I am trying to connect to Adafruit io and get : could not connect to MQTT server OSError23  I can connect to my wifi Hope you can help  The following is the code.  I removed the key

from machine import Pin
import machine
from time import sleep
import network
import time
from umqtt.robust import MQTTClient
import sys
import dht
import os
import onewire
import ds18x20

ADAFRUIT_IO_URL = b'io.adafruit.com'
ADAFRUIT_USERNAME = b'sprink'
ADAFRUIT_IO_KEY = b''
ADAFRUIT_IO_FEEDNAME1 = b'temperature'
ADAFRUIT_IO_FEEDNAME2 = b'humidity'
ADAFRUIT_IO_FEEDNAME3 = b'pool'
ADAFRUIT_IO_FEEDNAME4 = b'solar'
MESUREMENT_INTERVAL = 5
# create a dynamicnest318random MQTT clientID
random_num = int.from_bytes(os.urandom(3), 'little')
mqtt_client_id = bytes('client_'+str(random_num), 'utf-8')

client = MQTTClient(client_id=mqtt_client_id,
server=ADAFRUIT_IO_URL,
user=ADAFRUIT_USERNAME,
password=ADAFRUIT_IO_KEY,
ssl=False)
#ADAFRUIT_USERNAME/feeds/ADAFRUIT_IO_FEEDNAME1
mqtt_feedname1 = bytes('{:s}/feeds/{:s}'.format(ADAFRUIT_USERNAME, ADAFRUIT_IO_FEEDNAME1), 'utf-8')
mqtt_feedname2 = bytes('{:s}/feeds/{:s}'.format(ADAFRUIT_USERNAME, ADAFRUIT_IO_FEEDNAME2), 'utf-8')
mqtt_feedname3 = bytes('{:s}/feeds/{:s}'.format(ADAFRUIT_USERNAME, ADAFRUIT_IO_FEEDNAME3), 'utf-8')
mqtt_feedname4 = bytes('{:s}/feeds/{:s}'.format(ADAFRUIT_USERNAME, ADAFRUIT_IO_FEEDNAME4), 'utf-8')
def do_connect():
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
if not wlan.isconnected():
print('connecting to network...')
wlan.connect('NETGEAR83', 'dynami')
while not wlan.isconnected():
pass
print('network config:', wlan.ifconfig())
try:
client.connect()
except Exception as e:
print('could not connect to MQTT server {}{}'.format(type(e).__name__, e))
sys.exit()

def Send_Data(tTempf,tHum,tPool,tSolar) :
client.publish(mqtt_feedname1,bytes(str(tTempf), 'utf-8'), qos=0)
client.publish(mqtt_feedname2,bytes(str(tHum), 'utf-8'),qos=0)
client.publish(mqtt_feedname3,bytes(str(tPool), 'utf-8'),qos=0)
client.publish(mqtt_feedname4,bytes(str(tSolar), 'utf-8'),qos=0)
def read_dht():
do_connect()
sensor = dht.DHT11(Pin(5))
sleep(2)
sensor.measure()
temp = sensor.temperature()
hum = sensor.humidity()
tempf = temp * (9 / 5) + 32.0
# print('Temperature: %3.1f C' %temp)
# print('Temperature: %3.1f F' %tempf)
# print('Humidity: %3.1f %%' %hum)return
return (str(tempf)), (str(hum))

def read_pool():
do_connect()
# the device is on GPIO12
dat = machine.Pin(4)
# create the onewire object
ds = ds18x20.DS18X20(onewire.OneWire(dat))
# scan for devices on the bus
roms = ds.scan()
# print('found devices:', roms)
# print('temperature:', end=' ')
ds.convert_temp()
time.sleep_ms(750)
temp = ds.read_temp(roms[0])
pool = round((temp * 9 / 5) + 32.0, 1)
return (str(pool))

def read_solar():
do_connect()
# the device is on GPIO12
dat = machine.Pin(25)
# create the onewire object
ds = ds18x20.DS18X20(onewire.OneWire(dat))
# scan for devices on the bus
roms = ds.scan()
# print('found devices:', roms)
# print('temperature:', end=' ')
ds.convert_temp()
time.sleep_ms(750)
temp = ds.read_temp(roms[0])
solar = round((temp * 9 / 5) + 32.0, 1)
return (str(solar))

def colect_Data():
tempf, hum, = read_dht()
pool = read_pool()
solar = read_solar()
return tempf, hum, pool, solar

def main():
while True:
tempf, hum, pool, solar = colect_Data()
#print("Solar")
#print(str(solar))
#print("Pool")
#print(str(pool))
#print("Hum")
#print(str(hum))
#print("Tempf")
#print(str(tempf))
if current_time - last_mesurement_time > MESUREMENT_INTERVAL:
print('Temperature:',tempf,'Humidity',hum,)
Send_Data(tempf,hum,pool,solar)
last_mesurement_time = current_time
main()