esp8266-arduino | arduino library for doing basic HTTP commands

The problem testing my mood for the past few days is that although my ESP8266 chip is perfectly capable of fetching packets with parsePacket in a while loop, it completely misses these when I want BOTH to listen to incoming packets, but also allow my ESP8266 to read out sensors and send these over wifi.

So I cut out everything that has to do with the sensors and pasted the code below, but here is what's happening.

1. In Setup(), the ESP sets up the wifi, SoftAP node, UDP and configures it.
2. It then gets to a while loop where it listens for an incoming package over wifi; this tells the ESP to start spitting out data.
3. When the ESP receives a packet (this is the "A. <<<" comment in my code and works fine), the code moves to the Loop() part and the sensors start spitting out data which is send over wifi

MY PROBLEM IS THIS STEP:

1. During reading out the sensors and sending data over wifi I want the ESP8266 also to be able to receive incoming packets over wifi (this is the "B. <<<" comment in my code and does not work), the ESP keeps sending sensor data over wifi, but it does not receive any packets

My guess is that A. works fine because the 'while' condition will allow parsePacket to always catch an incoming packet. And because B. is inside the void loop I cannot use a 'while' condition but instead an 'if' statement, the parsePacket command is not requesting for an incoming package on the right moment. I have not been able to implement something that solves this. Quite a bit of searching is not really helping out and I cannot imagine I am alone having this problem.

Some things I found related:

• The WifiEventHandler unfortunately does not list an event that is related to receiving a packet: https://arduino-esp8266.readthedocs.io/en/latest/esp8266wifi/generic-class.html
• I also found this topic, but I am unable to get this to work and the answer to this question somehow does not seem complete: Making a UDP class which doesn't block an ESP8266 / Arduino

I greatly appreciate your help and feedback!

Here is my code: