Wifi is unstable on ESP8266

[Andrei-Iosifescu123]

I noticed that after some time, port 80 (which should be always open) is closed and the device does not respond to any command. Sometimes, the wifi simply disconnects with no errors, but if I run sta_if.ifconfig() it still returns the IP address it was using when it was connected. This is my code:

# This file is executed on every boot (including wake-boot from deepsleep)
import esp
esp.osdebug(None)
import network
import uos, machine
from machine import Pin
import time
import socket
#uos.dupterm(None, 1) # disable REPL on UART(0)
import gc
#import webrepl

'''def check_port_80:
    try:
        s_r = socket.socket
        s_r.connect(socket.getaddrinfo('127.0.0.1', 80)[0][-1])
    except OSError:
        s_r.close()
        return False'''
    
#configurare releu
relay = Pin(0, Pin.OUT)
relay.value(1)

# citire fisier
try:
    file = open ("status", "r")
    status = file.read()
    if status == '1':
        relay.value(0)
    else:
        relay.value(1)
    file.close()
except OSError:
    print('file does not exist')
    with open("error.log", "a") as file:
        file.write("\r\n" + str(time.time()) + ": " + str(e))
    file.close()
    file = open ("status", "x")
    file.close()

# conectare la retea
sta_if = network.WLAN(network.STA_IF)
time.sleep(1)
if sta_if.ifconfig()[0] == '0.0.0.0':
    #time.sleep(1)
    print('connecting to network...')
    sta_if.active(True)
    sta_if.connect('network', 'password') # Dispozitivul incearca sa se conecteze pana reuseste, nu trebuie inclusa aceasta instruciune intr-o bucla.

while sta_if.ifconfig()[0] == '0.0.0.0':
    pass

print('network config:', sta_if.ifconfig())

# configurare socket pe portul 80
s = socket.socket()
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind(('', 80))
s.listen(5)

while 1:
    while sta_if.ifconfig()[0] != '0.0.0.0':
        try:
            conn, addr = s.accept()
            request = conn.recv(1024)
            request1 = request.decode()
            print('Content = %s' % str(request1))
            print('\n')
            #print(10/0)
            if 'GET /on' in request1:
                relay.value(0)
                file = open ("status", "w")
                file.write('1')
                file.close()
                response = 'HTTP/1.1 200 OK\n\nRelay turned on'
                #print('relay on')
            elif 'GET /off' in request1:
                relay.value(1)
                file = open ("status", "w")
                file.write('0')
                file.close()
                #print('relay off')
                response = 'HTTP/1.1 200 OK\n\nRelay turned off'
            elif 'GET /status' in request1:
                file = open ("status", "r")
                status = file.read()
                if status == '1':
                    response = 'HTTP/1.1 200 OK\n\nRelay status in ON'
                else:
                    response = 'HTTP/1.1 200 OK\n\nRelay status in OFF/UNKNOWN'
                file.close()
            else:
                response = 'HTTP/1.1 404 Not Found\n\nNot Found'

            conn.send(response)
            conn.close()
        except Exception as e:
            s.close()
            with open("error.log", "a") as file:
                file.write("\r\n" + str(time.time()) + ": " + str(e))
            file.close()
            if sta_if.ifconfig()[0] == '0.0.0.0':
                print('connecting to network...')
                sta_if.active(True)
                sta_if.connect('network', 'password') # Dispozitivul incearca sa se conecteze pana reuseste, nu trebuie inclusa aceasta instruciune intr-o bucla.
            while sta_if.ifconfig()[0] == '0.0.0.0': #sta_if.isconnected():
                pass
            print('network config:', sta_if.ifconfig())

            try:
                time.sleep(3)
                # configurare socket pe portul 80
                s = socket.socket()
                s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
                s.bind(('', 80))
                s.listen(5)
            except OSError as e:
                with open("error.log", "a") as file:
                    file.write("\r\n" + str(time.time()) + ": " + str(e))
                file.close()
                pass
    else:
        s.close()
        if sta_if.ifconfig()[0] == '0.0.0.0':
            print('connecting to network...')
            sta_if.active(True)
            sta_if.connect('network', 'password') # Dispozitivul incearca sa se conecteze pana reuseste, nu trebuie inclusa aceasta instruciune intr-o bucla.
        while sta_if.ifconfig()[0] == '0.0.0.0': #sta_if.isconnected():
            pass
        print('network config:', sta_if.ifconfig())

        try:
            time.sleep(3)
            # configurare socket pe portul 80
            s = socket.socket()
            s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
            s.bind(('', 80))
            s.listen(5)
        except OSError as e:
            with open("error.log", "a") as file:
                file.write("\r\n" + str(time.time()) + ": " + str(e))
            file.close()
            pass

Any help would be greatly appreciated.

[davefes]

it still returns the IP address it was using when it was connected.

My understanding is that is normal.

if sta_if.ifconfig()[0] == '0.0.0.0':
    #time.sleep(1)
    print('connecting to network...')
    sta_if.active(True)
    sta_if.connect('network', 'password') # Dispozitivul incearca sa se conecteze pana reuseste, nu trebuie inclusa aceasta instruciune intr-o bucla.

I don't think that you can ask for sta_if.ifconfig() before the interface is active ... I could be wrong.

[Andrei-Iosifescu123]

it still returns the IP address it was using when it was connected.

My understanding is that is normal.

if sta_if.ifconfig()[0] == '0.0.0.0':
    #time.sleep(1)
    print('connecting to network...')
    sta_if.active(True)
    sta_if.connect('network', 'password') # Dispozitivul incearca sa se conecteze pana reuseste, nu trebuie inclusa aceasta instruciune intr-o bucla.

I don't think that you can ask for sta_if.ifconfig() before the interface is active ... I could be wrong.

The interface was active before, this is just a check. It should return 0.0.0.0 if it is not connected.