threaded server for multiple clients writing to the client only first time

[wysota]

Reason to use threads for Networking is .. I need to connect Multiple clients (100 to 1000) with the server.

This doesn't explain the use of threads.

Do you create a new database connection with a unique name for each thread?

[meena]

ok at this place the thread is created..

void FortuneServer::incomingConnection(int socketDescriptor)
{
FortuneThread *thread = new FortuneThread(socketDescriptor, fortune,this);
thread->start();
}

my understanding is whenever the new connection happens (a new client connects to the server)new thread is connected..

I am just trying to build my requirements on existing Threaded Fortune Server example.
yes currently creating a new database connection for each thread. any suggestion on DB connectivity please correct me.

[wysota]

Please post the contents of your createConnection() method.

[meena]

createConnection() is in database.h file & the method is exactly look like this

static bool createConnection()
{
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName(" ... ");
if (!db.open()) {
QMessageBox::critical(0, qApp->tr("Cannot open database"),
qApp->tr("Unable to establish a database connection.\n"
"This example needs SQLite support. Please read "
"the Qt SQL driver documentation for information how "
"to build it.\n\n"
"Click Cancel to exit."), QMessageBox::Cancel);
return false;
}

return true;
}

[wysota]

So you are not creating a new connection for each new thread, you are reusing the same connection name each time so only one thread at once is able to communicate with the database. And that's what Qt already told you, you even quoted the message in one of the first posts.