I have a small Python server which I can POST commands to in order to control my LIFX lights. From Postman I can spam this as much as I like and never see an error, but what I'm trying to do is build a couple of wall switches that trigger the lights using NodeMCU boards, and from there, I'm getting ECONNABORTED errors on about 1 in 5 requests.
Everywhere I've looked for solutions the issue has actually been either a misconfigured server or a misconfigured client, but I'm wondering if I've got something else going on here. My server code is simple, and, as I say, it seems to work when triggered from everywhere but my NodeMCU boards.
main.py:
from machine import Pin, reset
from time import sleep
import urequests
# set these two pins as required to up/down
buttonUp = Pin(4, Pin.IN, Pin.PULL_UP)
buttonDown = Pin(5, Pin.IN, Pin.PULL_UP)
light = "LightName"
# button can be pressed, held or double pressed
# press = 1x press, 1x release in .5 seconds
# hold = 1x press, 0x release
# double = 2x press, 2x release in .5 seconds
def detectPress():
pressed = False
press = 0
direction = 'up'
release = 0
if not buttonUp.value() or not buttonDown.value:
pressed = True
if not buttonDown.value():
direction = 'down'
while buttonUp.value() and buttonDown.value():
sleep(.01) # wait for a button push
for x in range(8):
if pressed == False:
if not buttonUp.value():
direction = 'up'
pressed = True
press += 1
if not buttonDown.value():
direction = 'down'
pressed = True
press += 1
else:
if direction == 'up':
if buttonUp.value():
pressed = False
release += 1
else:
if buttonDown.value():
pressed = False
release += 1
sleep(.1)
return press, release, direction
error_count = 0
while True:
if error_count >= 5:
print ("Too many errors. Resetting...")
reset()
pressed, released, direction = detectPress()
sleep_time = .1
if pressed >= released:
packet = {"light": light}
if pressed == released:
if pressed == 0:
held = True
else:
held = False
else:
held = True
if pressed > 1:
double = True
else:
double = False
if double is True:
packet["level"] = "full"
if held is True and double is False:
packet["dim"] = direction
sleep_time = 0.8 # don't spam the server/crash the board
if held is False and double is False:
if direction == 'up':
packet["level"] = 'on'
else:
packet["level"] = 'off'
print (pressed, released, direction, held, double, packet)
try:
response = urequests.post("http://192.168.1.10:7990/lights", headers={'Connection': 'Close'}, json = packet)
if error_count > 0:
error_count -= 1
urequests.usocket.reset()
except Exception as e:
error_count += 1
print ("Error sending packet {}: {} - error count is at {} retrying...".format(packet, repr(e), error_count))
urequests.usocket.reset()
sleep(1)
try:
response = urequests.post("http://192.168.1.10:7990/lights", headers={'connection': 'Close'}, json = packet)
except Exception as e:
error_count += 1
print ("retry failed")
pass
pass
print ("waiting {}".format(sleep_time))
sleep(sleep_time)
I've a suspicion that it's a socket issue, but have no idea what else to do to debug that.
On a fresh reset, I can pretty much guarantee the first 4 or 5 transmissions will work. I can also pretty much guarantee that holding a button (to trigger a command every second or so) will fail after 3 or 4 transmissions.
Sometimes retries work, more often they don't.
Most of the time after a failure, waiting 5 seconds and then trying again will work, but sometimes it won't.
Most of the time an initial press after a long delay (>1 minute) will work, but sometimes it won't.
