Handling wifi and internet disconnections

[tekjar]

• If wifi is disconnected, esp should try to connect to AP. Sometimes access point might be offline. We can't do much in that case. But if the problem is with ESP's signal strength, try connecting to AP by slowly increasing the signal strength of esp and lock it down when it is able to find the access point. What about the case where AP was down for some time and ESP starts increasing the signal strength and AP is online again? ESP shouldn't lock down for higher signal strength in this case because the problem is with AP.

Check if wifi disconnection callback , wifi reconnect callback APIs are available

• When internet is lost, connection to mqtt broker in cloud is lost. ESP Should try to reconnect to broker.

Check if internet disconnection callback , internet reconnect callback APIs are available