can't handle event type ConnectionClosed when role=SERVER and state=SEND_RESPONSE

[FransHalsjes]

The problem

The rest integration stops with the error:

Error fetching data: http://IP_ADDRESS/get-status failed with "can't handle event type ConnectionClosed when role=SERVER and state=SEND_RESPONSE"

Logger: homeassistant.components.rest.data
Source: components/rest/data.py:63
Integration: rest (documentation, issues)

issuing the command in a browser gives back a proper JSON string. The rest call works

Environment

Version	0.118.0
Installation Type	Home Assistant OS
Development	false
Supervisor	true
Docker	true
Virtual Environment	false
Python Version	3.8.6
Operating System Family	Linux
Operating System Version	4.19.127-v8
CPU Architecture	aarch64
Timezone	Europe/Amsterdam

• Home Assistant Core release with the issue:
• Last working Home Assistant Core release (if known):
• Operating environment (OS/Container/Supervised/Core):
• Integration causing this issue:
• Link to integration documentation on our website:

Problem-relevant configuration.yaml

configuration.yaml

• platform: rest
  name: achterpui_temperatuur
  resource: http://IP_ADDRESS/PASSWORD/get-status
  value_template: "{{ value_json.response.thermometers[0].te }}"
  unit_of_measurement: '°C'

Traceback/Error logs

Additional information

[elupus]

The issue is likely in upstream httpx library. Would you be able to try to reproduce this with pure python and the httpx library? It should be reported upstream very likely.

[FransHalsjes]

Would love to do that, but have no idea how. Can you give some instructions?

[elupus]

Hmm. This looks very similar to: encode/httpx#96

[FransHalsjes]

I see. Wait for an answer in that thread? Op vr 20 nov. 2020 om 09:13 schreef Joakim Plate <notifications@github.com>:

…

Hmm. This looks very similar to: encode/httpx#96 <encode/httpx#96> — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#43384 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQWDH5JOKSFUA5RUT3JL5J3SQYQMLANCNFSM4T3FUEOQ> .

[probot-home-assistant]

rest documentation
rest source
_{^{(message by IssueLinks)}}

[FransHalsjes]

ehh.. I am quite a newbie here. have no idea what to do with these links... Op vr 20 nov. 2020 om 16:19 schreef probot-home-assistant[bot] < notifications@github.com>:

…

rest documentation <https://www.home-assistant.io/integrations/rest> rest source <https://github.com/home-assistant/core/tree/dev/homeassistant/components/rest> (message by IssueLinks) — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#43384 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQWDH5LUUVOZDHDV7JPQF2DSQ2CG5ANCNFSM4T3FUEOQ> .

[FransHalsjes]

problem solved!
I had 4 sensors, all querying the same server with the REST call above. That was too much for the server, so it gave the error above.
I restructured the configuration.yaml to have 1 REST call and then have the sensors created via a template:

# Home Wizard koppeling
- platform: rest
  name: hwdata
  json_attributes_path: "$.response"
  json_attributes:
    - thermometers
    - windmeters
    - rainmeters
  resource: http://IP_ADDRESS/PASWORD/get-status
  value_template: OK
- platform: template
  sensors:
    achterpui_temperatuur:
      friendly_name: "achterpui_temperatuur"
      value_template: "{{ state_attr('sensor.hwdata','thermometers')[0].te }}"
      unit_of_measurement: '°C'
    windsnelheid:
      friendly_name: "windsnelheid"
      value_template: "{{ state_attr('sensor.hwdata','windmeters')[0].ws }}"
      unit_of_measurement: 'km/h'      
    terrasrand_temperatuur:
      friendly_name: "terrasrand_temperatuur"
      value_template: "{{ state_attr('sensor.hwdata','windmeters')[0].te }}"
      unit_of_measurement: '°C'
    windrichting:
      friendly_name: "windrichting"
      value_template: "{{ state_attr('sensor.hwdata','windmeters')[0].dir.split (' ')[1] }}"
      unit_of_measurement: 'graden'
    regenval:
      friendly_name: "regenval"
      value_template: "{{ state_attr('sensor.hwdata','rainmeters')[0].mm}}"
      unit_of_measurement: 'mm'

No it works like a charm.

[bdraco]

Looks like the server was being overloaded and closing the connection. It seems like this has been solved by reducing the number of calls to the server.