[Interest] QTcpServer. Connecting.Sending data.

[Tony Rietwyk]

Hi Alexander, 

 

QTcpServer.listen only sets up the listening - it does not wait until a new
connection arrives.   In my code, I only call listen once, then run an event
loop.  The new connections arrive in the incomingConnection slot.  

 

void MyThread::run()

{

                srv = new (std::nothrow) tcp_server(ised_win_raw_ptr);

            if (!connect(srv,SIGNAL(newConnection(),srv,SLOT(connection())
))  error....

        if (!srv->listen(QHostAddress::Any, port)) error....
        exec();
        srv->close();
        delete srv;

}

 

Of course, you can put the slot anywhere.   The slot uses
nextPendingConnection() to get the socket.  

 

Works well for me.  

 

If you cannot use QThread.exec, then use srv->waitForNewConnection in your
terminate loop.  

 

Tony

 

 

From: interest-bounces+tony=rightsoft.com.au at qt-project.org
[mailto:interest-bounces+tony=rightsoft.com.au at qt-project.org] On Behalf Of
Alexander Syvak
Sent: Thursday, 10 October 2013 5:11 AM
To: Qt Interest
Subject: [Interest] QTcpServer. Connecting.Sending data.

 

Hello,

here's the code of the redefined method run() of QThread class =>
void run() override 

    {
        srv = new (std::nothrow) tcp_server(ised_win_raw_ptr);
#ifdef DEBUG
        qDebug() << "listener's thread => " << thread();
#endif
        terminate_ = false;
        while ( !terminate_ ) if ( !srv->isListening() )
srv->listen(QHostAddress::Any, port);
#ifdef DEBUG
        qDebug() << "Deleting the ised_tcp_server object.";
#endif
        srv->close(); // Closes the server. The server will no longer listen
for incoming connections.
        delete srv;
    }
The program connects to 9000 port for listening.


Using the netcat command
nc -vv 127.0.0.1 9000
yields
PC_NAME [127.0.0.1] 9000 (?) open


Then I typed start and hit Enter.
The break point has been set in incomingConnection which is redefined
in the tcp_server class inheriting QTcpServer. 


Debugger did not paused in the method body when netcat connected to the
port.
 
 
Solutions?

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.qt-project.org/pipermail/interest/attachments/20131010/3b53ce42/attachment.html>