Godot Engine provides the OS class for various platform-specific functionalities, including process creation. However, Godot’s OS class does not directly expose methods for redirecting a process’s standard input, output, or error streams.
If you need to interact with the standard input of a process in Godot, you may need to consider alternative approaches, such as using custom inter-process communication (IPC) mechanisms or modifying the source code of the external process if you have control over it.
That’s why I need to create a process that acts as a server. This is the method I saw on this webpage on Godot chess:
https://gdscript.com/projects/chess-in-godot/
Also, your answer is similar to previous question in this topic: