WLED: Service error in Home Assistant if more than 2 segments are added

What happened?

On version wled 0.14, when adding more than 2 segments to the home assistant while turning on the segments, a service error appears (Could not call the light/turn_on service. unexpected character: line 1 column 851 (char 850)

To Reproduce Bug

Add more than 2 segments

Expected Behavior

Operation of more segments

Install Method

Binary from WLED.me

What version of WLED?

WLED 0.14.0

Which microcontroller/board are you seeing the problem on?

ESP8266

Relevant log/trace output

Logger: homeassistant.components.websocket_api.http.connection
Source: components/websocket_api/commands.py:226
Integration: Home Assistant WebSocket API (documentation, issues)
First occurred: 21:43:25 (46 occurrences)
Last logged: 22:44:35

[139642857590848] invalid literal: line 1 column 854 (char 853)
[139642857590848] unexpected character: line 1 column 855 (char 854)
[139642117643584] unexpected end of data: line 1 column 1097 (char 1096)
[139642117643584] unexpected character: line 1 column 852 (char 851)
[139642130458816] unexpected character: line 1 column 851 (char 850)
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py", line 226, in handle_call_service
    await hass.services.async_call(
  File "/usr/src/homeassistant/homeassistant/core.py", line 2012, in async_call
    response_data = await coro
                    ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2049, in _execute_service
    return await target(service_call)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 235, in handle_service
    return await service.entity_service_call(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 876, in entity_service_call
    response_data = await _handle_entity_call(
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 948, in _handle_entity_call
    result = await task
             ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/light/__init__.py", line 591, in async_handle_light_off_service
    await light.async_turn_off(**filter_turn_off_params(light, params))
  File "/usr/src/homeassistant/homeassistant/components/wled/helpers.py", line 28, in handler
    await func(self, *args, **kwargs)
  File "/usr/src/homeassistant/homeassistant/components/wled/light.py", line 208, in async_turn_off
    await self.coordinator.wled.segment(
  File "/usr/local/lib/python3.11/site-packages/wled/wled.py", line 515, in segment
    await self.request("/json/state", method="POST", data=state)
  File "/usr/local/lib/python3.11/site-packages/backoff/_async.py", line 151, in retry
    ret = await target(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/wled/wled.py", line 211, in request
    response_data = await response.json()
                    ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/aiohttp_client.py", line 72, in json
    return await super().json(*args, loads=loads, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/aiohttp/client_reqrep.py", line 1120, in json
    return loads(stripped.decode(encoding))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
orjson.JSONDecodeError: unexpected character: line 1 column 851 (char 850)

Anything else?

Sorry if the text looks stupid, I wrote it through a translator

Code of Conduct

I agree to follow this project’s Code of Conduct

About this issue

Original URL
State: open
Created 8 months ago
Comments: 18

Most upvoted comments

Please try 0_15 branch.

peter@syracuse:~/WLED$ curl -D - -s -H 'Content-Type: application/json' -X POST http://192.168.1.240/json/state -d '{"seg":[{"bri":161,"on":true,"id":2}],"v":true}'
HTTP/1.1 200 OK
Content-Length: 1616
Content-Type: application/json
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: *
Access-Control-Allow-Headers: *
Connection: close
Accept-Ranges: none

{"on":true,"bri":128,"transition":7,"ps":-1,"pl":-1,"nl":{"on":false,"dur":60,"mode":1,"tbri":0,"rem":-1},"udpn":{"send":false,"recv":true,"sgrp":1,"rgrp":1},"lor":0,"mainseg":0,"seg":[{"id":0,"start":0,"stop":8,"len":8,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"set":0,"col":[[255,160,0],[0,0,0],[0,0,0]],"fx":0,"sx":128,"ix":128,"pal":0,"c1":128,"c2":128,"c3":16,"sel":true,"rev":false,"mi":false,"o1":false,"o2":false,"o3":false,"si":0,"m12":0},{"id":1,"start":0,"stop":2,"len":2,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"set":0,"col":[[255,170,0],[0,0,0],[0,0,0]],"fx":0,"sx":128,"ix":128,"pal":0,"c1":128,"c2":128,"c3":16,"sel":true,"rev":false,"mi":false,"o1":false,"o2":false,"o3":false,"si":0,"m12":0},{"id":2,"start":2,"stop":4,"len":2,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":161,"cct":127,"set":0,"col":[[255,170,0],[0,0,0],[0,0,0]],"fx":0,"sx":128,"ix":128,"pal":0,"c1":128,"c2":128,"c3":16,"sel":true,"rev":false,"mi":false,"o1":false,"o2":false,"o3":false,"si":0,"m12":0},{"id":3,"start":4,"stop":6,"len":2,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"set":0,"col":[[255,170,0],[0,0,0],[0,0,0]],"fx":0,"sx":128,"ix":128,"pal":0,"c1":128,"c2":128,"c3":16,"sel":true,"rev":false,"mi":false,"o1":false,"o2":false,"o3":false,"si":0,"m12":0},{"id":4,"start":6,"stop":8,"len":2,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"set":0,"col":[[255,170,0],[0,0,0],[0,0,0]],"fx":0,"sx":128,"ix":128,"pal":0,"c1":128,"c2":128,"c3":16,"sel":true,"rev":false,"mi":false,"o1":false,"o2":false,"o3":false,"si":0,"m12":0}]}

and HA seems happy too 😃

Habbie on Oct 27, 2023

Hi, i have the same problem since updated to wled 0.14 and using Homeassistant. I did some wireshark dumps and it seems that the JSON-Response from the wled-device ist not complete. The json in the response from the wled device is not closed properly.

Example: HomeAssistant turns off a WLED Device with 0.14 with 4 Segments:

POST /json/state HTTP/1.1
Host: 192.168.179.172
User-Agent: HomeAssistant/2023.9.3 aiohttp/3.8.5 Python/3.11
Accept: application/json, text/plain, */*
Accept-Encoding: gzip, deflate
Content-Length: 21
Content-Type: application/json

{"on":false,"v":true}HTTP/1.1 200 OK
Content-Length: 1436
Content-Type: application/json
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: *
Access-Control-Allow-Headers: *
Connection: close
Accept-Ranges: none

{"on":false,"bri":81,"transition":7,"ps":-1,"pl":-1,"nl":{"on":false,"dur":60,"mode":1,"tbri":0,"rem":-1},"udpn":{"send":false,"recv":true,"sgrp":1,"rgrp":1},"lor":0,"mainseg":0,"seg":[{"id":0,"start":0,"stop":28,"len":28,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"set":0,"n":"unten","col":[[255,234,219,226],[0,0,0,0],[0,0,0,0]],"fx":97,"sx":255,"ix":225,"pal":32,"c1":128,"c2":128,"c3":16,"sel":true,"rev":false,"mi":true,"o1":false,"o2":false,"o3":false,"si":0,"m12":0},{"id":1,"start":28,"stop":76,"len":48,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"set":0,"n":"rechts","col":[[255,234,219,226],[0,0,0,0],[0,0,0,0]],"fx":97,"sx":255,"ix":225,"pal":32,"c1":128,"c2":128,"c3":16,"sel":true,"rev":false,"mi":true,"o1":false,"o2":false,"o3":false,"si":0,"m12":0},{"id":2,"start":76,"stop":104,"len":28,"grp":1,"spc"":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"set":0,"n":"oben","col":[[255,234,219,226],[0,0,0,0],[0,0,0,0]],"fx":97,"sx":255,"ix":225,"pal":32,"c1":128,"c2":128,"c3":16,"sel":true,"rev":false,"mi":true,"o1":false,"o2":false,"o3":false,"si":0,"m12":0},{"id":3,"start":104,"stop":152,"len":48,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"set":0,"n":"links","col":[[255,234,219,226],[0,0,0,0],[0,0,0,0]],"fx":97,"sx":255,"ix":225,"pal":32,"c1":128,"c2":128,"c3":16,"sel":true,"rev":false,"mi":true,"o1":false,"o2":false,"o3":false,"si":0,"

As you can see there is no proper closing of the json-string in the response of the wled-device which I think leads to the error messages in Home Assistant beause it is not a valid json response which gets parsed in Home Assistant.

Example of a WLED Device with one segment and version 0.13.3 which does not generate error messages in Home Assistant:

POST /json/state HTTP/1.1
Host: 192.168.179.142
User-Agent: HomeAssistant/2023.9.3 aiohttp/3.8.5 Python/3.11
Accept: application/json, text/plain, */*
Accept-Encoding: gzip, deflate
Content-Length: 37
Content-Type: application/json

{"seg":[{"on":true,"id":0}],"v":true}HTTP/1.1 200 OK
Content-Length: 379
Content-Type: application/json
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: *
Access-Control-Allow-Headers: *
Connection: close
Accept-Ranges: none

{"on":false,"bri":255,"transition":7,"ps":16,"pl":-1,"nl":{"on":false,"dur":60,"mode":1,"tbri":0,"rem":-1},"udpn":{"send":false,"recv":false},"lor":0,"mainseg":0,"seg":[{"id":0,"start":0,"stop":150,"len":150,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"col":[[255,183,74],[0,0,0],[0,0,0]],"fx":0,"sx":128,"ix":128,"pal":0,"sel":true,"rev":false,"mi":false}]}

Here the json in the response is valid.

Hope that helps for further debugging…

Regards saruter

saruter on Oct 20, 2023

Is the workaround/solution at this point to build from the 0.15 branch? Thanks.

rubin110 on Dec 2, 2023

Please try 0_15 branch.

blazoncek on Oct 27, 2023

It looks like the JSON really is bigger, and hits some size limit?

Habbie on Oct 27, 2023

0.13.3:

peter@syracuse:~$ curl -D - -s -H 'Content-Type: application/json' -X POST http://192.168.1.240/json/state -d '{"seg":[{"bri":161,"on":true,"id":2}],"v":true}'
HTTP/1.1 200 OK
Content-Length: 1183
Content-Type: application/json
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: *
Access-Control-Allow-Headers: *
Connection: close
Accept-Ranges: none

{"on":true,"bri":128,"transition":7,"ps":-1,"pl":-1,"nl":{"on":false,"dur":60,"mode":1,"tbri":0,"rem":-1},"udpn":{"send":false,"recv":true},"lor":0,"mainseg":3,"seg":[{"id":0,"start":0,"stop":8,"len":8,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"col":[[255,0,0],[0,0,0],[0,0,0]],"fx":0,"sx":128,"ix":128,"pal":0,"sel":false,"rev":false,"mi":false},{"id":1,"start":0,"stop":2,"len":2,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"col":[[0,0,255],[0,0,0],[0,0,0]],"fx":0,"sx":128,"ix":128,"pal":0,"sel":false,"rev":false,"mi":false},{"id":2,"start":2,"stop":4,"len":2,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":161,"cct":127,"col":[[8,255,0],[0,0,0],[0,0,0]],"fx":0,"sx":128,"ix":128,"pal":0,"sel":false,"rev":false,"mi":false},{"id":3,"start":4,"stop":6,"len":2,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"col":[[47,255,0],[0,0,0],[0,0,0]],"fx":0,"sx":128,"ix":128,"pal":0,"sel":true,"rev":false,"mi":false},{"id":4,"start":6,"stop":8,"len":2,"grp":1,"spc":0,"of":0,"on":true,"frz":false,"bri":255,"cct":127,"col":[[255,0,0],[0,0,0],[0,0,0]],"fx":0,"sx":128,"ix":128,"pal":0,"sel":false,"rev":false,"mi":false}]}peter@syracuse:~$

Habbie on Oct 27, 2023