[SOLVED] Raspberry QTcpServer says "connection refused" to Windows Desktop QTcpSocket

Randman

Hi ! and here goes first post.

As the title, says I am looking for a little experience with my QT Raspberry/Windows socket handshake.

It works when server and client are on local machine
Ports are forwarded appropriately
IP address is correct.
I can connect with telnet. ( can not open a connection )
I have a native c++ example program that DOES work.

EDIT-
iptables are empty
firewall and antivirus is off.

SERVER CODE
@
m_server = new QTcpServer(this);

// signal newConnection is auto-gened
connect(m_server, SIGNAL(newConnection()), this, SLOT(ConnectionProcessMess$
if(!m_server->listen(QHostAddress("127.0.0.1"), 51717))                    $
{
    qDebug() << "Server could not start";
}else{
    qDebug() << "Starting Server : " << getTime() << " Waiting for Msg : "<$
}

}

/*

We have a request coming in.
*/
void MyTcpServer::ConnectionProcessMessage()
{
qDebug()<<"Message in";
}
@

CLIENT CODE
@
m_currSocket->connectToHost("192.168.1.109", 51717);
if(!m_currSocket->waitForConnected(120000)) // we need to wait...
{
qDebug() << "Error: " << m_currSocket->errorString();
}
}
@

LISTEN STUFF
@open ports and established tcp connections
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.0.1:51717 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:54392 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:6011 0.0.0.0:* LISTEN
tcp 0 832 192.168.1.109:22 192.168.1.117:58142 ESTABLISHED
tcp 0 0 192.168.1.109:38262 192.168.1.105:445 ESTABLISHED
tcp 0 0 192.168.1.109:22 192.168.1.117:56924 ESTABLISHED

programs with 51717 open
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0 localhost:51717 : LISTEN @

Randman

I fixed this by setting the ip address to 0.

@
if(!m_server->listen(QHostAddress("0.0.0.0"), 51717)) $
{
qDebug() << "Server could not start";
}else{
qDebug() << "Starting Server : " << getTime() << " Waiting for Msg : "<$
}
@

t3685

Your server was initially only listening to connections on the same machine. If you want the server to listen to all network interfaces use:

QHostAddress::Any