HTTP Post with urequests OSError: -1

[jimpower]

Hi,

I am trying to post the temperature reading from my sensor to my cloud platform it works perfectly for about 5 mins than I get the following error message. Can someone please help with what I have missed.

while True:

temp.start_conversion()
time.sleep(5)

res = urequests.post('cloudsite', json={'mysensor': str(temp.read_temp_async())})
res.close()
if (res.status_code - 200) < 100: # check that response code is in the 200 range
    print("Temperature POST Successful     - " + str(temp.read_temp_async()) + " Degrees")
else:
    print('there was some error')

    pycom.heartbeat(False) 				#If using battery remove '#'
    time.sleep(20)

[livius]

@jimpower
Will be good if you add to every loop:
gc.collect()

also it is possible that you loose connection to the network?
Add try except block and try reconnect to the network on exception condition

[jimpower]

@livius is it possible for you to give me an example of how to add the gc.collect() and network reconnect on condition?

[livius]

@jimpower said in HTTP Post with urequests OSError: -1:

sample for gc

import gc

while True:
    do something
    gc.collect()

Add try except block and try reconnect to the network on exception condition

simple use

try:
   your send statements
except:
   yourConnectWifiProc()

you can do more intelligent check for some error codes and different conditions
but this is simplification to show simple thing

[jimpower]

@livius I added to connect to WiFi as part of the loop today and pinged my sensor it still failed with same error MSG but ping never dropped a packet so I don't think it is a network connectivity issue, well I assume it isn't.

What is the function of garbage collect?

[livius]

@jimpower said in HTTP Post with urequests OSError: -1:

What is the function of garbage collect?

Free mem

[jimpower]

@livius ahh thanks that will prob do it

[jimpower]

@livius Thanks for your help, the gc.collect() has worked and the loop has remained stable for a few hours now.