WiFi101 | Wifi library for the Arduino WiFi 101 Shield | Wifi library

I'm trying to create a REST server on an arduino mkr1000. upon searching google i came upon the aRest library which handles most of the stuff i need.

aRest library documentation

So i created a sample sketch based on the guides. Here is the code:

I got a system where I would send a command from my host computer using Python Socket (the computer is the server) and the MKR1000 (client) would send back information depends on the command sent.

Unfortunately, the bidirectional communication is unstable. I can guarantee the MKR1000 received the command and (maybe) sending information back, but for some reason, my host computer would not receive the command.

Anyway, this is my first time trying out socket, so I would like some guru to review my code and maybe spot the mistake in here? Thanks a lot.

Python:

I have recently started working with arduino and coding in C and have stumbled upon an issue.

Everything is working as it should be :

Read NFC tag > send POST to Laravel API > Recieve body response to display on LCD

However the program is very inconsistent meaning that after an unknown period of time (this is a random period of time) the program returns a connection failed as shown in the monitor returns.

After this connection failed the program will not return back to it's connection and will keep returning connection failed until you restart the program.

I myself am not able to solve this after hours of googling, and therefor I am asking assistance from you guys.

(Do not give me plain code as an answer, but give me explanation on the side as I am learning and want to learn from this.)

Hardware:

Arduino MKR1000

Adafruit PN532 NFC/RFID Controller Shield (SPI)

Monitor returns:

This is the simple code where i'll use me Android phone to send the password to the ArduinoMKR1000 over a network which will in turn check your password and unlock the gift. I use UDP sockets. The Arduino code is:

I'm developing a system that consists of an arduino mkr1000 that I want to send data via wifi to a java server program running in my local network.

Everything works except the main part: data sent by the arduino is sometimes not received by the server...

I'm using the arduino Wifi101 library to connect to my wifi, get a WiFiClient and send data. The following code is just a example to demonstrate the problem: