[BUG] startDetachedProcess dies after about 30 seconds about qownnotes HOT 5 OPEN

Seems like https://doc.qt.io/qt-6/qprocess.html#startDetached-1 has a timeout in

But it doesn't look that you can get around that easily...
But I also don't think it's a good idea to run processes from QOwnNotes in the background indefinitely...

What did you try to do with https://git.sad.ovh/sophie/QOwnNotesDiscordRPC/src/branch/main/main.py?

from qownnotes.

Seems like https://doc.qt.io/qt-6/qprocess.html#startDetached-1 has a timeout in

QOwnNotes/src/utils/misc.cpp

Lines 343 to 370 in e915cfc

	/**
	* Starts an executable detached with parameters
	*
	* @param executablePath the path of the executable
	* @param parameters a list of parameter strings
	* @param workingDirectory the directory to run the executable from (optional)
	* @return true on success, false otherwise
	*/
	bool Utils::Misc::startDetachedProcess(const QString &executablePath, const QStringList &parameters,
	QString workingDirectory) {
	QProcess process;
	if (workingDirectory.isEmpty()) {
	// set the directory to run the executable from
	// process.setWorkingDirectory() doesn't seem
	// to do anything under Windows
	workingDirectory = QCoreApplication::applicationDirPath();
	}
	// start executablePath detached with parameters
	#ifdef Q_OS_MAC
	return process.startDetached(QStringLiteral("open"),
	QStringList() << executablePath << "--args" << parameters,
	workingDirectory);
	#else
	return process.startDetached(executablePath, parameters, workingDirectory);
	#endif
	}

But it doesn't look that you can get around that easily... But I also don't think it's a good idea to run processes from QOwnNotes in the background indefinitely...

What did you try to do with https://git.sad.ovh/sophie/QOwnNotesDiscordRPC/src/branch/main/main.py?

In short, I wanted to add Discord RPC to QOwnNotes. This requres a pretty complicated protocol and from what I know QML does not have a good binary writing and protocol making library (also, because I'm lazy.. who isn't? xD)

I've succeeded in this (however, it's quite buggy, due to this issue). The QML and python scripts manage state through a websocket.

1. QML starts Python
2. Python closes if already open
3. QML connects websocket to python
4. Python sends data
5. If no connection in 5s, python closes script

from qownnotes.

https://git.sad.ovh/sophie/QOwnNotesDiscordRPC/src/branch/main/main.qml

Nifty, websocket in QML 😉👍️

Hm, things you maybe could do...

• Find out if you can increase the timeout for QProcess, then I could add that feature
• Run your Python script periodically and do polling in your Python script (or do you need bidirectional communication between Discord and your Script?)
• Start your python script as system d service?

from qownnotes.

There is no timeout in QProcess::startDetached, it is mostly likely an issue in the python script you are launching. Try running a program with infinite loop and see if it stops after 30 seconds.

from qownnotes.

Ah, good insight! I hardly ever use Python. 😁

from qownnotes.