BitComet - Downloads

v2.03 [Windows] [macOS] 2023.8.22: GUI Improve: The Remote Download page of the Options window allows you to set the RSS feed password to access the local task list; GUI Improve: The torrent maker window displays the number of files the task contains; GUI Improve: Change the size of the BT task in the task list, task summary, and task disk information to the total file size without file boundary padding; GUI Improve: Optimized the behavior of automatically hiding tabs when switching tasks when "Always show all tabs" is not selected in the Tab bar in the lower right panel; GUI Improve: The server list of HTTP tasks and the tracker list of BT tasks are always displayed in the same position as the tab bar in the lower right corner; GUI Improve: The Connections list of HTTP tasks and the Peers list of BT tasks are always displayed in the same position as the Tab bar in the lower right corner; GUI Improve: support usernames and passwords in HTTP links of RSS feeds; GUI Improve: In the option, the eMule TCP and UDP listening port can be set separately; GUI Bugfix: When the tracker list is all selected, the right-click menu Update Tracker command is grayed out; Core Improve: Ignore .DS_Store files when making torrent files
v2.02 [Windows] [macOS] 2023.8.9: GUI Improve: The right-click context menu when selecting multiple tasks can set the task speed limit in batches; GUI Improve: Added option: When updating the tracker list from a URL, merge or replace the original tracker list; GUI Improve: New option to move all files in the directory when move a task to new folder; GUI Improve: After you click to enlarge the task screenshot, you can toggle whether it is displayed in full screen; GUI Improve: The Global Options window automatically remembers the window size; GUI Improve: Adds the option to not prompt again for the dialog of moving task download files to the directory associated with the tag displayed when adding a tag to a task; GUI Improve: Improved peer list freeze status prompt; GUI Bugfix: After setting tag for tasks, there is a problem refreshing the list of tags in the toolbar and left pane; GUI Bugfix: When "Tray Balloon" is not enabled, the task completion message in the notification list is empty; GUI Bugfix: When BT task seeding, the peer list does not display the user's upload speed; GUI Bugfix: Individual translation errors; Core Bugfix: When move a task folder, undownloaded tasks cannot be moved to a different directory with the same drive letter
v2.01 [Windows] [macOS] 2023.6.16: GUI Improve: New Option in BT Task of Option Window: Delete torrent file after adding task; GUI Improve: Add a scroll bar to the page on the right side of the options window; GUI Improve: Floating window supports dragging and dropping infohash to initiate BT download; GUI Improve: Add a notification prompt window in the bottom right corner of the main window, and display performance limit prompts when running 32-bit programs on a 64 bit system; GUI Improve: display performance limit prompts when running 32-bit programs on a 64 bit system; GUI Improve: Fluent style icons, can be enabled by Skins submenu of View menu (thanks to Aira Sakuranomiya); GUI Improve: improve the batch download dialog box to prevent stuttering when displaying a large number of links; GUI Improve: support multiple lines of input when adding a peer to a BT task; GUI Bugfix: enhance the accuracy of clipboard recognition for infohash; GUI Bugfix: Fix local recorded cometID score data error; GUI Bugfix: When copying a task link, there is an extra line break at the end; GUI Bugfix: misjudgment of file association check; Core Improve: Add advanced settings: ui.preview_program_detection After disabling, use the system default program to open video files; Core Improve: Add task list rss feed to webui in expert mode; Core Improve: When moving task download folder, the Torrent file in the folder is also moved; Core Bugfix: if enabled moving files after download complete, the sound prompt for task complete fails; Core Bugfix: supports FUSE-rclone partitions
v2.00 [Windows] [macOS] 2023.5.15: GUI Improve: the clipboard monitoring feature supports Infohash string recognition; GUI Improve: when monitoring links in the clipboard, malformed magnet links are ignored; GUI Improve: a prompt is displayed when the number of online devices for the same account reaches the limit; GUI Improve: new advanced setting network.enable_open_dns; GUI Improve: in the RSS page of Options window, the delete button is replaced with an add button for RSS list; GUI Improve: in the RSS page of Options window, double-click the RSS list to open the editing window; GUI Improve: the x2 high-scoring images are always loaded when the DPI scale is greater than 100%; GUI Improve: supports 64MB piece size when making torrents; GUI Improve: command line parameters can specify the piece size when making a torrent file; GUI Improve: when making torrent files in silent mode with command-line arguments, the default trackers are used; GUI Improve: display a introduction window when click the Subscriber tag in the passport pane; GUI Improve: display Support Us page of Options window when click the Supporter tag in the passport pane; GUI Improve: list grid lines are not displayed in dark mode; GUI Improve: improved pane splitter color in dark mode; GUI Bugfix: RSS sidebar reverts to borderless display style; GUI Bugfix: in the absence of any tasks, the status bar will still show preparing for long-term seeding; GUI Bugfix: the disk write statistics in the remote download web interface are displayed incorrectly; Core Improve: when exchange the magnet links, the proportion of content from Torrent Collection has increased; Core Improve: supports FUSE-rclone partitions; Core Bugfix: an error occurred when moving the downloaded file in the tasks in which only part of files are selected to download; Core Bugfix: program cannot start in Windows XP
v1.99 [Windows] [macOS] 2023.4.5: GUI Improve: Add dark mode, follow system settings by default, can be switched in the main window view menu (requires Win10 1809 or later); GUI Improve: Task snapshots and task comments changed to WebView2 (requires Win7 or later, needs install necessary component for early Windows versions); GUI Improve: The CometID pane in the left bottom corner changed to WebView2; GUI Improve: Add advanced option system.disable_edge_backend; GUI Improve: Add "submit snapshot" to context menu of task list in expert mode; GUI Bugfix: Task snapshots not shown for magnet links; GUI Bugfix: After clicking on the magnet link in the browser to start the main comet program, the main window becomes unresponsive; GUI Bugfix: When DPI is selected for 150% scaling, the toolbar's icons do not display correctly; GUI Bugfix: When dragging a URL from a browser page to a floating window, there is an additional underscore character at the end of the URL; Core Improve: Task snapshots and task comments switched to new transport protocol; Core Improve: Add local cache to task screenshots to avoid re-downloading each time when they are displayed; Core Improve: the cloud service for remote connection now available for all CometID users; Core Bugfix: The UDP tracker cache data is not cleaned up in time, causing the program to freeze when exiting; Core Bugfix: When the RSS Auto Downloader keyword is empty, downloads should be allowed; Core Bugfix: The downloaded file will not be deleted when deletes BT task immediately after moving the downloaded files; Core Bugfix: For a single-file BT task, the movement of the downloaded file will fail if the task is not completed; Core Bugfix: After an HTTP task stops downloading due to insufficient disk space, the downloaded files are not deleted when the task is deleted; Core Bugfix: No progress is displayed when moving files across partitions for HTTP task; Core Bugfix: The RSS auto-update interval setting does not take effect; Core Bugfix: fix incorrect reconnection algorithm when updating CometID score info
v1.98 [Windows] [macOS] 2022.12.8: GUI Improve: Remember whether to add to blacklist when remove torrent entries; GUI Bugfix: The status of UDP port in the global statistics is inaccurate; Core Bugfix: When the long-term upload cache is insufficient, the program may crash
v1.97 [Windows] [macOS] 2022.11.22: GUI Improve: RSS automatic download filter supports regular expressions; GUI Improve: The status icon when the task is moving is changed from orange to blue; GUI Improve: Improve the speed of batch adding tasks; GUI Improve: Save torrent list auto refresh option; GUI Improve: When deleting an entry from the torrent list, you can choose to add its infohash to the blocklist; GUI Improve: Settings menu from torrent list toolbar can clear infohash blocklist; GUI Improve: Infohash blocklist can be selected when importing and exporting backup files; GUI Improve: The statistics page shows the length of the torrent list infohash blocklist; GUI Improve: The maximum number of torrent lists supports customization; Core Bugfix: When the long-term upload cache is insufficient, the program may crash
v1.96 [Windows] [macOS] 2022.11.15: GUI Improve: when multiple BT tasks are selected in the task list, the right-click menu adds a command for batch setting long-term seeding; GUI Improve: add cache statistics reset command to the right-click menu of the statistics list; GUI Improve: associate the bc_bak file, double click to display the data import dialog; GUI Improve: new advanced option: ui.file_size_prefix, set unit prefixes of file size to a multiple of 1000 or 1024 (keep 1024 for memory size); GUI Improve: the maximum length of task tag has been changed from 30 characters to 50 characters; GUI Improve: new advanced option: network.max_connecting_connections_per_tracker with default value 6; GUI Improve: add background tasks icons to the status bar, including torrent list loading, importing, and long-term seed preparation; GUI Improve: exit the program when the background task of torrent list import is not completed, and a prompt dialog box will be displayed; GUI Improve: in expert mode, the statistics page shows the number of HTTP trackers that are initiating connections; GUI Improve: in expert mode, the statistics page displays the message queue length; GUI Improve: add options menu to the search box in task list and torrent list, supports regular expressions; GUI Improve: supports regular expressions in blocklist of Torrent Collection; GUI Improve: updates the packages files of browser extension for Chrome and Edge in tools folder, fixes the problem that the onDeterminingFilename interface may conflict with other extensions; GUI Improve: peer list of BT task no longer shows eMule sources for files that are forbidden to download; GUI Bugfix: input focus should not be set when task completes; GUI Bugfix: when command line parameters --silent --url used together, BC links of HTTP type are not supported; GUI Bugfix: when RSS auto download creates tasks, the function of adding the RSS feed title as a tag fails; GUI Bugfix: after RSS auto download creates tasks, the number of tasks on the left fav bar is not refreshed; GUI Bugfix: when a large number of tasks are started and stopped, the message processing time of UI refresh is long and network transmission is delayed; Core Improve: optimize the long-term seeding disk caching strategy, improve the hit rate, and reduce the number of disk reads; Core Improve: supports filtering and sorting the task list for Remote Connection from Android APP; Core Improve: save the setting file regularly and record the cumulative upload and download amount; Core Improve: when the disk writing buffer of BT task is too large, the download request will no longer be suspended. Instead, the task will automatically limit the speed when the available memory is insufficient.; Core Bugfix: exiting the program when a large number of tasks are running will delay for a long time; Core Bugfix: fix the issue that the uTP initiation mode option when manually adding peer and the advanced option utp_after_holepunch didn't work; Core Bugfix: when separate_sources_for_failed_piece is enabled, after the piece hash verification fails, the entire piece cannot be re-downloaded separately from long-term seeds in some cases
v1.95 [Windows] [macOS] 2022.10.17: GUI Improve: new command in context menu of RSS list: Rename feed; GUI Improve: enhance RSS download filter in Option dialog: rename and set task tag for each feed; GUI Improve: after enable the expert mode, the BT task peer list shows the uTP MTU size; GUI Improve: new advanced option: bittorrent.private_torrent_peer_hole_punch, supports UDP port hole_punch for private torrent without PEX; GUI Improve: CPU usage of long-term seeding thread can be displayed in flow graph; GUI Improve: at program startup, maximized window possibly not restored on the monitor when it was last exited; GUI Improve: the max value of network.max_udp_pkt_per_sec changed to 1000000 from 10000; GUI Improve: display CPU usage and storage usage in Statistics list; GUI Improve: web interface of remote download shows the full statistics list; GUI Improve: change moving files for stopped task to asynchronous operation in background thread; GUI Improve: the BT disk cache and long-term upload cache limit in option window increased to 1TB for 64-bit version; GUI Improve: the peer status in the BT task peer list shows the failure count of TCP, uTP, and UDP hole punching respectively.; GUI Bugfix: main window close button set to minimize to tray sometimes fails; Core Improve: automatically adjust the MTU size after uTP connection established; Core Improve: when connecting to uTP peers, prefer to use the previously connected remote port; Core Improve: BT task sends the PEX message as soon as possible after connecting to a peer; Core Improve: when advanced option bittorrent.utp_after_holepunch is set to auto, initiate uTP connection first, then try UDP hole punching after failure; Core Bugfix: disconnect websocket connections when timeout; Core Bugfix: data verify error for web seed downloading if there are files of the same size in the BT task
v1.94 [Windows] [macOS] 2022.9.11: New Feature: support the cloud service for remote connection, to let BitComet Mobile APP connects to the desktop edition of BitComet behind NAT/Firewall with end-to-end encryption. (requires BitComet Mobile App v1.8.0); GUI Improve: select direct mode or cloud service mode when bind APP with QR code; GUI Improve: merge devices dialog into bind App dialog; GUI Improve: support multiple selection and rename in devices dialog; GUI Improve: display status icon of cloud service for remote connection in bottom status bar; GUI Improve: add option to enable cloud service for remote connection in Option window; Core Bugfix: websocket disconnect by remote not handled correctly
v1.93 [Windows] [macOS] 2022.8.22: GUI Improve: new advanced option: torrent_share.metadata_log_retention_period; GUI Bugfix: memory usage details display problem in Statistics list; Core Improve: optimize sqlite data loading speed for torrent lists; Core Bugfix: fix the issue of downloading the metadata of a magnet link from RSS torrent list while downloading the metadata of a DHT torrent with the same infohash; Core Bugfix: the torrent list is easy to freeze and crash when sorting by comments, screenshots, or popular; Core Bugfix: enhanced torrent list sqlite database operation stability; Core Bugfix: The operation may fail when creating a long path file
v1.92 [Windows] [macOS] 2022.7.18: GUI Improve: add toolbar to the Graph pane. Add torrent list data to memory usage graph; GUI Improve: set the main window to foreground if BitComet already running when open BitComet from browser extension; GUI Improve: when install Firefox extension in installer, open the plugin web in Firefox even if it's not the default browser; GUI Improve: add task logs, metadata download and reserved regions to memory usage graph; GUI Improve: save the options of flow graphs; GUI Improve: add the size of reserved memory regions to Statistics pane; GUI Improve: new advanced option: bittorrent.multi_peers_same_ip, allow multiple peers connected from same IP by default; GUI Improve: refine the reason why the peer is banned; GUI Improve: optimize the operation of BT tasks with huge number of files; GUI Bugfix: should not show the task finish notification if the tray ballon disabled in the context menu of tray icon; Core Improve: improve program crash error reporting; Core Bugfix: when the number of metadata caches is large, the number of downloaded metadata displayed in the left favorites is inaccurate; Core Bugfix: when DHT is turned off, the task stops early when downloading the metadata of magnet link only from the peers returned from trackers
v1.91 [Windows] [macOS] 2022.7.4: GUI Improve: new option in HTTP task properties dialog: send custom HTTP headers to mirror addresses; GUI Improve: new option in add HTTP task page of Remote Download: send custom HTTP headers to mirror addresses; GUI Improve: add RSS feeds option in export and import dialog; GUI Improve: display metadata cache info in Statistics pane; GUI Improve: supports custom_headers_for_mirrors parameter in BC link; GUI Improve: new peers banned reason in the BT task peer list: connection_limit; GUI Improve: new button in integration page of Option dialog: Install Edge Extension; GUI Bugfix: the file list below the torrent list supports non-utf8 encoded non-standard torrent files; GUI Bugfix: snapshot icon should be displayed in torrent list for all torrents knowing infohash; GUI Bugfix: the metadata status in torrent list is not always accurate; GUI Bugfix: during the sorting of the torrent list, setting search keywords has no effect; GUI Bugfix: after adding a task, the selected status of the task tag in the left favorites bar is lost; Core Improve: remove the passkey parameter in tracker URL when save private torrent from Magnet Link to Torrent History; Core Improve: new BitComet Extension for Edge; Core Improve: update BitComet Extension for Firefox; Core Improve: reduce the waiting time to initiate a connection after receiving a new peer; Core Improve: when copying the magnet link of a private torrent, remove the passkey parameter in the tracker link; Core Bugfix: abnormal data may cause memory access violation in IP2Location module
v1.90 [Windows] [macOS] 2022.6.12: GUI Improve: file names in torrent can be renamed in task properties dialog when task stopped; GUI Improve: file names in torrent can be renamed in file list pane when task stopped; GUI Improve: add advanced option: http.max_mirror_count; GUI Improve: add advanced option: ui.show_all_tasks_after_add_task; GUI Improve: the file list below torrent list supports torrent v2; GUI Improve: when display the files below torrent list, auto update missing information for this torrent; GUI Bugfix: when the peer list is sorted by client type, the banned peers have no effect; GUI Bugfix: there is a a blank line in the save directory drop-down box of BT task properties dialog; Core Improve: limit the length of data received from the HTTP tracker; Core Bugfix: some information not updated for RSS torrents; Core Bugfix: improve stability of downloading from Long-Term Seeds
v1.89 [Windows] [macOS] 2022.6.1: GUI Improve: support multiple update URLs for trackerslist in Tracker page of option window; GUI Improve: torrent size estimation supports torrent v2; GUI Improve: improve the condition to show the enable DHT prompt for magnet URI; GUI Improve: add file switch buttons in snapshot page; GUI Bugfix: should not display the task properties dialog after creating a new torrent file; Core Improve: improve crash report; Core Bugfix: bug when downloading torrent v2 larger than 4GB; Core Bugfix: advanced option bittorrent.enable_v1_upgrade_to_v2 does not work
v1.88 [Windows] [macOS] 2022.5.24: GUI Improve: add format option in torrent maker dialog, including v1, v2 and hybrid format; GUI Improve: display Infohash v1 and Infohash v2 separately in BitTorrent task summary pane; GUI Improve: display the number of piece hashes obtained for torrent v2; GUI Improve: display the protocol version of BitTorrent peers in the peer list of BT task; GUI Improve: add advanced option: bittorrent.enable_v1_upgrade_to_v2, to allow peer protocol upgrade for hybrid torrent; GUI Improve: copy the infohash v1, v2 and name of BT task from context menu; GUI Improve: supports mirror, user_agent and cookie parameters in BC link; GUI Bugfix: always using default save folder for magnet URI if torrent can be found in Torrent History; GUI Bugfix: do not select the URL text when displays the task Properties dialog of HTTP task; GUI Bugfix: the TAB key doesn't works with the save folder edit box in task Properties dialog; GUI Bugfix: handle the case of taskbar on top of screen when restore main window position; GUI Bugfix: the restored main window position is invalid after secondary monitor removed; Core Improve: support creating torrent of v2 format, which includes metadata of v2, and the piece hashes of v2; Core Improve: support creating torrent of hybrid format, which includes metadata of v1 & v2, and the piece hashes of v2; Core Improve: when exporting torrent from BT task of v2 format, a full v2 torrent file will be exported if all piece hashes of v2 are obtained, or a compact torrent file will be exported which only contains metadata; Core Improve: support open torrent of v2 format and hybrid format, in which the piece hashes of v2 are optional; Core Improve: support download the magnet URI of v2 format and hybrid format, whose metadata size are much smaller than magnet URI of v1 format; Core Improve: support hash request commands of BitTorrent v2 protocol in peer connections, to download the piece hashes of v2 format and the leaf hashes of file hash tree; Core Improve: support upgrade the peer connections to BitTorrent v2 protocol for hybrid torrent; Core Improve: when the leaf hashes of file hash tree are obtained, the file data can be verified in 16KB blocks; Core Bugfix: can't handle the Content-Disposition HTTP response header if filename and filename* attributes appear together; Core Bugfix: can not fetch Cookies from Chrome and Edge of new version
v1.87 [Windows] 2022.3.28: GUI Improve: add super seed option to task list right-click menu; GUI Improve: add copy Infohash command to task list right-click menu; GUI Improve: add context menu with copy command to the task summary pane; GUI Improve: added a sequential download mode option to the Download Order page of the BitTorrent task properties dialog; GUI Improve: new proxy server option: enable proxy server for RSS feeds; GUI Improve: when no port listening, the port status in the lower right corner of the main window is changed from "not detected" to "not listening"; GUI Improve: if the task list is sorted, display a prompt to cancel the sorting first when using the shortcut keys to adjust the download order; GUI Improve: add translation of RSS update time; GUI Improve: the language menu item displays the native language name for each language; GUI Improve: after selecting the user group title such as "Connected" in the BT task peer list, you can directly ban or delete all users in the group; GUI Improve: peers which are banned in the BT task peer list will display the reason for the ban; GUI Improve: add advanced option: torrent_share.load_lists_at_startup; GUI Improve: add advanced option: bittorrent.separate_sources_for_failed_piece; GUI Improve: update Chrome extension file in install package; GUI Bugfix: The background color of the input box in some dialog boxes is abnormal; GUI Bugfix: after modifies the save directory in the HTTP task properties dialog several times, the disk space is displayed in the wrong color; GUI Bugfix: zero size file in the file list below torrent list should not be shown as a directory; Core Improve: after the downloaded piece has an error in the hash check, try to re-download the entire piece from different peers; Core Improve: support GBK encoding when parsing RSS XML data; Core Improve: if the parameters submitted from remote download are incomplete, use the default save path and number of connections; Core Bugfix: SNI should not be sent when the HTTPS connection hostname is an IP address; Core Bugfix: In some cases, the magnet URI task fails to complete the metadata download; Core Bugfix: the connections to web seed for HTTP resume detection are not closed in time
v1.86 [Windows] [macOS] 2022.2.28: GUI Improve: display task tags in left favorites bar; GUI Improve: add copy LAN IP command to the context menu of listen port detect light; GUI Improve: new proxy options: use proxy for HTTP, webpage or other network traffic; GUI Improve: specify file save name, User-Agent, Cookie and mirror URLs when adding HTTP task in remote download webpage; GUI Improve: new advanced option: task.stop_task_after_get_metadata; GUI Bugfix: folder choose button not work in BitTorrent task properties dialog while downloading metadata; GUI Bugfix: full URL of mirror servers added by user for HTTP task not displayed in Servers pane; GUI Bugfix: RSS update countdown log info displayed repeatedly; GUI Bugfix: settings of global download/upload speed limit displayed incorrectly in remote download webpage; Core Bugfix: metadata request not sent to incoming peers sometimes when downloading magnet URI; Core Bugfix: program may crash if super seeding enabled
v1.85 [Windows] [macOS] 2022.1.18: GUI Improve: display my download progress as a super seed in peer list if super seeding enabled; GUI Improve: remember the last peer address added to peer list manually; GUI Improve: add web_seed category in the connection detail list in Statistics pane; GUI Improve: add option of sorting for memory detail info in the context menu of Statistics pane; GUI Improve: improve the Dump Memory Info command in help menu if expert mode enabled; GUI Improve: Chrome extension will choose correct main program edition either of x64/x86 from non-install folder; GUI Improve: server list of HTTP/FTP task will display the number of active connections; GUI Improve: add remove button for RSS auto-downloader filters; Core Improve: optimize the super seed piece selection algorithm, transmit the most rare block first; Core Improve: decrease the CPU usage for the DHT network; Core Improve: do not pre-allocate disk cache for HTTP task; Core Bugfix: the size of TCP transfer buffer in Statistics pane is incomplete; Core Bugfix: failed to allocate piece cache for uploading if the disk cache of BT task reaches max value; Core Bugfix: failed to download files from root directory of FTP server; Core Bugfix: HTTP/FTP task should stop only when all connections failed
v1.84 [Windows] [macOS] 2021.11.29: GUI Improve: save the list header width and order of flat list and tree list of files separately; GUI Improve: the cache size of HTTP task in Statistics pane is divided into receiving cache and disk writing cache; GUI Improve: display the TCP transfer buffer size in statistics pane, and sort the memory size list by size; GUI Improve: allow to use the clipboard keyboard shortcuts in embedded web pages; GUI Improve: display the number of opened files of BT task in Summary if expert mode enabled; GUI Improve: rename the Task Statistics dialog in context menu for multiple tasks to Disk Info dialog, also available for single task now; GUI Improve: display the detail info for the number of TCP connections in Statistics pane; GUI Bugfix: sometimes the piece size display in Torrent Maker dialog is incorrect if auto piece size is chosen; Core Improve: the trigger condition of download rate auto-limit for HTTP task changed from the size of disk flushing size to size of available memory size; Core Improve: the redirect URL in remote download web page is changed to relative path, to support reverse proxy; Core Improve: add a new DHT bootstrap node; Core Bugfix: program may crash when downloading metadata
v1.83 [Windows] [macOS] 2021.11.20: GUI Improve: allow to modify download URL of HTTP task when task stopped; GUI Improve: add User-Agent and Cookie settings in HTTP task properties dialog; GUI Improve: new advanced option: http.auto_import_cookie; GUI Improve: the limit of HTTP connection cache size changed to 32MB in Option Dialog; GUI Improve: new Torrent Exchange page in Option Dialog; GUI Improve: new setting of custom save folder for torrent cache files in Torrent Exchange page of Option Dialog; GUI Improve: new setting of save in multi-level directories for torrent cache files in Torrent Exchange page of Option Dialog; GUI Improve: show status indication in toolbar of torrent list when filtering or sorting; GUI Improve: new option for Torrent Collect and RSS Torrents: Only show torrents with metadata; GUI Improve: show the memory size used for file list and metadata download in Statistics pane; GUI Improve: improve check-box display in file list when scaling in unequal multiples of DPI; GUI Improve: tag toolbar supports auto-wrap; GUI Improve: auto resize the width of file-name column in the file list of BT task properties dialog; GUI Improve: the Chrome extension supports capture the file download invoked by JavaScript; GUI Improve: Capture download file option in Chrome extension no longer affected by the main program; GUI Bugfix: the Chrome extension can not get correct referrer URL when download links from Downloads Tab of Chrome; GUI Bugfix: fix refresh issues in task Summary pane; GUI Bugfix: do not show the UDP upload rate limit for long-term seeding if not enabled in Statistics pane; GUI Bugfix: do not reset the size of BT task properties dialog after metadata downloaded; GUI Bugfix: the text in the headers of file list not refreshed after switch UI language; GUI Bugfix: status bar will display incorrect DHT state if DHT disabled while DHT startup delay enabled; Core Improve: offer peer version info with Mac of Android suffix to other BitTorrent peers; Core Improve: try to retrieve cookie info from Chrome/Edge browser when download HTTP URL directly; Core Improve: support the filename* attribute in Content-Disposition info of HTTP response headers; Core Improve: user can suspend all active tasks and manually resumes them after program restart; Core Improve: decrease the CPU usage of torrent list when no sort applied; Core Improve: reduce the UI lag when operate the BT tasks with large number of files; Core Improve: reduce CPU usage for adding torrent records to torrent list; Core Bugfix: disk boost service is not invoked for HTTP task when the setting of allocate space before downloading disabled; Core Bugfix: key word filter for torrent list works incorrectly for non-Latin characters; Core Bugfix: program crash if export backup file while torrent list is loading from database file; Core Bugfix: when search mirror for HTTP task enabled, download may still failed after changing original URL; Core Bugfix: memory not released after metadata download finished in some cases; Core Bugfix: the disk boost service set file size incorrectly in some cases
v1.82 [Windows] [macOS] 2021.10.26: GUI Improve: add HTTP servers pane below the task list; GUI Improve: the Files pane can display the downloaded file of HTTP task now; GUI Improve: improve the switching relationship for panes below the task list when switching between BT task and HTTP task; GUI Improve: display updating status in RSS list pane in the left of main window; GUI Improve: display the size of all files and the size of file boundary padding in tooltip of task size in BT task summary pane; GUI Improve: decode UTF8 failure info received from HTTP tracker; GUI Improve: display icons in menu of macOS edition; GUI Improve: hide notifications automatically after 5 seconds in macOS edition; GUI Bugfix: mistaken of uTP packets recv number in the Statistics pane; GUI Bugfix: the tooltip display incorrectly after the header of peer list reordered; GUI Bugfix: the size of selected files in BT task dialog is incorrect for tree list; GUI Bugfix: failed to load passport pane under Windows 11 in certain case; Core Bugfix: the mirror URL added manually not used when restart HTTP task, if the option of search for mirror is disabled; Core Bugfix: fix error handling for IPv6 UDP trackers; Core Bugfix: improve the stability of DHT modular; Core Bugfix: improve the stability of hash calculating for BitTorrent task
v1.81 [Windows] [macOS] 2021.10.1: GUI Improve: add blocklist for Torrent Collection. Blocking keywords can be added from menu of setting button in toolbar; GUI Improve: display tooltip for headers of peer list; GUI Improve: new setting in Advanced Options: task.add_to_top add new task to the top of download list; GUI Bugfix: program version definition mistake in v1.80; Core Bugfix: fix bugs in task disk space cleanup; Core Bugfix: improve stability of uTP transfer
v1.80 [Windows] [macOS] 2021.9.23: GUI Improve: new setting in Advanced Options: network.dns_query_thread_count and network.dns_query_cache_ttl; GUI Improve: new setting in Advanced Options: bittorrent.peer_dual_ip whether connect to the peer's IPv4/IPv6 address reported by itself; GUI Improve: change the default value of advanced options bittorrent.utp_after_holepunch to auto, initiate uTP directly after try UDP hole punching; GUI Improve: add Connect Pending state for HTTP/UDP/WSS trackers; GUI Improve: display connecting timeout info of UDP trackers; GUI Improve: display the number of received peers from PEX in peer list; GUI Bugfix: the protocol info in peer list is inaccurate sometimes; GUI Bugfix: mistake in help info of NAT type detect dialog; Core Improve: query DNS using multiple threads; Core Improve: support binding IP address for UDP transfer; Core Improve: filter invalid peer IP returned from Tracker; Core Improve: fix reconnect issue of second request packet to UDP tracker; Core Improve: support implied_port parameter in DHT protocol to help improve uTP transport via NAT; Core Improve: use UDP source port instead of listening port for uTP peers when sending peer list through PEX; Core Improve: optimize the number of uTP packet resend to improve UDP hole punching; Core Improve: CPU usage of UDP transfer in graph pane includes DHT and uTP threads; Core Bugfix: improve timeout handle of hole punching; Core Bugfix: improve stability of uTP transfer; Core Bugfix: timeout process missing for stop event of WSS tracker; Core Bugfix: incoming uTP connections should be excluded for TCP listening port forwards status detection
v1.79 [Windows] [macOS] 2021.8.25: GUI Improve: add NAT type detect dialog in Tools menu; GUI Improved: support Windows 11; GUI Bugfix: cached info not cleared when detect port status again in the green light state; GUI Bugfix: can not input IPv6 address in Add Peer dialog due to the length limit; GUI Bugfix: should not display the number of Long-Term Seeds for private task in task list; Core Improve: support NAT type detection for UDP packets; Core Bugfix: should not connect to the peer's IPv4/IPv6 address reported by itself if PEX disabled for the task; Core Bugfix: handle the case of folder name contains tailing space in torrent file; Core Bugfix: handle the case of file name contains emoji characters in torrent file; Core Bugfix: improve stability of uTP transfer; Core Improve: support uTP protocol in macOS edition; Core Bugfix: message handle bug when displaying modal dialog in macOS edition; Core Bugfix: UPnP crash when Remote Download enabled in macOS edition; Core Bugfix: IPv6 TCP port not listening in macOS edition; Core Bugfix: failed to send UDP packet after change listening port in macOS edition
v1.78 [Windows] [macOS] 2021.7.27: GUI Improve: new setting in Options Dialog: enable uTP for peer connection. Disabled by default.; GUI Improve: new setting in Advanced Options: bittorrent.peer_hole_punch. Enabled by default.; GUI Improve: new setting in Advanced Options: bittorrent.utp_after_holepunch. Enabled by default.; GUI Improve: display uTP status, protocol, encryption and flags in peer list of BitTorrent tasks; GUI Improve: add uTP initiation options in Add Peer Dialog; GUI Improve: add sub menu of uTP initiation mode in context menu of peer list of BitTorrent tasks; GUI Improve: display uTP packets info in Statistics pane; GUI Improve: display piece size when auto size selected in torrent maker dialog; GUI Improve: supports Ctrl+A in tracker list of BitTorrent task and Tracker Torrent list; GUI Improve: add command in context menu of tracker list: remove all unreachable trackers; GUI Bugfix: the tracker list of Tracker Torrent list can not sort by status; GUI Bugfix: piece index in file list is incorrect for zero size files; GUI Bugfix: display app exception of Windows Firewall in Statistics pane; Core Improve: supports connecting to other BitTorrent peers using uTP protocol; Core Improve: supports UDP hole punch via other BitTorrent peers to establish uTP connections; Core Improve: prevent Sonic Studio 3 DLL injection, enhance program stability; Core Bugfix: the total size of Long-Tern Seeding not loaded correctly when program starts
v1.77 [Windows] [macOS] 2021.5.3: GUI Improve: add file list to the bottom of torrent list, displaying the content of metadata; GUI Improve: display task remove info in Global Logs when Export mode enabled; GUI Improve: add memory usage details about metadata buffer size; GUI Improve: check Windows firewall rules when program starts, display fix notification if not allowed; GUI Improve: add empty input check for magnet URI dialog; GUI Bugfix: number of tasks in tag toolbar not refreshed after task added or removed; GUI Bugfix: the video preview icon not displayed for HTTP task in certain case; Core Bugfix: fix the UDP sending thread stuck after changing listening port; Core Bugfix: program may crash if torrent containing incorrect piece-alignment padding files; Core Bugfix: program may crash due to unsupported IPv6 address
v1.76 [Windows] [macOS] 2021.4.8: GUI Improve: new Tracker Torrents list displays Magnet URI fetched from tracker scrape; GUI Improve: tracker scrape URL can be added to the tracker list below tracker torrents list with the context menu; GUI Improve: add copy IP and port command to the context menu of peer list; GUI Improve: display loading progress for torrent lists; GUI Improve: display Time Received info in torrent list; GUI Improve: display memory used by torrent list in Statistics page; GUI Improve: do not switch to all task list when add new task from RSS feeds automatically; GUI Improve: display progress of folder in file list of BitTorrent task; GUI Improve: support xs parameter in magnet URI for specifying the URL of torrent file; GUI Improve: display the time left of Long-Term Seeds querying in Tracker list of BitTorrent task; GUI Improve: add "Downloads\BitComet" to default download folders for new installation; GUI Bugfix: the metadata icon not refreshed in time after metadata downloaded; GUI Bugfix: fix sort bug for title column of DHT and Tracker torrent list; GUI Bugfix: do not ask to enable DHT network when batch download torrents with torrent download URL; GUI Bugfix: the option of max item count of torrents list can not set to 100000; GUI Bugfix: when the floating window is enlarged, the ordinate display is abnormal in some cases; Core Improve: support arm64 instruction set for Apple M1 in Mac edition; Core Improve: support fetch torrent infohash list from HTTP/HTTPS tracker scrape URL or stats page; Core Improve: support fetch torrent infohash list from WS/WSS tracker with scrape action; Core Improve: improve parsing speed for JSON data; Core Improve: improve compatibility with MiniUPnPd/2.2.0; Core Improve: upgrade OpenSSL to v1.1.1k; Core Improve: enable BitTorrent encryption protocol by default; Core Bugfix: BitTorrent task can not finish downloading if torrent containing incorrect piece-alignment padding files; Core Bugfix: BitTorrent task will scan files to calculate hash after starting even if Long-Term Seeds and eMule plugin not enabled; Core Bugfix: upnp.exe invoked repeatedly in system with multiple networks; Core Bugfix: can not handle long packet of websocket; Core Bugfix: network.tcp_connection_timeout break long connection of websocket; Core Bugfix: remove .piece_part.bc! when remove tasks without deleting downloaded files
v1.75 [Windows] [macOS] 2021.2.18: GUI Improve: add Display Score History item in CometID menu; GUI Improve: display CometID score update info in Global Log pane if expert mode enabled; GUI Improve: add an icon to the download metadata item in the content menu of torrent list; GUI Improve: support any DPI scale in Windows edition; GUI Improve: support open iso files after task downloaded; GUI Improve: add UDP packets rate info in Statistics page; GUI Improve: improve text in Add Peer dialog of BitTorrent task; GUI Improve: display file count and alignment in summary pane of BitTorrent task; GUI Improve: display piece index of files in file list of BitTorrent task; GUI Improve: support WS/WSS trackers in TrackerList of Option dialog; GUI Improve: support globle hotkey for hide/unhide main window in Mac edition; GUI Improve: improve initial size of Option window in Mac edition; GUI Bugfix: grid line in download list not shown when enabled from View menu; GUI Bugfix: do not create shortcut in start menu in systems other than Windows 10; GUI Bugfix: the prompt of existing in Torrent History not displayed if re-download Magnet link after task deleted; GUI Bugfix: Windows Library folder not handled in task batch download dialog from torrent list; GUI Bugfix: display tracker return 0 peer in status column of tracker list; Core Improve: the CometID score renewal cycle is shortened from one day to no more than one hour; Core Improve: store CometID score daily history in local file; Core Improve: improve database access performance; Core Bugfix: program may crash if error occurs when loading data from database; Core Bugfix: program may crash if force quit when task properties window display in Mac edition
v1.74 [Windows] [macOS] 2021.1.15: GUI Improve: display number of Long-Term Seeds in task list; GUI Improve: add the detection and repair of improper disk boost service permissions; GUI Improve: new advanced option: bittorrent.enable_lsd; GUI Improve: add listening port, remote port and peer source columns in Peer list of BitTorrent task; GUI Improve: display LSD status info in Tracker list of BitTorrent task; GUI Improve: display LSD listening port status in Statistics page; GUI Improve: display listening port forwards status for Remote Download in Statistics page; GUI Improve: display detailed network speed info of protocol payload in Statistics page; GUI Improve: display host name of Web Seed in peer list; GUI Improve: display system notification when task download finish in Mac edition; GUI Bugfix: invalid path prompt when import/export tasks and settings in Mac edition; Core Improve: support Local Service Discovery, to search BT peers in local network using UDP multicast; Core Improve: support ws parameter in Magnet URI, to add web seed; Core Improve: upgrade OpenSSL to v1.1.1i; Core Improve: decrease CPU usage in Mac edition; Core Bugfix: fail to preview video files of huge size; Core Bugfix: fix bugs when auto add a suffix to default saving file/folder name automatically for BitTorrent task; Core Bugfix: fix bug in auto-rename when re-download HTTP tasks; Core Bugfix: When detect UDP listen port forwards status, UDP packets from local network should be ignored
v1.73 [Windows] [macOS] 2020.11.27: GUI Improve: new Replace Trackers command in context menu of task list, when multiple BitTorrent tasks selected; GUI Improve: new Update Tracker command in context menu of tracker list; GUI Improve: advanced option to enable UDP Tracker support: bittorrent.udp_tracker; GUI Improve: display TCP/UDP Upload Speed and Cache Size in Long-Term Seeding list for Export Mode; GUI Improve: support sorting items in Long-Term Seeding list for Export Mode; GUI Improve: display Total Row in Long-Term Seeding list for Export Mode; GUI Improve: auto add a suffix to default saving file/folder name automatically for BitTorrent task only when creating tasks quietly; GUI Improve: display DHT announce list in Export Mode; GUI Improve: add a new limit of MAX 100000 for torrent list; GUI Bugfix: torrent size estimation error in torrent make dialog if only single file selected; GUI Bugfix: when batch download multiple torrents with metadata in torrent list, the task will be created one by one; GUI Bugfix: the listen port setting in Remote Download option page should not be disabled if web interface disabled and APP interface enabled; GUI Bugfix: fix mistake of query file size in HTTP task properties window; GUI Bugfix: fix mistake of torrent list statusbar refresh; Core Improve: support WS/WSS Trackers (WebTorrent is unsupported yet); Core Improve: use worker thread to read files for Long-Term Seeding to reduce UI lag; Core Improve: use worker thread to read files for video file remote playback in APP; Core Improve: optimization for Long-Term Seeding with torrents containing a lot of files; Core Improve: improve torrent list loading, reduce UI lag; Core Improve: support downloading metadata directly in Add New Task window in Android APP; Core Improve: support selecting part of files in torrent to download in Android APP; Core Improve: support download files from finished task in desktop version in computer to Android APP in mobile phone; Core Improve: improve sqlite save operation, reduce disk drive activity; Core Bugfix: files are not deleted when removing tasks which haven't been started yet; Core Bugfix: avoid send duplicate UDP request to DHT nodes; Core Bugfix: cache not released after disable Long-Term Seeding; Core Bugfix: program crash when creating torrent file, if DHT disabled or pending startup; Core Bugfix: bug in auto-rename for the task with duplicated save folder when creating BitTorrent task in batch; Core Bugfix: program cannot start in Windows XP; Core Bugfix: task queue operation incorrectly if task progress dropped from 100% due to file missing detection
v1.72 [Windows] [macOS] 2020.10.21: GUI Improve: add a suffix to default saving file/folder name automatically for BitTorrent task if a file/folder has the same name exists; GUI Improve: stop time-out counting when click any option check-box in duplicate files prompt dialog for BitTorrent task; GUI Improve: auto switch unit for upload/download size in peer list of BitTorrent task; GUI Improve: display memory info in graph pane; GUI Improve: auto layout positions of legends in graph pane; GUI Improve: torrent size estimation handle the piece-alignment option in torrent make dialog; GUI Improve: remove advanced option dht.udp_sessions_threshold, add new advanced option dht.udp_send_queue_threshold; GUI Improve: display number of dropped DHT requires; GUI Improve: show CPU usage in flow graph in macOS version; GUI Bugfix: fix crash when click download eMule plugin button in Option window; GUI Bugfix: creation date in task summary not refreshed after metadata downloaded for BitTorrent task; GUI Bugfix: metadata icon in torrent list not refreshed after metadata downloaded; Core Improve: use worker thread for Long-Term Seeding to reduce UI lag; Core Improve: add support of Long-Term Seeding for files smaller than 1MB; Core Improve: when UDP send queue threshold of DHT reached, incoming DHT requires are dropped; Core Improve: able to identify Shareaza client; Core Bugfix: task queue operation incorrectly if choose seeding directly using exist files after opening torrent; Core Bugfix: if the DHT network startup delay is enabled, the auto-started tasks will not announce to DHT any more; Core Bugfix: crash when DNS querying
v1.71 [Windows] [macOS] 2020.9.7: GUI Improve: add new advanced option: ui.copy_magnet_with_tracker; GUI Improve: add new advanced option: dht.startup_delay_sec; GUI Improve: add new advanced option: dht.udp_sessions_threshold; GUI Improve: add Long-Term Seeding list to left channel list when expert_mode enabled; GUI Improve: display number of files for Long-Term Seeding in flow graph; GUI Improve: display number of DHT nodes and sessions by type in flow graph; GUI Improve: display CPU usage in flow graph; GUI Improve: display flow graph pane under torrent list also; GUI Improve: display UDP sending queue length for separate category in Statistics pane; GUI Improve: display number of DNS cache in Statistics pane; GUI Improve: tracker list supports sorting; GUI Improve: do not switch to download list after add new BitTorrent task from RSS page; GUI Improve: display banned peers of BitTorrent task in separate group; GUI Bugfix: binding IP address in advanced option can not be modified; GUI Bugfix: update time of RSS feeds not changed after manual refresh; GUI Bugfix: tooltip displayed incorrectly when the column order of peer list adjusted; Core Improve: UDP sending queue changed to multiple queues; Core Improve: prevent Sonic Studio 3 DLL injection, enhance program stability; Core Improve: BitTorrent task start Long-Term Seeding automatically if become 100% completed after hash checking; Core Improve: add cache for DNS query; Core Improve: UDP Tracker connect will retry later if length of sending queue reached limit; Core Improve: reduce unnecessary DHT transmission if reached the threshold of UDP sessions; Core Improve: increase the priority of connection for passport login; Core Bugfix: empty folder left after moving downloaded files for finished task
v1.70 [Windows] [macOS] 2020.8.9: GUI Improve: add option to start seeding after generating torrent file; GUI Improve: advanced option system.show_debug_info renamed to system.enable_expert_mode; GUI Improve: add DHT network node list to left channel list when expert_mode enabled; GUI Improve: add flow graph for download speed, upload speed, DHT transfer; GUI Improve: display location code if no location image in peer list; GUI Improve: Add HTTP download in batch window support paste HTTP URL list; GUI Improve: "Remember my settings" in Auto Shutdown menu changed to "Remember Shutdown Condition"; GUI Bugfix: number of Torrent History not refreshed after generating torrent file; GUI Bugfix: peer download progress not displayed in peer list; GUI Bugfix: IP location icon display bug when using 150% DPI; GUI Bugfix: download speed display bug in floating window; GUI Bugfix: binding IP address in advanced option can not be set to unassigned; Core Bugfix: data save failure due to zero-size file in torrent; Core Bugfix: program may crash when downloading pieces containing file boundary in v1.69; Core Bugfix: initial seeding option can not be saved due to asynchronous modification operation of BT task properties (v1.68 - 1.69)
v1.69 [Windows] [macOS] 2020.7.8: GUI Improve: display Mobile APP traffic in the info-tips of upload size and upload speed in task summary pane; GUI Improve: display detailed failure info of download torrent in BT task log pane; GUI Improve: display IP location in peer list of BitTorrent task; GUI Bugfix: the main window should not be restored by relaunch program if entered lock mode while the main window minimized; GUI Bugfix: can't change the default download directory for a task tag in the Option window; GUI Bugfix: handle the situation of LAN IP is the same with WAN IP in Remote Download page of Options window; Core Improve: improve error handling after piece hash check failure of BT task; Core Improve: part of the file operation is moved to the worker thread to reduce UI freeze; Core Improve: improve torrent share data processing and reduce UI freeze; Core Improve: supports brotli compress for HTTP Tracker, torrent download and visit RSS feeds; Core Improve: apply advanced option http.user_agent to all HTTP connections besides HTTP file download; Core Improve: remove HTTP request header: Pragma/Cache-Control: no-cache; Core Bugfix: occasionally crash when starting BT task asynchronously
v1.68.1 [macOS] 2020.6.28: GUI Bugfix: disk space display error in task properties dialog in Mac edition; GUI Bugfix: check box display error in file list of BT tasks in Mac edition
v1.68 [Windows] [macOS] 2020.6.15: GUI Improve: add Bind App button for BitComet Android edition in toolbar and tools menu; GUI Improve: add enable BitComet App option in Remote Download page of Options window; GUI Improve: add Bind App button in Remote Download page of Options window; GUI Improve: add Devices button in Remote Download page of Options window; GUI Improve: add force HTTPS option in Remote Download page of Options window; GUI Improve: display Remote Download info in Statistics pane; GUI Improve: allow piece alignment option when creating private torrent file; GUI Improve: new advanced option: system.process_io_priority; GUI Improve: display long-term seeds info in Tracker list; GUI Improve: add auto refresh option in torrent list toolbar; GUI Improve: add refresh button in torrent list toolbar; GUI Improve: keep selection state of focused item in torrent list when auto refresh; GUI Improve: filter RSS torrent list by RSS feed name; GUI Improve: new option in RSS torrent list: auto download meta-data; GUI Improve: new option in torrent collect list: auto download meta-data; GUI Improve: keep multiple selection in torrent list when auto-refresh disabled; GUI Improve: new column in torrent list: has metadata; GUI Improve: display Long-Term Seeding info in Summary pane when system.show_debug_info turned on; GUI Improve: remember show/hide state of task tags toolbar when program restart; GUI Improve: display UDP transfer info in Statistics pane; GUI Improve: display DNS failure info of UDP transfer in Statistics pane; GUI Bugfix: sort bug for first column of torrent list; GUI Bugfix: the downloaded icon in torrent list does not refresh in time; GUI Bugfix: Option window may display incorrectly when opened for second time in Mac edition; GUI Bugfix: program may crash when drag and drop multiple HTTP links to main windows or floating window; Core Improve: selecting files to download for BitTorrent task changes to asynchronous operation, to reduce the UI lag; Core Improve: clean up unfinished files for BitTorrent task changes to asynchronous operation, to reduce the UI lag; Core Improve: when sharing torrents in Torrent Exchange, give higher priority to the torrents whose content have been downloaded; Core Improve: assign padding attribute to padding files according to BEP47 when creating torrent file; Core Improve: handling padding file attribute when opening torrent file; Core Improve: enhance security for Remote Download; Core Improve: supports view task info from BitComet Android edition; Core Improve: supports add, start, stop task from BitComet Android edition; Core Improve: supports play completed mp4, mkv video files from BitComet Android edition; Core Improve: do not retry within 1 minute after DNS failure for UDP transfer; Core Bugfix: the piece containing file boundary can not be downloaded in individual cases
v1.67 [Windows] [macOS] 2020.5.6: GUI Improve: new command in context menu of task list: search online for the task name; GUI Improve: new global option: save the torrent file to download folder; GUI Improve: display the number of DHT torrents with metadata in left channel pane if show torrents with metadata option enabled; GUI Improve: reduce UI lag of BitTorrent task properties dialog when use network folder as download folder; GUI Improve: new command in context menu of torrent list: search online for the torrent name; GUI Improve: new advanced option: system.check_bcagent, disable check OCX control status for browser extensions at startup; GUI Improve: new settings in tasks page of option window: start queued task if the download speed of slowest task is lower than; GUI Improve: display UPNP port mapping info in global log; GUI Bugfix: the upload limit can not be set to 1, 2, 3...9MB/s in Option dialog; GUI Bugfix: magnet URI tasks not displayed in Uncompleted task list after program restart; Core Improve: the format of data file of torrent history list changed from xml to sqlite, conversation will be performed automatically when program launch; Core Improve: improve algorithm of removing items in torrent list, reduce UI lag; Core Improve: increase sorting speed for snapshot and post column in torrent list; Core Improve: improve algorithm of long-term seeding, reduce UI lag; Core Improve: starting BT task changes to asynchronous operation, to reduce the UI lag; Core Improve: reduce process time for stopping BT task; Core Improve: reduce process time for removing BT tasks without deleting downloaded files; Core Improve: reduce UI lag due to long-term seeding; Core Bugfix: BT task may stop unexpectedly due to file not found if yellow blocks appear in piece map; Core Bugfix: program may crash when sorting torrent list; Core Bugfix: disk boost service not utilized when allocate disk space before downloading option disabled; Core Bugfix: metadata download task not removed when removing items in torrent list
v1.66 [Windows] [macOS] 2020.4.13: GUI Improve: improve icons in toolbar and download list for HiDPI display; GUI Improve: add settings button in toolbar of torrent list; GUI Improve: new option for DHT torrents: Only show torrents with metadata; GUI Improve: add Feed Name in RSS torrent list; GUI Improve: display number of piece in torrent maker dialog; GUI Improve: display metadata downloading info in Statistics pane; GUI Improve: do not display listen port of peer if unknown for BT peers; GUI Improve: "Preview Download Mode" renamed to "Sequential Download Mode" in context menu of BT task; GUI Improve: add Compact Database command in settings menu of torrent list; GUI Improve: new advanced option: bittorrent.dht_torrent_refresh_interval, 5 sec as default to decrease disk activity time; GUI Improve: new advanced option: system.compact_memory_interval; GUI Improve: display configuration file folder in Global Log pane; GUI Improve: display Long-Term Seeding status in Statistics Pane; GUI Improve: add copy command to context menu of settings list in advanced option page; GUI Improve: improve HiDPI support for Batch download dialog; GUI Improve: new option in Proxy setting page: DNS query using proxy server; GUI Improve: add unit choice for Speed limit in Option dialog; GUI Improve: support add batch-download by drag and drop multiple URL links to floating window or main window; GUI Improve: support add batch-download by clipboard monitor; GUI Improve: new advanced option: bittorrent.hash_check_for_ltseed; GUI Improve: add memory usage details about process heap size and disk write buffer size; GUI Improve: new settings in advanced option page to select IP address to bind to when initiate a connection; GUI Improve: show pending DNS number in Statistics pane; GUI Bugfix: the number of torrents in the left channel list is not refreshed in time; GUI Bugfix: sort bug for first column of Torrent History list; GUI Bugfix: task summary panel text alignment; GUI Bugfix: level progress display error when progress is 0% in the lower left corner; GUI Bugfix: incorrect configuration file folder used in certain case; GUI Bugfix: UI lag when select all by Ctrl+A in torrent list; Core Improve: DHT Tracker use worker thread to reduce the UI lag; Core Improve: support initiate a connection using preferred network adapter if multiple network adapters exist in system; Core Improve: support IPv6 connection through SOCKS5 proxy server; Core Improve: support UTF8 BOM when improve URL list from text file in Batch download dialog; Core Improve: support extract URL links containing Chinese characters from html page segment dropped to BitComet from web page; Core Improve: improve memory allocation, decrease memory usage for UDP buffer and log buffer; Core Improve: optimize UDP packet sending efficiency，default value of network.max_udp_pkt_per_sec changed to 1000 from 500; Core Improve: avoid program crash caused by IE component damage; Core Improve: improve Preview download mode for BT task; Core Improve: reduce memory usage when downloading metadata for DHT torrent list; Core Bugfix: the global option "allocation disk space before download" works even when disabled; Core Bugfix: empty files should not be created when performs hash-check; Core Bugfix: connection error retry issue when download from long-term seed; Core Bugfix: fix speed limit deviation; Core Bugfix: "Sequential Download Mode" does not work if "Optimize download strategy for preview" disabled in Option dialog
v1.65 [Windows] [macOS] 2020.3.17: GUI Improve: Display left time in torrent making dialog; GUI Improve: add more items to backup in Import/Export dialog from File menu; GUI Improve: display torrent creation time and RSS article publication time in Summary page of torrent list separately; GUI Improve: the publish time in torrent list changed from torrent creation time to RSS article publication time; GUI Improve: add new commands to context menu of RSS list: Copy title; GUI Improve: the publish time in torrent list can be updated by click Reload command in context menu of RSS torrent node in Channel list; GUI Improve: improve port mapping error message; GUI Improve: the start time of task renamed to added time; GUI Improve: LT Seed number in file list of BT task changed to "connected/total"; GUI Improve: new advanced option to set HTTP retry max number and interval for downloading torrent in BT task; GUI Improve: new advanced option: network.tcp_connection_timeout; GUI Improve: new advanced option: bittorrent.max_connections_per_ltseed; GUI Improve: default setting of UDP packets sent per second changed from 100 to 500 in advanced option page; GUI Improve: display task logs about downloading torrent file from HTTP link for BT task; GUI Improve: add memory usage details in Statistics pane; GUI Bugfix: task delete button in toolbar should not be grayed out when task is running; Core Improve: support import and export Torrent History, Torrent Exchange, RSS Torrents, DHT Torrents via backup file; Core Improve: improve DNS resolution for UDP packet to prevent sending congestion; Core Improve: add error retry for BT task when downloading torrent file from HTTP link; Core Improve: add TCP connecting timeout for automatic disconnection; Core Bugfix: after one file downloaded from a LT Seed, no requests for downloading other file are sent; Core Bugfix: out of memory due to huge number of peer requests to running BT task; Core Bugfix: while proxy server enabled, the program may crash when exiting; Core Bugfix: the max TCP connection setting should be cons considered when initiating a long-term download connection; Core Bugfix: fix improper operation in executable file name safety checking
v1.64 [Windows] 2020.1.15: GUI Improve: add new advanced option: Use toast notifications in action center under Windows 10 (Need to create shortcut in start menu); GUI Improve: the max connection number for HTTP download task changed from 20 to 200 in HTTP task properties window; GUI Improve: the max default connection number for HTTP download task changed from 20 to 200 in option window; GUI Improve: show notification when the paging file is too small for memory allocation; GUI Improve: add info-tip for peer count, health and share ratio column in task download list; GUI Improve: improve display for HiDPI; GUI Bugfix: the display name parameter in the magnetic link caused the default save name of the downloaded file to be incorrect; GUI Bugfix: issues on sorting torrent list by snapshot or comments; GUI Bugfix: the speed graph not cleared after perform disk cleanup for HTTP task; GUI Bugfix: the queuing state icon not displayed if the task is in error state; GUI Bugfix: the function of sorting by task state not working for queuing tasks; Core Improve: enhanced the ability of HTTP download tasks to detect server support for download resume; Core Improve: reduce memory usage for torrent metadata download; Core Improve: improve video file snapshot, support thumbnail, decrease loading time; Core Improve: disable extra disk writing verify to decrease disk usage; Core Bugfix: if auto file moving launched after hash check when BitTorrent download finished, the files been moved will bot be removed; Core Bugfix: HTTP download should stop immediately after failure of creating file; Core Bugfix: program may crash at exit
v1.63 [Windows] [macOS] 2019.12.20: GUI Improve: new RSS Torrents list in Torrent Exchange, to collect torrent info from RSS feeds; GUI Improve: new DHT Torrents list in Torrent Exchange, to collect torrent info in peer request from DHT network; GUI Improve: add Download Metadata command to context menu of torrent list, to obtain torrent meta-data without creating download task; GUI Improve: add Logs pane to torrent list, to display logs when obtaining torrent meta-data; GUI Improve: decrease displaying time of waiting state when loading web page of task comments and snapshots; GUI Improve: new settings in Proxy option page: do not use proxy for long-term seeding and port forward detection; GUI Improve: display RSS update logs when advanced option system.show_debug_info enabled; GUI Improve: new option in context menu of DHT torrents in left channel pane: auto download meta-data; GUI Improve: new advanced options: Max number of concurrent downloading meta-data, Timeout seconds of downloading meta-data; GUI Bugfix: the default connection number in HTTP batch download window changed from 1 to the setting value in Option window; GUI Bugfix: the speed graph not cleared after perform disk cleanup for BitTorrent task; GUI Bugfix: when click the blank area in piece map scroll bar out of the thumb, page up or page down not triggered.; GUI Bugfix: the status bar of main window flickers when refresh; Core Improve: improve identification code of BitTorrent client name and version; Core Improve: do not detect IPv6 port forward status if global IPv6 address not found in system; Core Bugfix: fix moving operations of configuration files when switch use_app_data advanced option; Core Bugfix: program may crash when force stop tasks in stopping state; Core Bugfix: the option of clear Torrent Collection list at program exit does not work; Core Bugfix: the passkey parameter in tracker URL for private torrent should not be removed for non-MagnetURI torrents received from RSS feed; Core Bugfix: if no data received from RSS feed, the reconnection will not be preformed in certain case; Core Bugfix: if the torrent turned out private after meta-data received, no trackers should be added automatically from trackers-list
v1.62 [Windows] 2019.11.26: GUI Improve: a new option to seed using existing files when create task by torrent file, check piece hash until uploading the piece; GUI Improve: improve refresh algorithm of piece map to decrease CPU usage; GUI Improve: display a piece in yellow if the piece is unchecked in the piece map pane of BitTorrent task; GUI Improve: improve display refreshing code of torrent share list, reduce the UI lag when display large amounts of torrents; GUI Improve: a new prompt to choose download one by one or in batches when select multiple magnet links in torrent share list; GUI Improve: add tooltip to display peer_id when mouse hover on client name of peer list; GUI Improve: the default allowed max size of torrent file changed from 10MB to 20MB, and a new advanced option added: bittorrent.max_torrent_size_mb; GUI Improve: boss key renamed to lock / unlock main window hot-key. password will be needed when unlock if startup password is set.; GUI Improve: new advanced option: bittorrent.anti_leech_banned_peer_ids; GUI Improve: new advanced option: bittorrent.anti_leech_private_torrent, disabled by default; GUI Improve: show notification when out of memory; GUI Improve: Task disk space cleanup can only be invoked when task stopped; Core Improve: BT stop changes to asynchronous operation with new task Stopping state, to reduce the UI lag when stopping tasks; Core Improve: improve processing flow to reduce the UI lag when task finishes downloading; Core Improve: improve processing flow to reduce the UI lag when deleting running tasks; Core Improve: discard cache data in running BitTorrent tasks when quit BitComet to reduce the UI lag; Core Improve: improve processing flow of task start to reduce the UI lag; Core Improve: improve processing flow of task progress auto save to reduce the UI lag; Core Improve: the format of data file of torrent share list changed from xml to sqlite, conversation will be performed automatically when program launch; Core Improve: reduce the memory consume for loading torrent share list, to avoid program crash due to large amounts of torrents; Core Improve: use worker thread to save data file of torrent share list incrementally, to avoid UI lag caused by saving data file at program exit; Core Improve: decrease CPU usage when uploading in high speed; Core Improve: increase the max allowed length of request queue for BitTorrent task; Core Improve: update BitTorrent client identification code for Tixati; Core Improve: support retrieve peer client name and version from extension protocol, on the basis of the identification from peer_id; Core Improve: auto fix mistaken creation date format in torrent file; Core Bugfix: when completed task list selected in left pane, Magnet tasks downloading meta data should not be displayed; Core Bugfix: fix data error from uploading disk cache in rare cases
v1.61 [Windows] 2019.11.4: GUI Improve: improve filter for auto torrent download from RSS feed; GUI Improve: do not display unknown as name for tasks created from HTTP URL of torrent file; GUI Improve: new command in context menu of RSS article list: copy torrent link; GUI Improve: show tooltip when mouse hover on status column of peer list; GUI Improve: check disk boost service when program starts, display fix notification if not installed; GUI Improve: task finish popup changed to toast notification of Action Center in Windows 10; GUI Improve: auto update interval of RSS feed changed to the shorter one of user setting and feed setting; GUI Improve: add new setting bittorrent.anti_leech_banned_ports in Advanced page of Options window; GUI Improve: The option window automatically adjusts the window size according to the minimum size of the page when switching pages; GUI Improve: add search options box in Advanced page of Options window; GUI Bugfix: the setting of max number of RSS article works incorrectly; GUI Bugfix: refresh task properties dialog after meta-data downloaded right away; GUI Bugfix: fix display problem of floating window with HiDPI scale; GUI Bugfix: remove obsoleted option: display task properties dialog after meta-data downloaded for Magnet link; GUI Bugfix: publisher info not displayed in BitTorrent task properties dialog; GUI Bugfix: copy RSS feed URL will get RSS feed web-page URL; Core Improve: Improve compatibility with XML file formats returned by RSS feeds; Core Improve: for the option that start a new task from waiting queue when total download speed lower than setting value, also stop a slowest task at the same time; Core Improve: switch to IE11 render mode for RSS web-page in Window 10; Core Bugfix: The Magnet link task addition time is changed from the time of torrent file downloaded to the time of task created.; Core Bugfix: problem about the auto refresh interval for RSS feeds
v1.60 [Windows] 2019.10.17: GUI Improve: add new command to File menu: add torrents from RSS feed; GUI Improve: add RSS page in Option window, to configure RSS feed auto refresh and RSS torrent auto download; GUI Improve: new setting in RSS page of Option window: add tag to task using feed title when auto download torrent from RSS feed; GUI Improve: new setting in RSS page of Option window: pause download when auto download torrent from RSS feed; GUI Improve: new setting in RSS page of Option window: filters for RSS torrent auto download; GUI Improve: add new commands to context menu of RSS list: Copy RSS feed URL, Open page in Browser; GUI Improve: able to download torrents using multiple-selection in RSS article list; GUI Improve: add toolbar to web page pane of RSS article; GUI Improve: new column in task list: number of task files; GUI Improve: improve display speed of opening Option windows; GUI Improve: support copy text in multiple lines of Statistics pane; Core Improve: add RSS feed auto refresh and RSS torrent auto download function; Core Improve: display corresponding RSS article title in task log when add torrent from RSS feed; Core Improve: improve disk reading cache for BitTorrent uploading, decrease UI lag; Core Bugfix: fix memory leakage when connecting to trackers using HTTPS protocol; Core Bugfix: fix bug in task merging when one task downloaded a torrent from HTTP having the same infohash as another task
v1.59 [Windows] [macOS] 2019.9.17: GUI Improved: revert task remove window, add Cleanup command to task context menu; GUI Improved: improve Torrent Share list refresh; GUI Improved: the max value of advanced setting network.max_connecting_connections changed from 1000 to 10000; GUI Improved: add advanced option log.tracker_limit to set the max number of logs for tracker; GUI Improved: add advanced option log.task_limit to set the max number of logs for task; GUI Improved: add Clear Log command to context menu of Tracker list, available when system.show_debug_info enabled; GUI Improved: add Clear Log command to context menu of task log list, available when system.show_debug_info enabled; GUI Improved: display number of pending TCP connections in Statistics pane; GUI Improved: add indicator for private torrent in summary pane of BitTorrent task; Core Improve: improve memory allocation strategy, decrease memory fragment; Core Improve: decrease interval of creating new TCP connections, and increase network throughput; Core Improve: remove passkey parameter from tracker URL for private torrent received from Magnet Link; Core Improve: active Long-Term seeding after task downloading finished immediately; Core Improve: do not retry when failed to send STOP action to tracker; Core Bugfix: improve peer connection request algorithm, avoid new added peers not been connected for a long time
v1.58 [Windows] [macOS] 2019.7.6: GUI Improved: support 32MB piece size when creating torrent file, and show estimated size of torrent; GUI Improved: add fit column size command in context menu of list view header; GUI Improved: add 2 new options in task remove window: delete unfinished download files only, delete all downloaded files; GUI Improved: display torrent creator info in task summary page; GUI Improved: improve floating window display for HiDPI; GUI Improved: allow up to 10 new task windows to be displayed simultaneously; GUI Improved: display flag for registered BitComet users of IPv6 in peers list of BitTorrent task; GUI Improved: display tracker returned leechers amount in tracker list of BitTorrent task; GUI Bugfix: display issue of item group fold/unfold in Statistics pane; GUI Bugfix: max upload rate per BitTorrent task in Option window does not take effect immediately when changed; GUI Bugfix: Long-Term seeding upload speed not displayed in tooltip of BitTorrent task summary pane when task stopped; Core Improve: improve peer connection request algorithm: assign high priority for new added peers, and cleanup dead peers with failures; Core Improve: enable Long-Term seeding immediately after new torrent created; Core Improve: max allowed connection interval of tracker changed to 120 minutes; Core Improve: add advanced option: bittorrent.save_connected_peers_only; Core Bugfix: when select part of files in torrent to download, the left size sent to tracker should include all uncompleted files; Core Bugfix: the upload, download size in first announce to tracker is incorrect when task restart after stop; Core Bugfix: announcement not sent to tracker when task restart immediately after stop; Core Bugfix: no DHT nodes should be written into torrent when DHT Network option unselected in torrent maker window; Core Bugfix: connection error after first announce to HTTPS tracker; Core Bugfix: HTTP download fails when URL contains IPv6 address host; Core Bugfix: improve stability of Long-Term Seeding disk cache
v1.57 [Windows] [macOS] 2019.5.8: GUI Improved: choose only KB/s or MB/s as speed unit automatically, excluding B/s; GUI Improved: do not allow reentrancy of new task creating window to avoid stack overflow; GUI Bugfix: program may crash at exit triggered by Windows shutdown/restart/logoff; Core Improve: support TLS v1.3 for HTTPS; Core Improve: support Server Name Indication for multiple domains hosted HTTPS sever; Core Bugfix: Long-Term Seeding does not work for certain torrents
v1.56.0 [macOS] 2019.3.20: Core Improve: synchronize with Windows version
v1.56 [Windows] 2019.3.13: GUI Bugfix: mistake in UI translations; Core Bugfix: disk cache setting for Long-Term Seeding does not take effect; Core Bugfix: improve stability of Long-Term Seeding; Core Bugfix: Long-Term Seeding does not work in pure IPv6 network; Core Bugfix: after all trackers in private torrent been replaced, no tracker will be connected when task downloading
v1.55 [Windows] 2019.1.14: GUI Improved: add new task categories "Uncompleted" and more in left Channel pane, which can be switch by context menu; GUI Improved: add RSS feeds in left Channel pane; GUI Improved: Statistics pane displays listening port status of IPv4, IPv6, TCP, UDP separately; GUI Improved: Trackers pane displays peer number from PEX; GUI Improved: Peers pane displays downloaded and uploaded size of disconnected peers; GUI Improved: new Long-Term Seeding disk cache setting in Option window; GUI Improved: Statistics pane displays disk cache info of BitTorrent transfer, HTTP download and Long-Term Seeding separately; GUI Improved: choose KB/s or MB/s as speed unit automatically; GUI Improved: when sort task by time, display tasks of unknown time as earliest; GUI Improved: identify video file type of .webm and .ogv; GUI Bugfix: toolbar display incorrectly after change Windows UI theme; GUI Bugfix: tooltip of task summary will show up even when window not in foreground; GUI Bugfix: occasionally crash when display popup window of task download progress; Core Improve: support Long-Term Seeding in IPv6 network; Core Improve: optimize the disk cache for Long-Term Seeding; Core Improve: add UDP incoming status detect for listening port; Core Improve: report IPv4, IPv6 address to other peer in dual-stack network, to establish double way connections; Core Bugfix: decrease UI lag when executable file download finished; Core Bugfix: too many tracker connections when multiple BitTorrent tasks download at the same time; Core Bugfix: improve stability of Long-Term Seeding
v1.54.0 [macOS] 2018.12.12: GUI Improved: update translations; Core Improve: synchronize with Windows version
v1.54 [Windows] 2018.12.6: GUI Improved: add log out action when all task finished; GUI Improved: increase disk cache max limit for 64 bits system; GUI Improved: add option to disable peer exchange globally in advanced page of Option window; GUI Improved: update translations; GUI Bugfix: crash when remove task if file list pane tab reordered; GUI Bugfix: should not use index.html as default file name if no name found in Magnet URI dragged from web page; Core Improve: decrease disk cache size when page file insufficient; Core Bugfix: incoming connection should be disconnected immediately when invalid encryption BitTorrent protocol detected
v1.53.11 [macOS] 2018.11.25: Core Bugfix: program crash occasionally
v1.53.10 [macOS] 2018.11.23: Core Improve: enhance crash report ability
v1.53.9 [macOS] 2018.11.22: GUI Bugfix: minor UI bugs
v1.53.8 [macOS] 2018.11.16: GUI Bugfix: support UPnP NAT port mapping; GUI Bugfix: minor UI bugs
v1.53.7 [macOS] 2018.11.13: GUI Bugfix: the scroll bar in task list not shown; GUI Bugfix: the tooltip for detailed info in summary pane not shown
v1.53.6 [macOS] 2018.11.12: GUI Bugfix: the Auto Shutdown functions in Tools menu does not work
v1.53.5 [macOS] 2018.11.6: GUI Bugfix: the option of prevent system from sleep when task running does not work
v1.53.4 [macOS] 2018.11.5: GUI Bugfix: program may crash when input numbers text field; GUI Bugfix: Piece Map displays empty pane
v1.53.3 [macOS] 2018.11.4: GUI Bugfix: program may crash when displaying tooltip; Core Bugfix: program may crash when detecting listening port status
v1.53.2 [macOS] 2018.11.3: GUI Bugfix: crash when change proxy settings in options window
v1.53.1 [macOS] 2018.11.2: GUI Improved: add update check for mac version; GUI Bugfix: crash when change connection settings in options window
v1.53.0 [macOS] 2018.11.1: first published version for macOS
v1.53 [Windows] 2018.10.26: GUI Improved: support add BitTorrent task using 32-byte Base32 encoded infohash of magnet link directly in "Open torrent from URL" dialog; GUI Improved: increase maximum text length of input box in "Open torrent from URL" dialog; GUI Improved: add resize ability to "Open torrent from URL" dialog; GUI Improved: improve support for high-DPI monitor of statistic information dialog of multiple tasks; GUI Changed: remove VIP Acceleration page from Channels in left pane; GUI Changed: remove VIP Acceleration tab from BitTorrent task properties dialog; GUI Bugfix: dialog display will be deferred while high-speed downloading; Core Improve: the max value of network.max_connecting_connections in advanced options changed from 200 to 1000; Core Bugfix: the default value of network.start_connect_interval_ms in advanced options changed from 200 to 100; Core Improve: support IPv6 address when detecting listening port status; Core Changed: remove VIP Acceleration and Anonymous Download for BitTorrent task
v1.52 2018.7.18: GUI Improved: HTTP(S)/FTP download support IPv6 URL link; GUI Improved: Peer list and Tracker list support display IPv6 address; GUI Improved: IPv6 address of LAN/WAN displayed in Statistics pane; GUI Improved: DHT network node info of IPv4 and IPv6 displayed in Statistics pane; GUI Improved: add SHA256 checksum verification to HTTP task properties dialog; GUI Improved: add DNS resolve error info for UDP Tracker; GUI Improved: upgrade UI text translation website https://bbcomet.com/projects/bitcomet/; GUI Bugfix: unable to add HTTPS URL as Web Seed in torrent file maker window; GUI Bugfix: errors when displaying new version upgrade window; Core Improve: support IPv6 network (Windows XP SP1 or later required); Core Improve: support IPv6 HTTP Tracker; Core Improve: support IPv6 UDP Tracker; Core Improve: support IPv6 DHT Tracker; Core Improve: allow upload pieces containing file boundary when part of files in torrent selected for download; Core Bugfix: data not saved into piece_part file correctly in a few particular situations when part of files in torrent selected for download
v1.51 2018.6.12: GUI Improved: new settings in Tracker page of option window, automatically add trackers when start BitTorrent download; GUI Improved: new settings in Tracker page of option window, automatically update trackers list every day; GUI Improved: increase max value for global rate limit, task rate limit and scheduler rate limit from 9999kB/s to 100MB/s; GUI Improved: improve support for high-DPI monitor; GUI Bugfix: unsupport download torrent file from HTTPS link; GUI Bugfix: remove P2PCache function from Advanced page of Option window, which was out-of-service for a long time; Core Improve: improve download speed stability of BitTorrent downloading; Core Improve: increase max download speed of single connection of BitTorrent downloading; Core Improve: refine Crash Report program; Core Bugfix: fix problems when exit program while high-speed downloading
v1.50 2018.5.3: GUI Improved: the file list in BitTorrent task properties dialog can switch between simple list and tree list; GUI Bugfix: background color of URL input box displayed incorrectly when create new HTTP task; GUI Bugfix: speed graph displayed incorrectly when high speed downloading; Core Improve: refine Crash Report program; Core Improve: update BitTorrent client identification code; Core Bugfix: certain file name displayed incorrectly in BitTorrent task
v1.49 2018.2.6: GUI Improved: improve context menu of Torrent History list, Torrent Share list and Torrent Collection list; GUI Improved: add Transmission to allowed client list in Option window; GUI Improved: improve support for high-DPI monitor; GUI Bugfix: order disordered when collapse or expand sorted file list of BitTorrent task; GUI Bugfix: when open directory of a file in sub-directory from the file list of BitTorrent task, incorrect directory opened; Core Improve: update BitTorrent client identification code; Core Improve: decrease piece_part file size for BitTorrent task with only part files selected to download

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