Allow to cancel download request

src/base/net/downloadmanager.cpp

@@ -121,6 +121,8 @@ namespace
         explicit DownloadHandlerImpl(const Net::DownloadRequest &downloadRequest, QObject *parent);
         ~DownloadHandlerImpl() override;
 
+        void cancel() override;
+
         QString url() const;
         const Net::DownloadRequest downloadRequest() const;
 
@@ -416,6 +418,17 @@ namespace
             delete m_reply;
     }
 
+    void DownloadHandlerImpl::cancel()
+    {
+        if (m_reply) {
+            m_reply->abort();
+        }
+        else {
+            setError(errorCodeToString(QNetworkReply::OperationCanceledError));
+            finish();
+        }
+    }
+
     void DownloadHandlerImpl::assignNetworkReply(QNetworkReply *reply)
     {
         Q_ASSERT(reply);

src/base/net/downloadmanager.h

@@ -104,6 +104,8 @@ namespace Net
     public:
         using QObject::QObject;
 
+        virtual void cancel() = 0;
+
     signals:
         void finished(const DownloadResult &result);
     };
@@ -118,6 +120,8 @@ namespace Net
         static void freeInstance();
         static DownloadManager *instance();
 
+        DownloadHandler *download(const DownloadRequest &downloadRequest);
+
         template <typename Context, typename Func>
         void download(const DownloadRequest &downloadRequest, Context context, Func &&slot);
 
@@ -137,7 +141,6 @@ namespace Net
     private:
         explicit DownloadManager(QObject *parent = nullptr);
 
-        DownloadHandler *download(const DownloadRequest &downloadRequest);
         void applyProxySettings();
         void handleReplyFinished(const QNetworkReply *reply);