Simple Http Get

[Nico AE]

Hello guys, I have a problem. I try get simple .txt content from my localhost "http://localhost/api/v1.txt" but I don't receive any signal from my connections.

//your code here
#ifndef REQUESTS_HPP
#define REQUESTS_HPP

#include <QObject>

#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QUrl>
#include <QUrlQuery>

class Requests : public QObject
{
    Q_OBJECT
public:
    explicit Requests(QObject *parent = 0);
    ~Requests()
    {
        delete m_reply;
    }

    void    setUrlServer(const QString& s) { urlServer = s; }
    void    setPostQueryData(const QString& key, const QString& value);

    void    requestByGet();
signals:

public slots:
    void    replyFinished(QNetworkReply* rply);

    void    rGet_read();
    void    rGet_end();
    void    rErrors(QNetworkReply::NetworkError errorT);
    void    rMetaChange();
    void    rRedictActivated(QUrl url);
    void    rSSlErrorsDetected(QList<QSslError> errors);

private:
    QUrlQuery       hpost_dataQuery;
    QUrl            urlServer;
    // -- NETWORK
    QNetworkAccessManager   m_manager;
    QNetworkReply           *m_reply;
};

#endif // REQUESTS_HPP

Implementation

//your code here
#include "requests.hpp"

Requests::Requests(QObject *parent) : QObject(parent)
{

    m_reply = nullptr;

    //connect(m_manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyFinished(QNetworkReply*)));

}

void Requests::setPostQueryData(const QString &key, const QString &value)
{
    hpost_dataQuery.addQueryItem(key, value);
}

void Requests::requestByGet()
{
    QNetworkRequest __request;

    __request.setUrl(urlServer);

    m_reply = m_manager.get(__request);
    qDebug() << "getting from url: " << urlServer.toString();

    connect(m_reply, SIGNAL(readyRead()), SLOT(rGet_read()));
    connect(m_reply, SIGNAL(finished()), SLOT(rGet_end()));
    connect(m_reply, SIGNAL(error(QNetworkReply::NetworkError)), SLOT(rErrors(QNetworkReply::NetworkError)));
    connect(m_reply, SIGNAL(metaDataChanged()), SLOT(rMetaChange()));
    connect(m_reply, SIGNAL(redirected(QUrl)), SLOT(rRedictActivated(QUrl)));
    connect(m_reply, SIGNAL(sslErrors(QList<QSslError>)), SLOT(rSSlErrorsDetected(QList<QSslError>)));
}

void Requests::replyFinished(QNetworkReply *rply)
{
    if(rply->error() == QNetworkReply::NoError)
    {
        int http_statusCode = rply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toUInt();

        if(http_statusCode >= 200 && http_statusCode < 300)
        {
            if(rply->isReadable())
            {
                QString ReplyString = QString::fromUtf8(rply->readAll());

#ifdef _DEBUG
                qDebug() << ReplyString;
#endif
            }
        }
        else if(http_statusCode >= 300 && http_statusCode < 400)
        {
            // Get the redirection url
            QUrl NewUrl = rply->attribute(QNetworkRequest::RedirectionTargetAttribute).toUrl();

            // Because the redirection url can be relative, we have to use
            // prevous one to resolve it
            NewUrl = rply->url().resolved(NewUrl);

            QNetworkAccessManager *tManager = rply->manager();
            QNetworkRequest tRedirection(NewUrl);

            tManager->get(tRedirection);

            return; // to keep the manager for the next request
        }
        else
        {
            qDebug() << "Error on reply finished.";
        }
    }

    rply->deleteLater();
}

void Requests::rGet_read()
{
    qDebug() << "rr";
}

void Requests::rGet_end()
{
    qDebug() << "fim\n";
}

void Requests::rErrors(QNetworkReply::NetworkError errorT)
{
    qDebug() << errorT;
}

void Requests::rMetaChange()
{
    qDebug() << "Meta changed...";
}

void Requests::rRedictActivated(QUrl url)
{
    qDebug() << "Received redirect: " << url.toString();
}

void Requests::rSSlErrorsDetected(QList<QSslError> errors)
{
    qDebug() << "Received ssl errors";
}

Someone have any idea why i don't receive any signal?

[VRonin]

You are missing the receiver argument in connects.
connect(m_reply, SIGNAL(readyRead()), SLOT(rGet_read())); should become connect(m_reply, SIGNAL(readyRead()), this,SLOT(rGet_read()));
if you used the new connect syntax it would detect this kind of things at compile time

[Nico AE]

Unfortunaly no, i changed my connections and not receive any signal.

//your code here
connect(m_reply, SIGNAL(readyRead()), this, SLOT(rGet_read()));
    connect(m_reply, SIGNAL(finished()), this, SLOT(rGet_end()));

[VRonin]

does connect return true?