QTcpServer::incomingConnection(qintptr) not calling - qt

Question

I'm trying to make client and server using QTcpSocket and QTcpServer.
So, what happens to server.
I run the server, it starts listening (successfully [checked by myself])
I run client, enter 127.0.0.1 for IP address and 30000 for port
Client says that connection estabilished
Server doesn't do anything, just keep waiting
Parts of my program:
//server-work.h
#ifndef SERVERWORK_H
#define SERVERWORK_H
#include <QtCore>
#include <QSqlError>
#include <QDebug>
#include <QSqlQuery>
#include <unistd.h>
#include <QtNetwork/QTcpServer>
#include <QtNetwork/QTcpSocket>
#include <QtSql/QSqlDatabase>
#include "lssclient.h"
class LSSClient;
class LTcpServer : public QTcpServer
{
Q_OBJECT
public:
class LTWorkWithClients : public QThread
{
//Q_OBJECT
public:
LTcpServer* server;
LTWorkWithClients(QObject* parent = 0, LTcpServer *server = 0):
QThread(parent)
{
this->server = server;
}
protected:
void run() {
qDebug() << "started";
server->workWithIncomingConnection();
}
};
QSqlDatabase db; // clients in database
LTWorkWithClients* t_workWithClients;
QQueue<quintptr> clientsToBeAttached;
QList<LSSClient*> clients;
LResult workWithIncomingConnection ();
LResult serverInit ();
LResult createDatabase ();
static QTextStream& qStdout ();
void incomingConnection(qintptr socketDescriptor) Q_DECL_OVERRIDE;
protected:
private:
};
#endif // SERVERWORK_H
I know that this nested thread class is strongly wrong way to do this thing, but i don't have much time to do it correctly
// server-work.cpp [PART]
LResult LTcpServer::serverInit()
{
checkError;
db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName("serverDB");
if (!db.open()) {
qDebug() << "Error opening database...";
qDebug() << db.lastError().text();
return LVError;
} else {
qDebug() << "Database successfully opened";
}
if(!this->listen(QHostAddress::Any, 30000)){
qDebug() << "Error starting listening...";
return LVError;
} else {
qDebug() << "Start listening successfully";
}
t_workWithClients = new LTWorkWithClients(this, this);
t_workWithClients->start();
return LVSuccess;
}
void LTcpServer::incomingConnection(qintptr socketDescriptor)
{
qDebug() << Q_FUNC_INFO << " new connection";
clientsToBeAttached.enqueue(socketDescriptor);
qDebug() << "here1";
}
LResult LTcpServer::workWithIncomingConnection()
{
bool toExit = false;
while (!toExit) {
checkError;
qDebug() << "1";
if (clientsToBeAttached.length() != 0) {
quintptr eachClientDescriptor = clientsToBeAttached.dequeue();
qDebug() << "2";
LSSClient* client = new LSSClient(this);
client->server = this;
client->socket->setSocketDescriptor(eachClientDescriptor);
qDebug() << "3";
client->registered = false;
client->server = this;
qDebug() << client->socket->localAddress();
connect(client->socket, SIGNAL(readyRead()), client, SLOT(onSokReadyRead()));
connect(client->socket, SIGNAL(connected()), client, SLOT(onSokConnected()));
connect(client->socket, SIGNAL(disconnected()), client, SLOT(onSokDisconnected()));
connect(client->socket, SIGNAL(error(QAbstractSocket::SocketError)),client, SLOT(onSokDisplayError(QAbstractSocket::SocketError)));
clients.append(client);
}
usleep(1000000);
}
return LVSuccess;
}
So, server just keep writing 1 (nothing more) every second, but client says that it is connected to the server.

Answer 1

This structure might help...
in your ltcpserver.h file:
class LTcpServer : public QTcpServer
{
Q_OBJECT
public:
explicit LTcpServer(QObject * parent = 0);
void incomingConnection(qintptr socketDescriptor) Q_DECL_OVERRIDE;
private:
QThread *myThread;
};
and in your ltcpserver.cpp:
LTcpServer::LTcpServer(QObject * parent) : QTcpServer(parent)
{
if(this->listen(QHostAddress::Any,30000))
{
qDebug() << "server started...";
}
else
{
qDebug() << "server could not be started...";
}
myThread = new QThread();
myThread->start();
}
void LTcpServer::incomingConnection(qintptr socketDescriptor)
{
LSSClient * yourClient = new LSSClient(socketDescriptor);
yourClient->moveToThread(myThread);
clients->append(yourClient);
}
and in your lssclient.h
class LSSClient: public QObject
{
Q_OBJECT
public:
explicit LSSClient(qintptr socketDescriptor,QObject * parent = 0);
private:
void setupSocket(qintptr socketDescriptor);
QTcpSocket * socket;
public slots:
void readyRead();
void disconnected();
};
and in your lssclient.cpp
LSSClient::LSSClient(qintptr socketDescriptor,QObject * parent) : QObject(parent)
{
setupSocket(qintptr socketDescriptor);
}
void LSSClient::setupSocket(qintptr socketDescriptor)
{
socket = new QTcpSocket(this);
socket->setSocketDescriptor(sDescriptor);
connect(socket,SIGNAL(readyRead()),this,SLOT(readyRead()));
connect(socket,SIGNAL(disconnected()),this,SLOT(disconnected()));
}
void LSSClient::readyRead()
{
// do whatever you want here with incoming data
}
void LSSClient::disconnected()
{
// do what happens to client when disconnected
}