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transmission/qt/RpcClient.h

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/*
* This file Copyright (C) 2014-2016 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
*/
#pragma once
#include <memory>
#include <QFuture>
#include <QFutureInterface>
#include <QHash>
#include <QNetworkReply>
#include <QObject>
#include <QString>
#include <QUrl>
#include <libtransmission/transmission.h>
#include <libtransmission/quark.h>
#include <libtransmission/variant.h>
class QByteArray;
class QNetworkAccessManager;
typedef std::shared_ptr<tr_variant> TrVariantPtr;
Q_DECLARE_METATYPE(TrVariantPtr)
extern "C"
{
struct evbuffer;
struct tr_session;
}
struct RpcResponse
{
QString result;
TrVariantPtr args;
bool success = false;
QNetworkReply::NetworkError networkError = QNetworkReply::NoError;
};
Q_DECLARE_METATYPE(QFutureInterface<RpcResponse>)
// The response future -- the RPC engine returns one for each request made.
typedef QFuture<RpcResponse> RpcResponseFuture;
class RpcClient : public QObject
{
Q_OBJECT
public:
RpcClient(QObject* parent = nullptr);
virtual ~RpcClient()
{
}
void stop();
void start(tr_session* session);
void start(QUrl const& url);
bool isLocal() const;
QUrl const& url() const;
RpcResponseFuture exec(tr_quark method, tr_variant* args);
RpcResponseFuture exec(char const* method, tr_variant* args);
signals:
void httpAuthenticationRequired();
void dataReadProgress();
void dataSendProgress();
void networkResponse(QNetworkReply::NetworkError code, QString const& message);
private:
RpcResponseFuture sendRequest(TrVariantPtr json);
QNetworkAccessManager* networkAccessManager();
int64_t getNextTag();
void sendNetworkRequest(TrVariantPtr json, QFutureInterface<RpcResponse> const& promise);
void sendLocalRequest(TrVariantPtr json, QFutureInterface<RpcResponse> const& promise, int64_t tag);
int64_t parseResponseTag(tr_variant& response);
RpcResponse parseResponseData(tr_variant& response);
static void localSessionCallback(tr_session* s, tr_variant* response, void* vself);
private slots:
void networkRequestFinished(QNetworkReply* reply);
void localRequestFinished(TrVariantPtr response);
private:
tr_session* mySession;
QString mySessionId;
QUrl myUrl;
QNetworkAccessManager* myNAM;
QHash<int64_t, QFutureInterface<RpcResponse>> myLocalRequests;
int64_t myNextTag;
};