qnetworkreply.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QNETWORKREPLY_H
#define QNETWORKREPLY_H
 
#include <QtNetwork/qtnetworkglobal.h>
#include <QtCore/QIODevice>
#include <QtCore/QString>
#include <QtCore/QVariant>
 
#include <QtNetwork/QNetworkRequest>
#include <QtNetwork/QNetworkAccessManager>
 
QT_BEGIN_NAMESPACE
 
 
class QUrl;
class QVariant;
class QAuthenticator;
class QSslConfiguration;
class QSslError;
class QSslPreSharedKeyAuthenticator;
 
class QNetworkReplyPrivate;
class Q_NETWORK_EXPORT QNetworkReply: public QIODevice
{
    Q_OBJECT
public:
    enum NetworkError {
        NoError = 0,
 
        // network layer errors [relating to the destination server] (1-99):
        ConnectionRefusedError = 1,
        RemoteHostClosedError,
        HostNotFoundError,
        TimeoutError,
        OperationCanceledError,
        SslHandshakeFailedError,
        TemporaryNetworkFailureError,
        NetworkSessionFailedError,
        BackgroundRequestNotAllowedError,
        TooManyRedirectsError,
        InsecureRedirectError,
        UnknownNetworkError = 99,
 
        // proxy errors (101-199):
        ProxyConnectionRefusedError = 101,
        ProxyConnectionClosedError,
        ProxyNotFoundError,
        ProxyTimeoutError,
        ProxyAuthenticationRequiredError,
        UnknownProxyError = 199,
 
        // content errors (201-299):
        ContentAccessDenied = 201,
        ContentOperationNotPermittedError,
        ContentNotFoundError,
        AuthenticationRequiredError,
        ContentReSendError,
        ContentConflictError,
        ContentGoneError,
        UnknownContentError = 299,
 
        // protocol errors
        ProtocolUnknownError = 301,
        ProtocolInvalidOperationError,
        ProtocolFailure = 399,
 
        // Server side errors (401-499)
        InternalServerError = 401,
        OperationNotImplementedError,
        ServiceUnavailableError,
        UnknownServerError = 499
    };
    Q_ENUM(NetworkError)
 
    ~QNetworkReply();
 
    // reimplemented from QIODevice
    virtual void close() override;
    virtual bool isSequential() const override;
 
    // like QAbstractSocket:
    qint64 readBufferSize() const;
    virtual void setReadBufferSize(qint64 size);
 
    QNetworkAccessManager *manager() const;
    QNetworkAccessManager::Operation operation() const;
    QNetworkRequest request() const;
    NetworkError error() const;
    bool isFinished() const;
    bool isRunning() const;
    QUrl url() const;
 
    // "cooked" headers
    QVariant header(QNetworkRequest::KnownHeaders header) const;
 
    // raw headers:
    bool hasRawHeader(const QByteArray &headerName) const;
    QList<QByteArray> rawHeaderList() const;
    QByteArray rawHeader(const QByteArray &headerName) const;
 
    typedef QPair<QByteArray, QByteArray> RawHeaderPair;
    const QList<RawHeaderPair>& rawHeaderPairs() const;
 
    // attributes
    QVariant attribute(QNetworkRequest::Attribute code) const;
 
#if QT_CONFIG(ssl)
    QSslConfiguration sslConfiguration() const;
    void setSslConfiguration(const QSslConfiguration &configuration);
    void ignoreSslErrors(const QList<QSslError> &errors);
#endif
 
public Q_SLOTS:
    virtual void abort() = 0;
    virtual void ignoreSslErrors();
 
Q_SIGNALS:
    void socketStartedConnecting();
    void requestSent();
    void metaDataChanged();
    void finished();
    void errorOccurred(QNetworkReply::NetworkError);
#if QT_CONFIG(ssl)
    void encrypted();
    void sslErrors(const QList<QSslError> &errors);
    void preSharedKeyAuthenticationRequired(QSslPreSharedKeyAuthenticator *authenticator);
#endif
    void redirected(const QUrl &url);
    void redirectAllowed();
 
    void uploadProgress(qint64 bytesSent, qint64 bytesTotal);
    void downloadProgress(qint64 bytesReceived, qint64 bytesTotal);
 
protected:
    explicit QNetworkReply(QObject *parent = nullptr);
    QNetworkReply(QNetworkReplyPrivate &dd, QObject *parent);
    virtual qint64 writeData(const char *data, qint64 len) override;
 
    void setOperation(QNetworkAccessManager::Operation operation);
    void setRequest(const QNetworkRequest &request);
    void setError(NetworkError errorCode, const QString &errorString);
    void setFinished(bool);
    void setUrl(const QUrl &url);
    void setHeader(QNetworkRequest::KnownHeaders header, const QVariant &value);
    void setRawHeader(const QByteArray &headerName, const QByteArray &value);
    void setAttribute(QNetworkRequest::Attribute code, const QVariant &value);
 
#if QT_CONFIG(ssl)
    virtual void sslConfigurationImplementation(QSslConfiguration &) const;
    virtual void setSslConfigurationImplementation(const QSslConfiguration &);
    virtual void ignoreSslErrorsImplementation(const QList<QSslError> &);
#endif
 
private:
    Q_DECLARE_PRIVATE(QNetworkReply)
};
 
QT_END_NAMESPACE
 
QT_DECL_METATYPE_EXTERN_TAGGED(QNetworkReply::NetworkError,
                               QNetworkReply__NetworkError, Q_NETWORK_EXPORT)
 
#endif