yunmai.scales.ms104 xiaomihome source fails in 0.4.2 in Docker and HA add-on

[ckoc76]

Problem

from: xiaomihome ... fails for my Xiaomi S400 EU scale (yunmai.scales.ms104) with:
load data error: Get "": unsupported protocol scheme ""

The same error happens:

in the Home Assistant add-on
and in Docker on a separate VM
So this does not look like a Home Assistant webhook issue. The destination works. The failure seems to happen while loading data from xiaomihome.

### Environment
SmartScaleConnect version: 0.4.2
Scale model: yunmai.scales.ms104
Scale/app: Xiaomi Home
Regions tested: ru, de
Home Assistant: current version in April 2026
Docker: Docker version 20.10.24+dfsg1
Docker Compose: v2.5.0
Timezone: Europe/Berlin

### What works
Home Assistant destination works
This config successfully sends test data to Home Assistant:

sync_test:
  from:
    Weight: 82.4
    BMI: 24.1
    BodyFat: 18.2
  to: json/latest http://homeassistant.local:8123/api/webhook/REDACTED

Result:

log shows sync_test: OK
Home Assistant receives the webhook
the automation runs correctly
Received payload in Home Assistant:

{
  "Date": "2026-04-06T22:06:06.497965262+02:00",
  "Weight": 82.4,
  "BMI": 24.1,
  "BodyFat": 18.2
}

So to: json/latest http://... works.

What fails

Docker
Docker compose:

services:
  scaleconnect:
    image: alexxit/smartscaleconnect:latest
    container_name: scaleconnect
    restart: unless-stopped
    environment:
      - TZ=Europe/Berlin
    volumes:
      - /root/scaleconnect:/config

Config:

sync_hass:
  from: xiaomihome my_email my_password ru yunmai.scales.ms104
  to: json/latest http://homeassistant.local:8123/api/webhook/REDACTED

Log:

2026/04/06 22:03:17 scaleconnect version 0.4.2
2026/04/06 22:03:17 sync_hass: load data error: Get "": unsupported protocol scheme ""

Same with de region:

2026/04/06 21:43:34 scaleconnect version 0.4.2
2026/04/06 21:43:34 sync_hass: load data error: Get "": unsupported protocol scheme ""
Docker test with CSV instead of webhook
This also fails with the same error:

sync_test:
  from: xiaomihome my_email my_password ru yunmai.scales.ms104
  to: csv /config/test.csv

Result:

same error
no CSV file created
This suggests the problem is in from: xiaomihome ..., not in the destination.

Home Assistant add-on
Tested via hassio.addon_stdin:

action: hassio.addon_stdin
data:
  addon: a889bffc_scaleconnect
  input:
    sync_hass:
      from: "xiaomihome my_email my_password ru yunmai.scales.ms104"
      to: "json/latest http://homeassistant.local:8123/api/webhook/REDACTED"

Result:

same unsupported protocol scheme "" error

Additional note

The README explicitly lists yunmai.scales.ms104 as supported via:

from: xiaomihome {username} {password} ru yunmai.scales.ms104
I also found issue #21, which looks related to Home Assistant/add-on input handling, but in my case the same problem is reproducible in Docker, so it looks broader than only HA add-on parsing.

Also, the Home Assistant custom integration hass-xiaomi-miot is able to handle Xiaomi account security verification / login flow much better in practice. It may be useful as a reference for Xiaomi authentication/session handling:
https://github.com/al-one/hass-xiaomi-miot

Question

Is this a known regression in the xiaomihome source implementation in 0.4.2?

If needed, I can test a debug build or provide additional logs.

All the best,
cK

PS: This may be related to PR #20:
#20

The PR description explicitly mentions:

• Xiaomi 2FA auth logic
• "Sync setup fails with unclear 'unsupported protocol scheme' error"

That seems very close to my case with xiaomihome ... yunmai.scales.ms104.

[ckoc76]

I think PR #20 is likely the solution.

With the PR image, the previous unsupported protocol scheme error is gone, and I now get a real Xiaomi auth/2FA response instead:

xiaomi: {"code":70022,"desc":"发送验证码失败","tips":"Zu viele Codes gesendet. Versuche es morgen noch einmal."}

Good night,
cK

[ckoc76]

Positive update: I got it working with the PR #20 test image.

What worked:

• Docker image: slfdstrctd/smartscaleconnect:latest
• interactive first run to complete Xiaomi verification
• this created scaleconnect.json
• after that, normal docker compose up -d works

Current result:

scaleconnect version 0.4.2
sync_hass: OK
The webhook data now arrives correctly in Home Assistant and updates my entities:

weight
BMI
body fat

So PR #20 seems to fix the original unsupported protocol scheme "" problem for my case.

Good night,
cK