Nodemcu Tcp Server not accepting Tcp clients??? - Programming Questions - Arduino Forum
ESP8266 Arduino: Socket Server - techtutorialsx
ESP8266 Part 5 – Engr Edu
c# - TCP/IP communication between ESP8266 server and C # client WinForm application - Stack Overflow
GitHub - sigma-prj/esp-tcp-server: Sample ESP8266 TCP Server Application. Designed to accept single-byte data from TCP client side and set 3 GPIO outputs in accordance to received 3 less-significant bits.