How to create TCP server on Arduino UNO WiFi? I'm currently trying to make my Arduino UNO WiFi work as a TCP host, so I can send him a TCP message and it sends a response.

I had no problem doing this on the Arduino Galileo Gen 2 using the EthernetServer, but since this one is using WiFi, EthernetServer isn't an option.

I can, however, run a web server, but that's not what I want.

So how do I make the Arduino receive, handle and respond to sent TCP/IP messages?
For Arduino UNO Wifi, you have to use library "UnoWiFi-Developer-Edition-Lib". You can directly download and install it through library manager or can get it offline through the following link "https://github.com/arduino-libraries/UnoWiFi-Developer-Edition-Lib". 

Hope this can help you.