Question

Is there a way to catch CTRL+C in dart console application?

For example, press CTRL+C to send clean “closing” packet to web socket clients from server instead of just brutally closing the sockets.

Answer 1

I’ve had a dig around, and I think that the answer, at the moment is no.

You can capture stdin, for example:

import 'dart:io';

void main() {
  stdin.onData = () => print(stdin.read());
}

but this does not respond to CTRL+C.

Elsewhere, process.dart (part of the dart:io library) defines various signals, such as SIGQUIT, and an onExit() callback, but this is used to control child processes rather than the host process.