Merge lp:~gary-wzl77/mcloud/storage-framework-v2 into lp:mcloud/devel

[Gary.Wang]

1. adapted to storage-fw client v2 API(Fixed: 1638439).
2. add missing dependency(account-plugin-mcloud)
3. generate job upload id with uuid.
4. use new service name to avoid conflict with mcloud-scope.
5. Ignore SIGPIPE in case of downloader is canceled when downloading(Fixed: 1641541).
6.bump version up due to ABI changed.

1. adapted to storage-fw client v2 API(Fixed: 1638439).
2. add missing dependency(account-plugin-mcloud)
3. generate job upload id with uuid.
4. use new service name to avoid conflict with mcloud-scope.
5. Ignore SIGPIPE in case of downloader is canceled when downloading(Fixed: 1641541).
6.bump version up due to ABI changed.

[unity-api-1-bot (unity-api-1-bot)]

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review: Approve (continuous-integration)

[lp:~gary-wzl77/mcloud/storage-framework-v2]

28. By Gary.Wang on 2016-11-21

1. merge from devel
2. add storage quota test case for code coverage purpose.

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[lp:~gary-wzl77/mcloud/storage-framework-v2]

29. By Gary.Wang on 2016-12-07

1.fixed mcloud provider installation path and exec path in dbus service.
2.add prefix name(mcloud) for non-standard metadata.

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review: Needs Fixing (continuous-integration)

[lp:~gary-wzl77/mcloud/storage-framework-v2]

30. By Gary.Wang on 2016-12-07

Fixed gtest sign-compare warning.

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Unmerged revisions

30. By Gary.Wang on 2016-12-07

Fixed gtest sign-compare warning.

29. By Gary.Wang on 2016-12-07

1.fixed mcloud provider installation path and exec path in dbus service.
2.add prefix name(mcloud) for non-standard metadata.

28. By Gary.Wang on 2016-11-21

1. merge from devel
2. add storage quota test case for code coverage purpose.

27. By Gary.Wang on 2016-11-18

1.update dbus type signature to fit for online-account-api ABI change.
2.libstorage-framework-qt-client-2-0 package is not added into depends of storage-framework-client-dev. add it into build-depends in onedrive debian/control file to avoid linking error.

26. By Gary.Wang on 2016-11-14

* adapted to storage-fw client v2 API(Fixed: 1638439).
* use new service name to avoid conflict with mcloud-scope.
* Ignore SIGPIPE in case of downloader is canceled when downlaoding(Fixed: 1641541).

25. By Gary.Wang on 2016-11-03

update onedrive account service id in fake daemon.

24. By Gary.Wang on 2016-11-03

update account service id.

23. By Gary.Wang on 2016-11-03

Add provider desktop, service as well as application file. Get rid of old service id.

22. By Gary.Wang on 2016-11-02

simplify the test cases.

21. By Gary.Wang on 2016-11-02

add more unit tests(delete, update, list_invalid).

=== modified file 'data/mcloud.pc.in'
--- data/mcloud.pc.in	2016-04-20 04:19:28 +0000
+++ data/mcloud.pc.in	2016-12-07 12:44:11 +0000
@@ -4,7 +4,7 @@
 includedir=${exec_prefix}/include
  
 Name: @CMAKE_PROJECT_NAME@
-Description: Cloud based content sharing library for CMCC mcloud service
+Description: A cloud based content sharing library for CMCC mcloud service
 Version: @MCLOUD_LIB_VERSION_MAJOR@.@MCLOUD_LIB_VERSION_MINOR@.@MCLOUD_LIB_VERSION_PATCH@
 Libs: -L${libdir} -lmcloud
 Cflags: -I${includedir}

=== modified file 'debian/changelog'
--- debian/changelog	2016-10-26 09:19:14 +0000
+++ debian/changelog	2016-12-07 12:44:11 +0000
@@ -1,10 +1,20 @@
 mcloud (2.0.0-0ubuntu1) UNRELEASED; urgency=medium
 
   [ Gary.Wzl]
+  * adapted to storage-fw client v2 API(Fixed: 1638439).
   * add missing dependency(account-plugin-mcloud)
   * generate job upload id with uuid.
-
- -- Gary.Wang <[e-mail]>  Wed, 26 Oct 2016 16:58:11 +0800
+  * use new service name to avoid conflict with mcloud-scope.
+  * Ignore SIGPIPE in case of downloader is canceled when downlaoding(Fixed: 1641541).
+
+ -- Gary.Wang <[e-mail]>  Fri, 18 Nov 2016 15:02:11 +0800
+
+mcloud (1.0.0+17.04.20161107.3-0ubuntu1) zesty; urgency=medium
+
+  * Update to compile with Boost 1.62 (as found on zesty) and storage-
+    framework 0.2.
+
+ -- James Henstridge <[e-mail]>  Mon, 07 Nov 2016 02:02:55 +0000
 
 mcloud (1.0.0+16.10.20160927.3-0ubuntu1) yakkety; urgency=medium
 

=== modified file 'debian/control'
--- debian/control	2016-09-29 10:10:59 +0000
+++ debian/control	2016-12-07 12:44:11 +0000
@@ -20,17 +20,19 @@
                libtinyxml2-dev,
                libssl-dev,
                libprocess-cpp-dev,
-               storage-framework-provider-dev,
+               storage-framework-provider-dev (>= 0.2),
+               storage-framework-client-dev (>= 0.2),
                pkg-config,
                python-tornado,
                libonline-accounts-qt-dev,
-               libqtdbustest1-dev,
                qtbase5-dev,
                qtbase5-dev-tools,
                python3-dbus,
                python3-gi,
-               libglib2.0-dev,
                lsb-release,
+# libstorage-framework-qt-client-2-0 package is not added into Depends of storage-framework-client-dev
+# add the package to avoid linking error.
+               libstorage-framework-qt-client-2-0, 
 Standards-Version: 3.9.5
 Section: libs
 Homepage: https://launchpad.net/mcloud
@@ -46,7 +48,7 @@
          account-plugin-mcloud,
 Description: A C++ library for open API of cmcc mcloud service
  Mcloud API provides developers easily access to authenticated
- user's cmcc mcloud resources.
+ user's cmcc mcloud resources and a storage provider.
  .
  This package includes the mcloud runtime libraries.
 
@@ -59,7 +61,7 @@
          ${misc:Depends},
 Description: A C++ library for open API of cmcc mcloud service
  Mcloud API provides developers easily access to authenticated
- user's cmcc mcloud resources.
+ user's cmcc mcloud resources and a storage provider.
  .
  This package includes all the development headers and libraries for
  mcloud.
@@ -71,6 +73,6 @@
 Suggests: libmcloud-dev,
 Description: A C++ library for open API of cmcc mcloud service
  Mcloud API provides developers easily access to authenticated
- user's cmcc mcloud resources.
+ user's cmcc mcloud resources and a storage provider.
  .
  This package includes documentation files for libmcloud development.

=== modified file 'debian/control.in'
--- debian/control.in	2016-09-29 10:10:59 +0000
+++ debian/control.in	2016-12-07 12:44:11 +0000
@@ -15,17 +15,20 @@
                libtinyxml2-dev,
                libssl-dev,
                libprocess-cpp-dev,
-               storage-framework-provider-dev,
+               storage-framework-provider-dev  (>= 0.2),
+               storage-framework-client-dev (>= 0.2),
                pkg-config,
                python-tornado,
                libonline-accounts-qt-dev,
-               libqtdbustest1-dev,
                qtbase5-dev,
                qtbase5-dev-tools,
                python3-dbus,
                python3-gi,
-               libglib2.0-dev,
                lsb-release,
+               libqtdbustest1-dev,
+# libstorage-framework-qt-client-2-0 package is not added into Depends of storage-framework-client-dev
+# add the package to avoid linking error.
+               libstorage-framework-qt-client-2-0, 
 Standards-Version: 3.9.5
 Section: libs
 Homepage: https://launchpad.net/mcloud
@@ -41,9 +44,9 @@
          account-plugin-mcloud,
 Description: A C++ library for open API of cmcc mcloud service
  Mcloud API provides developers easily access to authenticated
- user's cmcc mcloud resources.
+ user's cmcc mcloud resources and a storage provider.
  .
- This package includes the mcloud runtime libraries.
+ This package includes the mcloud runtime libraries and a storage provider.
 
 Package: libmcloud-dev
 Section: libdevel
@@ -54,7 +57,7 @@
          ${misc:Depends},
 Description: A C++ library for open API of cmcc mcloud service
  Mcloud API provides developers easily access to authenticated
- user's cmcc mcloud resources.
+ user's cmcc mcloud resources and a storage provider.
  .
  This package includes all the development headers and libraries for
  mcloud.
@@ -66,6 +69,6 @@
 Suggests: libmcloud-dev,
 Description: A C++ library for open API of cmcc mcloud service
  Mcloud API provides developers easily access to authenticated
- user's cmcc mcloud resources.
+ user's cmcc mcloud resources and a storage provider.
  .
  This package includes documentation files for libmcloud development.

=== modified file 'debian/libmcloud1.install'
--- debian/libmcloud1.install	2016-10-26 09:19:14 +0000
+++ debian/libmcloud1.install	2016-12-07 12:44:11 +0000
@@ -1,3 +1,6 @@
 usr/lib/*/lib*.so.*
 usr/bin/*
 usr/share/dbus-1/services/*
+usr/share/accounts/services/*
+usr/share/accounts/applications/*
+usr/share/applications/*

=== modified file 'debian/libmcloud2.install'
--- debian/libmcloud2.install	2016-10-26 09:19:14 +0000
+++ debian/libmcloud2.install	2016-12-07 12:44:11 +0000
@@ -1,3 +1,6 @@
 usr/lib/*/lib*.so.*
-usr/bin/*
+usr/lib/*/mcloud/*
 usr/share/dbus-1/services/*
+usr/share/accounts/services/*
+usr/share/accounts/applications/*
+usr/share/applications/*

=== modified file 'debian/rules'
--- debian/rules	2016-09-17 14:21:57 +0000
+++ debian/rules	2016-12-07 12:44:11 +0000
@@ -1,6 +1,8 @@
 #!/usr/bin/make -f
 # -*- makefile -*-
 
+export QT_SELECT=qt5
+
 export DPKG_GENSYMBOLS_CHECK_LEVEL=4
 
 include /usr/share/dpkg/default.mk

=== modified file 'doc/Doxyfile.in'
--- doc/Doxyfile.in	2016-04-15 07:55:24 +0000
+++ doc/Doxyfile.in	2016-12-07 12:44:11 +0000
@@ -38,7 +38,7 @@
 # for a project that appears at the top of each page and should give viewer
 # a quick idea about the purpose of the project. Keep the description short.
 
-PROJECT_BRIEF          = "MCloud API library for cmcc cloud service"
+PROJECT_BRIEF          = "An open API library for cmcc cloud service and a storage provider"
 
 # With the PROJECT_LOGO tag one can specify an logo or icon that is
 # included in the documentation. The maximum height of the logo should not

=== modified file 'include/mcloud/api/client.h'
--- include/mcloud/api/client.h	2016-10-26 08:50:32 +0000
+++ include/mcloud/api/client.h	2016-12-07 12:44:11 +0000
@@ -73,7 +73,7 @@
     typedef std::vector<std::string>    Stringlist;
 
     /*!
-     * \brief Constructs a Mcloud Client object with \a request_timeout seconds.
+     * \brief Constructs the Mcloud Client object with \a request_timeout seconds.
      * Meanwhile client launches sync-up manager to deal with task download and upload by default.
      */
     Client(int request_timeout = 10);
@@ -85,43 +85,46 @@
     virtual ~Client();
 
     /*!
-     * \brief Set \a access_token to authenticate all mcloud API calls with the bearer HTTP authorization scheme.
+     * \brief Set the \a access_token to authenticate all mcloud API calls with the bearer HTTP authorization scheme.
      * The access token can be fetched through ubuntu sso services.
+     * \sa refresh_token.
      */
     void set_access_token(const std::string& access_token);
 
     /*!
-     * \brief Retrieves and refreshes access token by using \a refresh_token.
+     * \brief Retrieves and refreshes access token by using the \a refresh_token.
      * The refresh token can be fetched through ubuntu sso services.
-     * \throw std::runtime_error if error occurs.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
      * \returns true if access token is refreshed, otherwise returns false.
+     * \sa set_access_token.
      */
     bool refresh_token(const std::string& refresh_token);
 
     /*!
-     * \brief Returns login user's clcoud storage info.
-     * \throw std::runtime_error if error occurs.
-     * @sa DiskInfo
+     * \brief Returns the login user's clcoud storage info.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
+     * \sa DiskInfo
      */
     DiskInfo::Ptr disk_info();
 
     /*!
-     * \brief Returns root folder id on mlcoud for third-party app to use, such as mcloud-lib.
-     * \throw std::runtime_error if error occurs.
-     * \note there're a few folders on a cmcc user's mcloud directory, but only one can be used for
+     * \brief Returns the root folder id on mlcoud.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
+     * \note there're a few folders on a cmcc user's root directory, but only one can be used for
      * content synchronization by third-party client. We regard it as the root folder for mcloud thrid-party app.
-     * \sa cloud_content_list()
+     * \sa cloud_content_list().
      */
-    std::string cloud_root_folder_id();
+    std::string root_folder_id();
 
     /*!
-     * \brief Returns a cloud item list under one specific folder \a folder_id with a given type \a content_type.
-     * if \a folder_id is empty, returns contents under root folder of cloud. \a content_type is
-     * CloudContent::Type::All by default. The fetched content count is 200 at most per call.
-     * \a start_index indicates the first index of the requested content list on mcloud.
-     * \a count indicates the maximum number of content items per call.
-     * \throw std::runtime_error if error occurs.
-     * \sa CloudContent::Type cloud_root_folder_id()
+     * \brief Returns the cloud item list under one specific folder \a folder_id with a given type \a content_type.
+     * if the \a folder_id is empty, returns contents under root folder of mcloud. 
+     * The \a content_type is CloudContent::Type::All by default. 
+     * The fetched content count is 200 at most per call.
+     * The \a start_index indicates the first index of the requested content list on mcloud.
+     * The \a count indicates the maximum number of content items per call.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
+     * \sa CloudContent::Type root_folder_id().
      */
     ResourceList cloud_content_list(int start_index,
                                     int count,
@@ -129,27 +132,28 @@
                                     const std::string& folder_id = std::string());
 
     /*!
-     * \brief Returns a cloud content object if a content \a content_id exists on mcloud.
+     * \brief Returns the cloud content object if the content with a given \a content_id exists on mcloud.
+     * It contains all available metadata
      * otherwise return nullptr.
-     * \throw std::runtime_error if error occurs.
-     * \sa delete_contents(), move_items()
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
+     * \sa delete_contents(), move_items().
      */
     CloudContent::Ptr   content_info(const std::string& content_id);
 
     /*!
-     * \brief Returns a cloud folder object if a folder with \a folder_name is created under a given \a folder_id folder.
+     * \brief Returns the cloud folder object if the folder with a given \a folder_name is created under a given \a folder_id folder.
      * otherwise return nullptr.
-     * \throw std::runtime_error if error occurs.
-     * \sa delete_contents(), move_items()
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
+     * \sa delete_contents(), move_items().
      */
     CloudFolder::Ptr    create_folder(const std::string& folder_name,
                                       const std::string& folder_id);
 
     /*!
-     * \brief Returns a cloud item list if there are available items that matches with \a name under a given \a folder_id folder.
+     * \brief Returns the cloud item list if there are available items that matches with the \a name under a given \a folder_id folder.
      * \a property holds the property of cloud item, it can be content(default) or folder.
-     * \throw std::runtime_error if error occurs.
-     * \sa delete_contents(), move_items(), metadata()
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
+     * \sa delete_contents(), move_items(), metadata().
      */
 
     [[gnu::deprecated("cmcc closes this api for security reason")]]
@@ -159,73 +163,74 @@
 
     /*!
      * \brief Creates folders sharing url object with a given \a folder_ids.
-     * \throw std::runtime_error if error occurs.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
      * \sa create_content_sharing_url()
-     * \return a list of Outlink after sharing urls are created.
+     * \return the list of Outlink if sharing urls are created.
      */
     OutlinkList create_folder_sharing_url(const Stringlist& folder_ids);
 
     /*!
      * \brief Creates a content_sharing url object with a given \a content_ids.
-     * \throw std::runtime_error if error occurs.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
      * \sa create_folder_sharing_url()
-     * \return a list of Outlink after sharing urls are created.
+     * \return a list of Outlink if sharing urls are created.
      */
     OutlinkList create_content_sharing_url(const Stringlist& content_ids);
 
     /*!
-     * \brief Returns folder id list if folders \a folder_ids are copies to another folder with a given \a folder_id on mcloud
-     * \throw std::runtime_error if error occurs.
+     * \brief Returns the folder id list if folders \a folder_ids are copies to another folder with a given \a folder_id on mcloud.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
      * \note the destination folder \a folder_id should not be the same as the folders' \a folder_ids folder ids.
-     * \sa move_items(), update_folder(), copy_contents()
+     * \sa move_items(), update_folder(), copy_contents().
      */
     Client::Stringlist copy_folders(const Stringlist&  folder_ids,
                                     const std::string& folder_id);
 
     /*!
-     * \brief Returns content id list if contents \a content_ids are copies to another folder with a given \a folder_id on mcloud.
-     * \throw std::runtime_error if error occurs.
+     * \brief Returns the content id list if contents \a content_ids are copies to another folder with a given \a folder_id on mcloud.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
      * \note the destination folder \a folder_id should not be the same as the contents' \a contents_ids folder id.
-     * \sa move_items(), update_folder(), copy_folders()
+     * \sa move_items(), update_folder(), copy_folders().
      */
     Client::Stringlist copy_contents(const Stringlist&  contents_ids,
                                      const std::string& folder_id);
 
     /*!
-     * \brief Returns true if \a folders with a given folder_ids and \a contents with a given \a content_ids
+     * \brief Returns true if the folders with a given \a folder_ids and the contents with a given \a content_ids 
      * are successfully moved to new folder with a given \a folder_id.
-     * \throw std::runtime_error if error occurs.
-     * \sa delete_contents(), copy_folders(), copy_contents()
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
+     * \sa delete_contents(), copy_folders(), copy_contents().
      */
     bool move_items(const Stringlist& folder_ids,
                     const Stringlist& content_ids,
                     const std::string& folder_id);
 
     /*!
-     * \brief Returns true if folder \a folder_id are updated with \a new_folder_name, otherwise return false.
-     * \throw std::runtime_error if error occurs.
-     * \sa delete_contents(), copy_folders(),
+     * \brief Returns true if the folder \a folder_id are updated with a given \a new_folder_name, otherwise return false.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
+     * \sa delete_contents(), copy_folders().
      */
     bool update_folder(const std::string& folder_id,
                        const std::string& new_folder_name);
 
     /*!
-     * \brief Returns true if contents \a content_ids are deleted, otherwise return false.
-     * \throw std::runtime_error if error occurs.
-     * \sa move_items(), content_info(), copy_contents()
+     * \brief Returns true if the contents with a given \a content_ids are deleted, otherwise return false.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
+     * \sa move_items(), content_info(), copy_contents().
      */
     bool delete_contents(const Stringlist& content_ids);
 
     /*!
-     * \brief Returns true if a local file \a file_path exists in folder with \a folder_id on cloud,
-     * otherwise return false. Searches root folder if folder_id is empty();
-     * \throw std::runtime_error if error occurs.
+     * \brief Mcloud provides a way to compare the file's sum of md5 with existing files under \a folder_id. Returns true if the same file content can be found on mcloud.
+     * otherwise return false. 
+     * \note if the \a folder_id is empty, checks if the local file exists in root folder.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
      */
     bool exist_on_cloud(const std::string& file_path,
                         const std::string& folder_id = std::string());
 
     /*!
-     * \brief Returns a sync-up manager running on the background.
+     * \brief Returns the sync-up manager running on the background.
      * sync-up manager scheduled tasks \sa start, pause, cancel for content upload and download.
      */
     SyncManager::Ptr syncmanager() const;

=== modified file 'include/mcloud/api/cloudcontent.h'
--- include/mcloud/api/cloudcontent.h	2016-10-26 08:50:32 +0000
+++ include/mcloud/api/cloudcontent.h	2016-12-07 12:44:11 +0000
@@ -23,7 +23,7 @@
 #include <mcloud/api/visibility.h>
 
 namespace tinyxml2 {
-class XMLElement;
+    class XMLElement;
 }
 
 namespace mcloud {
@@ -32,7 +32,7 @@
 /*!
     \class CloudContent
     \brief CloudContent represents a content object on mcloud.
-     the supported content type can be found \sa CloudContent::Type
+     the supported content types can be found \sa CloudContent::Type
  */
 
 class MCLOUD_API_DLL_PUBLIC CloudContent: public CloudResource {
@@ -40,7 +40,7 @@
     typedef std::shared_ptr<CloudContent> Ptr;
 
     /*!
-     * \brief All Content type .
+     * \brief All Content type.
      */
     enum class Type {
         All,        ///< all kinds of content type
@@ -56,85 +56,87 @@
     ~CloudContent();
 
     /*!
-     * \brief Returns a unique id of cloud content object.
+     * \brief Returns the content's a unique id on mcloud.
      */
-    const std::string& id() const override;
+    const std::string &id() const override;
 
     /*!
-     * \brief Returns the name of cloud content object.
+     * \brief Returns the content's display name on mcloud.
      */
-    const std::string& name() const override;
+    const std::string &name() const override;
 
     /*!
      * \brief Returns the datetime when content was created.
      */
-    const std::time_t& created_date() const override;
+    const std::time_t &created_date() const override;
 
     /*!
      * \brief Returns the datetime when content was updated.
      */
-    const std::time_t& updated_date() const override;
-
-    /*!
-     * \brief Returns a unique parent folder id of cloud content object.
-     */
-    const std::string& parent_catalog_id() const override;
-
-    /*!
-     * \brief Returns etag of a content object.
-     */
-    const std::string& etag() const override;
-
-    /*!
-     * \brief Returns owner id of a content object.
-     */
-    const std::string& owner() const override;
-
-    /*!
-     * \brief Returns resource type of an object.
+    const std::time_t &updated_date() const override;
+
+    /*!
+     * \brief Returns the content's unique parent folder id.
+     */
+    const std::string &parent_catalog_id() const override;
+
+    /*!
+     * \brief Returns the content's etag.
+     */
+    const std::string &etag() const override;
+
+    /*!
+     * \brief Returns the content's owner id.
+     */
+    const std::string &owner() const override;
+
+    /*!
+     * \brief Returns the content's resource type.
+     * \sa CloudResource::Property.
      */
     CloudResource::Property property() const override;
 
     /*!
-     * \brief Returns extension of a content object.
+     * \brief Returns the content's file extension.
      */
-    const std::string& suffix() const;
+    const std::string &suffix() const;
 
     /*!
-     * \brief Returns content type of an object.
+     * \brief Returns the content's type.
+     * \sa Content::Type.
      */
     Type type() const;
 
     /*!
-     * \brief Returns content size of an object in bytes.
+     * \brief Returns the content' size.
      */
     int64_t content_size() const;
 
     /*!
-     * \brief Returns the description of a content object.
-     */
-    const std::string& description() const;
-
-    /*!
-     * \brief Returns thumbnail link of a content object.
-     * It will be empty if there is no such a field in response.
-     */
-    const std::string& thumbnail_url() const;
-
-    /*!
-     * \brief Returns big thumbnail link of a content object,
-     * It will be empty if there is no such a field in response.
-     */
-    const std::string& big_thumbnail_url() const;
-
-    /*!
-     * \brief Returns a external playable link of a media content object,
-     * It will be empty if there is no such a field in response.
-     */
-    const std::string& present_url() const;
+     * \brief Returns the content's description.
+     */
+    const std::string &description() const;
+
+    /*!
+     * \brief Returns the content's thumbnail link.
+     * It will be empty if there is no such field in response.
+     */
+    const std::string &thumbnail_url() const;
+
+    /*!
+     * \brief Returns the content's high definition thumbnail link.
+     * It will be empty if there is no such a field in response.
+     */
+    const std::string &big_thumbnail_url() const;
+
+    /*!
+     * \brief Returns the link for opening the file in a viewer in a browser.
+     * It will be empty if there is no such field in response.
+     */
+    const std::string &present_url() const;
 
   private:
-    CloudContent(const tinyxml2::XMLElement* root);
+    CloudContent(const tinyxml2::XMLElement *root);
 
     friend class ClientPriv;
 

=== modified file 'include/mcloud/api/cloudfolder.h'
--- include/mcloud/api/cloudfolder.h	2016-10-26 08:50:32 +0000
+++ include/mcloud/api/cloudfolder.h	2016-12-07 12:44:11 +0000
@@ -23,7 +23,7 @@
 #include <mcloud/api/visibility.h>
 
 namespace tinyxml2 {
-class XMLElement;
+    class XMLElement;
 }
 
 namespace mcloud {
@@ -52,59 +52,59 @@
     ~CloudFolder();
 
     /*!
-     * \brief Returns a unique id of cloud folder object.
+     * \brief Returns the folder's unique id on mcloud.
      */
-    const std::string& id() const override;
+    const std::string &id() const override;
 
     /*!
-     * \brief Returns the name of cloud folder object.
+     * \brief Returns the folder's display name on mcloud.
      */
-    const std::string& name() const override;
+    const std::string &name() const override;
 
     /*!
      * \brief Returns the datetime when folder was created.
      */
-    const std::time_t& created_date() const override;
+    const std::time_t &created_date() const override;
 
     /*!
      * \brief Returns the datetime when folder was updated.
      */
-    const std::time_t& updated_date() const override;
-
-    /*!
-     * \brief Returns a unique id of the parent folder.
-     */
-    const std::string& parent_catalog_id() const override;
-
-    /*!
-     * \brief Returns etag of a folder object.
-     */
-    const std::string& etag() const override;
-
-    /*!
-     * \brief Returns owner id of a folder object.
-     */
-    const std::string& owner() const override;
-
-    /*!
-     * \brief Returns resource property of an object.
-     * \sa CloudResource::Property
+    const std::time_t &updated_date() const override;
+
+    /*!
+     * \brief Returns the folder's unique parent folder id.
+     */
+    const std::string &parent_catalog_id() const override;
+
+    /*!
+     * \brief Returns the folder's etag.
+     */
+    const std::string &etag() const override;
+
+    /*!
+     * \brief Returns the folder's owner id.
+     */
+    const std::string &owner() const override;
+
+    /*!
+     * \brief Returns the folder's resource property.
+     * \sa CloudResource::Property.
      */
     CloudResource::Property property() const override;
 
     /*!
-     * \brief Returns type of this folder object.
-     * \sa Type
+     * \brief Returns the folder's type.
+     * \sa CloudFolder::Type
      */
     Type folder_type() const;
 
     /*!
-     * \brief Returns a current folder's path.
+     * \brief Returns the folder's path on mcloud.
      */
-    const std::string& folder_path() const;
+    const std::string &folder_path() const;
 
   private:
-    CloudFolder(const tinyxml2::XMLElement* root);
+    CloudFolder(const tinyxml2::XMLElement *root);
 
     friend class ClientPriv;
 

=== modified file 'include/mcloud/api/cloudresource.h'
--- include/mcloud/api/cloudresource.h	2016-10-24 15:25:02 +0000
+++ include/mcloud/api/cloudresource.h	2016-12-07 12:44:11 +0000
@@ -42,19 +42,19 @@
 
     virtual ~CloudResource() = default;
 
-    virtual const std::string& id() const = 0;
-
-    virtual const std::string& name() const = 0;
-
-    virtual const std::time_t& created_date() const = 0;
-
-    virtual const std::time_t& updated_date() const = 0;
-
-    virtual const std::string& parent_catalog_id() const = 0;
-
-    virtual const std::string& etag() const = 0;
-
-    virtual const std::string& owner() const = 0;
+    virtual const std::string &id() const = 0;
+
+    virtual const std::string &name() const = 0;
+
+    virtual const std::time_t &created_date() const = 0;
+
+    virtual const std::time_t &updated_date() const = 0;
+
+    virtual const std::string &parent_catalog_id() const = 0;
+
+    virtual const std::string &etag() const = 0;
+
+    virtual const std::string &owner() const = 0;
 
     virtual Property property() const = 0;
 };

=== modified file 'include/mcloud/api/diskinfo.h'
--- include/mcloud/api/diskinfo.h	2016-10-26 08:50:32 +0000
+++ include/mcloud/api/diskinfo.h	2016-12-07 12:44:11 +0000
@@ -24,7 +24,7 @@
 #include <memory>
 
 namespace tinyxml2 {
-class XMLElement;
+    class XMLElement;
 }
 
 namespace mcloud {
@@ -51,7 +51,7 @@
     int disk_size() const;
 
   private:
-    DiskInfo(const tinyxml2::XMLElement* root);
+    DiskInfo(const tinyxml2::XMLElement *root);
 
     friend class ClientPriv;
 

=== modified file 'include/mcloud/api/downloadtask.h'
--- include/mcloud/api/downloadtask.h	2016-10-26 08:50:32 +0000
+++ include/mcloud/api/downloadtask.h	2016-12-07 12:44:11 +0000
@@ -23,20 +23,33 @@
 #include <mcloud/api/task.h>
 
 #include <memory>
+#include <vector>
 
 namespace mcloud {
 namespace api {
 
 class TaskHandler;
 
-/*!
-    \struct DownloadBufferCb
-    \brief DownloadBufferCb is a download request object which consists of a content id and writing callback function allows content data can be received in buffering via call back function.
- */
-struct MCLOUD_API_DLL_PUBLIC DownloadBufferCb {
-    std::string content_id;
+  
+  /*!
+   \struct DownloadRequest
+   \brief DownloadRequest is an object which can be used to request to download a content from mcloud. 
+    It consists of a \a item_id, and a writing callback function \a write_cb allows content data can be received in buffering via callback function.
+   \note if \a write_cb is nullptr, content will be downloaded into a local file. The file path of content can be found from DownloadTask::file_path.
+   */
+  
+struct MCLOUD_API_DLL_PUBLIC DownloadRequest {
+    DownloadRequest(const std::string &id,
+                    Task::Buffer_Callback write_callback = nullptr)
+        : item_id(id),
+          write_cb(write_callback) {
+              
+    }   
+    std::string item_id;
     Task::Buffer_Callback write_cb;
 };
+typedef std::vector<DownloadRequest> DownloadRequestList;
+
 
 class DownloadTaskPriv;
 class SyncManagerPriv;
@@ -50,40 +63,40 @@
   public:
     typedef std::shared_ptr<DownloadTask> Ptr;
 
-    DownloadTask(const DownloadTask&) = delete;
+    DownloadTask(const DownloadTask &) = delete;
 
-    DownloadTask& operator=(const DownloadTask&) = delete;
+    DownloadTask &operator=(const DownloadTask &) = delete;
 
     /*!
      * Returns an unique id of download task.
      */
-    const std::string& task_id() const override;
+    const std::string &task_id() const override;
 
     /*!
      * \brief Returns an unique id of cloud content on mcloud.
      */
-    const std::string& content_id() const override;
+    const std::string &content_id() const override;
 
     /*!
      * \brief Returns a display name of cloud content on mcloud.
      */
-    const std::string& content_name() const override;
+    const std::string &content_name() const override;
 
     /*!
      * \brief Returns cloud content local storage file path.
      */
-    const std::string& file_path() const override;
+    const std::string &file_path() const override;
 
     /*!
      * \brief Returns download url assigned by mcloud for this task.
      * \note this url will be expried after a period of time.
      */
-    const std::string& task_url() const override;
+    const std::string &task_url() const override;
 
     /*!
      * \brief Contains the error string if an error occurs during content download.
      */
-    const std::string& error_string() const override;
+    const std::string &error_string() const override;
 
     /*!
      * \brief Returns current sync-up status for this task.
@@ -95,13 +108,13 @@
      * \brief Handler for download progress of a task.
      * \sa Task::ProgressHandler
      */
-    Task::ProgressHandler& progress_changed() override;
+    Task::ProgressHandler &progress_changed() override;
 
     /*!
      * \brief Handler for download status of a task.
      * \sa Task::StatusHandler
      */
-    Task::StatusHandler& status_changed() override;
+    Task::StatusHandler &status_changed() override;
 
     /*!
      * \brief cancel the task.
@@ -110,7 +123,7 @@
     void cancel() override;
 
   private:
-    DownloadTask(const std::shared_ptr<DownloadTaskPriv>& p);
+    DownloadTask(const std::shared_ptr<DownloadTaskPriv> &p);
 
     friend class SyncManagerPriv;
 

=== modified file 'include/mcloud/api/exceptions.h'
--- include/mcloud/api/exceptions.h	2016-10-24 15:25:02 +0000
+++ include/mcloud/api/exceptions.h	2016-12-07 12:44:11 +0000
@@ -26,55 +26,55 @@
 namespace mcloud {
 namespace api {
 
-/**
- * \brief Indicates an invalid content id when querying content infomation by an id.
- * or an invalid folder id when listing or looup content in one specific folder.
- */
-
-class MCLOUD_API_DLL_PUBLIC InvalidIDException : public std::runtime_error {
-  public:
-    using runtime_error::runtime_error;
-};
-
-/*
- * \brief Indicates a content or folder can not be found on mcloud.
- */
-class MCLOUD_API_DLL_PUBLIC NonExistentException : public std::runtime_error {
-  public:
-    using runtime_error::runtime_error;
-};
-
-/**
- * \brief User ran out of space on mcloud storage.
- */
-class MCLOUD_API_DLL_PUBLIC OutofSpaceException : public std::runtime_error {
-  public:
-    using runtime_error::runtime_error;
-};
-
-/**
- * \brief Indicates a timeout on HTTP requests.
- */
-class  MCLOUD_API_DLL_PUBLIC HttpTimeoutException : public std::runtime_error {
-  public:
-    using runtime_error::runtime_error;
-};
-
-/*
- * \brief Indicates one or more http request parameters are invalid.
- */
-class MCLOUD_API_DLL_PUBLIC ParameterInvalidException : public std::runtime_error {
-  public:
-    using runtime_error::runtime_error;
-};
-
-/*
- * \brief Indicates access token is invalid or expired.
- */
-class MCLOUD_API_DLL_PUBLIC CredentialException : public std::runtime_error {
-  public:
-    using runtime_error::runtime_error;
-};
+    /**
+     * \brief Indicates an invalid content id when querying content infomation by an id.
+     * or an invalid folder id when listing or looup content in one specific folder.
+     */
+
+    class MCLOUD_API_DLL_PUBLIC InvalidIDException : public std::runtime_error {
+      public:
+        using runtime_error::runtime_error;
+    };
+
+    /*
+     * \brief Indicates a content or folder can not be found on mcloud.
+     */
+    class MCLOUD_API_DLL_PUBLIC NonExistentException : public std::runtime_error {
+      public:
+        using runtime_error::runtime_error;
+    };
+
+    /**
+     * \brief User ran out of space on mcloud storage.
+     */
+    class MCLOUD_API_DLL_PUBLIC OutofSpaceException : public std::runtime_error {
+      public:
+        using runtime_error::runtime_error;
+    };
+
+    /**
+     * \brief Indicates a timeout on HTTP requests.
+     */
+    class  MCLOUD_API_DLL_PUBLIC HttpTimeoutException : public std::runtime_error {
+      public:
+        using runtime_error::runtime_error;
+    };
+
+    /*
+     * \brief Indicates one or more http request parameters are invalid.
+     */
+    class MCLOUD_API_DLL_PUBLIC ParameterInvalidException : public std::runtime_error {
+      public:
+        using runtime_error::runtime_error;
+    };
+
+    /*
+     * \brief Indicates access token is invalid or expired.
+     */
+    class MCLOUD_API_DLL_PUBLIC CredentialException : public std::runtime_error {
+      public:
+        using runtime_error::runtime_error;
+    };
 
 }
 }

=== modified file 'include/mcloud/api/outlink.h'
--- include/mcloud/api/outlink.h	2016-10-26 08:50:32 +0000
+++ include/mcloud/api/outlink.h	2016-12-07 12:44:11 +0000
@@ -25,7 +25,7 @@
 #include <string>
 
 namespace tinyxml2 {
-class XMLElement;
+    class XMLElement;
 }
 
 namespace mcloud {
@@ -45,15 +45,15 @@
     /*!
      * \brief Returns a unique id of extranet object assigned by mcloud.
      */
-    const std::string& id() const;
+    const std::string &id() const;
 
     /*!
      * \brief Returns a unique id of extranet link assigned by mcloud.
      */
-    const std::string& link() const;
+    const std::string &link() const;
 
   private:
-    Outlink(const tinyxml2::XMLElement* root);
+    Outlink(const tinyxml2::XMLElement *root);
 
     friend class ClientPriv;
 

=== modified file 'include/mcloud/api/syncmanager.h'
--- include/mcloud/api/syncmanager.h	2016-10-26 08:50:32 +0000
+++ include/mcloud/api/syncmanager.h	2016-12-07 12:44:11 +0000
@@ -35,11 +35,11 @@
 
 /*!
     \class SyncManager
-    \brief SyncManager handles all the requests to upload and download.
+    \brief SyncManager handles all the requests to content upload and download.
     It's constructed around two threads for content synchronization. One for content uploading to cloud, another for cloud item downloading to local.
     Both thread are running asynchronously.
-    Calls \sa add_download_tasks() by passing a content id list for cloud content download,
-    Calls \sa add_upload_tasks() by passing a local file list path for local content upload.
+    Calls \sa add_download_task() by passing \sa DownloadRequest for cloud content download,
+    Calls \sa add_upload_task() by passing \sa UploadReuqest or \sa UploadBufferCb for local content upload.
  */
 
 class MCLOUD_API_DLL_PUBLIC SyncManager {
@@ -54,57 +54,50 @@
 
     ~SyncManager();
 
-    SyncManager(const SyncManager&) = delete;
+    SyncManager(const SyncManager &) = delete;
 
-    SyncManager& operator=(const SyncManager&) = delete;
+    SyncManager &operator=(const SyncManager &) = delete;
 
     /*!
      * \brief Starts to run download or upload tasks from sync-up thread.
-     * The tasks can be resumed by sync-up thread if sync manager is paused or canceled before.
-     * \sa pause(), cancel()
+     * The tasks will be resumed by sync-up thread if sync manager is in paused or cancelled state.
+     * \sa pause(), cancel().
      */
     void start();
 
     /*!
      * \brief Cancels all download or upload tasks from sync-up thread if sync manager is running.
-     * \note A canceled download or upload task has no chance to run again by sync-up thread.
-     * \sa start(), pause()
+     * \note The cancelled download or upload tasks can not be resumed by sync-up thread.
+     * \sa start(), pause().
      */
     void cancel();
 
     /*!
-     * \brief Pauses download or upload task from sync-up thread if sync manager is running.
+     * \brief Pauses all download or upload tasks from sync-up thread if sync manager is running.
      * Sync-up thread can continue to run previous paused task by calling \sa start().
      * \sa start(), cancel()
      */
     void pause();
 
     /*!
-     * \brief Add a new task with a given \a content id into download queue.
-     * \return a download task object that is pushed in sync-up manager.
-     * \throw std::runtime_error if error occurs.
-     * \sa add_download_tasks(), DownloadTask
-     */
-    DownloadTask::Ptr add_download_task(const std::string& content_id);
-
-    /*!
-     * \brief Pushes a download buffer callback item \a buffer_cb to sync manager and add regarding upload task into download queue.
-     * A download buffer object consists of the following fields
+     * \brief Pushes the download request item \a request_item to sync manager and add the upload task into download queue.
+     * A download request item consists of the following fields
      *      - `write_cb` (std::function<size_t(void *dest, size_t buf_size)>)
-     *         buffer reading callback function.
+     *         buffer writing callback function.
      *         The buffer area pointed at by the pointer \a dest should be filled up with at most \a buf_size number of bytes.
      *      - `content_id` (string)
      *         The id of content on mcloud.
      * \return a download task object that is pushed in sync-up manager.
-     * \throw std::runtime_error if error occurs.
-     * \sa add_download_tasks(), DownloadTask
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
+     * \note if the above write_cb is nullptr, content will be downloaded into a local file. The file path of content can be found from DownloadTask::file_path.
+     * \sa add_download_task(), DownloadTask
      */
-    DownloadTask::Ptr add_download_task(const DownloadBufferCb& buffer_cb);
+    DownloadTask::Ptr add_download_task(const DownloadRequest &request_item);
 
     /*!
      * \brief Pushes a upload request item \a request_item to sync manager and add regarding upload task into upload queue.
      * A upload request object consists of the following fields
-     *      - `file_path` (string)
+     *      - `local_file_path` (string)
      *         local file path.
      *      - `folder_id` (string)
      *         mcloud folder id which stores content in uploads folder.
@@ -113,14 +106,14 @@
      * If content_name is empty, local file name will be used as a content name displayed on mcloud.
      * If folder_id is empty, content will be uploaded into root folder.
      * \return a download task object that are pushed in sync-up manager.
-     * \throw std::runtime_error if error occurs.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
      * \note A file name can not contain any of following characters:
      *      '\', '/', ':', '*', '?', '"', '<', '>', '|'
      * \note Sync manager will detect if the uploading file is already existing on cloud,
      * if so, it simply sets the status of upload task completed to avoid duplicated upload.
-     * \sa add_download_tasks(), UploadRequest, UploadTask,
+     * \sa add_download_task(), UploadRequest, UploadTask,
      */
-    UploadTask::Ptr add_upload_task(const UploadRequest& request_item);
+    UploadTask::Ptr add_upload_task(const UploadRequest &request_item);
 
     /*!
      * \brief Pushes a new upload request object \a buffer_cb to sync manager and add regarding upload task into upload queue.
@@ -128,7 +121,7 @@
      *      - `read_cb` (std::function<size_t(void *dest, size_t buf_size)>)
      *         buffer reading callback function.
      *         The buffer area pointed at by the pointer \a dest should be filled up with at most \a buf_size number of bytes.
-     *      - `buffer_size` (size_t)
+     *      - `total_size` (size_t)
      *         total size of data buffers.
      *      - `folder_id` (string)
      *         mcloud folder id which stores content in uploads folder.
@@ -136,29 +129,29 @@
      *         uploaded content name, should not be empty.
      * If folder_id is empty, content will be uploaded into root folder.
      * \return a upload task object that are pushed in sync-up manager.
-     * \throw std::runtime_error if error occurs.
+     * \throw mcloud specific exceptions or std::runtime_error if error occurs.
      * \note A file name can not contain any of following characters:
      *      '\', '/', ':', '*', '?', '"', '<', '>', '|'
-     * \sa add_download_tasks(), UploadRequest, UploadTask,
+     * \sa add_download_task(), UploadRequest, UploadTask,
      */
-    UploadTask::Ptr add_upload_task(const UploadBufferCb& buffer_cb);
+    UploadTask::Ptr add_upload_task(const UploadBufferCb &buffer_cb);
 
     /*!
-     * \brief Returns a download task list hold by sync up manager.
-     * Each item in the list contains basic information of associated task.
-     * \sa upload_queue(), DownloadTask
+     * \brief Returns the download task list hold by sync up manager.
+     * Each item object in the list contains basic information of associated task.
+     * \sa upload_queue(), DownloadTask.
      */
     DownloadList download_queue();
 
     /*!
-     * \brief Returns a upload task list hold by sync up manager.
-     * Each item in the list contains basic information of associated task.
-     * \sa download_queue(), UploadTask
+     * \brief Returns the upload task list hold by sync up manager.
+     * Each item object in the list contains basic information of associated task.
+     * \sa download_queue(), UploadTask.
      */
     UploadList   upload_queue();
 
   private:
-    SyncManager(ClientPriv* client_priv);
+    SyncManager(ClientPriv *client_priv);
 
     friend class ClientPriv;
 

=== modified file 'include/mcloud/api/task.h'
--- include/mcloud/api/task.h	2016-10-24 15:25:02 +0000
+++ include/mcloud/api/task.h	2016-12-07 12:44:11 +0000
@@ -39,7 +39,7 @@
     enum class Status {
         Unstart,        ///< Task is in queue and sync manager does not run this task yet.
         Running,        ///< Task is being processed by sync manager.
-        Canceled,       ///< Task is in canceled status, it is caused by the call from Client::cancel_sync().
+        Cancelled,       ///< Task is in cancelled status, it is caused by the call from Client::cancel_sync().
         Paused,         ///< Task is in paused status, it is caused by the call from Client::pause_sync().
         Broken,         ///< Task is broken when sync manager failed to download/upload a task after several times trying.
         Complete,       ///< Task is completed.
@@ -49,40 +49,40 @@
 
     typedef std::function<void(Status)> StatusHandler;
 
-    typedef std::function<size_t(void* dest, size_t buf_size)> Buffer_Callback;
+    typedef std::function<size_t(void *dest, size_t buf_size)> Buffer_Callback;
 
     virtual ~Task() = default;
 
     /*!
      * \brief Returns an unique id of task.
      */
-    virtual const std::string& task_id() const = 0;
+    virtual const std::string &task_id() const = 0;
 
     /*!
      * \brief Returns an unique id of cloud content on mcloud.
      */
-    virtual const std::string& content_id() const = 0;
+    virtual const std::string &content_id() const = 0;
 
     /*!
      * \brief Returns a display name of cloud content on mcloud.
      */
-    virtual const std::string& content_name() const = 0;
+    virtual const std::string &content_name() const = 0;
 
     /*!
      * \brief Returns cloud content local storage file path.
      */
-    virtual const std::string& file_path() const = 0;
+    virtual const std::string &file_path() const = 0;
 
     /*!
      * \brief Contains the error string if an error occurs during task running.
      */
-    virtual const std::string& error_string() const = 0;
+    virtual const std::string &error_string() const = 0;
 
     /*!
      * \brief Returns a item url assigned by mcloud.
      * \note the url will be expried after a period of time.
      */
-    virtual const std::string& task_url() const = 0;
+    virtual const std::string &task_url() const = 0;
 
     /*!
      * \brief Returns current download or upload item sync-up status.
@@ -93,13 +93,13 @@
      * \brief Handler for download or upload progress of a task.
      * \sa Task::ProgressHandler
      */
-    virtual Task::ProgressHandler& progress_changed() = 0;
+    virtual Task::ProgressHandler &progress_changed() = 0;
 
     /*!
      * \brief Handler for download or upload progress of a task.
      * \sa Task::StatusHandler
      */
-    virtual Task::StatusHandler& status_changed() = 0;
+    virtual Task::StatusHandler &status_changed() = 0;
 
     /*!
      * \brief Cancels the task.

=== modified file 'include/mcloud/api/taskqueue.h'
--- include/mcloud/api/taskqueue.h	2016-10-24 15:25:02 +0000
+++ include/mcloud/api/taskqueue.h	2016-12-07 12:44:11 +0000
@@ -41,17 +41,17 @@
 
     virtual ~TaskQueue() = default;
 
-    TaskQueue(TaskQueue&& queue) {
+    TaskQueue(TaskQueue &&queue) {
         std::lock_guard<std::mutex> lock(mutex_);
         tasks_ = std::move(queue.tasks_);
     }
 
-    TaskQueue(const TaskQueue& queue) {
+    TaskQueue(const TaskQueue &queue) {
         std::lock_guard<std::mutex> lock(mutex_);
         tasks_ = queue.tasks_;
     }
 
-    TaskQueue& operator= (const TaskQueue& queue) {
+    TaskQueue &operator= (const TaskQueue &queue) {
         if (this != &queue) {
             std::lock_guard<std::mutex> lock1(mutex_);
             std::lock_guard<std::mutex> lock2(queue.mutex_);
@@ -91,19 +91,19 @@
         return tasks_.empty();
     }
 
-    void push(const T& task) {
+    void push(const T &task) {
         std::lock_guard<std::mutex> lock(mutex_);
         tasks_.push_back(task);
     }
 
-    void push(const TaskQueue& queue) {
+    void push(const TaskQueue &queue) {
         std::lock_guard<std::mutex> lock(mutex_);
-        for (const T& task : queue.tasks_) {
+        for (const T &task : queue.tasks_) {
             tasks_.push_back(task);
         }
     }
 
-    bool try_pop(T& task) {
+    bool try_pop(T &task) {
         std::lock_guard<std::mutex> lock(mutex_);
 
         if (tasks_.empty()) {
@@ -115,7 +115,7 @@
         return true;
     }
 
-    const T& operator[](int index) const {
+    const T &operator[](int index) const {
         std::lock_guard<std::mutex> lock(mutex_);
         return tasks_[index];
     }

=== modified file 'include/mcloud/api/uploadtask.h'
--- include/mcloud/api/uploadtask.h	2016-10-26 08:50:32 +0000
+++ include/mcloud/api/uploadtask.h	2016-12-07 12:44:11 +0000
@@ -32,10 +32,11 @@
 
 /*!
     \struct UploadRequest
-    \brief UploadRequest is a upload request item which consists of a upload folder id, up-front buffer size, upload content name
+    \brief UploadRequest is an object which can be used to request to upload local file on mcloud. 
+    It consists of a \a local_file_path, a \a folder_id, a \a content_name, which can be specified displayed file name on mcloud.
  */
 struct MCLOUD_API_DLL_PUBLIC UploadRequest {
-    std::string file_path;
+    std::string local_file_path;
     std::string folder_id;
     std::string content_name;
 };
@@ -43,11 +44,14 @@
 
 /*!
     \struct UploadBufferCb
-    \brief UploadBufferCb is a upload request item which consists of a upload folder id, upload buffer size, upload content name and reading callback function allows content data can be received in buffering via call back function.
+    \brief UploadBufferCb is an object which can be used to request to upload content mcloud in streaming on. 
+    It consists of a reading callback function \a read_cb which allows content data can be sent in buffering via callback function, a up-front content size \a total_size, a \a folder_id and a upload content name \a content_name, which can be specified displayed file name on mcloud. 
+    \sa Task::Buffer_Callback
 */
+
 struct MCLOUD_API_DLL_PUBLIC UploadBufferCb {
     Task::Buffer_Callback read_cb;
-    size_t      buffer_size;
+    size_t      total_size;
     std::string folder_id;
     std::string content_name;
 };
@@ -65,40 +69,40 @@
   public:
     typedef std::shared_ptr<UploadTask> Ptr;
 
-    UploadTask(const UploadTask&) = delete;
+    UploadTask(const UploadTask &) = delete;
 
-    UploadTask& operator=(const UploadTask&) = delete;
+    UploadTask &operator=(const UploadTask &) = delete;
 
     /*!
      * \brief Returns an unique id of upload task.
      */
-    const std::string& task_id() const override;
+    const std::string &task_id() const override;
 
     /*!
      * \brief Returns an unique id of cloud content on mcloud.
      */
-    const std::string& content_id() const override;
+    const std::string &content_id() const override;
 
     /*!
      * \brief Returns a display name of local content.
      */
-    const std::string& content_name() const override;
+    const std::string &content_name() const override;
 
     /*!
      * \brief Returns uploaded local content file path.
      */
-    const std::string& file_path() const override;
+    const std::string &file_path() const override;
 
     /*!
      * \brief Contains the error string if an error occurs during content uploading.
      */
-    const std::string& error_string() const override;
+    const std::string &error_string() const override;
 
     /*!
      * \brief Returns upload url assigned by mcloud for this task.
      * \note the url will be expired after a period of time.
      */
-    const std::string& task_url() const override;
+    const std::string &task_url() const override;
 
     /*!
      * \brief Returns current sync-up status for this task.
@@ -109,13 +113,13 @@
      * \brief Handler for upload progress of a task.
      * \sa Task::ProgressHandler
      */
-    Task::ProgressHandler& progress_changed() override;
+    Task::ProgressHandler &progress_changed() override;
 
     /*!
      * \brief Handler for upload status of a task.
      * \sa Task::StatusHandler
      */
-    Task::StatusHandler& status_changed() override;
+    Task::StatusHandler &status_changed() override;
 
     /*!
      * \brief cancel the task.
@@ -134,7 +138,7 @@
     bool is_need_upload() const;
 
   private:
-    UploadTask(const std::shared_ptr<UploadTaskPriv>& p);
+    UploadTask(const std::shared_ptr<UploadTaskPriv> &p);
 
     friend class SyncManagerPriv;
 

=== modified file 'provider/CMakeLists.txt'
--- provider/CMakeLists.txt	2016-10-24 15:25:02 +0000
+++ provider/CMakeLists.txt	2016-12-07 12:44:11 +0000
@@ -1,7 +1,22 @@
+install(
+    FILES storage-provider-mcloud.service
+    DESTINATION ${CMAKE_INSTALL_DATADIR}/accounts/services
+)
+
+install(
+    FILES storage-provider-mcloud.application
+    DESTINATION ${CMAKE_INSTALL_DATADIR}/accounts/applications
+)
+
+install(
+    FILES storage-provider-mcloud.desktop
+    DESTINATION ${CMAKE_INSTALL_DATADIR}/applications
+)
+
 find_package(PkgConfig REQUIRED)
 find_package(Boost COMPONENTS filesystem system thread REQUIRED)
 
-pkg_check_modules(STORAGE_FRAMEWORK_PROVIDER storage-framework-provider-1 REQUIRED)
+pkg_check_modules(STORAGE_FRAMEWORK_PROVIDER storage-framework-provider-1>=0.2 REQUIRED)
 
 include_directories(${CMAKE_CURRENT_BINARY_DIR} ${STORAGE_FRAMEWORK_PROVIDER_INCLUDE_DIRS})
 
@@ -13,7 +28,6 @@
 
 target_link_libraries(
     mcloud-provider 
-    mcloud-provider-static
     mcloud
     
     ${Boost_LIBRARIES}
@@ -22,10 +36,15 @@
 
 install(
     TARGETS mcloud-provider
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_LIBDIR}/${PROJECT_NAME}
+)
+
+configure_file(
+    com.canonical.StorageFramework.Provider.Mcloud.service.in
+    com.canonical.StorageFramework.Provider.Mcloud.service
 )
 
 install(
-    FILES ${CMAKE_CURRENT_SOURCE_DIR}/com.canonical.StorageFramework.Provider.McloudProvider.service
-    DESTINATION /usr/share/dbus-1/services
+    FILES ${CMAKE_CURRENT_BINARY_DIR}/com.canonical.StorageFramework.Provider.Mcloud.service
+    DESTINATION ${CMAKE_INSTALL_DATADIR}/dbus-1/services
 )

=== added file 'provider/com.canonical.StorageFramework.Provider.Mcloud.service.in'
--- provider/com.canonical.StorageFramework.Provider.Mcloud.service.in	1970-01-01 00:00:00 +0000
+++ provider/com.canonical.StorageFramework.Provider.Mcloud.service.in	2016-12-07 12:44:11 +0000
@@ -0,0 +1,3 @@
+[D-BUS Service]
+Name=com.canonical.StorageFramework.Provider.McloudProvider
+Exec=@CMAKE_INSTALL_FULL_LIBDIR@/@PROJECT_NAME@/mcloud-provider

=== removed file 'provider/com.canonical.StorageFramework.Provider.McloudProvider.service'
--- provider/com.canonical.StorageFramework.Provider.McloudProvider.service	2016-08-11 11:06:51 +0000
+++ provider/com.canonical.StorageFramework.Provider.McloudProvider.service	1970-01-01 00:00:00 +0000
@@ -1,3 +0,0 @@
-[D-BUS Service]
-Name=com.canonical.StorageFramework.Provider.McloudProvider
-Exec=/usr/bin/mcloud-provider

=== modified file 'provider/main.cpp'
--- provider/main.cpp	2016-10-24 15:25:02 +0000
+++ provider/main.cpp	2016-12-07 12:44:11 +0000
@@ -1,13 +1,18 @@
 #include "mcloudprovider.h"
 #include <unity/storage/provider/Server.h>
+#include <signal.h>
 
 using namespace std;
 using namespace unity::storage::provider;
 
 int main(int argc, char** argv)
 {
-    const string bus_name = "com.canonical.StorageFramework.Provider.McloudProvider";
-    string account_service_id = "com.canonical.scopes.mcloud_mcloud_mcloud";
+    const string bus_name = "com.canonical.StorageFramework.Provider.Mcloud";
+    string account_service_id = "storage-provider-mcloud";
+
+    //Ignore SIGPIPE when socket is not available in case of download task is cancelled.
+    signal(SIGPIPE, SIG_IGN);
+
     if (argc > 1) {
         account_service_id = argv[1];
     }

=== modified file 'provider/mcloudprovider.cpp'
--- provider/mcloudprovider.cpp	2016-10-24 15:25:02 +0000
+++ provider/mcloudprovider.cpp	2016-12-07 12:44:11 +0000
@@ -17,11 +17,11 @@
  */
 
 #include "mcloudprovider.h"
+#include <unity/storage/common.h>
 #include <unity/storage/provider/ProviderBase.h>
 #include <unity/storage/provider/TempfileUploadJob.h>
 #include <unity/storage/provider/UploadJob.h>
 #include <unity/storage/provider/DownloadJob.h>
-#include <unity/storage/provider/metadata_keys.h>
 #include <unity/storage/provider/Exceptions.h>
 
 #include <boost/thread.hpp>
@@ -48,6 +48,7 @@
 
 using namespace std;
 using namespace unity::storage;
+using namespace unity::storage::metadata;
 using namespace unity::storage::provider;
 using namespace mcloud::api;
 using namespace boost::uuids;
@@ -60,8 +61,8 @@
     static constexpr const int   CLIENT_COUNT = 3;
 
     static const char* FOLDER_TYPE[]  = {"normal", "pictures", "music", "videos", "message", "docs", "app", "sync"};
-    static const char* CONTENT_TYPE[] = {"all", "image", "audio", "video", "other", "doc", "spreadsheet", "ppt"};
-    static const char* STATUS[]       = {"unstart", "running", "canceled", "paused", "broken", "complete"};
+    static const char* FILE_TYPE[] = {"all", "image", "audio", "video", "other", "doc", "spreadsheet", "ppt"};
+    static const char* STATUS[]    = {"unstart", "running", "canceled", "paused", "broken", "complete"};
 
     string make_job_id() {
         auto uuid = random_generator()();
@@ -76,8 +77,8 @@
         return FOLDER_TYPE[int(type)];
     }
 
-    string content_type_to_string(CloudContent::Type type) {
-        return CONTENT_TYPE[int(type)];
+    string file_type_to_string(CloudContent::Type type) {
+        return FILE_TYPE[int(type)];
     }
 
     string time_to_iso(time_t t) {
@@ -112,31 +113,76 @@
         return count;
     }
 
-    Item content_to_item(CloudResource::Ptr resource) {
+    Item content_to_item(CloudResource::Ptr resource, vector<string> const& keys) {
         Item item;
         item.item_id = resource->id();
         item.parent_ids = {resource->parent_catalog_id()};
         item.name = resource->name();
         item.etag = resource->etag();
-        item.metadata["owner"] = resource->owner();
-        item.metadata[provider::CREATION_TIME] = time_to_iso(resource->created_date());
-        item.metadata[provider::LAST_MODIFIED_TIME] = time_to_iso(resource->updated_date());
+        item.metadata[LAST_MODIFIED_TIME] = time_to_iso(resource->updated_date());
         if (resource->property() == CloudResource::Property::Folder) {
             item.type = ItemType::folder;
-            auto folder = std::static_pointer_cast<mcloud::api::CloudFolder>(resource);
-            item.metadata["folder_type"] = folder_type_to_string(folder->folder_type());
-            item.metadata["folder_path"] = folder->folder_path();
         } else if (resource->property() == CloudResource::Property::Content) {
             item.type = ItemType::file;
             auto file = std::static_pointer_cast<mcloud::api::CloudContent>(resource);
-            item.metadata["suffix"] = file->suffix();
-            item.metadata["content_type"] = content_type_to_string(file->type());
-
-            item.metadata[provider::SIZE_IN_BYTES] = file->content_size();
-            item.metadata["description"] = file->description();
-            item.metadata["thumbnail_url"] = file->thumbnail_url();
-            item.metadata["big_thumbnail_url"] = file->big_thumbnail_url();
-            item.metadata["present_url"] = file->big_thumbnail_url();
+            item.metadata[SIZE_IN_BYTES] = file->content_size();
+        }
+
+        if (!keys.empty()) { 
+            if (keys[0] == metadata::ALL) {
+                item.metadata[CREATION_TIME] = time_to_iso(resource->created_date());
+                item.metadata["mcloud:owner"] = resource->owner();
+                if (resource->property() == CloudResource::Property::Folder) {
+                    auto folder = std::static_pointer_cast<mcloud::api::CloudFolder>(resource);
+                    item.metadata["mcloud:folder_type"] = folder_type_to_string(folder->folder_type());
+                    item.metadata["mcloud:folder_path"] = folder->folder_path();
+                } else if (resource->property() == CloudResource::Property::Content) {
+                    auto file = std::static_pointer_cast<mcloud::api::CloudContent>(resource);
+                    item.metadata[DESCRIPTION] = file->description();
+                    item.metadata[CONTENT_TYPE] = file_type_to_string(file->type());
+                    item.metadata["mcloud:suffix"] = file->suffix();
+                    item.metadata["mcloud:thumbnail_url"] = file->thumbnail_url();
+                    item.metadata["mcloud:big_thumbnail_url"] = file->big_thumbnail_url();
+                    item.metadata["mcloud:present_url"] = file->present_url();
+                }
+            } else {
+                auto metadata = [&]() {
+                    std::map<std::string, MetadataValue> metadata;
+                    for (const auto& key: keys) {
+                        if (key == CREATION_TIME) {
+                            metadata[CREATION_TIME] = time_to_iso(resource->created_date());
+                        } else if (key == DESCRIPTION && resource->property() == CloudResource::Property::Content) {
+                            auto file = std::static_pointer_cast<mcloud::api::CloudContent>(resource);
+                            metadata[DESCRIPTION] = file->description();
+                        } else if (key == CONTENT_TYPE && resource->property() == CloudResource::Property::Content) {
+                            auto file = std::static_pointer_cast<mcloud::api::CloudContent>(resource);
+                            metadata[CONTENT_TYPE] = file_type_to_string(file->type());
+                        } else if (key == "mcloud:folder_type" && resource->property() == CloudResource::Property::Folder) {
+                            auto folder = std::static_pointer_cast<mcloud::api::CloudFolder>(resource);
+                            metadata["mcloud:folder_type"] = folder_type_to_string(folder->folder_type());
+                        } else if (key == "mcloud:folder_path" && resource->property() == CloudResource::Property::Folder) {
+                            auto folder = std::static_pointer_cast<mcloud::api::CloudFolder>(resource);
+                            metadata["mcloud:folder_path"] = folder->folder_path();
+                        } else if (key == "mcloud:suffix" && resource->property() == CloudResource::Property::Content) {
+                            auto file = std::static_pointer_cast<mcloud::api::CloudContent>(resource);
+                            metadata["mcloud:suffix"] = file->suffix();
+                        } else if (key == "mcloud:thumbnail_url" && resource->property() == CloudResource::Property::Content) {
+                            auto file = std::static_pointer_cast<mcloud::api::CloudContent>(resource);
+                            metadata["mcloud:thumbnail_url"] = file->thumbnail_url();
+                        } else if (key == "mcloud:big_thumbnail_url" && resource->property() == CloudResource::Property::Content) {
+                            auto file = std::static_pointer_cast<mcloud::api::CloudContent>(resource);
+                            metadata["mcloud:big_thumbnail_url"] = file->big_thumbnail_url();
+                        } else if (key == "mcloud:present_url" && resource->property() == CloudResource::Property::Content) {
+                            auto file = std::static_pointer_cast<mcloud::api::CloudContent>(resource);
+                            metadata["mcloud:present_url"] = file->present_url();
+                        }
+                    }
+
+                    return metadata; 
+                }();
+
+                item.metadata.insert(metadata.begin(), metadata.end());
+            }
         }
 
         return item;
@@ -150,6 +196,7 @@
                     string const& file_name,
                     int64_t       size,
                     bool allow_overwrite,
+                    vector<string> const& keys,
                     Client::Ptr   client);
 
     boost::future<void> cancel() override;
@@ -167,6 +214,7 @@
     std::mutex      mutex_;
     UploadTask::Ptr task_;
     Client::Ptr     client_;
+    vector<string>  keys_;
     boost::future<tuple<bool, string>> upload_future_;
 };
 
@@ -195,19 +243,21 @@
     : client_list_(CLIENT_COUNT, std::make_shared<Client>(TIME_OUT)) {
 }
 
-boost::future<ItemList> McloudProvider::roots(Context const& ctx) {
-    return boost::async([this, ctx]() {
+boost::future<ItemList> McloudProvider::roots(vector<string> const& /*keys*/, 
+                                              Context const& ctx) {
+    return boost::async([=]() {
         try {
             auto client = assign_client(ctx);
-            auto root_folder_id = client->cloud_root_folder_id();
+            auto root_folder_id = client->root_folder_id();
 
+            //mcloud does't provider etag for root, create fake one "etag".
             ItemList roots = {
-                {root_folder_id, {}, "root", "", ItemType::root, {}}
+                {root_folder_id, {}, "root", "etag", ItemType::root, {}}
             };
 
-            return make_ready_future<ItemList>(roots);
+            return roots;
         } catch (runtime_error& e) {
-            return make_exceptional_future<ItemList>(
+            throw boost::enable_current_exception(
                        RemoteCommsException(string("McloudProvider::roots() failed: ") + e.what()));
         }
     });
@@ -215,6 +265,7 @@
 
 boost::future<tuple<ItemList, string>> McloudProvider::list(string const& item_id,
                                                             string const& page_token,
+                                                            vector<string> const& keys,
                                                             Context const& ctx) {
     int page_token_index = 0;
     if (!page_token.empty()) {
@@ -226,7 +277,7 @@
         }
     }
 
-    return boost::async([this, item_id, page_token_index, ctx]() {
+    return boost::async([=]() {
         try {
             const int count_per_page = 50;
             int start_index = 1 + page_token_index * count_per_page;
@@ -236,22 +287,20 @@
 
             ItemList items;
             for (const auto& content : content_list) {
-                items.push_back(content_to_item(content));
+                items.push_back(content_to_item(content, keys));
             }
 
-            int offset = 0;
-            boost::promise<tuple<ItemList, string>> prom;
+            string next_page_token;
             if (content_list.size() >= count_per_page) {
-                offset++;
+                next_page_token = std::to_string(page_token_index + 1);
             }
-            prom.set_value(make_tuple(items, std::to_string(page_token_index + offset)));
 
-            return prom.get_future();
+            return make_tuple(items, next_page_token);
         } catch (InvalidIDException& e) {
-            return make_exceptional_future<tuple<ItemList, string>>(
+            throw boost::enable_current_exception(
                        NotExistsException(string("McloudProvider::list() failed: ") + e.what(), item_id));
         } catch (runtime_error& e) {
-            return make_exceptional_future<tuple<ItemList, string>>(
+            throw boost::enable_current_exception(
                        RemoteCommsException(string("McloudProvider::list() failed: ") + e.what()));
         }
     });
@@ -259,8 +308,9 @@
 
 boost::future<ItemList> McloudProvider::lookup(string const& parent_id,
                                                string const& name,
+                                               vector<string> const& keys,
                                                Context const& ctx) {
-    return boost::async([this, parent_id, name, ctx]() {
+    return boost::async([=]() {
         try {
             const int count_per_page = 50;
             int page_token_index = 0;
@@ -276,7 +326,7 @@
 
                 for (const auto& content : content_list) {
                     if (content->name().find(name) != string::npos) {
-                        items.push_back(content_to_item(content));
+                        items.push_back(content_to_item(content, keys));
                     }
                 }
 
@@ -285,29 +335,30 @@
                 }
             } while (true);
 
-            return make_ready_future<ItemList>(items);
+            return items;
         } catch (InvalidIDException& e) {
-            return make_exceptional_future<ItemList>(
+            throw boost::enable_current_exception(
                        NotExistsException(string("McloudProvider::lookup() folder not exists: ") + e.what(), parent_id));
         } catch (runtime_error& e) {
-            return make_exceptional_future<ItemList>(
+            throw boost::enable_current_exception(
                        RemoteCommsException(string("McloudProvider::lookup() failed: ") + e.what()));
         }
     });
 }
 
 boost::future<Item> McloudProvider::metadata(string const& item_id,
+                                             vector<string> const& keys,
                                              Context const& ctx) {
-    return boost::async([this, item_id, ctx]() {
+    return boost::async([=]() {
         try {
             auto client = assign_client(ctx);
             auto content = client->content_info(item_id);
-            return make_ready_future<Item>(content_to_item(content));
+            return content_to_item(content, keys);
         } catch (NonExistentException& e) {
-            return make_exceptional_future<Item>(
+            throw boost::enable_current_exception(
                        NotExistsException(string("McloudProvider::metadata() content not exists: ") + e.what(), item_id));
         } catch (runtime_error& e) {
-            return make_exceptional_future<Item>(
+            throw boost::enable_current_exception(
                        RemoteCommsException(string("McloudProvider::metadata() failed: ") + e.what()));
         }
     });
@@ -315,17 +366,18 @@
 
 boost::future<Item> McloudProvider::create_folder(string const& parent_id,
                                                   string const& name,
+                                                  vector<string> const& keys,
                                                   Context const& ctx) {
-    return boost::async([this, parent_id, name, ctx]() {
+    return boost::async([=]() {
         try {
             auto client = assign_client(ctx);
             auto content = client->create_folder(name, parent_id);
-            return make_ready_future<Item>(content_to_item(content));
+            return content_to_item(content, keys);
         } catch (NonExistentException& e) {
-            return make_exceptional_future<Item>(
+            throw boost::enable_current_exception(
                        NotExistsException(string("McloudProvider::create_folder() failed: ") + e.what(), name));
         } catch (runtime_error& e) {
-            return make_exceptional_future<Item>(
+            throw boost::enable_current_exception(
                        RemoteCommsException(string("McloudProvider::create_folder() failed: ") + e.what()));
         }
     });
@@ -336,15 +388,17 @@
                                                                  int64_t size,
                                                                  string const& /*content_type*/,
                                                                  bool allow_overwrite,
+                                                                 vector<string> const& keys,
                                                                  Context const& ctx) {
     auto client = assign_client(ctx, JobMode::Upload);
     return make_ready_future(unique_ptr<UploadJob>(new McloudUploadJob(make_job_id(), parent_id, name,
-                             size, allow_overwrite, client)));
+                             size, allow_overwrite, keys, client)));
 }
 
 boost::future<unique_ptr<UploadJob>> McloudProvider::update(string const& item_id,
                                                             int64_t size,
                                                             string const& /*old_etag*/,
+                                                            vector<string> const& keys,
                                                             Context const& ctx) {
     //mcloud doesn't have update API so do some workarounds.
     //1.fetch metadata to get the content name and parent folder id;
@@ -352,7 +406,7 @@
     //3.create a new file in the original folder with the same file name.
     //side effect: the original item id is changed after updated.
 
-    return boost::async([this, item_id, size, ctx]() {
+    return boost::async([=]() {
         try {
             auto client = assign_client(ctx);
             auto content = client->content_info(item_id);
@@ -361,15 +415,16 @@
 
             delete_item(item_id, ctx);
 
-            return create_file(parent_id, file_name, size, "", true, ctx);
+            return create_file(parent_id, file_name, size, "", true, keys, ctx).get();
         } catch (runtime_error& e) {
-            return make_exceptional_future<unique_ptr<UploadJob>>(
+            throw boost::enable_current_exception(
                        RemoteCommsException(string("McloudProvider::update() failed: ") + e.what()));
         }
     });
 }
 
 boost::future<unique_ptr<DownloadJob>> McloudProvider::download(string const& item_id,
+                                                                string const& /*match_etag*/,
                                                                 Context const& ctx) {
     auto client = assign_client(ctx, JobMode::Download);
     return make_ready_future(unique_ptr<DownloadJob>(new McloudDownloadJob(make_job_id(), item_id,
@@ -378,17 +433,16 @@
 
 boost::future<void> McloudProvider::delete_item(string const& item_id,
                                                 Context const& ctx) {
-    return boost::async([this, item_id, ctx]() {
+    return boost::async([=]() {
         try {
             auto client = assign_client(ctx);
             Client::Stringlist content_id_list{{item_id}};
             client->delete_contents(content_id_list);
-            return make_ready_future();
         } catch (ParameterInvalidException& e) {
-            return make_exceptional_future<void>(
+            throw boost::enable_current_exception(
                        NotExistsException(string("McloudProvider::delete_item() failed: ") + e.what(), item_id));
         } catch (runtime_error& e) {
-            return make_exceptional_future<void>(
+            throw boost::enable_current_exception(
                        RemoteCommsException(string("McloudProvider::delete_item() failed: ") + e.what()));
         }
     });
@@ -397,21 +451,22 @@
 boost::future<Item> McloudProvider::move(string const& item_id,
                                          string const& new_parent_id,
                                          string const& /*new_name*/,
+                                         vector<string> const& keys,
                                          Context const& ctx) {
     //Mcloud doens't support changing content name when moving content
-    return boost::async([this, item_id, new_parent_id, ctx]() {
+    return boost::async([=]() {
         try {
             auto client = assign_client(ctx);
             Client::Stringlist folderlist;
             Client::Stringlist contentlist{{item_id}};
             client->move_items(folderlist, contentlist, new_parent_id);
             auto content = client->content_info(item_id);
-            return make_ready_future<Item>(content_to_item(content));
+            return content_to_item(content, keys);
         } catch (NonExistentException& e) {
-            return make_exceptional_future<Item>(
-                       NotExistsException(string("McloudProvider::move() content or folder not exist: ") + e.what(), ""));
+            throw boost::enable_current_exception(
+                       NotExistsException(string("McloudProvider::move() content or folder not exist: ") + e.what(), item_id));
         } catch (runtime_error& e) {
-            return make_exceptional_future<Item>(
+            throw boost::enable_current_exception(
                        RemoteCommsException(string("McloudProvider::move() failed: ") + e.what()));
         }
     });
@@ -420,21 +475,22 @@
 boost::future<Item> McloudProvider::copy(string const& item_id,
                                          string const& new_parent_id,
                                          string const& /*new_name*/,
+                                         vector<string> const& keys,
                                          Context const& ctx) {
     //Mcloud doens't support changing content name when copying content
-    return boost::async([this, item_id, new_parent_id, ctx]() {
+    return boost::async([=]() {
         try {
             Client::Stringlist content_list{{item_id}};
             auto client = assign_client(ctx);
             auto content_id = client->copy_contents(content_list, new_parent_id)[0];
             auto content = client->content_info(content_id);
-            return make_ready_future<Item>(content_to_item(content));
+            return content_to_item(content, keys);
         } catch (NonExistentException& e) {
-            return make_exceptional_future<Item>(
+            throw boost::enable_current_exception(
                        NotExistsException(string("McloudProvider::copy() content or folder not exist: ") + e.what(),
                                           item_id));
         } catch (runtime_error& e) {
-            return make_exceptional_future<Item>(
+            throw boost::enable_current_exception(
                        RemoteCommsException(string("McloudProvider::copy() failed: ") + e.what()));
         }
     });
@@ -474,6 +530,7 @@
                                  string const& file_name,
                                  int64_t     size,
                                  bool allow_overwrite,
+                                 vector<string> const& keys,
                                  Client::Ptr  client)
     : UploadJob(upload_id)
     , parent_id_(parent_id)
@@ -482,6 +539,7 @@
     , allow_overwrite_(allow_overwrite)
     , task_(nullptr)
     , client_(client)
+    , keys_(keys)
     , upload_future_(upload_data()) {
 }
 
@@ -504,13 +562,13 @@
             auto error_str = get<err_index>(upload_ctx);
             if (upload_ok) {
                 auto content = client_->content_info(task_->content_id());
-                return make_ready_future<Item>(content_to_item(content));
+                return content_to_item(content, keys_);
             }
 
-            return make_exceptional_future<Item>(
+            throw boost::enable_current_exception(
                        RemoteCommsException(string("McloudUploadJob::finish() failed: ") + error_str));
         } catch (runtime_error& e) {
-            return make_exceptional_future<Item>(
+            throw boost::enable_current_exception(
                        RemoteCommsException(string("McloudUploadJob::finish() failed: ") + e.what()));
         }
     });
@@ -520,7 +578,7 @@
     auto prom = boost::make_shared<boost::promise<tuple<bool, string>>>();
 
     return boost::async([this, prom]() {
-        std::lock_guard<std::mutex> guard(mutex_);
+        std::unique_lock<std::mutex> lock(mutex_);
 
         int socket_fd = read_socket();
         UploadBufferCb buffer_cb{[socket_fd](void* dest, size_t buf_size) -> size_t {
@@ -540,7 +598,7 @@
                 std::cout << " status: " << status_to_string(status) << std::endl;
                 if (status == Task::Status::Complete) {
                     prom->set_value(make_tuple(true, string()));
-                } else if (status == Task::Status::Canceled ||
+                } else if (status == Task::Status::Cancelled ||
                            status == Task::Status::Broken) {
                     prom->set_value(make_tuple(false, task_->error_string()));
                 }
@@ -552,7 +610,8 @@
             prom->set_value(make_tuple(false, e.what()));
         }
 
-        return prom->get_future();
+        lock.unlock();
+        return prom->get_future().get();
     });
 }
 
@@ -592,10 +651,10 @@
         auto download_ok = get<succ_index>(download_ctx);
         auto error_str   = get<err_index>(download_ctx);
         if (download_ok) {
-            return make_ready_future();
+            return; 
         }
 
-        return make_exceptional_future<void>(
+        throw boost::enable_current_exception(
                    RemoteCommsException(string("failed to download from mcloud: ") + error_str));
     });
 }
@@ -604,24 +663,24 @@
     auto prom = boost::make_shared<boost::promise<tuple<bool, string>>>();
 
     return boost::async([this, prom]() {
-        std::lock_guard<std::mutex> guard(mutex_);
+        std::unique_lock<std::mutex> lock(mutex_);
 
         int socket_fd = write_socket();
-        DownloadBufferCb buffer_cb{item_id_,
-        [socket_fd](void* dest, size_t buf_size) -> size_t {
-            //data writing callback.
-            return write(socket_fd, dest, buf_size);
-        }
-                                  };
+        DownloadRequest request_item{item_id_,
+            [socket_fd](void* dest, size_t buf_size) -> size_t {
+                //data writing callback.
+                return write(socket_fd, dest, buf_size);
+            }
+        };
 
         try {
-            task_ = client_->syncmanager()->add_download_task(buffer_cb);
+            task_ = client_->syncmanager()->add_download_task(request_item);
             task_->status_changed() = [this, prom](Task::Status status) {
                 std::cout << " status: " << status_to_string(status) << std::endl;
                 if (status == Task::Status::Complete) {
                     report_complete();
                     prom->set_value(make_tuple(true, string()));
-                } else if (status == Task::Status::Canceled ||
+                } else if (status == Task::Status::Cancelled ||
                            status == Task::Status::Broken) {
                     prom->set_value(make_tuple(false, task_->error_string()));
                 }
@@ -633,7 +692,8 @@
             prom->set_value(make_tuple(false, e.what()));
         }
 
-        return prom->get_future();
+        lock.unlock();
+        return prom->get_future().get();
     });
 }
 

=== modified file 'provider/mcloudprovider.h'
--- provider/mcloudprovider.h	2016-10-24 15:25:02 +0000
+++ provider/mcloudprovider.h	2016-12-07 12:44:11 +0000
@@ -24,15 +24,7 @@
 using namespace std;
 using namespace mcloud::api;
 
-using unity::storage::provider::Context;
-using unity::storage::provider::DownloadJob;
-using unity::storage::provider::ProviderBase;
-using unity::storage::provider::Item;
-using unity::storage::provider::ItemList;
-using unity::storage::provider::UploadJob;
-
-
-class McloudProvider : public ProviderBase {
+class McloudProvider : public unity::storage::provider::ProviderBase {
   public:
 
     enum class JobMode {
@@ -43,40 +35,47 @@
 
     McloudProvider();
 
-    boost::future<ItemList> roots(Context const& ctx) override;
-    boost::future<tuple<ItemList, string>> list(
-        string const& item_id, string const& page_token,
-        Context const& ctx) override;
-    boost::future<ItemList> lookup(
-        string const& parent_id, string const& name,
-        Context const& ctx) override;
-    boost::future<Item> metadata(
-        string const& item_id, Context const& ctx) override;
-    boost::future<Item> create_folder(
-        string const& parent_id, string const& name,
-        Context const& ctx) override;
+    boost::future<unity::storage::provider::ItemList> roots(
+        vector<string> const& keys, unity::storage::provider::Context const& ctx) override;
+    boost::future<tuple<unity::storage::provider::ItemList, string>> list(
+        string const& item_id, string const& page_token, vector<string> const& keys,
+        unity::storage::provider::Context const& ctx) override;
+    boost::future<unity::storage::provider::ItemList> lookup(
+        string const& parent_id, string const& name, vector<string> const& keys,
+        unity::storage::provider::Context const& ctx) override;
+    boost::future<unity::storage::provider::Item> metadata(
+        string const& item_id, vector<string> const& keys, 
+        unity::storage::provider::Context const& ctx) override;
+    boost::future<unity::storage::provider::Item> create_folder(
+        string const& parent_id, string const& name, vector<string> const& keys,
+        unity::storage::provider::Context const& ctx) override;
 
-    boost::future<unique_ptr<UploadJob>> create_file(
+    boost::future<unique_ptr<unity::storage::provider::UploadJob>> create_file(
         string const& parent_id, string const& name,
         int64_t size, string const& content_type, 
-        bool allow_overwrite, Context const& ctx) override;
-    boost::future<unique_ptr<UploadJob>> update(
+        bool allow_overwrite, vector<string> const& keys, 
+        unity::storage::provider::Context const& ctx) override;
+    boost::future<unique_ptr<unity::storage::provider::UploadJob>> update(
         string const& item_id, int64_t size,
-        string const& old_etag,Context const& ctx) override;
+        string const& old_etag, vector<string> const& keys, 
+        unity::storage::provider::Context const& ctx) override;
 
-    boost::future<unique_ptr<DownloadJob>> download(
-        string const& item_id, Context const& ctx) override;
+    boost::future<unique_ptr<unity::storage::provider::DownloadJob>> download(
+        string const& item_id, string const& match_etag, 
+        unity::storage::provider::Context const& ctx) override;
     boost::future<void> delete_item(
-        string const& item_id, Context const& ctx) override;
-    boost::future<Item> move(
-        string const& item_id, string const& new_parent_id,
-        string const& new_name, Context const& ctx) override;
-    boost::future<Item> copy(
-        string const& item_id, string const& new_parent_id,
-        string const& new_name, Context const& ctx) override;
+        string const& item_id, unity::storage::provider::Context const& ctx) override;
+    boost::future<unity::storage::provider::Item> move(
+        string const& item_id, string const& new_parent_id,
+        string const& new_name, vector<string> const& keys,
+        unity::storage::provider::Context const& ctx) override;
+    boost::future<unity::storage::provider::Item> copy(
+        string const& item_id, string const& new_parent_id,
+        string const& new_name, vector<string> const& keys, 
+        unity::storage::provider::Context const& ctx) override;
 
   private:
-    Client::Ptr assign_client(Context const& ctx, JobMode job = JobMode::Unknown);
+    Client::Ptr assign_client(unity::storage::provider::Context const& ctx, JobMode job = JobMode::Unknown);
   private:
     vector<Client::Ptr>    client_list_;
 };

=== added file 'provider/storage-provider-mcloud.application'
--- provider/storage-provider-mcloud.application	1970-01-01 00:00:00 +0000
+++ provider/storage-provider-mcloud.application	2016-12-07 12:44:11 +0000
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<application id="storage-provider-mcloud">
+  <description>CMCC mcloud storage provider</description>
+  <desktop-entry>storage-provider-mcloud.desktop</desktop-entry>
+
+  <services>
+    <service id="storage-provider-mcloud">
+      <description>Access cmcc mcloud service</description>
+    </service>
+  </services>
+</application>

=== added file 'provider/storage-provider-mcloud.desktop'
--- provider/storage-provider-mcloud.desktop	1970-01-01 00:00:00 +0000
+++ provider/storage-provider-mcloud.desktop	2016-12-07 12:44:11 +0000
@@ -0,0 +1,5 @@
+[Desktop Entry]
+Type=Application
+NoDisplay=true
+Name=Mcloud storage provider
+Icon=mcloud

=== added file 'provider/storage-provider-mcloud.service'
--- provider/storage-provider-mcloud.service	1970-01-01 00:00:00 +0000
+++ provider/storage-provider-mcloud.service	2016-12-07 12:44:11 +0000
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<service id="storage-provider-mcloud">
+  <type>storage-provider</type>
+  <name>Mcloud</name>
+  <icon>mcloud</icon>
+  <provider>mcloud</provider>
+</service>

=== modified file 'src/mcloud/api/client.cpp'
--- src/mcloud/api/client.cpp	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/client.cpp	2016-12-07 12:44:11 +0000
@@ -31,16 +31,16 @@
     p_->sync_manager()->cancel();
 }
 
-void Client::set_access_token(const string& access_token) {
+void Client::set_access_token(const string &access_token) {
     p_->set_access_token(access_token);
 }
 
-bool Client::refresh_token(const string& refresh_token) {
+bool Client::refresh_token(const string &refresh_token) {
     return p_->refersh_token(refresh_token);
 }
 
-string Client::cloud_root_folder_id() {
-    return p_->cloud_sync_folder_id();
+string Client::root_folder_id() {
+    return p_->root_folder_id();
 }
 
 DiskInfo::Ptr Client::disk_info() {
@@ -48,62 +48,62 @@
 }
 
 Client::ResourceList Client::cloud_content_list(int start_index,
-                                                int count,
-                                                CloudContent::Type type,
-                                                const string& folder_id) {
+        int count,
+        CloudContent::Type type,
+        const string &folder_id) {
     return p_->cloud_content_list(start_index, count, type, folder_id);
 }
 
-CloudContent::Ptr Client::content_info(const string& content_id) {
+CloudContent::Ptr Client::content_info(const string &content_id) {
     return p_->content_info(content_id);
 }
 
-CloudFolder::Ptr Client::create_folder(const string& folder_name,
-                                       const string& folder_id) {
+CloudFolder::Ptr Client::create_folder(const string &folder_name,
+                                       const string &folder_id) {
     return p_->create_folder(folder_name, folder_id);
 }
 
-Client::ResourceList Client::look_up(const string& name,
-                                     const string& folder_id,
+Client::ResourceList Client::look_up(const string &name,
+                                     const string &folder_id,
                                      CloudResource::Property property) {
     return p_->look_up(name, folder_id, property);
 }
 
-Client::OutlinkList Client::create_folder_sharing_url(const Stringlist& folder_ids) {
+Client::OutlinkList Client::create_folder_sharing_url(const Stringlist &folder_ids) {
     return p_->create_folder_sharing_url(folder_ids);
 }
 
-Client::OutlinkList Client::create_content_sharing_url(const Stringlist& content_ids) {
+Client::OutlinkList Client::create_content_sharing_url(const Stringlist &content_ids) {
     return p_->create_content_sharing_url(content_ids);
 }
 
-Client::Stringlist Client::copy_folders(const Stringlist& folder_ids,
-                                        const string& folder_id) {
+Client::Stringlist Client::copy_folders(const Stringlist &folder_ids,
+                                        const string &folder_id) {
     return p_->copy_folders(folder_ids, folder_id);
 }
 
-Client::Stringlist Client::copy_contents(const Stringlist& contents_ids,
-                                         const string& folder_id) {
+Client::Stringlist Client::copy_contents(const Stringlist &contents_ids,
+        const string &folder_id) {
     return p_->copy_contents(contents_ids, folder_id);
 }
 
-bool Client::move_items(const Stringlist& folder_ids,
-                        const Stringlist& content_ids,
-                        const string& folder_id) {
+bool Client::move_items(const Stringlist &folder_ids,
+                        const Stringlist &content_ids,
+                        const string &folder_id) {
     return p_->move_items(folder_ids, content_ids, folder_id);
 }
 
-bool Client::update_folder(const string& folder_id,
-                           const string& new_folder_name) {
+bool Client::update_folder(const string &folder_id,
+                           const string &new_folder_name) {
     return p_->update_folder(folder_id, new_folder_name);
 }
 
-bool Client::delete_contents(const vector<string>& content_ids) {
+bool Client::delete_contents(const vector<string> &content_ids) {
     return p_->delete_contents(content_ids);
 }
 
-bool Client::exist_on_cloud(const string& file_path,
-                            const string& folder_id) {
+bool Client::exist_on_cloud(const string &file_path,
+                            const string &folder_id) {
     return p_->exist_on_cloud(file_path, folder_id);
 }
 

=== modified file 'src/mcloud/api/client_priv.cpp'
--- src/mcloud/api/client_priv.cpp	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/client_priv.cpp	2016-12-07 12:44:11 +0000
@@ -17,15 +17,11 @@
  */
 
 #include "client_priv.h"
-#include "downloadtask_priv.h"
 #include "config.h"
 
 #include <mcloud/api/cloudfolder.h>
 #include <mcloud/api/cloudcontent.h>
 #include <mcloud/api/diskinfo.h>
-#include <mcloud/api/downloadtask.h>
-#include <mcloud/api/uploadtask.h>
-#include <mcloud/api/cloudresource.h>
 #include <mcloud/api/outlink.h>
 #include <mcloud/api/exceptions.h>
 
@@ -59,26 +55,26 @@
 using namespace std;
 
 namespace {
-    void log(const string& info) {
-#ifndef NDEBUG
+    void log(const string &info) {
+    #ifndef NDEBUG
         cout << info << endl;
-#else
+    #else
         (void)(info);
-#endif
+    #endif
     }
 
-    static constexpr const char* content_type = "text/xml;UTF-8";
-    static constexpr const char* register_app_name = "和彩云ubuntu";
-    static constexpr const char* thirdparty_anonymous_account = "thirdparty_anonymous_account";
+    static constexpr const char *content_type = "text/xml;UTF-8";
+    static constexpr const char *register_app_name = "和彩云ubuntu";
+    static constexpr const char *thirdparty_anonymous_account = "thirdparty_anonymous_account";
 
-    string encode64(const string& val) {
+    string encode64(const string &val) {
         typedef base64_from_binary<transform_width<string::const_iterator, 6, 8>> iter;
         auto tmp = string(iter(std::begin(val)), iter(std::end(val)));
         return tmp.append((3 - val.size() % 3) % 3, '=');
     }
 
     static string md5sum(string filepath) {
-        std::ifstream  ifs(filepath, std::ios::binary);
+        ifstream  ifs(filepath, ios::binary);
 
         if (!ifs.good()) {
             std::cerr << "file is invalid: " << filepath << std::endl;
@@ -104,9 +100,9 @@
         return stream.str();
     }
 
-    static void append_child(tinyxml2::XMLPrinter& printer,
-                             const string& field,
-                             const string& value) {
+    static void append_child(tinyxml2::XMLPrinter &printer,
+                             const string &field,
+                             const string &value) {
         printer.OpenElement(field.c_str());
         printer.PushText(value.c_str());
         printer.CloseElement();
@@ -124,7 +120,7 @@
     static string generate_contents_body(int start_index = -1,
                                          int count = 200,
                                          CloudContent::Type content_type = CloudContent::Type::All,
-                                         const string& shared_folder_id = string()) {
+                                         const string &shared_folder_id = string()) {
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("getDisk");
 
@@ -137,11 +133,11 @@
         append_child(printer, "catalogID", shared_folder_id.empty() ? "root" : shared_folder_id.c_str());
         append_child(printer, "filterType", "0");
         append_child(printer, "catalogSortType", "0");
-        append_child(printer, "contentType", std::to_string((int)content_type).c_str());
+        append_child(printer, "contentType", to_string((int)content_type).c_str());
         append_child(printer, "contentSortType", "0");
         append_child(printer, "sortDirection", "1");
-        append_child(printer, "startNumber", std::to_string(start_index).c_str());
-        append_child(printer, "endNumber",  std::to_string(start_index + count - 1).c_str());
+        append_child(printer, "startNumber", to_string(start_index).c_str());
+        append_child(printer, "endNumber",  to_string(start_index + count - 1).c_str());
         append_child(printer, "catalogType", "-1");
 
         printer.CloseElement();
@@ -149,7 +145,7 @@
         return string(printer.CStr());
     }
 
-    static string generate_content_body(const string& content_id) {
+    static string generate_content_body(const string &content_id) {
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("getContentInfo");
         append_child(printer, "ContentID", content_id);
@@ -160,21 +156,21 @@
         return string(printer.CStr());
     }
 
-    static string generate_delete_body(const std::vector<string>& item_ids) {
+    static string generate_delete_body(const vector<string> &item_ids) {
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("delCatalogContent");
 
         append_child(printer, "MSISDN", thirdparty_anonymous_account);
         printer.OpenElement("catalogIDs");
-        printer.PushAttribute("length", std::to_string(item_ids.size()).c_str());
-        for (auto& item_id : item_ids) {
+        printer.PushAttribute("length", to_string(item_ids.size()).c_str());
+        for (const auto &item_id : item_ids) {
             append_child(printer, "ID", item_id.c_str());
         }
         printer.CloseElement();
 
         printer.OpenElement("contentIDs");
-        printer.PushAttribute("length", std::to_string(item_ids.size()).c_str());
-        for (auto& content_id : item_ids) {
+        printer.PushAttribute("length", to_string(item_ids.size()).c_str());
+        for (const auto &content_id : item_ids) {
             append_child(printer, "ID", content_id.c_str());
         }
         printer.CloseElement();
@@ -184,23 +180,23 @@
         return string(printer.CStr());
     }
 
-    static string generate_copy_body(const vector<string>& dir_ids,
-                                     const vector<string>& content_ids,
-                                     const string& new_folder_id) {
+    static string generate_copy_body(const vector<string> &dir_ids,
+                                     const vector<string> &content_ids,
+                                     const string &new_folder_id) {
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("copyContentCatalog");
 
         append_child(printer, "MSISDN", thirdparty_anonymous_account);
         printer.OpenElement("contentInfoList");
-        printer.PushAttribute("length", std::to_string(content_ids.size()).c_str());
-        for (auto& content_id : content_ids) {
+        printer.PushAttribute("length", to_string(content_ids.size()).c_str());
+        for (const auto &content_id : content_ids) {
             append_child(printer, "ID", content_id.c_str());
         }
         printer.CloseElement();
 
         printer.OpenElement("catalogInfoList");
-        printer.PushAttribute("length", std::to_string(dir_ids.size()).c_str());
-        for (auto& dir_id : dir_ids) {
+        printer.PushAttribute("length", to_string(dir_ids.size()).c_str());
+        for (const auto &dir_id : dir_ids) {
             append_child(printer, "ID", dir_id.c_str());
         }
         printer.CloseElement();
@@ -212,8 +208,8 @@
         return string(printer.CStr());
     }
 
-    static string generate_update_folder_body(const string& folder_id,
-                                              const string& new_folder_name) {
+    static string generate_update_folder_body(const string &folder_id,
+                                              const string &new_folder_name) {
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("updateCatalogInfo");
         append_child(printer, "MSISDN", thirdparty_anonymous_account);
@@ -224,8 +220,8 @@
         return string(printer.CStr());
     }
 
-    static string generate_create_folder_body(const string& folder_name,
-                                              const string& folder_id) {
+    static string generate_create_folder_body(const string &folder_name,
+                                              const string &folder_id) {
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("createCatalogExt");
         printer.OpenElement("createCatalogExtReq");
@@ -241,16 +237,16 @@
         return string(printer.CStr());
     }
 
-    static string generate_look_up_body(const string& name,
-                                        const string& folder_id,
+    static string generate_look_up_body(const string &name,
+                                        const string &folder_id,
                                         CloudResource::Property property) {
-#if 1
+    #if 1
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("advanceSearch");
         printer.OpenElement("advanceSearchReq");
 
         append_child(printer, "account", thirdparty_anonymous_account);
-        append_child(printer, "scope", std::to_string((int)property));
+        append_child(printer, "scope", to_string((int)property));
 
         printer.OpenElement("fileCond");
 
@@ -261,7 +257,7 @@
 
         printer.CloseElement();
         printer.CloseElement();
-#else
+    #else
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("simpleSearch");
         printer.OpenElement("simpleSearchReq");
@@ -272,28 +268,28 @@
 
         printer.CloseElement();
         printer.CloseElement();
-#endif
+    #endif
         return string(printer.CStr());
     }
 
-    static string generate_move_body(const Client::Stringlist& dir_ids,
-                                     const Client::Stringlist& content_ids,
-                                     const string& folder_id) {
+    static string generate_move_body(const Client::Stringlist &dir_ids,
+                                     const Client::Stringlist &content_ids,
+                                     const string &folder_id) {
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("moveContentCatalog");
 
         append_child(printer, "MSISDN", thirdparty_anonymous_account);
 
         printer.OpenElement("contentInfoList");
-        printer.PushAttribute("length", std::to_string(content_ids.size()).c_str());
-        for (auto& content_id : content_ids) {
+        printer.PushAttribute("length", to_string(content_ids.size()).c_str());
+        for (const auto &content_id : content_ids) {
             append_child(printer, "ID", content_id.c_str());
         }
         printer.CloseElement();
 
         printer.OpenElement("catalogInfoList");
-        printer.PushAttribute("length", std::to_string(dir_ids.size()).c_str());
-        for (auto& dir_id : dir_ids) {
+        printer.PushAttribute("length", to_string(dir_ids.size()).c_str());
+        for (const auto &dir_id : dir_ids) {
             append_child(printer, "ID", dir_id.c_str());
         }
         printer.CloseElement();
@@ -305,23 +301,23 @@
         return string(printer.CStr());
     }
 
-    static string generate_extranet_body(const Client::Stringlist& dir_ids,
-                                         const Client::Stringlist& content_ids) {
+    static string generate_extranet_body(const Client::Stringlist &dir_ids,
+                                         const Client::Stringlist &content_ids) {
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("getOutLink");
         printer.OpenElement("getOutLinkReq");
 
         append_child(printer, "account", thirdparty_anonymous_account);
         printer.OpenElement("caIDLst");
-        printer.PushAttribute("length", std::to_string(dir_ids.size()).c_str());
-        for (auto& dir_id : dir_ids) {
+        printer.PushAttribute("length", to_string(dir_ids.size()).c_str());
+        for (const auto &dir_id : dir_ids) {
             append_child(printer, "item", dir_id.c_str());
         }
         printer.CloseElement();
 
         printer.OpenElement("coIDLst");
-        printer.PushAttribute("length", std::to_string(content_ids.size()).c_str());
-        for (auto& content_id : content_ids) {
+        printer.PushAttribute("length", to_string(content_ids.size()).c_str());
+        for (const auto &content_id : content_ids) {
             append_child(printer, "item", content_id.c_str());
         }
         printer.CloseElement();
@@ -334,7 +330,7 @@
         return string(printer.CStr());
     }
 
-    static string generate_download_body(const string& content_id) {
+    static string generate_download_body(const string &content_id) {
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("downloadRequest");
         append_child(printer, "appName", register_app_name);
@@ -354,33 +350,33 @@
         return string(printer.CStr());
     }
 
-    static string generate_upload_body(const UploadRequest& request_item) {
+    static string generate_upload_body(const UploadRequest &request_item) {
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("pcUploadFileRequest");
         append_child(printer, "ownerMSISDN", thirdparty_anonymous_account);
         append_child(printer, "fileCount", "1");
 
         int64_t file_size = 0;
-        if (fs::exists(request_item.file_path)) {
-            file_size = fs::file_size(request_item.file_path);
+        if (fs::exists(request_item.local_file_path)) {
+            file_size = fs::file_size(request_item.local_file_path);
         } else {
-            throw std::runtime_error("file not exists");
+            throw runtime_error("file not exists");
         }
-        append_child(printer, "totalSize", std::to_string(file_size).c_str());
+        append_child(printer, "totalSize", to_string(file_size).c_str());
 
         printer.OpenElement("uploadContentList");
         printer.PushAttribute("length", "1");
 
         printer.OpenElement("uploadContentInfo");
         append_child(printer, "contentName", request_item.content_name.empty() ?
-                     fs::path(request_item.file_path).filename().c_str() : request_item.content_name);
-        append_child(printer, "contentSize", std::to_string(file_size).c_str());
+                     fs::path(request_item.local_file_path).filename().c_str() : request_item.content_name);
+        append_child(printer, "contentSize", to_string(file_size).c_str());
         append_child(printer, "contentDesc", "");
         append_child(printer, "contentTAGList", "");
 
         //The parameter to check upload files' md5sum
         //"isNeedupload" field in response body will indicate if the file exists in mcloud.
-        append_child(printer, "digest", md5sum(request_item.file_path));
+        append_child(printer, "digest", md5sum(request_item.local_file_path));
 
         printer.CloseElement();
         printer.CloseElement();
@@ -392,20 +388,20 @@
         return string(printer.CStr());
     }
 
-    static string generate_upload_body(const UploadBufferCb& buffer_cb) {
+    static string generate_upload_body(const UploadBufferCb &buffer_cb) {
         tinyxml2::XMLPrinter printer;
         printer.OpenElement("pcUploadFileRequest");
         append_child(printer, "ownerMSISDN", thirdparty_anonymous_account);
         append_child(printer, "fileCount", "1");
 
-        append_child(printer, "totalSize", std::to_string(buffer_cb.buffer_size).c_str());
+        append_child(printer, "totalSize", to_string(buffer_cb.total_size).c_str());
 
         printer.OpenElement("uploadContentList");
         printer.PushAttribute("length", "1");
 
         printer.OpenElement("uploadContentInfo");
         append_child(printer, "contentName", buffer_cb.content_name);
-        append_child(printer, "contentSize", std::to_string(buffer_cb.buffer_size).c_str());
+        append_child(printer, "contentSize", to_string(buffer_cb.total_size).c_str());
         append_child(printer, "contentDesc", "");
         append_child(printer, "contentTAGList", "");
 
@@ -421,8 +417,8 @@
     }
 
     template<typename T>
-    static void set_auth_exception(const shared_ptr<std::promise<T>>& prom,
-                                   const string json_data) {
+    static void set_auth_exception(const shared_ptr<std::promise<T>> &prom,
+                                   const string &json_data) {
 
         string error_info = json_data;
         boost::cmatch cap;
@@ -435,34 +431,33 @@
     }
 
     template<typename T>
-    static void set_exception(const shared_ptr<std::promise<T>>& prom,
-                              const tinyxml2::XMLElement* root) {
+    static void set_exception(const shared_ptr<std::promise<T>> &prom,
+                              const tinyxml2::XMLElement *root) {
         ClientPriv::ServerCode err_code = (ClientPriv::ServerCode)stoi(root->Attribute("resultCode"));
         switch (err_code) {
-            case ClientPriv::ServerCode::CATALOGID_INVALID:
-            case ClientPriv::ServerCode::CONTENTID_INVALID:
-                prom->set_exception(make_exception_ptr(InvalidIDException(root->Attribute("desc"))));
-                break;
-            case ClientPriv::ServerCode::CATALOG_NOT_EXIST:
-            case ClientPriv::ServerCode::CONTENT_AND_CATALOG_NOT_EXIST:
-            case ClientPriv::ServerCode::CONTENT_NOT_EXIST:
-                prom->set_exception(make_exception_ptr(NonExistentException(root->Attribute("desc"))));
-                break;
-            case ClientPriv::ServerCode::USER_SPACE_LACKED:
-                prom->set_exception(make_exception_ptr(OutofSpaceException(root->Attribute("desc"))));
-                break;
-            case ClientPriv::ServerCode::PARAMETER_INVALID:
-                prom->set_exception(make_exception_ptr(ParameterInvalidException(root->Attribute("desc"))));
-                break;
-            case ClientPriv::ServerCode::CREDENTIAL_FAILED:
-                prom->set_exception(make_exception_ptr(CredentialException(root->Attribute("desc"))));
-                break;
-            default:
-                prom->set_exception(make_exception_ptr(runtime_error(root->Attribute("desc"))));
-                break;
+        case ClientPriv::ServerCode::CATALOGID_INVALID:
+        case ClientPriv::ServerCode::CONTENTID_INVALID:
+            prom->set_exception(make_exception_ptr(InvalidIDException(root->Attribute("desc"))));
+            break;
+        case ClientPriv::ServerCode::CATALOG_NOT_EXIST:
+        case ClientPriv::ServerCode::CONTENT_AND_CATALOG_NOT_EXIST:
+        case ClientPriv::ServerCode::CONTENT_NOT_EXIST:
+            prom->set_exception(make_exception_ptr(NonExistentException(root->Attribute("desc"))));
+            break;
+        case ClientPriv::ServerCode::USER_SPACE_LACKED:
+            prom->set_exception(make_exception_ptr(OutofSpaceException(root->Attribute("desc"))));
+            break;
+        case ClientPriv::ServerCode::PARAMETER_INVALID:
+            prom->set_exception(make_exception_ptr(ParameterInvalidException(root->Attribute("desc"))));
+            break;
+        case ClientPriv::ServerCode::CREDENTIAL_FAILED:
+            prom->set_exception(make_exception_ptr(CredentialException(root->Attribute("desc"))));
+            break;
+        default:
+            prom->set_exception(make_exception_ptr(runtime_error(root->Attribute("desc"))));
+            break;
         }
     }
-
 }
 
 class ClientPriv::HttpClient {
@@ -470,9 +465,7 @@
     HttpClient(int request_timeout) :
         client_(http::make_client()),
         cancelled_(false),
-        worker_ {[this]() {
-        client_->run();
-    }} {
+        worker_ {[this]() { client_->run(); }} {
         config_.request_timeout = request_timeout;
     }
 
@@ -493,9 +486,9 @@
 
     std::thread worker_;
 
-    void get(const net::Uri::Path& path,
-             const net::Uri::QueryParameters& parameters,
-             http::Request::Handler& handler) {
+    void get(const net::Uri::Path &path,
+             const net::Uri::QueryParameters &parameters,
+             http::Request::Handler &handler) {
         auto configuration = net_config(path, parameters);
         configuration.header.add("User-Agent", config_.user_agent);
 
@@ -503,11 +496,11 @@
         request->async_execute(handler);
     }
 
-    void post(const net::Uri::Path& path,
-              const net::Uri::QueryParameters& parameters,
-              const string& postbody,
-              const string& content_type,
-              http::Request::Handler& handler) {
+    void post(const net::Uri::Path &path,
+              const net::Uri::QueryParameters &parameters,
+              const string &postbody,
+              const string &content_type,
+              http::Request::Handler &handler) {
         std::lock_guard<std::mutex> lock(config_mutex_);
         http::Request::Configuration configuration = net_config(path, parameters);
         configuration.header.add("User-Agent", config_.user_agent);
@@ -518,8 +511,8 @@
         request->async_execute(handler);
     }
 
-    http::Request::Configuration net_config(const net::Uri::Path& path,
-                                            const net::Uri::QueryParameters& parameters) {
+    http::Request::Configuration net_config(const net::Uri::Path &path,
+                                            const net::Uri::QueryParameters &parameters) {
         http::Request::Configuration configuration;
         net::Uri::QueryParameters complete_parameters(parameters);
         if (!config_.access_token.empty()) {
@@ -543,14 +536,14 @@
     }
 
     template<typename T>
-    future<T> async_get(const net::Uri::Path& path,
-                        const net::Uri::QueryParameters& parameters,
-                        const function<T(const tinyxml2::XMLElement* root)>& func) {
+    future<T> async_get(const net::Uri::Path &path,
+                        const net::Uri::QueryParameters &parameters,
+                        const function<T(const tinyxml2::XMLElement *root)> &func) {
         auto prom = make_shared<promise<T>>();
 
         http::Request::Handler handler;
         handler.on_progress(
-        [this](const http::Request::Progress& /*progress*/) {
+        [this](const http::Request::Progress & /*progress*/) {
             return cancelled_ ?
                    http::Request::Progress::Next::abort_operation :
                    http::Request::Progress::Next::continue_operation;
@@ -562,7 +555,7 @@
         [prom, func](const http::Response & response) {
             tinyxml2::XMLDocument doc;
             tinyxml2::XMLError error = doc.Parse(response.body.c_str());
-            const tinyxml2::XMLElement* root = doc.FirstChildElement();
+            const tinyxml2::XMLElement *root = doc.FirstChildElement();
 
             if (error != tinyxml2::XML_SUCCESS) {
                 prom->set_exception(make_exception_ptr(runtime_error("xml parse failed")));
@@ -579,16 +572,16 @@
     }
 
     template<typename T>
-    future<T> async_post(const net::Uri::Path& path,
-                         const net::Uri::QueryParameters& parameters,
-                         const string& postmsg,
-                         const string& content_type,
-                         const function<T(const tinyxml2::XMLElement* root)>& func) {
+    future<T> async_post(const net::Uri::Path &path,
+                         const net::Uri::QueryParameters &parameters,
+                         const string &postmsg,
+                         const string &content_type,
+                         const function<T(const tinyxml2::XMLElement *root)> &func) {
         auto prom = make_shared<promise<T>>();
 
         http::Request::Handler handler;
         handler.on_progress(
-        [this](const http::Request::Progress& /*progress*/) {
+        [this](const http::Request::Progress & /*progress*/) {
             return cancelled_ ?
                    http::Request::Progress::Next::abort_operation :
                    http::Request::Progress::Next::continue_operation;
@@ -614,7 +607,7 @@
             } else {
                 error = doc.Parse(response.body.c_str());
             }
-            const tinyxml2::XMLElement* result = doc.FirstChildElement();
+            const tinyxml2::XMLElement *result = doc.FirstChildElement();
 
             if (error != tinyxml2::XML_SUCCESS) {
                 set_auth_exception(prom, response.body);
@@ -643,9 +636,9 @@
     httpclient_->cancelled_ = true;
 }
 
-string ClientPriv::cloud_sync_folder_id() {
+string ClientPriv::root_folder_id() {
     Client::ResourceList folderlist = cloud_root_folder_list();
-    for (auto& folder : folderlist) {
+    for (auto &folder : folderlist) {
         CloudFolder::Ptr cloudfolder = std::static_pointer_cast<CloudFolder>(folder);
         if (cloudfolder->folder_type() == CloudFolder::Type::Sync) {
             return cloudfolder->id();
@@ -655,14 +648,14 @@
     return string();
 }
 
-void ClientPriv::set_access_token(const string& access_token) {
+void ClientPriv::set_access_token(const string &access_token) {
     httpclient_->config_.access_token = access_token;
 }
 
-bool ClientPriv::exist_on_cloud(const string& file_path,
-                                const string& folder_id) {
+bool ClientPriv::exist_on_cloud(const string &file_path,
+                                const string &folder_id) {
     if (!fs::exists(file_path)) {
-        throw std::runtime_error(string("file not exists: ").append(file_path));
+        throw runtime_error(string("file not exists: ").append(file_path));
     }
 
     UploadRequest request_item{file_path, folder_id, ""};
@@ -688,7 +681,7 @@
 Client::ResourceList ClientPriv::cloud_content_list(int start_index,
                                                     int count,
                                                     CloudContent::Type type,
-                                                    const string& folder_id) {
+                                                    const string &folder_id) {
     string postbody = generate_contents_body(start_index,
                       count,
                       type,
@@ -696,122 +689,96 @@
     return cloud_content_list_internal(postbody);
 }
 
-CloudContent::Ptr ClientPriv::content_info(const string& content_id) {
+CloudContent::Ptr ClientPriv::content_info(const string &content_id) {
     string postbody = generate_content_body(content_id);
     return content_item_internal(postbody);
 }
 
-CloudFolder::Ptr ClientPriv::create_folder(const string& folder_name,
-        const string& folder_id) {
+CloudFolder::Ptr ClientPriv::create_folder(const string &folder_name,
+                                           const string &folder_id) {
     string postbody = generate_create_folder_body(folder_name, folder_id);
     return create_folder_internal(postbody);
 }
 
-Client::ResourceList ClientPriv::look_up(const string& name,
-                                         const string& folder_id,
+Client::ResourceList ClientPriv::look_up(const string &name,
+                                         const string &folder_id,
                                          CloudResource::Property property) {
     string postbody = generate_look_up_body(name, folder_id, property);
     return look_up_internal(postbody);
 }
 
-bool ClientPriv::move_items(const Client::Stringlist& folder_ids,
-                            const Client::Stringlist& content_ids,
-                            const string& folder_id) {
+bool ClientPriv::move_items(const Client::Stringlist &folder_ids,
+                            const Client::Stringlist &content_ids,
+                            const string &folder_id) {
     string postbody = generate_move_body(folder_ids, content_ids,
                                          folder_id);
     return move_items_internal(postbody);
 }
 
-bool ClientPriv::update_folder(const string& folder_id,
-                               const string& new_folder_name) {
+bool ClientPriv::update_folder(const string &folder_id,
+                               const string &new_folder_name) {
     string postbody = generate_update_folder_body(folder_id, new_folder_name);
     return update_internal(postbody);
 }
 
-bool ClientPriv::delete_contents(const Client::Stringlist& content_ids) {
+bool ClientPriv::delete_contents(const Client::Stringlist &content_ids) {
     string postbody = generate_delete_body(content_ids);
     return delete_internal(postbody);
 }
 
-Client::Stringlist ClientPriv::copy_folders(const Client::Stringlist& folder_ids,
-                                            const string& folder_id) {
+Client::Stringlist ClientPriv::copy_folders(const Client::Stringlist &folder_ids,
+                                            const string &folder_id) {
     string postbody = generate_copy_body(folder_ids, vector<string> {},
                                          folder_id);
     return copy_internal(postbody);
 }
 
-Client::Stringlist ClientPriv::copy_contents(const Client::Stringlist& content_ids,
-                                             const string& folder_id) {
+Client::Stringlist ClientPriv::copy_contents(const Client::Stringlist &content_ids,
+                                             const string &folder_id) {
     string postbody = generate_copy_body(Client::Stringlist{}, content_ids,
                                          folder_id);
     return copy_internal(postbody);
 }
 
-Client::OutlinkList ClientPriv::create_folder_sharing_url(const Client::Stringlist& folder_ids) {
+Client::OutlinkList ClientPriv::create_folder_sharing_url(const Client::Stringlist &folder_ids) {
     string postbody = generate_extranet_body(folder_ids, Client::Stringlist{});
     return create_url_internal(postbody);
 }
 
-Client::OutlinkList ClientPriv::create_content_sharing_url(const Client::Stringlist& content_ids) {
+Client::OutlinkList ClientPriv::create_content_sharing_url(const Client::Stringlist &content_ids) {
     string postbody = generate_extranet_body(Client::Stringlist{}, content_ids);
     return create_url_internal(postbody);
 }
 
-DownloadTaskPriv::Ptr ClientPriv::create_download_link(const string& content_id) {
-    string postbody = generate_download_body({{content_id}});
-
-    log(postbody);
-
-    auto future = httpclient_->async_post<DownloadTaskPriv::Ptr>(
-    { "richlifeApp", "devapp", "IUploadAndDownload" }, { }, postbody, content_type,
-    [](const tinyxml2::XMLElement * root) {
-
-        auto link_list = root->FirstChildElement("String");
-        if (link_list) {
-            auto link = link_list->FirstChildElement();
-            while (link) {
-                return std::make_shared<DownloadTaskPriv>(link);
-            }
-
-            if (link_list->GetText()) {
-                return std::make_shared<DownloadTaskPriv>(link_list);
-            }
-        }
-        return DownloadTaskPriv::Ptr();
-    });
-
-    return get_or_throw(future);
-}
-
-DownloadTaskPriv::Ptr ClientPriv::create_download_link(const DownloadBufferCb& buffer_cb) {
-    string postbody = generate_download_body(buffer_cb.content_id);
-
-    log(postbody);
-
-    auto future = httpclient_->async_post<DownloadTaskPriv::Ptr>(
-    { "richlifeApp", "devapp", "IUploadAndDownload" }, { }, postbody, content_type,
-    [buffer_cb](const tinyxml2::XMLElement * root) {
-
-        auto link_list = root->FirstChildElement("String");
-        if (link_list) {
-            auto link = link_list->FirstChildElement();
-            while (link) {
-                return std::make_shared<DownloadTaskPriv>(link, buffer_cb.write_cb);
-            }
-
-            if (link_list->GetText()) {
-                return std::make_shared<DownloadTaskPriv>(link_list, buffer_cb.write_cb);
-            }
-        }
-        return DownloadTaskPriv::Ptr();
-    });
-
-    return get_or_throw(future);
-}
-
-UploadTaskPriv::Ptr ClientPriv::create_upload_link(const UploadRequest& request_item) {
-    if (!fs::exists(request_item.file_path)) {
-        throw std::runtime_error(string("file not exists: ").append(request_item.file_path));
+DownloadTaskPriv::Ptr ClientPriv::create_download_link(const DownloadRequest &request_item) {
+    string postbody = generate_download_body(request_item.item_id);
+
+    log(postbody);
+
+    auto future = httpclient_->async_post<DownloadTaskPriv::Ptr>(
+    { "richlifeApp", "devapp", "IUploadAndDownload" }, { }, postbody, content_type,
+    [request_item](const tinyxml2::XMLElement * root) {
+
+        auto link_list = root->FirstChildElement("String");
+        if (link_list) {
+            auto link = link_list->FirstChildElement();
+            while (link) {
+                return std::make_shared<DownloadTaskPriv>(link, request_item.write_cb);
+            }
+
+            if (link_list->GetText()) {
+                return std::make_shared<DownloadTaskPriv>(link_list, request_item.write_cb);
+            }
+        }
+        return DownloadTaskPriv::Ptr();
+    });
+
+    return get_or_throw(future);
+}
+
+UploadTaskPriv::Ptr ClientPriv::create_upload_link(const UploadRequest &request_item) {
+    if (!fs::exists(request_item.local_file_path)) {
+        throw runtime_error(string("file not exists: ").append(request_item.local_file_path));
     }
 
     string postbody = generate_upload_body(request_item);
@@ -835,7 +802,7 @@
                 return std::make_shared<UploadTaskPriv>(content,
                                                         task_id,
                                                         redirection_url,
-                                                        request_item.file_path);
+                                                        request_item.local_file_path);
             }
         }
 
@@ -845,7 +812,7 @@
     return get_or_throw(future);
 }
 
-UploadTaskPriv::Ptr ClientPriv::create_upload_link(const UploadBufferCb& buffer_cb) {
+UploadTaskPriv::Ptr ClientPriv::create_upload_link(const UploadBufferCb &buffer_cb) {
     string postbody = generate_upload_body(buffer_cb);
 
     log(postbody);
@@ -870,7 +837,7 @@
                 return std::make_shared<UploadTaskPriv>(content,
                                                         task_id,
                                                         redirection_url,
-                                                        buffer_cb.buffer_size,
+                                                        buffer_cb.total_size,
                                                         buffer_cb.read_cb);
             }
         }
@@ -907,7 +874,7 @@
     return get_or_throw(future);
 }
 
-Client::ResourceList ClientPriv::cloud_content_list_internal(const string& postbody) {
+Client::ResourceList ClientPriv::cloud_content_list_internal(const string &postbody) {
     log(postbody);
 
     auto future = httpclient_->async_post<Client::ResourceList>(
@@ -921,7 +888,7 @@
             auto folder_ele = folder_list->FirstChildElement();
             while (folder_ele) {
                 results.emplace_back(std::shared_ptr<CloudFolder>(
-                                         new CloudFolder(folder_ele)));
+                    new CloudFolder(folder_ele)));
                 folder_ele = folder_ele->NextSiblingElement();
             }
         }
@@ -941,7 +908,7 @@
     return get_or_throw(future);
 }
 
-CloudContent::Ptr ClientPriv::content_item_internal(const string& postbody) {
+CloudContent::Ptr ClientPriv::content_item_internal(const string &postbody) {
     log(postbody);
 
     auto future = httpclient_->async_post<CloudContent::Ptr>(
@@ -957,7 +924,7 @@
     return get_or_throw(future);
 }
 
-CloudFolder::Ptr ClientPriv::create_folder_internal(const string& postbody) {
+CloudFolder::Ptr ClientPriv::create_folder_internal(const string &postbody) {
     log(postbody);
 
     auto future =  httpclient_->async_post<CloudFolder::Ptr>(
@@ -973,7 +940,7 @@
     return get_or_throw(future);
 }
 
-Client::ResourceList ClientPriv::look_up_internal(const string& postbody) {
+Client::ResourceList ClientPriv::look_up_internal(const string &postbody) {
     log(postbody);
 
     auto future =  httpclient_->async_post<Client::ResourceList>(
@@ -987,7 +954,7 @@
             auto folder_ele = folder_list->FirstChildElement();
             while (folder_ele) {
                 results.emplace_back(std::shared_ptr<CloudFolder>(
-                                         new CloudFolder(folder_ele)));
+                    new CloudFolder(folder_ele)));
                 folder_ele = folder_ele->NextSiblingElement();
             }
         }
@@ -1007,7 +974,7 @@
     return get_or_throw(future);
 }
 
-bool ClientPriv::exist_on_cloud_internal(const string& postbody) {
+bool ClientPriv::exist_on_cloud_internal(const string &postbody) {
     log(postbody);
 
     auto future = httpclient_->async_post<bool>(
@@ -1030,11 +997,11 @@
     return get_or_throw(future);
 }
 
-bool ClientPriv::move_items_internal(const string& postbody) {
+bool ClientPriv::move_items_internal(const string &postbody) {
     return update_internal(postbody);
 }
 
-bool ClientPriv::update_internal(const string& postbody) {
+bool ClientPriv::update_internal(const string &postbody) {
     log(postbody);
 
     auto future =  httpclient_->async_post<bool>(
@@ -1046,7 +1013,7 @@
     return get_or_throw(future);
 }
 
-bool ClientPriv::delete_internal(const string& postbody) {
+bool ClientPriv::delete_internal(const string &postbody) {
     log(postbody);
 
     auto future =  httpclient_->async_post<bool>(
@@ -1058,7 +1025,7 @@
     return get_or_throw(future);
 }
 
-Client::Stringlist ClientPriv::copy_internal(const string& postbody) {
+Client::Stringlist ClientPriv::copy_internal(const string &postbody) {
     log(postbody);
 
     auto future =  httpclient_->async_post<Client::Stringlist>(
@@ -1081,7 +1048,7 @@
     return get_or_throw(future);
 }
 
-Client::OutlinkList ClientPriv::create_url_internal(const string& postbody) {
+Client::OutlinkList ClientPriv::create_url_internal(const string &postbody) {
     log(postbody);
 
     auto future = httpclient_->async_post<Client::OutlinkList>(
@@ -1104,7 +1071,7 @@
     return get_or_throw(future);
 }
 
-bool ClientPriv::refersh_token(const string& refresh_token) {
+bool ClientPriv::refersh_token(const string &refresh_token) {
     const string content_type = "application/x-www-form-urlencoded";
     const string postbody     = "grant_type=refresh_token&refresh_token="
                                 + refresh_token;
@@ -1133,7 +1100,7 @@
     httpclient_->cancelled_ = true;
 }
 
-template<typename T> T ClientPriv::get_or_throw(std::future<T>& f) {
+template<typename T> T ClientPriv::get_or_throw(std::future<T> &f) {
     if (f.wait_for(std::chrono::seconds(httpclient_->config_.request_timeout)) !=
             std::future_status::ready) {
         throw HttpTimeoutException("HTTP request timeout");

=== modified file 'src/mcloud/api/client_priv.h'
--- src/mcloud/api/client_priv.h	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/client_priv.h	2016-12-07 12:44:11 +0000
@@ -24,7 +24,6 @@
 #include <mcloud/api/cloudresource.h>
 
 #include <future>
-#include <string>
 #include <memory>
 
 #include "downloadtask_priv.h"
@@ -53,57 +52,56 @@
 
     virtual ~ClientPriv();
 
+    void set_access_token(const std::string &access_token);
+
+    bool refersh_token(const std::string &refresh_token);
+
     DiskInfo::Ptr disk_info();
 
-    std::string cloud_sync_folder_id();
-
-    void set_access_token(const std::string& access_token);
-
-    CloudContent::Ptr   content_info(const std::string& content_id);
-
-    CloudFolder::Ptr    create_folder(const std::string& folder_name,
-                                      const std::string& folder_id);
-
-    Client::ResourceList look_up(const std::string& name,
-                                 const std::string& folder_id,
+    std::string root_folder_id();
+
+    CloudContent::Ptr content_info(const std::string &content_id);
+
+    CloudFolder::Ptr  create_folder(const std::string &folder_name,
+                                    const std::string &folder_id);
+
+    Client::ResourceList look_up(const std::string &name,
+                                 const std::string &folder_id,
                                  CloudResource::Property property = CloudResource::Property::Content);
 
-    bool refersh_token(const std::string& refresh_token);
-
-    bool move_items(const Client::Stringlist& folder_ids,
-                    const Client::Stringlist& content_ids,
-                    const std::string& folder_id);
-
-    bool exist_on_cloud(const std::string& file_path, const std::string& folder_id);
-
-    bool update_folder(const std::string& folder_id,
-                       const std::string& new_name);
-
-    bool delete_contents(const Client::Stringlist& content_ids);
-
-    Client::Stringlist copy_folders(const Client::Stringlist& folder_ids,
-                                    const std::string& folder_id);
-
-    Client::Stringlist copy_contents(const Client::Stringlist& content_ids,
-                                     const std::string& folder_id);
+    bool move_items(const Client::Stringlist &folder_ids,
+                    const Client::Stringlist &content_ids,
+                    const std::string &folder_id);
+
+    bool exist_on_cloud(const std::string &file_path, const std::string &folder_id);
+
+    bool update_folder(const std::string &folder_id,
+                       const std::string &new_name);
+
+    bool delete_contents(const Client::Stringlist &content_ids);
+
+    Client::Stringlist copy_folders(const Client::Stringlist &folder_ids,
+                                    const std::string &folder_id);
+
+    Client::Stringlist copy_contents(const Client::Stringlist &content_ids,
+                                     const std::string &folder_id);
 
     Client::ResourceList cloud_content_list(int start_index,
                                             int count,
                                             CloudContent::Type content_type = CloudContent::Type::All,
-                                            const std::string& folder_id = std::string());
-
-    Client::OutlinkList create_folder_sharing_url(const Client::Stringlist& folder_ids);
-
-    Client::OutlinkList create_content_sharing_url(const Client::Stringlist& content_ids);
-
-    DownloadTaskPriv::Ptr create_download_link(const std::string&  content_id);
-
-    DownloadTaskPriv::Ptr create_download_link(const DownloadBufferCb&  buffer_cb);
-
-    //Same name files in different directories are not allowed to upload to mcloud because of file names conflicts.
-    UploadTaskPriv::Ptr create_upload_link(const UploadRequest& reqeust_item);
-
-    UploadTaskPriv::Ptr create_upload_link(const UploadBufferCb& buffer_cb);
+                                            const std::string &folder_id = std::string());
+
+    Client::OutlinkList create_folder_sharing_url(const Client::Stringlist &folder_ids);
+
+    Client::OutlinkList create_content_sharing_url(const Client::Stringlist &content_ids);
+
+    DownloadTaskPriv::Ptr create_download_link(const std::string &content_id);
+
+    DownloadTaskPriv::Ptr create_download_link(const DownloadRequest &request_item);
+
+    UploadTaskPriv::Ptr create_upload_link(const UploadRequest &reqeust_item);
+
+    UploadTaskPriv::Ptr create_upload_link(const UploadBufferCb &buffer_cb);
 
     void cancel();
 
@@ -112,27 +110,27 @@
   private:
     Client::ResourceList cloud_root_folder_list();
 
-    Client::ResourceList cloud_content_list_internal(const std::string& postbody);
-
-    CloudContent::Ptr content_item_internal(const std::string& postbody);
-
-    CloudFolder::Ptr create_folder_internal(const std::string& postbody);
-
-    Client::ResourceList look_up_internal(const std::string& postbody);
-
-    bool exist_on_cloud_internal(const std::string& postbody);
-
-    bool move_items_internal(const std::string& postbody);
-
-    bool update_internal(const std::string& postbody);
-
-    bool delete_internal(const std::string& postbody);
-
-    Client::Stringlist copy_internal(const std::string& postbody);
-
-    Client::OutlinkList create_url_internal(const std::string& postbody);
-
-    template<typename T> T get_or_throw(std::future<T>& f);
+    Client::ResourceList cloud_content_list_internal(const std::string &postbody);
+
+    CloudContent::Ptr content_item_internal(const std::string &postbody);
+
+    CloudFolder::Ptr create_folder_internal(const std::string &postbody);
+
+    Client::ResourceList look_up_internal(const std::string &postbody);
+
+    bool exist_on_cloud_internal(const std::string &postbody);
+
+    bool move_items_internal(const std::string &postbody);
+
+    bool update_internal(const std::string &postbody);
+
+    bool delete_internal(const std::string &postbody);
+
+    Client::Stringlist copy_internal(const std::string &postbody);
+
+    Client::OutlinkList create_url_internal(const std::string &postbody);
+
+    template<typename T> T get_or_throw(std::future<T> &f);
 
   private:
 

=== modified file 'src/mcloud/api/cloudcontent.cpp'
--- src/mcloud/api/cloudcontent.cpp	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/cloudcontent.cpp	2016-12-07 12:44:11 +0000
@@ -23,11 +23,11 @@
 using namespace mcloud::api;
 using namespace std;
 
-extern time_t string_to_time(const string& dt);
+extern time_t string_to_time(const string &dt);
 
 class CloudContent::Priv {
   public:
-    Priv(const tinyxml2::XMLElement* root) {
+    Priv(const tinyxml2::XMLElement *root) {
         name_ = root->FirstChildElement("contentName")->GetText();
         id_ = root->FirstChildElement("contentID")->GetText();
         created_date_ = string_to_time(root->FirstChildElement("uploadTime")->GetText());
@@ -101,38 +101,38 @@
     string parent_catalog_id_;
 };
 
-CloudContent::CloudContent(const tinyxml2::XMLElement* root)
+CloudContent::CloudContent(const tinyxml2::XMLElement *root)
     : p(new Priv(root)) {
 }
 
 CloudContent::~CloudContent() {
 }
 
-const string& CloudContent::id() const {
+const string &CloudContent::id() const {
     return p->id_;
 }
 
-const string& CloudContent::name() const {
+const string &CloudContent::name() const {
     return  p->name_;
 }
 
-const time_t& CloudContent::created_date() const {
+const time_t &CloudContent::created_date() const {
     return p->created_date_;
 }
 
-const time_t& CloudContent::updated_date() const {
+const time_t &CloudContent::updated_date() const {
     return p->updated_date_;
 }
 
-const string& CloudContent::parent_catalog_id() const {
+const string &CloudContent::parent_catalog_id() const {
     return p->parent_catalog_id_;
 }
 
-const string& CloudContent::etag() const {
+const string &CloudContent::etag() const {
     return p->etag_;
 }
 
-const string& CloudContent::owner() const {
+const string &CloudContent::owner() const {
     return p->owner_;
 }
 
@@ -140,7 +140,7 @@
     return CloudResource::Property::Content;
 }
 
-const string& CloudContent::suffix() const {
+const string &CloudContent::suffix() const {
     return p->suffix_;
 }
 
@@ -152,18 +152,18 @@
     return p->content_size_;
 }
 
-const string& CloudContent::description() const {
+const string &CloudContent::description() const {
     return p->description_;
 }
 
-const string& CloudContent::thumbnail_url() const {
+const string &CloudContent::thumbnail_url() const {
     return p->thumbnail_url_;
 }
 
-const string& CloudContent::big_thumbnail_url() const {
+const string &CloudContent::big_thumbnail_url() const {
     return p->big_thumbnail_url_;
 }
 
-const string& CloudContent::present_url() const {
+const string &CloudContent::present_url() const {
     return p->present_url_;
 }

=== modified file 'src/mcloud/api/cloudfolder.cpp'
--- src/mcloud/api/cloudfolder.cpp	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/cloudfolder.cpp	2016-12-07 12:44:11 +0000
@@ -27,7 +27,7 @@
 using namespace mcloud::api;
 using namespace std;
 
-time_t string_to_time(const string& dt) {
+time_t string_to_time(const string &dt) {
     struct tm tm;
     istringstream ss(dt);
     strptime(dt.c_str(), "%Y%m%d%H%M%S", &tm); // get put only available in GCC 5
@@ -36,7 +36,7 @@
 
 class CloudFolder::Priv {
   public:
-    Priv(const tinyxml2::XMLElement* root) {
+    Priv(const tinyxml2::XMLElement *root) {
         name_ = root->FirstChildElement("catalogName")->GetText();
         id_ = root->FirstChildElement("catalogID")->GetText();
         created_date_ = string_to_time(root->FirstChildElement("createTime")->GetText());
@@ -97,42 +97,42 @@
     string folder_path_;
 };
 
-CloudFolder::CloudFolder(const tinyxml2::XMLElement* root)
+CloudFolder::CloudFolder(const tinyxml2::XMLElement *root)
     : p_(new Priv(root)) {
 }
 
 CloudFolder::~CloudFolder() {
 }
 
-const string& CloudFolder::id() const {
+const string &CloudFolder::id() const {
     return p_->id_;
 }
 
-const string& CloudFolder::name() const {
+const string &CloudFolder::name() const {
     return p_->name_;
 }
 
-const time_t& CloudFolder::created_date() const {
+const time_t &CloudFolder::created_date() const {
     return p_->created_date_;
 }
 
-const time_t& CloudFolder::updated_date() const {
+const time_t &CloudFolder::updated_date() const {
     return p_->update_date_;
 }
 
-const string& CloudFolder::parent_catalog_id() const {
+const string &CloudFolder::parent_catalog_id() const {
     return p_->parent_catalog_id_;
 }
 
-const string& CloudFolder::folder_path() const {
+const string &CloudFolder::folder_path() const {
     return p_->folder_path_;
 }
 
-const string& CloudFolder::etag() const {
+const string &CloudFolder::etag() const {
     return p_->etag_;
 }
 
-const string& CloudFolder::owner() const {
+const string &CloudFolder::owner() const {
     return p_->owner_;
 }
 

=== modified file 'src/mcloud/api/diskinfo.cpp'
--- src/mcloud/api/diskinfo.cpp	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/diskinfo.cpp	2016-12-07 12:44:11 +0000
@@ -25,8 +25,8 @@
 
 class DiskInfo::Priv {
   public:
-    Priv(const tinyxml2::XMLElement* result) {
-        const tinyxml2::XMLElement* root = result->FirstChildElement();
+    Priv(const tinyxml2::XMLElement *result) {
+        const tinyxml2::XMLElement *root = result->FirstChildElement();
         free_disk_size_ = std::atoi(root->FirstChildElement("freeDiskSize")->GetText());
         disk_size_ = std::atoi(root->FirstChildElement("diskSize")->GetText());
     }
@@ -36,7 +36,7 @@
     int disk_size_;
 };
 
-DiskInfo::DiskInfo(const tinyxml2::XMLElement* result)
+DiskInfo::DiskInfo(const tinyxml2::XMLElement *result)
     : p_(new Priv(result)) {
 }
 

=== modified file 'src/mcloud/api/downloadtask.cpp'
--- src/mcloud/api/downloadtask.cpp	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/downloadtask.cpp	2016-12-07 12:44:11 +0000
@@ -24,46 +24,46 @@
 using namespace mcloud::api;
 using namespace std;
 
-DownloadTask::DownloadTask(const shared_ptr<DownloadTaskPriv>& p)
+DownloadTask::DownloadTask(const shared_ptr<DownloadTaskPriv> &p)
     : p_(p) {
 }
 
-const string& DownloadTask::task_url() const {
+const string &DownloadTask::task_url() const {
     return p_->task_url();
 }
 
 Task::Status DownloadTask::status() const {
-    return p_->task_handler()->status();
+    return p_->status();
 }
 
-const string& DownloadTask::task_id() const {
+const string &DownloadTask::task_id() const {
     return p_->content_id();  //for content download, task id is the content's id.
 }
 
-const string& DownloadTask::content_id() const {
+const string &DownloadTask::content_id() const {
     return p_->content_id();
 }
 
-const string& DownloadTask::content_name() const {
+const string &DownloadTask::content_name() const {
     return p_->content_name();
 }
 
-const string& DownloadTask::file_path() const {
+const string &DownloadTask::file_path() const {
     return p_->file_path();
 }
 
-Task::ProgressHandler& DownloadTask::progress_changed() {
+Task::ProgressHandler &DownloadTask::progress_changed() {
     return p_->progress_changed();
 }
 
-Task::StatusHandler& DownloadTask::status_changed() {
+Task::StatusHandler &DownloadTask::status_changed() {
     return p_->status_changed();
 }
 
-const string& DownloadTask::error_string() const {
+const string &DownloadTask::error_string() const {
     return p_->error_string();
 }
 
 void DownloadTask::cancel() {
-    p_->task_handler()->cancel();
+    p_->cancel();
 }

=== modified file 'src/mcloud/api/downloadtask_priv.cpp'
--- src/mcloud/api/downloadtask_priv.cpp	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/downloadtask_priv.cpp	2016-12-07 12:44:11 +0000
@@ -38,7 +38,7 @@
 namespace {
 static const string public_download_dir = string(getenv("HOME")) + "/Downloads";
 
-string decode64(const string& val) {
+string decode64(const string &val) {
     using namespace boost::archive::iterators;
     typedef transform_width<binary_from_base64<string::const_iterator>, 8, 6> iter;
     return boost::algorithm::trim_right_copy_if(string(iter(begin(val)),
@@ -48,7 +48,7 @@
 }
 }
 
-DownloadTaskPriv::DownloadTaskPriv(const tinyxml2::XMLElement* root,
+DownloadTaskPriv::DownloadTaskPriv(const tinyxml2::XMLElement *root,
                                    const Task::Buffer_Callback write_cb)
     : progress_handler_(nullptr),
       status_handler_(nullptr),
@@ -70,11 +70,10 @@
 
     if (!buffer_callback_) {
         // create temp file path in temp path for writing
-        file_path_ = fs::path(fs::temp_directory_path() / fs::unique_path())
-                     .string();
+        file_path_ = fs::path(fs::temp_directory_path() / fs::unique_path()).string();
     }
 
-    task_handler_->on_prepare() = [this](void*) {
+    task_handler_->on_prepare() = [this](void *) {
         if (!buffer_callback_) {
             if (ofs_.is_open()) {
                 ofs_.close();
@@ -116,7 +115,7 @@
             if (!fs::exists(fs::path(download_dir))) {
                 try {
                     fs::create_directory(fs::path(download_dir));
-                } catch (boost::filesystem::filesystem_error& e) {
+                } catch (boost::filesystem::filesystem_error &e) {
                     cerr << "create download directory failed" << download_dir
                          <<  "error: " << e.what() << endl;
                 }
@@ -138,7 +137,7 @@
                 // rename in final when download is complete.
                 fs::rename(file_path_, dest);
                 file_path_ = dest.string();
-            } catch (boost::filesystem::filesystem_error& e) {
+            } catch (boost::filesystem::filesystem_error &e) {
                 cerr << "create download directory failed" << download_dir
                      <<  "error: " << e.what() << endl;
                 return false;
@@ -154,14 +153,14 @@
 
     task_handler_->on_ready_read() = [this](const string & data) {
         if (buffer_callback_) {
-            buffer_callback_((void*)data.c_str(), data.size());
+            buffer_callback_((void *)data.c_str(), data.size());
         } else {
             ofs_.write(data.c_str(), data.size());
         }
     };
 }
 
-const string& DownloadTaskPriv::task_url() const {
+const string &DownloadTaskPriv::task_url() const {
     return task_url_;
 }
 
@@ -169,39 +168,39 @@
     return task_handler_->status();
 }
 
-const string& DownloadTaskPriv::task_id() const {
+const string &DownloadTaskPriv::task_id() const {
     return content_id_;  //for content download, task id is the content's id.
 }
 
-const string& DownloadTaskPriv::content_id() const {
+const string &DownloadTaskPriv::content_id() const {
     return content_id_;
 }
 
-const string& DownloadTaskPriv::content_name() const {
+const string &DownloadTaskPriv::content_name() const {
     return content_name_;
 }
 
-const string& DownloadTaskPriv::file_path() const {
+const string &DownloadTaskPriv::file_path() const {
     return file_path_;
 }
 
-Task::ProgressHandler& DownloadTaskPriv::progress_changed() {
+Task::ProgressHandler &DownloadTaskPriv::progress_changed() {
     return progress_handler_;
 }
 
-Task::StatusHandler& DownloadTaskPriv::status_changed() {
+Task::StatusHandler &DownloadTaskPriv::status_changed() {
     return status_handler_;
 }
 
-Task::Buffer_Callback& DownloadTaskPriv::buffer_callback() {
+Task::Buffer_Callback &DownloadTaskPriv::buffer_callback() {
     return buffer_callback_;
 }
 
-const string& DownloadTaskPriv::error_string() const {
+const string &DownloadTaskPriv::error_string() const {
     return error_string_;
 }
 
-void DownloadTaskPriv::set_error_string(const string& err) {
+void DownloadTaskPriv::set_error_string(const string &err) {
     error_string_ = err;
 }
 

=== modified file 'src/mcloud/api/downloadtask_priv.h'
--- src/mcloud/api/downloadtask_priv.h	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/downloadtask_priv.h	2016-12-07 12:44:11 +0000
@@ -25,7 +25,7 @@
 #include <fstream>
 
 namespace tinyxml2 {
-class XMLElement;
+    class XMLElement;
 }
 
 namespace mcloud {
@@ -37,32 +37,32 @@
   public:
     typedef std::shared_ptr<DownloadTaskPriv>  Ptr;
 
-    DownloadTaskPriv(const tinyxml2::XMLElement* root,
+    DownloadTaskPriv(const tinyxml2::XMLElement *root,
                      const Task::Buffer_Callback write_cb = nullptr);
 
     virtual ~DownloadTaskPriv() = default;
 
-    const std::string& task_url() const;
+    const std::string &task_url() const;
 
     Task::Status status() const;
 
-    const std::string& task_id() const;
-
-    const std::string& content_id() const;
-
-    const std::string& content_name() const;
-
-    const std::string& file_path() const;
-
-    const std::string& error_string() const;
-
-    void set_error_string(const std::string& err);
-
-    Task::ProgressHandler& progress_changed();
-
-    Task::StatusHandler& status_changed();
-
-    Task::Buffer_Callback& buffer_callback();
+    const std::string &task_id() const;
+
+    const std::string &content_id() const;
+
+    const std::string &content_name() const;
+
+    const std::string &file_path() const;
+
+    const std::string &error_string() const;
+
+    void set_error_string(const std::string &err);
+
+    Task::ProgressHandler &progress_changed();
+
+    Task::StatusHandler &status_changed();
+
+    Task::Buffer_Callback &buffer_callback();
 
     void cancel();
 

=== modified file 'src/mcloud/api/outlink.cpp'
--- src/mcloud/api/outlink.cpp	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/outlink.cpp	2016-12-07 12:44:11 +0000
@@ -25,7 +25,7 @@
 
 class Outlink::Priv {
   public:
-    Priv(const tinyxml2::XMLElement* root) {
+    Priv(const tinyxml2::XMLElement *root) {
         id_ = root->FirstChildElement("objID")->GetText();
         link_ = root->FirstChildElement("linkUrl")->GetText();
     }
@@ -35,17 +35,17 @@
     std::string link_;
 };
 
-Outlink::Outlink(const tinyxml2::XMLElement* root)
+Outlink::Outlink(const tinyxml2::XMLElement *root)
     : p_(new Priv(root)) {
 }
 
 Outlink::~Outlink() {
 }
 
-const string& Outlink::id() const {
+const string &Outlink::id() const {
     return p_->id_;
 }
 
-const string& Outlink::link() const {
+const string &Outlink::link() const {
     return p_->link_;
 }

=== modified file 'src/mcloud/api/syncmanager.cpp'
--- src/mcloud/api/syncmanager.cpp	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/syncmanager.cpp	2016-12-07 12:44:11 +0000
@@ -22,12 +22,10 @@
 #include "syncmanager_priv.h"
 #include "client_priv.h"
 
-#include <iostream>
-
 using namespace mcloud::api;
 using namespace std;
 
-SyncManager::SyncManager(ClientPriv* client_priv)
+SyncManager::SyncManager(ClientPriv *client_priv)
     : p_(new SyncManagerPriv(client_priv)) {
 
 }
@@ -47,22 +45,18 @@
     p_->pause();
 }
 
-UploadTask::Ptr SyncManager::add_upload_task(const UploadRequest& request_item) {
+DownloadTask::Ptr SyncManager::add_download_task(const DownloadRequest &request_item) {
+    return p_->add_download_task(request_item);
+}
+
+UploadTask::Ptr SyncManager::add_upload_task(const UploadRequest &request_item) {
     return p_->add_upload_task(request_item);
 }
 
-UploadTask::Ptr SyncManager::add_upload_task(const UploadBufferCb& buffer_cb) {
+UploadTask::Ptr SyncManager::add_upload_task(const UploadBufferCb &buffer_cb) {
     return p_->add_upload_task(buffer_cb);
 }
 
-DownloadTask::Ptr SyncManager::add_download_task(const string& content_id) {
-    return p_->add_download_task(content_id);
-}
-
-DownloadTask::Ptr SyncManager::add_download_task(const DownloadBufferCb& buffer_cb) {
-    return p_->add_download_task(buffer_cb);
-}
-
 TaskQueue<std::shared_ptr<DownloadTask>> SyncManager::download_queue() {
     return p_->download_queue();
 }

=== modified file 'src/mcloud/api/syncmanager_priv.cpp'
--- src/mcloud/api/syncmanager_priv.cpp	2016-10-24 15:25:02 +0000
+++ src/mcloud/api/syncmanager_priv.cpp	2016-12-07 12:44:11 +0000
@@ -24,7 +24,7 @@
 using namespace mcloud::api;
 using namespace std;
 
-SyncManagerPriv::SyncManagerPriv(ClientPriv* client)
+SyncManagerPriv::SyncManagerPriv(ClientPriv *client)
     : download_thread_()
     , upload_thread_()
     , client_(client) {
@@ -36,27 +36,17 @@
     upload_thread_.stop();
 }
 
-DownloadTask::Ptr SyncManagerPriv::add_download_task(const string& content_id) {
-    auto item_p = client_->create_download_link(content_id);
-    cout << "push download link url in queue : " + item_p->task_url() << endl;
-    download_thread_.add_task(item_p);
-
-    auto item = std::shared_ptr<DownloadTask>(new DownloadTask(item_p));
-    download_queue_.push(item);
-    return item;
-}
-
-DownloadTask::Ptr SyncManagerPriv::add_download_task(const DownloadBufferCb& buffer_cb) {
-    auto item_p = client_->create_download_link(buffer_cb);
-    cout << "push download link url in queue : " + item_p->task_url() << endl;
-    download_thread_.add_task(item_p);
-
-    auto item = std::shared_ptr<DownloadTask>(new DownloadTask(item_p));
-    download_queue_.push(item);
-    return item;
-}
-
-UploadTask::Ptr SyncManagerPriv::add_upload_task(const UploadRequest& request_item) {
+DownloadTask::Ptr SyncManagerPriv::add_download_task(const DownloadRequest &request_item) {
+    auto item_p = client_->create_download_link(request_item);
+    cout << "push download link url in queue : " + item_p->task_url() << endl;
+    download_thread_.add_task(item_p);
+
+    auto item = std::shared_ptr<DownloadTask>(new DownloadTask(item_p));
+    download_queue_.push(item);
+    return item;
+}
+
+UploadTask::Ptr SyncManagerPriv::add_upload_task(const UploadRequest &request_item) {
     auto item_p = client_->create_upload_link(request_item);
     cout << "push upload link url in queue : " + item_p->task_url() << endl;
     upload_thread_.add_task(item_p);
@@ -66,7 +56,7 @@
     return item;
 }
 
-UploadTask::Ptr SyncManagerPriv::add_upload_task(const UploadBufferCb& buffer_cb) {
+UploadTask::Ptr SyncManagerPriv::add_upload_task(const UploadBufferCb &buffer_cb) {
     auto item_p = client_->create_upload_link(buffer_cb);
     cout << "push upload link url in queue : " + item_p->task_url() << endl;
     upload_thread_.add_task(item_p);

=== modified file 'src/mcloud/api/syncmanager_priv.h'
--- src/mcloud/api/syncmanager_priv.h	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/syncmanager_priv.h	2016-12-07 12:44:11 +0000
@@ -33,17 +33,15 @@
 
 class SyncManagerPriv {
   public:
-    SyncManagerPriv(ClientPriv* client);
+    SyncManagerPriv(ClientPriv *client);
 
     ~SyncManagerPriv();
 
-    DownloadTask::Ptr add_download_task(const std::string& content_id);
-
-    DownloadTask::Ptr add_download_task(const DownloadBufferCb& buffer_cb);
-
-    UploadTask::Ptr add_upload_task(const UploadRequest& request_item);
-
-    UploadTask::Ptr add_upload_task(const UploadBufferCb& buffer_cb);
+    DownloadTask::Ptr add_download_task(const DownloadRequest &request_item);
+
+    UploadTask::Ptr add_upload_task(const UploadRequest &request_item);
+
+    UploadTask::Ptr add_upload_task(const UploadBufferCb &buffer_cb);
 
     TaskQueue<DownloadTask::Ptr>  download_queue();
 
@@ -62,7 +60,7 @@
     TaskQueue<DownloadTask::Ptr> download_queue_;
     TaskQueue<UploadTask::Ptr>   upload_queue_;
 
-    ClientPriv*     client_;
+    ClientPriv     *client_;
 };
 
 }

=== modified file 'src/mcloud/api/syncthread.cpp'
--- src/mcloud/api/syncthread.cpp	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/syncthread.cpp	2016-12-07 12:44:11 +0000
@@ -16,13 +16,12 @@
  * Authored by: Gary Wang <[e-mail]>
  */
 
-#include <boost/algorithm/string.hpp>
 #include <core/net/http/streaming_client.h>
 #include <core/net/http/streaming_request.h>
 #include <core/net/http/response.h>
 #include <core/net/http/status.h>
 
-#include <fstream>
+#include <algorithm>
 #include <future>
 #include <iostream>
 
@@ -43,7 +42,7 @@
     HttpStreamClient(int request_timeout) :
         request_timeout_(request_timeout),
         client_(http::make_streaming_client()),
-        worker_ {[this](){ client_->run();}} {
+        worker_ {[this]() { client_->run(); }} {
     }
 
     ~HttpStreamClient() {
@@ -54,13 +53,13 @@
     }
 
     void async_get(shared_ptr<T> ptr,
-                   const http::Header& headers) {
+                   const http::Header &headers) {
         auto prom = make_shared<promise<bool>>();
 
         auto task_handler = ptr->task_handler();
         http::Request::Handler handler;
         handler.on_progress([task_handler](const http::Request::Progress & progress) {
-            if (task_handler->status() == Task::Status::Canceled) {
+            if (task_handler->status() == Task::Status::Cancelled) {
                 return http::Request::Progress::Next::abort_operation;
             }
 
@@ -96,15 +95,15 @@
     }
 
     void async_post(shared_ptr<T> ptr,
-                    const http::Header& headers,
-                    std::istream& payload,
+                    const http::Header &headers,
+                    std::istream &payload,
                     std::size_t size) {
         auto prom = make_shared<promise<bool>>();
 
         auto task_handler = ptr->task_handler();
         http::Request::Handler handler;
         handler.on_progress([task_handler](const http::Request::Progress & progress) {
-            if (task_handler->status() == Task::Status::Canceled) {
+            if (task_handler->status() == Task::Status::Cancelled) {
                 return http::Request::Progress::Next::abort_operation;
             }
 
@@ -140,15 +139,15 @@
     }
 
     void async_post(shared_ptr<T> ptr,
-                    const http::Header& headers,
-                    std::function<size_t(void* dest, size_t buf_size)> read_cb,
+                    const http::Header &headers,
+                    std::function<size_t(void *dest, size_t buf_size)> read_cb,
                     std::size_t size) {
         auto prom = make_shared<promise<bool>>();
 
         auto task_handler = ptr->task_handler();
         http::Request::Handler handler;
         handler.on_progress([task_handler](const http::Request::Progress & progress) {
-            if (task_handler->status() == Task::Status::Canceled) {
+            if (task_handler->status() == Task::Status::Cancelled) {
                 return http::Request::Progress::Next::abort_operation;
             }
 
@@ -214,7 +213,7 @@
         thread_ = std::thread(&SyncThread::run, this);
     } else {
         //if it's running, then resume
-        for (auto& item_ptr : task_queue_) {
+        for (auto &item_ptr : task_queue_) {
             if (item_ptr->status() == Task::Status::Paused) {
                 item_ptr->task_handler()->resume();
             }
@@ -232,7 +231,7 @@
     std::unique_lock<std::mutex> lock(mutex_);
 
     //pause task if it's running
-    for (auto& item_ptr : task_queue_) {
+    for (auto &item_ptr : task_queue_) {
         if (item_ptr->status() == Task::Status::Running) {
             item_ptr->task_handler()->pause();
         }
@@ -244,7 +243,7 @@
 template <typename T>
 void SyncThread<T>::stop() {
     //cancel task if it's running or prepared in the queue.
-    for (auto& item_ptr : task_queue_) {
+    for (auto &item_ptr : task_queue_) {
         if (item_ptr->status() == Task::Status::Running
                 || item_ptr->status() == Task::Status::Paused
                 || item_ptr->status() == Task::Status::Unstart) {
@@ -321,11 +320,11 @@
                         task_handler->detach_request();
                         task_ptr.reset();
                     }
-                } catch (std::runtime_error& e) {
+                } catch (std::runtime_error &e) {
                     // if error is caused by net issue,not manually(application callback)
                     // increase broken counter and try it again. Once broken counter exceeds broken limit,
                     // it's regarded as the "broken" one and drop it
-                    if (task_handler->status() != Task::Status::Canceled) {
+                    if (task_handler->status() != Task::Status::Cancelled) {
                         if (!task_handler->is_broken()) {
                             task_handler->add_broken_counter();
                             task_handler->set_status(Task::Status::Unstart);
@@ -372,7 +371,7 @@
 
                 task_ptr = (*it);
                 http::Header headers;
-                task_ptr->task_handler()->on_prepare()((void*)&headers);
+                task_ptr->task_handler()->on_prepare()((void *)&headers);
                 if (task_ptr->buffer_callback()) {
                     client_->async_post(task_ptr, headers, task_ptr->buffer_callback(), task_ptr->file_size());
                 } else {
@@ -392,13 +391,13 @@
                         task_handler->detach_request();
                         task_ptr.reset();
                     }
-                } catch (std::runtime_error& e) {
+                } catch (std::runtime_error &e) {
                     //if content data is fetched chunk by chunk(buffering), set it broken once failed
                     //as we didn't cache buffer locally.
                     if (task_ptr->buffer_callback()) {
                         task_ptr->set_error_string(e.what());
                         task_handler->set_status(Task::Status::Broken);
-                    } else if (task_handler->status() != Task::Status::Canceled) {
+                    } else if (task_handler->status() != Task::Status::Cancelled) {
                         // if content data is local file, when error is caused by net issue,
                         //increase broken counter and try it again. Once broken counter exceeds broken limit,
                         //it's regarded as the "broken" one and we drop it.

=== modified file 'src/mcloud/api/taskhandler.h'
--- src/mcloud/api/taskhandler.h	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/taskhandler.h	2016-12-07 12:44:11 +0000
@@ -38,11 +38,11 @@
 
 struct TaskHandler {
 
-    typedef std::function<void(void*)> PrepareHandler;
+    typedef std::function<void(void *)> PrepareHandler;
 
     typedef std::function<void(float)> ProgressHandler;
 
-    typedef std::function<void(const std::string&)> ReadyReadHandler;
+    typedef std::function<void(const std::string &)> ReadyReadHandler;
 
     typedef std::function<bool(void)> FinishedHandler;
 
@@ -64,11 +64,11 @@
     }
 
     /*!
-     * \brief Cancel a Task and set status as Canceled.
+     * \brief Cancel a Task and set status as Cancelled.
      * \sa status()
      */
     void cancel() {
-        set_status(Task::Status::Canceled);
+        set_status(Task::Status::Cancelled);
         detach_request();
     }
 
@@ -143,8 +143,8 @@
      * \brief attach network request \a request and \a future from internal http client
      * \sa detach_request()
      */
-    void attach_request(const std::shared_ptr<core::net::http::StreamingRequest>& request,
-                        const std::shared_future<bool>& future) {
+    void attach_request(const std::shared_ptr<core::net::http::StreamingRequest> &request,
+                        const std::shared_future<bool> &future) {
         task_request = std::make_shared<TaskRequest>(request, future);
     }
 
@@ -186,29 +186,29 @@
         return false;
     }
 
-    TaskHandler::PrepareHandler& on_prepare() {
+    TaskHandler::PrepareHandler &on_prepare() {
         return prepare_handler;
     }
 
-    TaskHandler::ProgressHandler& on_progress() {
+    TaskHandler::ProgressHandler &on_progress() {
         return progress_handler;
     }
 
-    TaskHandler::FinishedHandler& on_finished() {
+    TaskHandler::FinishedHandler &on_finished() {
         return finished_handler;
     }
 
-    TaskHandler::ReadyReadHandler& on_ready_read() {
+    TaskHandler::ReadyReadHandler &on_ready_read() {
         return ready_read_handler;
     }
 
-    TaskHandler::StatusHandler& on_status() {
+    TaskHandler::StatusHandler &on_status() {
         return status_handler;
     }
 
   protected:
-    TaskHandler(const TaskHandler&) = delete;
-    TaskHandler(TaskHandler&&) = delete;
+    TaskHandler(const TaskHandler &) = delete;
+    TaskHandler(TaskHandler &&) = delete;
 
   private:
     struct BrokenCounter : std::atomic<int>  {
@@ -225,8 +225,8 @@
     };
 
     struct TaskRequest {
-        TaskRequest(const std::shared_ptr<core::net::http::StreamingRequest>& request,
-                    const std::shared_future<bool>& future) :
+        TaskRequest(const std::shared_ptr<core::net::http::StreamingRequest> &request,
+                    const std::shared_future<bool> &future) :
             request_(request),
             future_(future) {
         }

=== modified file 'src/mcloud/api/uploadtask.cpp'
--- src/mcloud/api/uploadtask.cpp	2016-10-26 08:50:32 +0000
+++ src/mcloud/api/uploadtask.cpp	2016-12-07 12:44:11 +0000
@@ -24,33 +24,33 @@
 using namespace mcloud::api;
 using namespace std;
 
-UploadTask::UploadTask(const std::shared_ptr<UploadTaskPriv>& p)
+UploadTask::UploadTask(const std::shared_ptr<UploadTaskPriv> &p)
     : p_(p) {
 
 }
 
-const string& UploadTask::task_id() const {
+const string &UploadTask::task_id() const {
     return p_->task_id();
 }
 
-const string& UploadTask::content_id() const {
+const string &UploadTask::content_id() const {
     return p_->content_id();
 }
 
-const string& UploadTask::content_name() const {
+const string &UploadTask::content_name() const {
     return p_->content_name();
 }
 
-const string& UploadTask::file_path() const {
+const string &UploadTask::file_path() const {
     return p_->file_path();
 }
 
-const string& UploadTask::task_url() const {
+const string &UploadTask::task_url() const {
     return p_->task_url();
 }
 
 Task::Status UploadTask::status() const {
-    return p_->task_handler()->status();
+    return p_->status();
 }
 
 size_t UploadTask::file_size() const {
@@ -61,18 +61,18 @@
     return p_->is_need_upload();
 }
 
-Task::ProgressHandler& UploadTask::progress_changed() {
+Task::ProgressHandler &UploadTask::progress_changed() {
     return p_->progress_changed();
 }
 
-Task::StatusHandler& UploadTask::status_changed() {
+Task::StatusHandler &UploadTask::status_changed() {
     return p_->status_changed();
 }
 
-const string& UploadTask::error_string() const {
+const string &UploadTask::error_string() const {
     return p_->error_string();
 }
 
 void UploadTask::cancel() {
-    p_->task_handler()->cancel();
+    p_->cancel();
 }

=== modified file 'src/mcloud/api/uploadtask_priv.cpp'
--- src/mcloud/api/uploadtask_priv.cpp	2016-10-24 15:25:02 +0000
+++ src/mcloud/api/uploadtask_priv.cpp	2016-12-07 12:44:11 +0000
@@ -30,10 +30,10 @@
 using namespace mcloud::api;
 using namespace std;
 
-UploadTaskPriv::UploadTaskPriv(const tinyxml2::XMLElement* root,
-                               const string& task_id,
-                               const string& redirection_url,
-                               const string& file_path)
+UploadTaskPriv::UploadTaskPriv(const tinyxml2::XMLElement *root,
+                               const string &task_id,
+                               const string &redirection_url,
+                               const string &file_path)
     : file_path_(file_path),
       file_size_(fs::file_size(file_path_)),
       upload_task_id_(task_id),
@@ -44,9 +44,9 @@
     fillRequest(root);
 }
 
-UploadTaskPriv::UploadTaskPriv(const tinyxml2::XMLElement* root,
-                               const string& task_id,
-                               const string& redirection_url,
+UploadTaskPriv::UploadTaskPriv(const tinyxml2::XMLElement *root,
+                               const string &task_id,
+                               const string &redirection_url,
                                size_t buffer_size,
                                Task::Buffer_Callback buffer_callback)
     : file_size_(buffer_size),
@@ -59,7 +59,7 @@
     fillRequest(root);
 }
 
-void UploadTaskPriv::fillRequest(const tinyxml2::XMLElement* root) {
+void UploadTaskPriv::fillRequest(const tinyxml2::XMLElement *root) {
     content_id_ = root->FirstChildElement("contentID")->GetText();
     content_name_ = root->FirstChildElement("contentName")->GetText();
     is_need_upload_ = !strcmp(root->FirstChildElement("isNeedUpload")->GetText(), "1");
@@ -73,48 +73,51 @@
         task_handler_->set_status(Task::Status::Complete);
     }
 
-    task_handler_->on_prepare() = [this](void* params) {
+    task_handler_->on_prepare() = [this](void *params) {
         //change status
         task_handler_->set_status(Task::Status::Running);
 
         //populate header info
-        http::Header* header = reinterpret_cast<http::Header*>(params);
+        http::Header *header = reinterpret_cast<http::Header *>(params);
 
-        string content_type;
-        string suffix = fs::path(file_path_).extension().string();
-        if (suffix == "gif" || suffix == "jpg" || suffix == "jpeg" || suffix == "png") {
-            content_type = "image/" + suffix + "; name=" + content_name_;
-        } else if (suffix == "avi" || suffix == "mp4" || suffix == "mkv") {
-            content_type = "video/" + suffix + "; name=" + content_name_;
-        } else if (suffix == "wav" || suffix == "ogg") {
-            content_type = "audio/" + suffix + "; name=" + content_name_;
-        } else if (suffix == "mp3") {
-            content_type = "audio/mpeg; name=" + content_name_;
-        } else if (suffix == "ppt") {
-            content_type = "application/vnd.ms-powerpoint; name=" + content_name_;
-        } else if (suffix == "pptx") {
-            content_type = "application/vnd.openxmlformats-officedocument.presentationml.presentation; name=" + content_name_;
-        } else if (suffix == "doc") {
-            content_type = "application/msword; name=" + content_name_;
-        } else if (suffix == "docx") {
-            content_type =
-                "application/vnd.openxmlformats-officedocument.wordprocessingml.document; name=" + content_name_;
-        } else if (suffix == "xls") {
-            content_type = "application/vnd.ms-excel; name=" + content_name_;
-        } else if (suffix == "xlsx") {
-            content_type = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet; name="
-                           + content_name_;
-        } else if (suffix == "odt") {
-            content_type = "application/vnd.oasis.opendocument.text; name=" + content_name_;
-        } else if (suffix == "ods") {
-            content_type = "application/vnd.oasis.opendocument.spreadsheet; name=" + content_name_;
-        } else if (suffix == "odp") {
-            content_type = "application/vnd.oasis.opendocument.presentation; name=" + content_name_;
-        } else if (suffix == "txt") {
-            content_type = "text/plain; name=" + content_name_;
-        } else {
-            content_type = "application/octet-stream; name=" + content_name_;
-        }
+        const string content_type = [this]() {
+            string type; 
+            string suffix = fs::path(file_path_).extension().string();
+            if (suffix == "gif" || suffix == "jpg" || suffix == "jpeg" || suffix == "png") {
+                type = "image/" + suffix + "; name=" + content_name_;
+            } else if (suffix == "avi" || suffix == "mp4" || suffix == "mkv") {
+                type = "video/" + suffix + "; name=" + content_name_;
+            } else if (suffix == "wav" || suffix == "ogg") {
+                type = "audio/" + suffix + "; name=" + content_name_;
+            } else if (suffix == "mp3") {
+                type = "audio/mpeg; name=" + content_name_;
+            } else if (suffix == "ppt") {
+                type = "application/vnd.ms-powerpoint; name=" + content_name_;
+            } else if (suffix == "pptx") {
+                type = "application/vnd.openxmlformats-officedocument.presentationml.presentation; name=" + content_name_;
+            } else if (suffix == "doc") {
+                type = "application/msword; name=" + content_name_;
+            } else if (suffix == "docx") {
+                type = "application/vnd.openxmlformats-officedocument.wordprocessingml.document; name=" + content_name_;
+            } else if (suffix == "xls") {
+                type = "application/vnd.ms-excel; name=" + content_name_;
+            } else if (suffix == "xlsx") {
+                type = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet; name="
+                    + content_name_;
+            } else if (suffix == "odt") {
+                type = "application/vnd.oasis.opendocument.text; name=" + content_name_;
+            } else if (suffix == "ods") {
+                type = "application/vnd.oasis.opendocument.spreadsheet; name=" + content_name_;
+            } else if (suffix == "odp") {
+                type = "application/vnd.oasis.opendocument.presentation; name=" + content_name_;
+            } else if (suffix == "txt") {
+                type = "text/plain; name=" + content_name_;
+            } else {
+                type = "application/octet-stream; name=" + content_name_;
+            }
+            
+            return type;
+        }();
         header->add("Content-Type", content_type);
 
         //mcloud proprioty header spec
@@ -163,7 +166,7 @@
     task_handler_->on_ready_read() = [this](const string & data) {
         tinyxml2::XMLDocument doc;
         tinyxml2::XMLError error = doc.Parse(data.c_str());
-        const tinyxml2::XMLElement* result = doc.FirstChildElement();
+        const tinyxml2::XMLElement *result = doc.FirstChildElement();
 
         if (error != tinyxml2::XML_SUCCESS && !strcmp(result->Attribute("resultCode"), "0")) {
             cerr << "upload content interrupted " << endl;
@@ -171,23 +174,23 @@
     };
 }
 
-const string& UploadTaskPriv::task_id() const {
+const string &UploadTaskPriv::task_id() const {
     return upload_task_id_;
 }
 
-const string& UploadTaskPriv::content_id() const {
+const string &UploadTaskPriv::content_id() const {
     return content_id_;
 }
 
-const string& UploadTaskPriv::content_name() const {
+const string &UploadTaskPriv::content_name() const {
     return content_name_;
 }
 
-const string& UploadTaskPriv::file_path() const {
+const string &UploadTaskPriv::file_path() const {
     return file_path_;
 }
 
-const string& UploadTaskPriv::task_url() const {
+const string &UploadTaskPriv::task_url() const {
     return task_url_;
 }
 
@@ -203,27 +206,27 @@
     return is_need_upload_;
 }
 
-std::ifstream& UploadTaskPriv::ifstream() {
+std::ifstream &UploadTaskPriv::ifstream() {
     return ifs_;
 }
 
-const string& UploadTaskPriv::error_string() const {
+const string &UploadTaskPriv::error_string() const {
     return error_string_;
 }
 
-void UploadTaskPriv::set_error_string(const string& err) {
+void UploadTaskPriv::set_error_string(const string &err) {
     error_string_ = err;
 }
 
-Task::ProgressHandler& UploadTaskPriv::progress_changed() {
+Task::ProgressHandler &UploadTaskPriv::progress_changed() {
     return progress_handler_;
 }
 
-Task::StatusHandler& UploadTaskPriv::status_changed() {
+Task::StatusHandler &UploadTaskPriv::status_changed() {
     return status_handler_;
 }
 
-Task::Buffer_Callback& UploadTaskPriv::buffer_callback() {
+Task::Buffer_Callback &UploadTaskPriv::buffer_callback() {
     return buffer_callback_;
 }
 

=== modified file 'src/mcloud/api/uploadtask_priv.h'
--- src/mcloud/api/uploadtask_priv.h	2016-10-24 15:25:02 +0000
+++ src/mcloud/api/uploadtask_priv.h	2016-12-07 12:44:11 +0000
@@ -37,38 +37,38 @@
   public:
     typedef std::shared_ptr<UploadTaskPriv>  Ptr;
 
-    UploadTaskPriv(const tinyxml2::XMLElement* root,
-                   const std::string& task_id,
-                   const std::string& redirection_url,
-                   const std::string& file_path);
+    UploadTaskPriv(const tinyxml2::XMLElement *root,
+                   const std::string &task_id,
+                   const std::string &redirection_url,
+                   const std::string &file_path);
 
-    UploadTaskPriv(const tinyxml2::XMLElement* root,
-                   const std::string& task_id,
-                   const std::string& redirection_url,
+    UploadTaskPriv(const tinyxml2::XMLElement *root,
+                   const std::string &task_id,
+                   const std::string &redirection_url,
                    size_t buffer_size,
                    Task::Buffer_Callback buffer_callback);
 
-    const std::string& task_id() const;
-
-    const std::string& content_id() const;
-
-    const std::string& content_name() const;
-
-    const std::string& file_path() const;
-
-    const std::string& task_url() const;
+    const std::string &task_id() const;
+
+    const std::string &content_id() const;
+
+    const std::string &content_name() const;
+
+    const std::string &file_path() const;
+
+    const std::string &task_url() const;
 
     Task::Status status() const;
 
-    Task::ProgressHandler& progress_changed();
-
-    Task::StatusHandler& status_changed();
-
-    Task::Buffer_Callback& buffer_callback();
-
-    const std::string& error_string() const;
-
-    void set_error_string(const std::string& err);
+    Task::ProgressHandler &progress_changed();
+
+    Task::StatusHandler &status_changed();
+
+    Task::Buffer_Callback &buffer_callback();
+
+    const std::string &error_string() const;
+
+    void set_error_string(const std::string &err);
 
     void cancel();
 
@@ -78,10 +78,10 @@
 
     std::shared_ptr<TaskHandler> task_handler() const;
 
-    std::ifstream& ifstream();
+    std::ifstream &ifstream();
 
   protected:
-    void fillRequest(const tinyxml2::XMLElement* root);
+    void fillRequest(const tinyxml2::XMLElement *root);
 
   private:
     std::string file_path_;

=== added file 'tests/server/resources/1011YfnDD09x03920151110171910rox.xml'
--- tests/server/resources/1011YfnDD09x03920151110171910rox.xml	1970-01-01 00:00:00 +0000
+++ tests/server/resources/1011YfnDD09x03920151110171910rox.xml	2016-12-07 12:44:11 +0000
@@ -0,0 +1,1 @@
+<?xml version="1.0" encoding="UTF-8"?><result resultCode="9102" desc="[212|saes_CYCommon|673F558E07604214B59ACF5579CB4514]Failed to invoke the service.catalogID/contentID[1011YfnDD09x03920151110171910rox] invalid[NDA(100071)][Flag:673F558E07604214B59ACF5579CB4514]"></result>

=== added file 'tests/server/resources/1811asktx23a00019700101000000001.backup.xml'
--- tests/server/resources/1811asktx23a00019700101000000001.backup.xml	1970-01-01 00:00:00 +0000
+++ tests/server/resources/1811asktx23a00019700101000000001.backup.xml	2016-12-07 12:44:11 +0000
@@ -0,0 +1,1 @@
+<?xml version="1.0" encoding="UTF-8"?><result resultCode="0"><getDiskResult><parentCatalogID>root</parentCatalogID><nodeCount>118</nodeCount><catalogList length="10"><catalogInfo><catalogName>手机图片</catalogName><catalogID>1811asktx23a00019700101000000043</catalogID><catalogType>7</catalogType><isShared>false</isShared><createTime>20160420134258</createTime><updateTime>20160420134258</updateTime><catalogLevel>2</catalogLevel><shareDoneeCount>0</shareDoneeCount><ETagOprType>1</ETagOprType><openType>0</openType><dirEtag>4194304</dirEtag><tombstoned>0</tombstoned><moved>0</moved><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><isFixedDir>1</isFixedDir><path>00019700101000000001/1811asktx23a00019700101000000043</path><owner>13718269220</owner><shareType>0</shareType></catalogInfo><catalogInfo><catalogName>手机视频</catalogName><catalogID>1811asktx23a00019700101000000044</catalogID><catalogType>7</catalogType><isShared>false</isShared><createTime>20160420134258</createTime><updateTime>20160420134258</updateTime><catalogLevel>2</catalogLevel><shareDoneeCount>0</shareDoneeCount><ETagOprType>1</ETagOprType><openType>0</openType><dirEtag>4194304</dirEtag><tombstoned>0</tombstoned><moved>0</moved><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><isFixedDir>1</isFixedDir><path>00019700101000000001/1811asktx23a00019700101000000044</path><owner>13718269220</owner><shareType>0</shareType></catalogInfo><catalogInfo><catalogName>sprint_test (1)</catalogName><catalogID>1811asktx23a054201608290159358tx</catalogID><catalogType>0</catalogType><isShared>false</isShared><createTime>20160829015935</createTime><updateTime>20160829015945</updateTime><catalogLevel>2</catalogLevel><shareDoneeCount>0</shareDoneeCount><ETagOprType>1</ETagOprType><openType>0</openType><dirEtag>4194304</dirEtag><tombstoned>0</tombstoned><moved>0</moved><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><isFixedDir>0</isFixedDir><path>00019700101000000001/1811asktx23a054201608290159358tx</path><owner>13718269220</owner><modifier>13718269220</modifier><shareType>0</shareType></catalogInfo><catalogInfo><catalogName>sprint_test</catalogName><catalogID>1811asktx23a05720160824160623khm</catalogID><catalogType>0</catalogType><isShared>false</isShared><createTime>20160824160623</createTime><updateTime>20160824160623</updateTime><catalogLevel>2</catalogLevel><shareDoneeCount>0</shareDoneeCount><ETagOprType>1</ETagOprType><openType>0</openType><dirEtag>4194304</dirEtag><tombstoned>0</tombstoned><moved>0</moved><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><isFixedDir>0</isFixedDir><path>00019700101000000001/1811asktx23a05720160824160623khm</path><owner>13718269220</owner><modifier>13718269220</modifier><shareType>0</shareType></catalogInfo><catalogInfo><catalogName>since_update</catalogName><catalogID>1811asktx23a057201608101011344kx</catalogID><catalogType>0</catalogType><isShared>false</isShared><createTime>20160810101134</createTime><updateTime>20160810101458</updateTime><catalogLevel>2</catalogLevel><shareDoneeCount>0</shareDoneeCount><ETagOprType>1</ETagOprType><openType>0</openType><dirEtag>4194304</dirEtag><tombstoned>0</tombstoned><moved>0</moved><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><isFixedDir>0</isFixedDir><path>00019700101000000001/1811asktx23a057201608101011344kx</path><owner>13718269220</owner><modifier>13718269220</modifier><shareType>0</shareType></catalogInfo><catalogInfo><catalogName>Let it be</catalogName><catalogID>1811asktx23a05420160525143841ng2</catalogID><catalogType>0</catalogType><isShared>false</isShared><createTime>20160525143841</createTime><updateTime>20160721151538</updateTime><catalogLevel>2</catalogLevel><shareDoneeCount>0</shareDoneeCount><ETagOprType>0</ETagOprType><openType>0</openType><dirEtag>4194304</dirEtag><tombstoned>0</tombstoned><moved>0</moved><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><isFixedDir>0</isFixedDir><path>00019700101000000001/1811asktx23a05420160525143841ng2</path><owner>13718269220</owner><modifier>13718269220</modifier><shareType>0</shareType></catalogInfo><catalogInfo><catalogName>Test</catalogName><catalogID>1811asktx23a057201607181609041x9</catalogID><catalogType>0</catalogType><isShared>false</isShared><createTime>20160718160904</createTime><updateTime>20160719115431</updateTime><catalogLevel>2</catalogLevel><shareDoneeCount>0</shareDoneeCount><ETagOprType>1</ETagOprType><openType>0</openType><dirEtag>4194304</dirEtag><tombstoned>0</tombstoned><moved>0</moved><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><isFixedDir>0</isFixedDir><path>00019700101000000001/1811asktx23a057201607181609041x9</path><owner>13718269220</owner><modifier>13718269220</modifier><shareType>0</shareType></catalogInfo><catalogInfo><catalogName>Hahah</catalogName><catalogID>1811asktx23a05420160704141550940</catalogID><catalogType>0</catalogType><isShared>false</isShared><createTime>20160704141550</createTime><updateTime>20160704141550</updateTime><catalogLevel>2</catalogLevel><shareDoneeCount>0</shareDoneeCount><ETagOprType>1</ETagOprType><openType>0</openType><dirEtag>4194304</dirEtag><tombstoned>0</tombstoned><moved>0</moved><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><isFixedDir>0</isFixedDir><path>00019700101000000001/1811asktx23a05420160704141550940</path><owner>13718269220</owner><modifier>13718269220</modifier><shareType>0</shareType></catalogInfo><catalogInfo><catalogName>Just 4 fun (1) 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ct=1&amp;type=2&amp;code=20142D18AC1472474AEFF9FCA7F731E29A6CA2899AE51D9DE850F358C8F64FFE&amp;exp=34111&amp;account=MTM3MTgyNjkyMjA=&amp;p=0&amp;ui=1811asktx23a&amp;ci=1811asktx23a05420160607110312eaz&amp;cn=image20160607_110310...&amp;oprChannel=APP1ZtqoN3R0002&amp;dom=D919</presentURL><presentLURL></presentLURL><presentHURL></presentHURL><shareDoneeCount>0</shareDoneeCount><safestate>1</safestate><transferstate>0</transferstate><isFocusContent>0</isFocusContent><uploadTime>20160607110312</uploadTime><ETagOprType>0</ETagOprType><openType>0</openType><auditResult>0</auditResult><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><channel>APP1ZtqoN3R0002</channel><digest>7E49D35AEF93E930D793D7F383D989F8</digest><geoLocFlag>0</geoLocFlag><version></version><fileEtag>851416114326265871</fileEtag><encryptFlag>0</encryptFlag><fileVersion>851415996806060983</fileVersion><tombstoned>0</tombstoned><proxyID></proxyID><moved>0</moved><owner>13718269220</owner><modifier>13718269220</modifier><shareType>0</shareType><exif><createTime></createTime></exif></contentInfo><contentInfo><contentID>1811asktx23a058201606071031288jk</contentID><contentName>image20160607_103127278.jpg</contentName><contentSuffix>jpg</contentSuffix><contentSize>1803585</contentSize><contentDesc></contentDesc><isShared>false</isShared><contentType>1</contentType><contentOrigin>1</contentOrigin><updateTime>20160607103144</updateTime><commentCount>0</commentCount><thumbnailURL>https://download.caiyun.feixin.10086.cn:443/storageWeb/servlet/GetFileByURLServlet?root=/mnt/wfs22&amp;fileid=BN6d712b13ddedde0a810fa940f7fb6d59.jpg&amp;ct=1&amp;type=0&amp;code=8D7C693F7CEE09547706415C5343D5243B1079D5E5CEB837B5C2E3236307B7AE&amp;exp=34111&amp;account=MTM3MTgyNjkyMjA=&amp;p=0&amp;ui=1811asktx23a&amp;ci=1811asktx23a058201606071031288jk&amp;cn=image20160607_103127...&amp;oprChannel=APP1ZtqoN3R0002&amp;dom=D981</thumbnailURL><bigthumbnailURL>https://download.caiyun.feixin.10086.cn:443/storageWeb/servlet/GetFileByURLServlet?root=/mnt/wfs22&amp;fileid=BN6d712b13ddedde0a810fa940f7fb6d59.jpg&amp;ct=1&amp;type=1&amp;code=8D7C693F7CEE09547706415C5343D5243B1079D5E5CEB837B5C2E3236307B7AE&amp;exp=34111&amp;account=MTM3MTgyNjkyMjA=&amp;p=0&amp;ui=1811asktx23a&amp;ci=1811asktx23a058201606071031288jk&amp;cn=image20160607_103127...&amp;oprChannel=APP1ZtqoN3R0002&amp;dom=D981</bigthumbnailURL><midthumbnailURL></midthumbnailURL><presentURL>https://download1.caiyun.feixin.10086.cn:443/storageWeb/servlet/GetFileByURLServlet?root=/mnt/wfs22&amp;fileid=BN6d712b13ddedde0a810fa940f7fb6d59.jpg&amp;ct=1&amp;type=2&amp;code=8D7C693F7CEE09547706415C5343D5243B1079D5E5CEB837B5C2E3236307B7AE&amp;exp=34111&amp;account=MTM3MTgyNjkyMjA=&amp;p=0&amp;ui=1811asktx23a&amp;ci=1811asktx23a058201606071031288jk&amp;cn=image20160607_103127...&amp;oprChannel=APP1ZtqoN3R0002&amp;dom=D981</presentURL><presentLURL></presentLURL><presentHURL></presentHURL><shareDoneeCount>0</shareDoneeCount><safestate>1</safestate><transferstate>0</transferstate><isFocusContent>0</isFocusContent><uploadTime>20160607103128</uploadTime><ETagOprType>0</ETagOprType><openType>0</openType><auditResult>0</auditResult><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><channel>APP1ZtqoN3R0002</channel><digest>993ACF206B8C7439B60F0AA4D4484227</digest><geoLocFlag>0</geoLocFlag><version></version><fileEtag>851408079415533353</fileEtag><encryptFlag>0</encryptFlag><fileVersion>851408011140655376</fileVersion><tombstoned>0</tombstoned><proxyID></proxyID><moved>0</moved><owner>13718269220</owner><modifier>13718269220</modifier><shareType>0</shareType><exif><createTime></createTime></exif></contentInfo></contentList><isCompleted>0</isCompleted></getDiskResult></result>

=== added file 'tests/server/resources/1811asktx23a00019700101000000001.single.xml'
--- tests/server/resources/1811asktx23a00019700101000000001.single.xml	1970-01-01 00:00:00 +0000
+++ tests/server/resources/1811asktx23a00019700101000000001.single.xml	2016-12-07 12:44:11 +0000
@@ -0,0 +1,1 @@
+<?xml version="1.0" encoding="UTF-8"?><result resultCode="0"><getDiskResult><parentCatalogID>root</parentCatalogID><nodeCount>118</nodeCount><catalogList length="1"><catalogInfo><catalogName>手机图片</catalogName><catalogID>1811asktx23a00019700101000000043</catalogID><catalogType>7</catalogType><isShared>false</isShared><createTime>20160420134258</createTime><updateTime>20160420134258</updateTime><catalogLevel>2</catalogLevel><shareDoneeCount>0</shareDoneeCount><ETagOprType>1</ETagOprType><openType>0</openType><dirEtag>4194304</dirEtag><tombstoned>0</tombstoned><moved>0</moved><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><isFixedDir>1</isFixedDir><path>00019700101000000001/1811asktx23a00019700101000000043</path><owner>13718269220</owner><shareType>0</shareType></catalogInfo></catalogList><isCompleted>0</isCompleted></getDiskResult></result>

=== modified file 'tests/server/resources/1811asktx23a00019700101000000001_index_101.xml'
--- tests/server/resources/1811asktx23a00019700101000000001_index_101.xml	2016-09-13 06:55:27 +0000
+++ tests/server/resources/1811asktx23a00019700101000000001_index_101.xml	2016-12-07 12:44:11 +0000
@@ -2,7 +2,99 @@
 <getDiskResult>
 <parentCatalogID>root</parentCatalogID>
 <nodeCount>118</nodeCount>
-<contentList length="0"></contentList>
+<contentList length="0">
+<contentInfo>
+<contentID>1811asktx23a05420160607110312egd</contentID>
+<contentName>image20160607_110310931.jpg</contentName>
+<contentSuffix>jpg</contentSuffix>
+<contentSize>2254401</contentSize>
+<contentDesc/>
+<isShared>false</isShared>
+<contentType>1</contentType>
+<contentOrigin>1</contentOrigin>
+<updateTime>20160607110340</updateTime>
+<commentCount>0</commentCount>
+<thumbnailURL></thumbnailURL>
+<bigthumbnailURL>
+</bigthumbnailURL>
+<midthumbnailURL/>
+<presentURL>
+</presentURL>
+<presentLURL/>
+<presentHURL/>
+<shareDoneeCount>0</shareDoneeCount>
+<safestate>1</safestate>
+<transferstate>0</transferstate>
+<isFocusContent>0</isFocusContent>
+<uploadTime>20160607110312</uploadTime>
+<ETagOprType>0</ETagOprType>
+<openType>0</openType>
+<auditResult>0</auditResult>
+<parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId>
+<channel>APP1ZtqoN3R0002</channel>
+<digest>7E49D35AEF93E930D793D7F383D989F8</digest>
+<geoLocFlag>0</geoLocFlag>
+<version/>
+<fileEtag>851416114326265871</fileEtag>
+<encryptFlag>0</encryptFlag>
+<fileVersion>851415996806060983</fileVersion>
+<tombstoned>0</tombstoned>
+<proxyID/>
+<moved>0</moved>
+<owner>13718269220</owner>
+<modifier>13718269220</modifier>
+<shareType>0</shareType>
+<exif>
+<createTime/>
+</exif>
+</contentInfo>
+<contentInfo>
+<contentID>1811asktx23a0582016060710312834k</contentID>
+<contentName>image20160607_103127278.jpg</contentName>
+<contentSuffix>jpg</contentSuffix>
+<contentSize>1803585</contentSize>
+<contentDesc/>
+<isShared>false</isShared>
+<contentType>1</contentType>
+<contentOrigin>1</contentOrigin>
+<updateTime>20160607103144</updateTime>
+<commentCount>0</commentCount>
+<thumbnailURL>
+</thumbnailURL>
+<bigthumbnailURL>
+</bigthumbnailURL>
+<midthumbnailURL/>
+<presentURL>
+</presentURL>
+<presentLURL/>
+<presentHURL/>
+<shareDoneeCount>0</shareDoneeCount>
+<safestate>1</safestate>
+<transferstate>0</transferstate>
+<isFocusContent>0</isFocusContent>
+<uploadTime>20160607103128</uploadTime>
+<ETagOprType>0</ETagOprType>
+<openType>0</openType>
+<auditResult>0</auditResult>
+<parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId>
+<channel>APP1ZtqoN3R0002</channel>
+<digest>993ACF206B8C7439B60F0AA4D4484227</digest>
+<geoLocFlag>0</geoLocFlag>
+<version/>
+<fileEtag>851408079415533353</fileEtag>
+<encryptFlag>0</encryptFlag>
+<fileVersion>851408011140655376</fileVersion>
+<tombstoned>0</tombstoned>
+<proxyID/>
+<moved>0</moved>
+<owner>13718269220</owner>
+<modifier>13718269220</modifier>
+<shareType>0</shareType>
+<exif>
+<createTime/>
+</exif>
+</contentInfo>
+</contentList>
 <isCompleted>0</isCompleted>
 </getDiskResult>
 </result>

=== added file 'tests/server/resources/1811asktx23a057201605161542175lg.xml'
--- tests/server/resources/1811asktx23a057201605161542175lg.xml	1970-01-01 00:00:00 +0000
+++ tests/server/resources/1811asktx23a057201605161542175lg.xml	2016-12-07 12:44:11 +0000
@@ -0,0 +1,1 @@
+<?xml version="1.0" encoding="UTF-8"?><result resultCode="9424" desc="[212|saes_CYCommon|673F558E07604214B59ACF5579CB4514] lacked sufficient storage space. [1811asktx23a057201605161542175lg] invalid[NDA(100071)][Flag:673F558E07604214B59ACF5579CB4514]"></result>

=== added file 'tests/server/resources/1811asktx23a058201609111803007pu.xml'
--- tests/server/resources/1811asktx23a058201609111803007pu.xml	1970-01-01 00:00:00 +0000
+++ tests/server/resources/1811asktx23a058201609111803007pu.xml	2016-12-07 12:44:11 +0000
@@ -0,0 +1,1 @@
+<?xml version="1.0" encoding="UTF-8"?><result resultCode="9102" desc="[212|saes_CYCommon|673F558E07604214B59ACF5579CB4514]Failed to invoke the service.catalogID/contentID[1811asktx23a058201609111803007pu] invalid[NDA(100071)][Flag:673F558E07604214B59ACF5579CB4514]"></result>

=== modified file 'tests/server/resources/content_1811asktx23a05520160718170034xh1.xml'
--- tests/server/resources/content_1811asktx23a05520160718170034xh1.xml	2016-09-13 06:55:27 +0000
+++ tests/server/resources/content_1811asktx23a05520160718170034xh1.xml	2016-12-07 12:44:11 +0000
@@ -1,1 +1,1 @@
-<?xml version="1.0" encoding="UTF-8"?><result resultCode="0"><contentInfo><contentID>1811asktx23a05520160718170034xh1</contentID><contentName>animal.png</contentName><contentSuffix>png</contentSuffix><contentSize>468839</contentSize><contentDesc/><isShared>false</isShared><contentType>1</contentType><contentOrigin>1</contentOrigin><updateTime>20160718170048</updateTime><commentCount>0</commentCount><thumbnailURL>https://download.caiyun.feixin.10086.cn:443/storageWeb/servlet/GetFileByURLServlet?1.png</thumbnailURL><bigthumbnailURL>https://download.caiyun.feixin.10086.cn:443/storageWeb/servlet/GetFileByURLServlet?1.png</bigthumbnailURL><midthumbnailURL/><presentURL>4</presentURL><presentLURL/><presentHURL/><shareDoneeCount>0</shareDoneeCount><safestate>0</safestate><transferstate>0</transferstate><isFocusContent>0</isFocusContent><uploadTime>20160718170034</uploadTime><ETagOprType>0</ETagOprType><openType>0</openType><auditResult>0</auditResult><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><channel>APP1ZtqoN3R0002</channel><digest>583B7EFBA3E766EF9B52E7C2929D9308</digest><geoLocFlag>0</geoLocFlag><version/><fileEtag>867062051081937884</fileEtag><encryptFlag>0</encryptFlag><fileVersion>866363835197808497</fileVersion><tombstoned>0</tombstoned><proxyID/><moved>0</moved><owner>13718269220</owner><modifier>13718269220</modifier><shareType>1</shareType><exif><createTime/></exif></contentInfo></result>
+<?xml version="1.0" encoding="UTF-8"?><result resultCode="0"><contentInfo><contentID>1811asktx23a05520160718170034xh1</contentID><contentName>animal.png</contentName><contentSuffix>png</contentSuffix><contentSize>468839</contentSize><contentDesc>Please don't remove it</contentDesc><isShared>false</isShared><contentType>1</contentType><contentOrigin>1</contentOrigin><updateTime>20160718170048</updateTime><commentCount>0</commentCount><thumbnailURL>https://download.caiyun.feixin.10086.cn:443/storageWeb/servlet/GetFileByURLServlet?1.png</thumbnailURL><bigthumbnailURL>https://download.caiyun.feixin.10086.cn:443/storageWeb/servlet/GetFileByURLServlet?1.png</bigthumbnailURL><midthumbnailURL/><presentURL>4</presentURL><presentLURL/><presentHURL/><shareDoneeCount>0</shareDoneeCount><safestate>0</safestate><transferstate>0</transferstate><isFocusContent>0</isFocusContent><uploadTime>20160718170034</uploadTime><ETagOprType>0</ETagOprType><openType>0</openType><auditResult>0</auditResult><parentCatalogId>1811asktx23a00019700101000000001</parentCatalogId><channel>APP1ZtqoN3R0002</channel><digest>583B7EFBA3E766EF9B52E7C2929D9308</digest><geoLocFlag>0</geoLocFlag><version/><fileEtag>867062051081937884</fileEtag><encryptFlag>0</encryptFlag><fileVersion>866363835197808497</fileVersion><tombstoned>0</tombstoned><proxyID/><moved>0</moved><owner>13718269220</owner><modifier>13718269220</modifier><shareType>1</shareType><exif><createTime/></exif></contentInfo></result>

=== added file 'tests/server/resources/copy_1811asktx23a057201605161542175gg.xml'
--- tests/server/resources/copy_1811asktx23a057201605161542175gg.xml	1970-01-01 00:00:00 +0000
+++ tests/server/resources/copy_1811asktx23a057201605161542175gg.xml	2016-12-07 12:44:11 +0000
@@ -0,0 +1,1 @@
+<?xml version="1.0" encoding="UTF-8"?><result resultCode="0"><array length="2"><item>181111111111111TMSN6AA5NHVRCRY4V</item></array></result>

=== modified file 'tests/server/resources/download-file-request-template.xml'
--- tests/server/resources/download-file-request-template.xml	2016-09-13 06:55:27 +0000
+++ tests/server/resources/download-file-request-template.xml	2016-12-07 12:44:11 +0000
@@ -1,1 +1,1 @@
-<?xml version="1.0" encoding="UTF-8"?><result resultCode="0"><String>http://127.0.0.1:[port]/storageWeb/servlet/pcDownloadFile?code=1811asktx23a054201604201417321zo01617dyp5-gOv&amp;contentID=[download_file_id]&amp;dom=D914&amp;oprChannel=APP1ZtqoN3R0002&amp;filename=QXBvbGxvIFJvYWQgd2l0aCBEYXNoIEJlcmxpbiAoMSkubXAz</String></result>
+<?xml version="1.0" encoding="UTF-8"?><result resultCode="0"><String>http://127.0.0.1:[port]/storageWeb/servlet/pcDownloadFile?code=1811asktx23a054201604201417321zo01617dyp5-gOv&amp;contentID=[download_file_id]&amp;dom=D914&amp;oprChannel=APP1ZtqoN3R0002&amp;filename=[file_name]</String></result>

=== added file 'tests/server/resources/no_such_content_id.xml'
--- tests/server/resources/no_such_content_id.xml	1970-01-01 00:00:00 +0000
+++ tests/server/resources/no_such_content_id.xml	2016-12-07 12:44:11 +0000
@@ -0,0 +1,1 @@
+<?xml version="1.0" encoding="UTF-8"?><result resultCode="9102" desc="[212|saes_CYCommon|673F558E07604214B59ACF5579CB4514]Failed to invoke the service.catalogID/contentID[id] invalid[NDA(100071)][Flag:673F558E07604214B59ACF5579CB4514]"></result>

=== modified file 'tests/server/resources/no_such_folder_id.xml'
--- tests/server/resources/no_such_folder_id.xml	2016-09-13 06:55:27 +0000
+++ tests/server/resources/no_such_folder_id.xml	2016-12-07 12:44:11 +0000
@@ -1,1 +1,1 @@
-<?xml version="1.0" encoding="UTF-8"?><result resultCode="9101" desc="[212|saes_CYCommon|673F558E07604214B59ACF5579CB4514]Failed to invoke the service.catalogID[no_such_folder_id] invalid[NDA(100071)][Flag:673F558E07604214B59ACF5579CB4514]"></result>
+<?xml version="1.0" encoding="UTF-8"?><result resultCode="9101" desc="[212|saes_CYCommon|673F558E07604214B59ACF5579CB4514]Failed to invoke the service.catalog/contentID[id] invalid[NDA(100071)][Flag:673F558E07604214B59ACF5579CB4514]"></result>

=== modified file 'tests/server/server.py'
--- tests/server/server.py	2016-10-09 03:29:43 +0000
+++ tests/server/server.py	2016-12-07 12:44:11 +0000
@@ -30,6 +30,7 @@
 import random
 import re
 import time
+import shutil
 
 ACCESS_TOKEN = 'the_access_token'
 
@@ -37,6 +38,19 @@
 
 SOCK_PORT = 0
 
+ID_NAME_MAP = {
+        "1811asktx23a05620160425125424fle":"Ubuntu booth tour at MWC 2016.mp4",
+        "1811asktx23a054201604201417321zo":"Apollo Road with Dash Berlin.mp3",
+        "1811asktx23a0572016042014173129t":"IMG_1887.gif",
+        "1811asktx23a05620160420134213zx4":"欢迎使用和彩云.pdf",
+        "1811asktx23a058201604201519046ec":"Screenshot_2015-10-29-22-10-51.png",
+        "1811asktx23a05520160718170034xh1":"animal.png",
+        };
+
+CONTENT_SIZE_MAP = {
+        "animal.png":468839,
+        };
+
 AUTHORIZATION_BEARER = 'Bearer %s' % ACCESS_TOKEN
 
 def read_file(path):
@@ -48,10 +62,9 @@
         raise Exception("File '%s' not found\n" % file)
     return content
 
-def create_file(path):
+def create_file(path, size = 1024 * 1024 * 10):
     file = os.path.join(os.path.dirname(__file__), path)
     with open(file, "wb") as fp:
-        size = random.randint(1024, 1024 * 1024 * 10)
         fp.truncate(size)
 
 def replace_folder_id(self, folder_id, resource_id):
@@ -68,7 +81,21 @@
             for line in newlines:
                 f.write(line)
 
-def generate_content_info(path, id, name, size, folder_id):
+def replace_content_id(self, content_id, resource_id):
+    old_str = ('/?<contentID>.*</contentID>')
+    new_str = ('<contentID>%s</contentID>') % content_id
+    path = ('resources/content_%s.xml') % resource_id
+    file = os.path.join(os.path.dirname(__file__), path)
+    if os.path.isfile(file):
+        with open(file, 'r') as f:
+            newlines = []
+            for line in f.readlines():
+                newlines.append(re.sub(old_str, new_str, line))
+        with open(file, 'w') as f:
+            for line in newlines:
+                f.write(line)
+
+def generate_content_info(id, name, size, folder_id):
     t_file = os.path.join(os.path.dirname(__file__), 'resources/content_info_template.xml')
     with open(t_file, 'r') as f:
         newlines = []
@@ -77,51 +104,56 @@
             result = result.replace('[content_name]', name)
             result = result.replace('[content_size]', size)
             newlines.append(result.replace('[parent_folder_id]', folder_id))
-    file = os.path.join(os.path.dirname(__file__), path)
-    with open(file, 'w') as f:
-        for line in newlines:
-            f.write(line)
-
-def generate_download_info(path, id):
-    d_file = os.path.join(os.path.dirname(__file__), 'resources/download_info_template.xml')
-    with open(d_file, 'r') as f:
-        newlines = []
-        for line in f.readlines():
-            newlines.append(line.replace('[content_id]', id))
-    file = os.path.join(os.path.dirname(__file__), path)
-    with open(file, 'w') as f:
-        for line in newlines:
-            f.write(line)
-
-def generate_folder_info(path, name, folder_id):
+    file = os.path.join(os.path.dirname(__file__), ('resources/content_%s.xml') % id)
+    with open(file, 'w') as f:
+        for line in newlines:
+            f.write(line)
+
+def generate_folder_info(file_name, name, folder_id):
     d_file = os.path.join(os.path.dirname(__file__), 'resources/create_folder_template.xml')
     with open(d_file, 'r') as f:
         newlines = []
         for line in f.readlines():
             results = line.replace('[folder_name]', name)
             newlines.append(results.replace('[parent_folder_id]', folder_id))
-    file = os.path.join(os.path.dirname(__file__), path)
+    file = os.path.join(os.path.dirname(__file__), ('resources/%s.xml') % file_name)
     with open(file, 'w') as f:
         for line in newlines:
             f.write(line)
 
-def generate_move_info(path, resource_id, mode='content'):
+def generate_move_info(file_name, resource_id, mode='content'):
     d_file = os.path.join(os.path.dirname(__file__), ('resources/move_%s_template.xml') % mode)
     with open(d_file, 'r') as f:
         newlines = []
         for line in f.readlines():
             newlines.append(line.replace('[%s_id]' % mode, resource_id))
-    file = os.path.join(os.path.dirname(__file__), path)
+    file = os.path.join(os.path.dirname(__file__), ('resources/%s.xml') % file_name)
     with open(file, 'w') as f:
         for line in newlines:
             f.write(line)
 
-def generate_copy_info(path, resource_id):
+def generate_copy_info(file_name, resource_id):
     d_file = os.path.join(os.path.dirname(__file__), ('resources/copy_template.xml'))
     with open(d_file, 'r') as f:
         newlines = []
         for line in f.readlines():
             newlines.append(line.replace('[id]', resource_id))
+    file = os.path.join(os.path.dirname(__file__), ('resources/%s.xml') % file_name)
+    with open(file, 'w') as f:
+        for line in newlines:
+            f.write(line)
+
+def copy_content_file(file_name, new_file_name):
+    s_file = os.path.join(os.path.dirname(__file__), ('resources/%s.xml') % file_name)
+    d_file = os.path.join(os.path.dirname(__file__), ('resources/%s.xml') % new_file_name)
+    shutil.copy(s_file, d_file)
+
+def generate_invalid_info(path, resource_id, item_type):
+    d_file = os.path.join(os.path.dirname(__file__), ('resources/no_such_%s_id.xml') % item_type)
+    with open(d_file, 'r') as f:
+        newlines = []
+        for line in f.readlines():
+            newlines.append(line.replace('[id]', ('[%s]') % resource_id))
     file = os.path.join(os.path.dirname(__file__), path)
     with open(file, 'w') as f:
         for line in newlines:
@@ -168,8 +200,7 @@
             time.sleep(10)
         file = 'resources/upload-file-request-template.xml'
         contentId = generate_random_id()
-        content_file = 'resources/content_%s.xml' % (contentId)
-        generate_content_info(content_file, contentId, contentName, contentSize, parentCatalogID)
+        generate_content_info(contentId, contentName, contentSize, parentCatalogID)
 
     content = read_file(file)
     content = content.replace('[port]', str(SOCK_PORT))
@@ -188,9 +219,11 @@
     else:
         file = 'resources/invalid_content_id.xml'
 
+    file_name = ID_NAME_MAP.get(contentId, 'default_file_name').encode('base64').rstrip()
     content = read_file(file)
     content = content.replace('[port]', str(SOCK_PORT))
     content = content.replace('[download_file_id]', contentId)
+    content = content.replace('[file_name]', file_name)
 
     self.write(content)
     self.finish()
@@ -227,8 +260,7 @@
                 parentCatalogID = catalog[0].getElementsByTagName('parentCatalogID')[0].firstChild.data
                 if is_valid_id(parentCatalogID):
                     catalogId = generate_random_id()
-                    folder_file = 'resources/%s.xml' % (catalogId)
-                    generate_folder_info(folder_file, catalogName, parentCatalogID)
+                    generate_folder_info(catalogId, catalogName, parentCatalogID)
                 else:
                     catalogId = "invalid_folder_id"
 
@@ -243,8 +275,7 @@
                     resourceId = catalogInfoList.getElementsByTagName('ID')[0].firstChild.data
                     catalogId = 'move_' + resourceId
                     folderId =  'folder_' + resourceId
-                    move_file = 'resources/%s.xml' % (catalogId)
-                    generate_move_info(move_file , resourceId , "folder");
+                    generate_move_info(catalogId , resourceId , "folder");
                     replace_folder_id(self, newCatalogID, folderId)
                 if int(contentInfoList.attributes['length'].value) > 1:
                     catalogId = 'move_content_multiple'
@@ -252,8 +283,7 @@
                     resourceId = contentInfoList.getElementsByTagName('ID')[0].firstChild.data
                     catalogId = 'move_' + resourceId
                     contentId = 'content_' + resourceId
-                    move_file = 'resources/%s.xml' % (catalogId)
-                    generate_move_info(move_file , resourceId, "content");
+                    generate_move_info(catalogId , resourceId, "content");
                     replace_folder_id(self, newCatalogID, contentId)
 
             updates = dom.getElementsByTagName('updateCatalogInfo')
@@ -265,24 +295,30 @@
                 newCatalogID = copies[0].getElementsByTagName('newCatalogID')[0].firstChild.data
                 catalogInfoList = copies[0].getElementsByTagName('catalogInfoList')[0]
                 contentInfoList = copies[0].getElementsByTagName('contentInfoList')[0]
-                if int(catalogInfoList.attributes["length"].value) > 1:
-                    catalogId = 'copy_multiple_folder'
-                elif int(catalogInfoList.attributes["length"].value) > 0:
-                    resourceId = catalogInfoList.getElementsByTagName('ID')[0].firstChild.data
-                    catalogId = 'copy_' + resourceId
-                    folderId =  'folder_' + resourceId
-                    copy_file = 'resources/%s.xml' % (catalogId)
-                    generate_copy_info(copy_file, resourceId);
-                    replace_folder_id(self, newCatalogID, folderId)
-                if int(contentInfoList.attributes['length'].value) > 1:
-                    catalogId = 'copy_multiple_content'
-                elif int(contentInfoList.attributes['length'].value) > 0:
-                    resourceId = contentInfoList.getElementsByTagName('ID')[0].firstChild.data
-                    catalogId = 'copy_' + resourceId
-                    contentId = 'content_' + resourceId
-                    copy_file = 'resources/%s.xml' % (catalogId)
-                    generate_copy_info(copy_file, resourceId);
-                    replace_folder_id(self, newCatalogID, contentId)
+                if newCatalogID == "1811asktx23a057201605161542175lg": #code coverage for storage quota.
+                    catalogId = newCatalogID 
+                else:
+                    if int(catalogInfoList.attributes["length"].value) > 1:
+                        catalogId = 'copy_multiple_folder'
+                    elif int(catalogInfoList.attributes["length"].value) > 0:
+                        resourceId = catalogInfoList.getElementsByTagName('ID')[0].firstChild.data
+                        catalogId = 'copy_' + resourceId
+                        folderId =  'folder_' + resourceId
+                        generate_copy_info(catalogId, resourceId);
+                        replace_folder_id(self, newCatalogID, folderId)
+                    if int(contentInfoList.attributes['length'].value) > 1:
+                        catalogId = 'copy_multiple_content'
+                    elif int(contentInfoList.attributes['length'].value) > 0:
+                        resourceId = contentInfoList.getElementsByTagName('ID')[0].firstChild.data
+                        catalogId = 'copy_' + resourceId
+                        contentId = 'content_' + resourceId
+                        new_resourceId = generate_random_id()
+                        generate_copy_info(catalogId, new_resourceId);
+
+                        new_contentId = 'content_' + new_resourceId;
+                        copy_content_file(contentId, new_contentId)
+                        replace_folder_id(self, newCatalogID, new_contentId)
+                        replace_content_id(self, new_resourceId, new_resourceId)
 
         file = 'resources/%s.xml' % catalogId
         self.write(read_file(file))
@@ -298,8 +334,15 @@
             if disk:
                 catalogIdList = disk[0].getElementsByTagName('catalogIDs')
                 contentIdList = disk[0].getElementsByTagName('contentIDs')
-                if (int(catalogIdList[0].attributes['length'].value) > 0 
-                        or int(contentIdList[0].attributes['length'].value) > 0):
+                if int(catalogIdList[0].attributes['length'].value) > 0 :
+                    folderId = catalogIdList[0].getElementsByTagName('ID')[0].firstChild.data
+                    path = 'resources/%s.xml' % (folderId)
+                    generate_invalid_info(path, folderId, 'folder')
+                    file = 'resources/delete_result.xml'
+                if int(contentIdList[0].attributes['length'].value) > 0 :
+                    contentId = contentIdList[0].getElementsByTagName('ID')[0].firstChild.data
+                    path = 'resources/%s.xml' % (contentId)
+                    generate_invalid_info(path, contentId, 'content')
                     file = 'resources/delete_result.xml'
 
             content = dom.getElementsByTagName('getContentInfo')
@@ -353,12 +396,15 @@
 
 class DownloadFile(ErrorHandler):
     def get(self):
-        data = self.request.arguments['filename'][0]
+        data = self.get_argument('filename', 'default_name')
         data = data.replace(' ', '+') 
-        contentName = str(data).decode('base64')