Tell me what to do in following situation?

[codeartist]

I am thinking of creating a software that will have two systems:

1. Server code and Database
2. Client code and GUI codes.

When someone click the login button on my login page. I create a connection and connectToHost(). It gets connected. Then I need to know how can I get the data from database located on server system so that I can show the data on profile page.

Let suppose I need to retrieve name , address and photo.

Really need help regarding it!!!

[Santosh Reddy]

You need to design an application layer protocol which is understood both by server and client systems.

[codeartist]

Thanks for the reply. Can you show me a sample example.

[Spitfire]

pseudo-code:

// client
void requestUserData( int user_id )
{
    socket->write( "GET_USER_DATA," + QString::number( user_id ) );
}
 
void newDataReceived( void )
{
    QString data( socket->readAll() );
    QStringList sl = data.split( "," );
 
    if( sl.at( 0 ) == "USER_DATA" )
    {
        QString name = sl.at( 1 );
        QString address = sl.at( 2 );
        QString image = sl.at( 3 );
    }
}
 
// server
void sendData( QString name, QString address, QString image )
{
    socket->write( "USER_DATA," + name "," + address + "," + image );
}
 
void dataReceived( void )
{
    QString data( socket->readAll() );
    QStringList sl = data.split( "," );
 
    if( sl.at( 0 ) == "GET_USER_DATA" )
    {
        int user_id = sl.at( 1 ).toInt();
 
        sendData( users[user_id].name, users[user_id].address, users[user_id].image );
    }
}

// client
void requestUserData( int user_id )
{
    socket->write( "GET_USER_DATA," + QString::number( user_id ) );
}

void newDataReceived( void )
{
    QString data( socket->readAll() );
    QStringList sl = data.split( "," );

    if( sl.at( 0 ) == "USER_DATA" )
    {
        QString name = sl.at( 1 );
        QString address = sl.at( 2 );
        QString image = sl.at( 3 );
    }
}

// server
void sendData( QString name, QString address, QString image )
{
    socket->write( "USER_DATA," + name "," + address + "," + image );
}

void dataReceived( void )
{
    QString data( socket->readAll() );
    QStringList sl = data.split( "," );

    if( sl.at( 0 ) == "GET_USER_DATA" )
    {
        int user_id = sl.at( 1 ).toInt();

        sendData( users[user_id].name, users[user_id].address, users[user_id].image );
    }
}

To copy to clipboard, switch view to plain text mode 

[codeartist]

Thanks! This is it! I needed this