Re: How to test Gio::SocketClient::connect_to _host_async()?

[Markus Kolb <markus kolb+gtkmm tower-net de>]

Am 2015-02-06 11:51, schrieb Markus Kolb:
> Hi,
>
> I've already the next question...
>
> I'd like to test my SmtpClient code which will be part of a Gtk App.
> But for test it should be called from a Gio::Application.
>
> Now I've the problem, that the Gio::Application exits before the
> connect_to_host_async calls its SlotAsyncReady.
>
> At least I think this, because the output is...
> on_activate() started
> on_activate() finished
> and I'm missing the
> on_connect_async_ready output from the
> SmtpClient::on_connect_async_ready() in between, somehow.
>
> What must be done, that the test app waits for its async-stuff?
> I've already tried with a simple sleep(20) in on_activate() because
> the connect timeout is set to 10 seconds and 20 seconds should be
> enough time to get the SlotAsyncReady called.
> But it is not called.
> Must be that I don't understand how this works behind the scenes, but
> couldn't find documentation.
>
> Can you please give me some hints?!
>
>
> #include "SmtpClient.h"
> #include <giomm/application.h>
> #include <iostream>
>
> Glib::RefPtr<Gio::Application> app;
>
> void on_activate()
> {
>   app->hold();
>   std::cerr << "on_activate() started" << std::endl;
>   SmtpClient client("smtp.example.com", 25, "test example com", false);
>   client.connect();
>   std::cerr << "on_activate() finished" << std::endl;
>   app->release();
> }
>
> int main (int argc, char **argv)
> {
>   app = Gio::Application::create("eu.n4v.battleship");
>   app->signal_activate().connect(&on_activate);
>   return app->run(argc, argv);
> }
>
> Here some snippets of SmtpClient class...
>
> SmtpClient::SmtpClient(const Glib::ustring& smtp_server, const guint&
> smtp_port, const Glib::ustring& smtp_from, bool tls_enable);
>
> void SmtpClient::connect() const
> {
>   m_p_sock_client-> (m_smtp_server, m_smtp_port, sigc::mem_fun(this,
> &SmtpClient::on_connect_async_ready));
> }


Ups, this is... (cutted somehow the method)

void SmtpClient::connect() const
{
  m_p_sock_client->connect_to_host_async(m_smtp_server, m_smtp_port, 
sigc::mem_fun(this, &SmtpClient::on_connect_async_ready));
}


> The m_p_sock_client = Gio::SocketClient::create();
>
> void
> SmtpClient::on_connect_async_ready(Glib::RefPtr<Gio::AsyncResult>&
> result) const
> {
>   std::cerr << "on_connect_async_ready" << std::endl;
>   Glib::RefPtr<Gio::SocketConnection> con =
> m_p_sock_client->connect_to_host_finish(result);
>   if (con == 0)
>   {
>     signal_smtp_connect_failed.emit(con);
>   } else
>   {
>     signal_smtp_connect.emit(con);
>   }
> }