How could I use nodemcu to send a ping( monitor spec ip)?

Question

I'm using an esp8266 development board for development. At present, I need to implement a ping like function, but I searched around and found no code to implement. I'm using the firmware of nodemcu, using Lua as the programming language. Do you have any tips? Thank you first.

ps: More specifically, the function I want to implement is to monitor whether a fixed IP is online.

Answer 1

A ping command is not available in NodeMCU at the moment. There is a net_info module waiting for release though.

Until then you have to use a workaround using other functions from existing modules.

https://openamp.wordpress.com/2016/12/21/alternate-to-sending-ping-from-nodemcu-lua-sdk/