D newbie here. My questions are:

1: How to terminate runTask()? Do I even need to terminate it?
2: Am I destroying the object properly here (from within the class)?

I am running into a situation when I try to free up an object. Consider the following pseudo code:

// app.d
shared static this()
{ 

listenTCP(25, (conn){
	Client client = new Client(conn, db);
});

}

// client.d
class client
{ 

this(TCPConnection stream)
{
	this.conn = stream;
		
	this.task = runTask(
	{
		while (!this.quit && this.conn.connected()) 
		{
			auto ln = cast(string) this.conn.readLine();
			this.processLine(ln);
		}
	});

	this.task.join();
}

void close()
{
	destroy(this);
}

}

And when a client says "QUIT" I would like to destroy the object using close() but I get an error like so:

object.Error@(0) access violation at line --> while (!this.quit && this.conn.connected())

Thanks for your help