QT mysql connectivity issue on other than default port

Manish Bhavsar

Hi,

I have QT mysql connectivity issue.

I have created one docker instance where I have installed mysql. This mysql instance is running
on port 6603 and not a regular port of 3306.
This port is open and is accessible from outside as well. Now I am connecting to this mysql instance
from all other applications which is not built using QT, like I am able to connect using node js or
any other 3rd party mysql editor. This means there is no connectivity issue.
But when I try to connect to this server using QSqlDatabase, it is either not connecting or says access denied.
However, if I change the above server port from 6603 to default 3306, QT application is able to connect.
Not getting where the things are going wrong. I have used below code of QT.

QJsonObject jo = getConnectionDetails(); // getConnectionDetails has all values of actual connections.
QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL",jo.value("conn_name").toString());
db.setHostName(jo.value("hostname").toString());
db.setDatabaseName(jo.value("dbname").toString());
db.setUserName(jo.value("username").toString());
db.setPassword(jo.value("password").toString());
db.setPort(jo.value("port").toInt());
if (!db.open()){
        error = db.lastError().databaseText();
        qDebug() << "Connection error: " + error;
        return false;
    }
    return true;

Above code is part of connector function.
Please suggest why this happening?

Cheers

Manish

Christian Ehrlicher

@Manish-Bhavsar said in QT mysql connectivity issue on other than default port:

jo.value("port").toInt()

Did you actually check if it returns what you're expecting?

SGaist

Hi,

Beside the port number.

What exact error are you getting ?

Do you have the MySQL plugins for your Qt installation ?
How did you install Qt ?
Which version is it ?
On which OS ?