QUERY · ISSUE

esp32: Using umqtt blocks access to webrepl

openby Kriechiopened 2018-12-30updated 2019-01-17

port-esp32

I'm using a ESP32-WROOM32 flashed with esp32-20181229-v1.9.4-762-gfa50047bb.bin.

When using umqtt in main.py with:

    c = MQTTClient('relay-board-esp32', 'example.com')
    c.set_callback(sub_cb)
    c.connect()
    c.subscribe('POWER')

    try:
        while True:
            c.wait_msg()
    finally:
        c.disconnect()

and webrepl in boot.py with:

import time
import network
import webrepl

nic = network.WLAN(network.STA_IF)
nic.active(True)
nic.connect('wifi', 'password')

while not nic.isconnected():
    time.sleep(1)

print('Connected to WiFi!')
print(nic.ifconfig())

webrepl.start()

no further connections via webrepl are possible.

Is this intended? Is there a solution or work around?
I thought the webrepl is listening in the background for new connections, but as soon as I run umqtt, webrepl does not accept new connections any more.

Does this mean no simultaneous access to webrepl and mqtt subscriptions is possible?

CANDIDATE · ISSUE

[Errno 103] ECONNABORTED MQTT

closedby yigibiheopened 2017-03-20updated 2024-08-25

Hello,

I flashed the last stable of micropython to my ESP-01 1mb with esptool. I connected to it the wifi, I can ping the esp from my mqtt server.

Esp is fed from external power and extra 1000uf capacitor was added for extra stability. I reflashed the module.

>>> print(sta_if.ifconfig())
('192.168.4.55', '255.255.255.0', '192.168.4.1', '192.168.4.1')
>>> from umqtt.simple import MQTTClient
>>> c = MQTTClient("umqtt_client", "192.168.4.10")
>>> c.connect()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "umqtt/simple.py", line 56, in connect
OSError: [Errno 103] ECONNABORTED
>>> c.ping()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "umqtt/simple.py", line 94, in ping
OSError: [Errno 103] ECONNABORTED
>>> import esp
>>> esp.check_fw()
size: 586684
md5: 2c7ce68f0e1a5690257698e5e42caf16
True

9 comments

dmascord · 2017-03-30

What MQTT broker is running on 192.168.4.10 ? umqtt.simple implements MQTT Version 3.11. Have you tested the broker with another MQTT client with version 3.11 enabled ?

marev3 · 2017-08-31

Hello,

same here.

on my esp8266 with micropython 1.9.2 I tried:

from umqtt.simple import MQTTClient
c = MQTTClient("esp8266", "192.168.1.116")
c.connect()

and got:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "umqtt/simple.py", line 56, in connect
OSError: [Errno 103] ECONNABORTED

The server running on 192.168.1.116 is mosquitto 1.3.4 (which should support mqtt 3.1.1) and is working with another client (publishing and subscribing).

What else can I try?

dmascord · 2017-08-31

Could you try enabling authentication on mosquitto ? It could be that there is a malformed MQTT packet when authentication is not on

marev3 · 2017-08-31

In the meantime I installed the newest version 1.4.14 of mosquitto that didn't change that error.

Could you try enabling authentication on mosquitto ?

How do I configure that?

dmascord · 2017-08-31

https://medium.com/@eranda/setting-up-authentication-on-mosquitto-mqtt-broker-de5df2e29afc
seems like a decent howto

marev3 · 2017-09-01

Okay, I enabled authentication on the mosquitto server, that is working fine.

On the esp8266 I tried it with:

from umqtt.simple import MQTTClient
c = MQTTClient(client_id = "esp8266", server = "192.168.1.116", port = 1883, user = b"hallo", password = b"test")
c.connect()

and still get:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "umqtt/simple.py", line 56, in connect
OSError: [Errno 103] ECONNABORTED

marev3 · 2017-09-02

I found out that I accidentally had connected the esp8266 to my guest wifi instead of the wifi in which my mosquitto server is.
So my problem is solved.

TJaenichen · 2023-03-21

Thanks... that could have taken a while

jonnor · 2024-08-25

Problem solved, issue should be closed.

esp32: Using umqtt blocks access to webrepl

[Errno 103] ECONNABORTED MQTT

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