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FTP access with Qt 5.3

  • Okay, I've tried to avoid asking this question but I simply cannot wrap my head around how to work with a ftp site and use QNetworkAccessManager. Qt's documentation explains how to use the classes is pieces. But doesn't have a good example that shows how to use them together.

    Part of the confusion lies in the fact that apparently in Qt 5 they no longer support QFtp--or at least discourage us from using it. But every example I can find uses QFtp!

    So my basic starting point is, I wanted to log into my ftp site and just get a list of files from a given directory, how is this done with QNetworkAccessManager? Here's what I've done so far. But clearly, this isn't executing a pwd command. Not sure where that even occurs...

    // Header

    #include <QObject>
    #include <QNetworkAccessManager>

    class QNetworkReply;
    class QNetworkAccessManager;
    class NetworkManager : public QObject
    QNetworkAccessManager m_netman;

    explicit NetworkManager(QObject *parent = 0);

    bool ftpTester();


    public slots:
    void replyFinished(QNetworkReply *_reply);


    #endif // NETWORKMANAGER_H

    // Cpp
    @#include "NetworkManager.h"
    #include <QNetworkRequest>
    #include <QNetworkReply>
    #include <QUrl>
    #include <Underworld/Base/NStatus.h>

    NetworkManager::NetworkManager(QObject parent) :
    connect(&m_netman, SIGNAL(finished(QNetworkReply
    this, SLOT(replyFinished(QNetworkReply*)));


    bool NetworkManager::ftpTester()
    QNetworkRequest request(QUrl("ftp://<username>:<password>"));
    return false;

    void NetworkManager::replyFinished(QNetworkReply *_reply)
    if( _reply->error())
    NStatus::nowError("Unable to get to ftp site.");
    } else {

    any direction, tutorials I can read or any code samples would be appreciated!

  • Moderators

    For the time being you can only use put() and get() when accessing ftp with QNetworkAccessManager ie. upload or download a file assuming you know the path beforehand. To use commands like "PWD" or "LIST" you would have to go a level down, to a QTcpSocket I suppose.

  • There is also "QtFtp": which is referred "here":
    You can see in the example how to use QNetworkAccessManager as QFtp used to be. Alternatively, you can use the easy route and use the compatibility class directly.

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