6

尝试在全局线程池的新线程中处理连接的客户端套接字：

m_threadPool = QThreadPool::globalInstance();

void TCPListenerThread::onNewConnection()
{
    QTcpSocket *clientSocket = m_tcpServer->nextPendingConnection();
    clientSocket->localPort();
    m_connectThread = new TCPConnectThread(clientSocket);
    m_threadPool->start(m_connectThread);
}

这是TCPConnectThread： 

class TCPConnectThread : public QRunnable {
    TCPConnectThread::TCPConnectThread(QTcpSocket *_socket)
    {
        m_socket = _socket;
        this->setAutoDelete(false);
    }


    void TCPConnectThread::run()
    {
        if (! m_socket->waitForConnected(-1) )
            qDebug("Failed to connect to client");
        else
            qDebug("Connected to %s:%d %s:%d", m_socket->localAddress(), m_socket->localPort(), m_socket->peerAddress(), m_socket->peerPort());

        if (! m_socket->waitForReadyRead(-1))
            qDebug("Failed to receive message from client") ;
        else
            qDebug("Read from client: %s",   QString(m_socket->readAll()).toStdString().c_str());

        if (! m_socket->waitForDisconnected(-1))
            qDebug("Failed to receive disconnect message from client");
        else
            qDebug("Disconnected from client");
    }
}

我一直在这些错误中遇到无穷无尽的错误。似乎跨线程QTcpSocket处理是不可行的（见迈克尔的回答）。

一些错误： 

QSocketNotifier: socket notifiers cannot be disabled from another thread  

ASSERT failure in QCoreApplication::sendEvent: "Cannot send events t objects owned by a different thread.

我应该QTcpSocket在不同的线程中处理吗？
如果我想QTcpSocket在不同的线程中处理，我该怎么办？
或者有没有办法QTcpSocket从文件描述符创建一个？

4

1 回答 1

8

我认为此页面包含您的答案：

如果您想在另一个线程中将传入连接作为新的 QTcpSocket 对象处理，您必须将 socketDescriptor 传递给另一个线程并在那里创建 QTcpSocket 对象并使用其 setSocketDescriptor() 方法。

为此，您必须继承QTcpServer并覆盖虚拟方法incomingConnection。

QTcpSocket在该方法中，创建将为子套接字创建新的子线程。

例如：

class MyTcpServer : public QTcpServer
{
protected:
    virtual void incomingConnection(int socketDescriptor)
    {
         TCPConnectThread* clientThread = new TCPConnectThread(socketDescriptor);
         // add some more code to keep track of running clientThread instances...
         m_threadPool->start(clientThread);
    }
};

class TCPConnectThread : public QRunnable
{
private:    
    int m_socketDescriptor;
    QScopedPointer<QTcpSocket> m_socket;

public:
    TCPConnectionThread(int socketDescriptor)
        : m_socketDescriptor(socketDescriptor)
    {
        setAutoDelete(false);
    }

protected:    
    void TCPConnectThread::run()
    {
        m_socket.reset(new QTcpSocket());
        m_socket->setSocketDescriptor(m_socketDescriptor);

        // use m_socket
    }
};

或者尝试moveToThread()在socket上使用。

于 2013-06-03T12:14:33.017 回答