QAbstractSocket::waitForConnected() does not waits

[babu198649]

Hi
The Qt doc says that QAbstractSocket::waitForConnected(-1) will wait until the connection is made.But it returns immediately.The following program shows the problem.

#include <QtCore>
#include <QtNetwork>
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
 
    QTcpSocket socket;
    socket.connectToHost(QString("127.0.0.1"), 8888);
    if(socket.waitForConnected(-1))
        qDebug()<<"wait connected";
 
    qDebug()<<socket.state();
 
    return a.exec();
}

#include <QtCore>
#include <QtNetwork>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QTcpSocket socket;
    socket.connectToHost(QString("127.0.0.1"), 8888);
    if(socket.waitForConnected(-1))
        qDebug()<<"wait connected";

    qDebug()<<socket.state();

    return a.exec();
}

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In the above program the if condition is supposed to return always true.But it always returns immediately and the socket state is in unconnected state.

[jpn]

What does error() return?

[babu198649]

error() returns AbstractSocket::ConnectionRefusedError and errorString() returns
"Connection refused".

After some trial ,When i changed the host to remote host instead of local host i.e.
socket.connectToHost(QString("192.168.1.5"), 8888);
the function waits as expected.Is this a error in the waitForConnected function.

[jpn]

What's the point of waiting if the connection gets refused?

[babu198649]

I want a client application which keeps trying till it gets connected to server.

I dont know who is refusing the connection since no server is listening to port 8888(to which client is trying to connect).

Although i use while loop to reconnect as a workaround,the while makes the application run slower.