, machine_type) as c:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/johannes/blebridge/blebridge/.venv/lib/python3.12/site-packages/pyftms/client/client.py", line 105, in __aenter__
await self.connect()
File "/home/johannes/blebridge/blebridge/.venv/lib/python3.12/site-packages/pyftms/client/client.py", line 159, in connect
await self._connect()
File "/home/johannes/blebridge/blebridge/.venv/lib/python3.12/site-packages/pyftms/client/client.py", line 257, in _connect
await self._controller.subscribe(self._cli)
File "/home/johannes/blebridge/blebridge/.venv/lib/python3.12/site-packages/pyftms/client/backends/controller.py", line 109, in subscribe
self._on_training_status(c, await cli.read_gatt_char(c))
File "/home/johannes/blebridge/blebridge/.venv/lib/python3.12/site-packages/pyftms/client/backends/controller.py", line 255, in _on_training_status
status = TrainingStatusModel._deserialize(bio)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/johannes/blebridge/blebridge/.venv/lib/python3.12/site-packages/pyftms/serializer/model.py", line 141, in _deserialize
return cls(**cls._deserialize_asdict(src))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/johannes/blebridge/blebridge/.venv/lib/python3.12/site-packages/pyftms/serializer/model.py", line 123, in _deserialize_asdict
value, type_ = serializer._deserialize(src), field.type
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/johannes/blebridge/blebridge/.venv/lib/python3.12/site-packages/pyftms/serializer/num.py", line 56, in _deserialize
raise EOFError("Unexpected end of stream.")
EOFError: Unexpected end of stream.
Activity
basvd commentedon Sep 6, 2025
I ran into a similar issue with the TrainingStatusModel deserialization. In my case it's a rower, but I think the problem is the same. Instead of receiving two bytes of data for the training status, I get only one byte.
A possible workaround is to simply zero the data instead of raising an error, by changing line 61 in
serializer/num.py:From what I've read, FTMS is not fully implemented by multiple machines out there, so it might be a good idea to make this library more fault-tolerant.
chkuendig commentedon Jan 29, 2026
I had the same issue with my Sole F65, might be worth trying out if #54 also fixes your issue.