Problem with io_context.run( )

Krrris88

Hello everyone,

I want to write chat in Qt with boost library. I did it in past in terminal and it worked.

I want to start server in widget constructor:

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);

    boost::asio::io_context io_context;
    tcp::endpoint endpoint(tcp::v4(), 2000);
    chat_server server(io_context, endpoint);
    io_context.run();
}

Problem is with this io_context.run(). There is no error, program compiles and runs, but application window doesn't appear. I do sth wrong here. Maybe constructor is a wrong place to start server? Maybe I have to start after click some button? Or maybe sth else? Please help.

jsulm

@Krrris88 said in Problem with io_context.run( ):

Maybe constructor is a wrong place to start server?

Yes, if run() is a blocking call you're blocking the event queue.
You should move this boost part in another thread.

Krrris88

Thanks for answer.