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libtorrent Changelog

What's new in libtorrent 1.0.5

May 13, 2015
  • improve ip_voter to avoid flapping
  • fixed bug when max_peerlist_size was set to 0
  • fix issues with missing exported symbols when building dll
  • fix division by zero bug in edge case while connecting peers

New in libtorrent 1.0.4 (Mar 23, 2015)

  • fix bug in python binding for file_progress on torrents with no metadata
  • fix assert when removing a connected web seed
  • fix bug in tracker timeout logic
  • switch UPnP post back to HTTP 1.1
  • support conditional DHT get
  • OpenSSL build fixes
  • fix DHT scrape bug

New in libtorrent 1.0.3 (Dec 29, 2014)

  • python binding build fix for boost-1.57.0
  • add --enable-export-all option to configure script, to export all symbols from libtorrent
  • fix if_nametoindex build error on windows
  • handle overlong utf-8 sequences
  • fix link order bug in makefile for python binding
  • fix bug in interest calculation, causing premature disconnects
  • tweak flag_override_resume_data semantics to make more sense (breaks backwards compatibility of edge-cases)
  • improve DHT bootstrapping and periodic refresh
  • improve DHT maintanence performance (by pinging instead of full lookups)
  • fix bug in DHT routing table node-id prefix optimization
  • fix incorrect behavior of flag_use_resume_save_path
  • fix protocol race-condition in super seeding mode
  • support read-only DHT nodes
  • remove unused partial hash DHT lookups
  • remove potentially privacy leaking extension (non-anonymous mode)
  • peer-id connection ordering fix in anonymous mode
  • mingw fixes

New in libtorrent 1.0.2 (Sep 10, 2014)

  • added missing force_proxy to python binding
  • anonymous_mode defaults to false
  • make DHT DOS detection more forgiving to bursts
  • support IPv6 multicast in local service discovery
  • simplify CAS function in DHT put
  • support IPv6 traffic class (via the TOS setting)
  • made uTP re-enter slow-start after time-out
  • fixed uTP upload performance issue
  • fix missing support for DHT put salt

New in libtorrent 1.0.1 (Aug 4, 2014)

  • fix alignment issue in bitfield
  • improved error handling of gzip
  • fixed crash when web seeds redirect
  • fix compiler warnings

New in libtorrent 1.0.0 (Jul 3, 2014)

  • fix bugs in convert_to/from_native() on windows
  • fix support for web servers not supporting keepalive
  • support storing save_path in resume data
  • don't use full allocation on network drives (on windows)
  • added clear_piece_deadlines() to remove all piece deadlines
  • improve queuing logic of inactive torrents (dont_count_slow_torrents)
  • expose optimistic unchoke logic to plugins
  • fix issue with large UDP packets on windows
  • remove set_ratio() feature
  • improve piece_deadline/streaming
  • honor pieces with priority 7 in sequential download mode
  • simplified building python bindings
  • make ignore_non_routers more forgiving in the case there are no UPnP devices at a known router. Should improve UPnP compatibility.
  • include reason in peer_blocked_alert
  • support magnet links wrapped in .torrent files
  • rate limiter optimization
  • rate limiter overflow fix (for very high limits)
  • non-auto-managed torrents no longer count against the torrent limits
  • handle DHT error responses correctly
  • allow force_announce to only affect a single tracker
  • add moving_storage field to torrent_status
  • expose UPnP and NAT-PMP mapping in session object
  • DHT refactoring and support for storing arbitrary data with put and get
  • support building on android
  • improved support for web seeds that don't support keep-alive
  • improve DHT routing table to return better nodes (lower RTT and closer to target)
  • don't use pointers to resume_data and file_priorities in add_torrent_params
  • allow moving files to absolute paths, out of the download directory
  • make move_storage more generic to allow both overwriting files as well as taking existing ones
  • fix choking issue at high upload rates
  • optimized rate limiter
  • make disk cache pool allocator configurable
  • fix library ABI to not depend on logging being enabled
  • use hex encoding instead of base32 in create_magnet_uri
  • include name, save_path and torrent_file in torrent_status, for improved performance
  • separate anonymous mode and force-proxy mode, and tighten it up a bit
  • add per-tracker scrape information to announce_entry
  • report errors in read_piece_alert
  • DHT memory optimization
  • improve DHT lookup speed
  • improve support for windows XP and earlier
  • introduce global connection priority for improved swarm performance
  • make files deleted alert non-discardable
  • make built-in sha functions not conflict with libcrypto
  • improve web seed hash failure case
  • improve DHT lookup times
  • uTP path MTU discovery improvements
  • optimized the torrent creator optimizer to scale significantly better with more files
  • fix uTP edge case where udp socket buffer fills up
  • fix nagle implementation in uTP
  • fix bug in udp_socket when changing socks5 proxy quickly

New in libtorrent 0.16.17 (Jun 23, 2014)

  • don't fall back on wildcard port in UPnP
  • fix local service discovery for magnet links
  • fix bitfield issue in file_storage
  • added work-around for MingW issue in file I/O
  • fixed sparse file detection on windows
  • fixed bug in gunzip
  • fix to use proxy settings when adding .torrent file from URL
  • fix resume file issue related to daylight savings time on windows
  • improve error checking in lazy_bdecode

New in libtorrent 1.0.0 RC 3 (Jun 23, 2014)

  • fix support for web servers not supporting keepalive
  • support storing save_path in resume data
  • don't use full allocation on network drives (on windows)
  • added clear_piece_deadlines() to remove all piece deadlines
  • improve queuing logic of inactive torrents (dont_count_slow_torrents)
  • expose optimistic unchoke logic to plugins

New in libtorrent 1.0.0 RC 2 (May 13, 2014)

  • remove set_ratio() feature
  • improve piece_deadline/streaming
  • honor pieces with priority 7 in sequential download mode
  • simplified building python bindings
  • make ignore_non_routers more forgiving in the case there are no UPnP devices at a known router. Should improve UPnP compatibility.
  • include reason in peer_blocked_alert
  • support magnet links wrapped in .torrent files
  • rate limiter optimization
  • rate limiter overflow fix (for very high limits)
  • non-auto-managed torrents no longer count against the torrent limits
  • handle DHT error responses correctly
  • allow force_announce to only affect a single tracker
  • add moving_storage field to torrent_status
  • expose UPnP and NAT-PMP mapping in session object
  • DHT refactoring and support for storing arbitrary data with put and get
  • support building on android
  • improved support for web seeds that don't support keep-alive
  • improve DHT routing table to return better nodes (lower RTT and closer to target)
  • don't use pointers to resume_data and file_priorities in add_torrent_params
  • allow moving files to absolute paths, out of the download directory
  • make move_storage more generic to allow both overwriting files as well as taking existing ones
  • fix choking issue at high upload rates
  • optimized rate limiter
  • make disk cache pool allocator configurable
  • fix library ABI to not depend on logging being enabled
  • use hex encoding instead of base32 in create_magnet_uri
  • include name, save_path and torrent_file in torrent_status, for improved performance
  • separate anonymous mode and force-proxy mode, and tighten it up a bit
  • add per-tracker scrape information to announce_entry
  • report errors in read_piece_alert
  • DHT memory optimization
  • improve DHT lookup speed
  • introduce global connection priority for improved swarm performance
  • make files deleted alert non-discardable
  • make built-in sha functions not conflict with libcrypto
  • improve web seed hash failure case
  • improve DHT lookup times
  • uTP path MTU discovery improvements
  • optimized the torrent creator optimizer to scale significantly better with more files
  • fix uTP edge case where udp socket buffer fills up
  • fix nagle implementation in uTP
  • fixed bug in gunzip
  • fix to use proxy settings when adding .torrent file from URL
  • improve error checking in lazy_bdecode

New in libtorrent 0.16.16 (Mar 28, 2014)

  • add missing add_files overload to the python bindings
  • improve error handling in http gunzip
  • fix debug logging for banning web seeds
  • improve support for de-selected files in full allocation mode
  • fix dht_bootstrap_alert being posted
  • SetFileValidData fix on windows (prevents zero-fill)
  • fix minor lock_files issue on unix

New in libtorrent 0.16.15 (Mar 28, 2014)

  • fix mingw time_t 64 bit issue
  • fix use of SetFileValidData on windows
  • fix crash when using full allocation storage mode
  • improve error_code and error_category support in python bindings
  • fix python binding for external_ip_alert

New in libtorrent 0.16.14 (Mar 28, 2014)

  • make lt_tex more robust against bugs and malicious behavior
  • HTTP chunked encoding fix
  • expose file_granularity flag to python bindings
  • fix DHT memory error
  • change semantics of storage allocation to allocate on first write rather
  • than on startup (behaves better with changing file priorities)
  • fix resend logic in response to uTP SACK messages
  • only act on uTP RST packets with correct ack_nr
  • make uTP errors log in normal log mode (not require verbose)
  • deduplicate web seed entries from torrent files
  • improve error reporting from lazy_decode()

New in libtorrent 0.16.13 (Dec 16, 2013)

  • fix auto-manage issue when pausing session
  • fix bug in non-sparse mode on windows, causing incorrect file errors to be generated
  • fix set_name() on file_storage actually affecting save paths
  • fix large file support issue on mingw
  • add some error handling to set_piece_hashes()
  • fix completed-on timestamp to not be clobbered on each startup
  • fix deadlock caused by some UDP tracker failures
  • fix potential integer overflow issue in timers on windows
  • minor fix to peer_proportional mixed_mode algorithm (TCP limit could go too low)
  • graceful pause fix
  • i2p fixes
  • fix issue when loading certain malformed .torrent files
  • pass along host header with http proxy requests and possible http_connection shutdown hang

New in libtorrent 0.16.11 (Aug 19, 2013)

  • fix web seed URL double escape issue
  • fix string encoding issue in alert messages
  • fix SSL authentication issue
  • deprecate std::wstring overloads. long live utf-8
  • improve time-critical pieces feature (streaming)
  • introduce bandwidth exhaustion attack-mitigation in allowed-fast pieces
  • python binding fix issue where torrent_info objects where destructing when their torrents were deleted
  • added missing field to scrape_failed_alert in python bindings
  • GCC 4.8 fix
  • fix proxy failure semantics with regards to anonymous mode
  • fix round-robin seed-unchoke algorithm
  • add bootstrap.sh to generage configure script and run configure
  • fix bug in SOCK5 UDP support
  • fix issue where torrents added by URL would not be started immediately

New in libtorrent 0.16.10 (May 13, 2013)

  • fix encryption level handle invalid values
  • add a number of missing functions to the python binding
  • fix typo in Jamfile for building shared libraries
  • prevent tracker exchange for magnet links before metadata is received
  • fix crash in make_magnet_uri when generating links longer than 1024 characters
  • fix hanging issue when closing files on windows (completing a download)
  • fix piece picking edge case that could cause torrents to get stuck at hash failure
  • try unencrypted connections first, and fall back to encryption if it fails (performance improvement)
  • add missing functions to python binding (flush_cache(), remap_files() and orig_files())
  • improve handling of filenames that are invalid on windows
  • support 'implied_port' in DHT announce_peer
  • don't use pool allocator for disk blocks (cache may now return pages to the kernel)

New in libtorrent 0.16.9 (Mar 11, 2013)

  • fix long filename truncation on windows
  • distinguish file open mode when checking files and downloading/seeding with bittorrent. updates storage interface
  • improve file_storage::map_file when dealing with invalid input
  • improve handling of invalid utf-8 sequences in strings in torrent files
  • handle more cases of broken .torrent files
  • fix bug filename collision resolver
  • fix bug in filename utf-8 verification
  • make need_save_resume() a bit more robust
  • fixed sparse flag manipulation on windows
  • fixed streaming piece picking issue

New in libtorrent 0.16.8 (Feb 11, 2013)

  • make rename_file create missing directories for new filename
  • added missing python function: parse_magnet_uri
  • fix alerts.all_categories in python binding
  • fix torrent-abort issue which would cancel name lookups of other torrents
  • make torrent file parser reject invalid path elements earlier
  • fixed piece picker bug when using pad-files
  • fix read-piece response for cancelled deadline-pieces
  • fixed file priority vector-overrun
  • fix potential packet allocation alignment issue in utp
  • make 'close_redudnant_connections' cover more cases
  • set_piece_deadline() also unfilters the piece (if its priority is 0)
  • add work-around for bug in windows vista and earlier in GetOverlappedResult
  • fix traversal algorithm leak in DHT
  • fix string encoding conversions on windows
  • take torrent_handle::query_pieces into account in torrent_handle::statue()
  • honor trackers responding with 410
  • fixed merkle tree torrent creation bug
  • fixed crash with empty url-lists in torrent files
  • added missing max_connections() function to python bindings

New in libtorrent 0.16.7 (Jan 20, 2013)

  • fix string encoding in error messages
  • handle error in read_piece and set_piece_deadline when torrent is removed
  • DHT performance improvement
  • attempt to handle ERROR_CANT_WAIT disk error on windows
  • improve peers exchanged over PEX
  • fixed rare crash in ut_metadata extension
  • fixed files checking issue
  • added missing pop_alerts() to python bindings
  • fixed typos in configure script, inversing some feature-enable/disable flags
  • added missing flag_update_subscribe to python bindings
  • active_dht_limit, active_tracker_limit and active_lsd_limit now interpret -1 as infinite

New in libtorrent 0.16.6 (Dec 17, 2012)

  • fixed verbose log error for NAT holepunching
  • fix a bunch of typos in python bindings
  • make get_settings available in the python binding regardless of deprecated functions
  • fix typo in python settings binding
  • fix possible dangling pointer use in peer list
  • fix support for storing arbitrary data in the DHT
  • fixed bug in uTP packet circle buffer
  • fix potential crash when using torrent_handle::add_piece
  • added missing add_torrent_alert to python binding

New in libtorrent 0.16.5 (Oct 23, 2012)

  • udp socket refcounter fix
  • added missing async_add_torrent to python bindings
  • raised the limit for bottled http downloads to 2 MiB
  • add support for magnet links and URLs in python example client
  • fixed typo in python bindings' add_torrent_params
  • introduce a way to add built-in plugins from python
  • consistently disconnect the same peer when two peers simultaneously connect
  • fix local endpoint queries for uTP connections
  • small optimization to local peer discovery to ignore our own broadcasts
  • try harder to bind the udp socket (uTP, DHT, UDP-trackers, LSD) to the same port as TCP
  • relax file timestamp requirements for accepting resume data
  • fix performance issue in web seed downloader (coalescing of blocks sometimes wouldn't work)
  • web seed fixes (better support for torrents without trailing / in web seeds)
  • fix some issues with SSL over uTP connections
  • fix UDP trackers trying all endpoints behind the hostname

New in libtorrent 0.16.4 (Oct 4, 2012)

  • raise the default number of torrents allowed to announce to trackers to 1600
  • improve uTP slow start behavior
  • fixed UDP socket error causing it to fail on Win7
  • update use of boost.system to not use deprecated functions
  • fix GIL issue in python bindings. Deprecated extension support in python
  • fixed bug where setting upload slots to -1 would not mean infinite
  • extend the UDP tracker protocol to include the request string from the tracker URL
  • fix mingw build for linux crosscompiler

New in libtorrent 0.16.3 (Aug 20, 2012)

  • fix python binding backwards compatibility in replace_trackers
  • fix possible starvation in metadata extension
  • fix crash when creating torrents and optimizing file order with pad files
  • disable support for large MTUs in uTP until it is more reliable
  • expose post_torrent_updates and state_update_alert to python bindings
  • fix incorrect SSL error messages
  • fix windows build of shared library with openssl
  • fix race condition causing shutdown hang

New in libtorrent 0.16.2 (Jul 16, 2012)

  • fix permissions issue on linux whith noatime enabled for non-owned files
  • use random peer IDs in anonymous mode
  • fix move_storage bugs
  • fix unnecessary dependency on boost.date_time when building boost.asio as separate compilation
  • always use SO_REUSEADDR and deprecate the flag to turn it on
  • add python bindings for SSL support
  • minor uTP tweaks
  • fix end-game mode issue when some files are selected to not be downloaded
  • improve uTP slow start
  • make uTP less aggressive resetting cwnd when idle

New in libtorrent 0.16.1 (Jun 22, 2012)

  • fixed crash when providing corrupt resume data
  • fixed support for boost-1.44
  • fixed reversed semantics of queue_up() and queue_down()
  • added missing functions to python bindings (file_priority(), set_dht_settings())
  • fixed low_prio_disk support on linux
  • fixed time critical piece accounting in the request queue
  • fixed semantics of rate_limit_utp to also ignore per-torrent limits
  • fixed piece sorting bug of deadline pieces
  • fixed python binding build on Mac OS and BSD
  • fixed UNC path normalization (on windows, unless UNC paths are disabled)
  • fixed possible crash when enabling multiple connections per IP
  • fixed typo in win vista specific code, breaking the build
  • change default of rate_limit_utp to true
  • fixed DLL export issue on windows (when building a shared library linking statically against boost)
  • fixed FreeBSD build
  • fixed web seed performance issue whith pieces > 1 MiB
  • fixed unchoke logic when using web seeds
  • fixed compatibility with older versions of boost (down to boost 1.40)

New in libtorrent 0.16.0 (Apr 17, 2012)

  • support torrents with more than 262000 pieces
  • make tracker back-off configurable
  • don't restart the swarm after downloading metadata from magnet links
  • lower the default tracker retry intervals
  • support banning web seeds sending corrupt data
  • don't let hung outgoing connection attempts block incoming connections
  • improve SSL torrent support by using SNI and a single SSL listen socket
  • improved peer exchange performance by sharing incoming connections which advertize listen port
  • deprecate set_ratio(), and per-peer rate limits
  • add web seed support for torrents with pad files
  • introduced a more scalable API for torrent status updates (post_torrent_updates()) and updated client_test to use it
  • updated the API to add_torrent_params turning all bools into flags of a flags field
  • added async_add_torrent() function to significantly improve performance when adding many torrents
  • change peer_states to be a bitmask (bw_limit, bw_network, bw_disk)
  • changed semantics of send_buffer_watermark_factor to be specified as a percentage
  • add incoming_connection_alert for logging all successful incoming connections
  • feature to encrypt peer connections with a secret AES-256 key stored in .torrent file
  • deprecated compact storage allocation
  • close files in separate thread on systems where close() may block (Mac OS X for instance)
  • don't create all directories up front when adding torrents
  • support DHT scrape
  • added support for fadvise/F_RDADVISE for improved disk read performance
  • introduced pop_alerts() which pops the entire alert queue in a single call
  • support saving metadata in resume file, enable it by default for magnet links
  • support for receiving multi announce messages for local peer discovery
  • added session::listen_no_system_port flag to prevent libtorrent from ever binding the listen socket to port 0
  • added option to not recheck on missing or incomplete resume data
  • extended stats logging with statistics=on builds
  • added new session functions to more efficiently query torrent status
  • added alerts for added and removed torrents
  • expanded plugin interface to support session wide states
  • made the metadata block requesting algorithm more robust against hash check failures
  • support a separate option to use proxies for peers or not
  • pausing the session now also pauses checking torrents
  • moved alert queue size limit into session_settings
  • added support for DHT rss feeds (storing only)
  • added support for RSS feeds
  • fixed up some edge cases in DHT routing table and improved unit test of it
  • added error category and error codes for HTTP errors
  • made the DHT implementation slightly more robust against routing table poisoning and node ID spoofing
  • support chunked encoding in http downloads (http_connection)
  • support adding torrents by url to the .torrent file
  • support CDATA tags in xml parser
  • use a python python dictionary for settings instead of session_settings object (in python bindings)
  • optimized metadata transfer (magnet link) startup time (shaved off about 1 second)
  • optimized swarm startup time (shaved off about 1 second)
  • support DHT name lookup
  • optimized memory usage of torrent_info and file_storage, forcing some API changes around file_storage and file_entry
  • support trackerid tracker extension
  • graceful peer disconnect mode which finishes transactions before disconnecting peers
  • support chunked encoding for web seeds
  • uTP protocol support
  • resistance towards certain flood attacks
  • support chunked encoding for web seeds (only for BEP 19, web seeds)
  • optimized session startup time
  • support SSL for web seeds, through all proxies
  • support extending web seeds with custom authorization and extra headers
  • settings that are not changed from the default values are not saved in the session state
  • made seeding choking algorithm configurable
  • deprecated setters for max connections, max half-open, upload and download rates and unchoke slots. These are now set through session_settings
  • added functions to query an individual peer's upload and download limit
  • full support for BEP 21 (event=paused)
  • added share-mode feature for improving share ratios
  • merged all proxy settings into a single one
  • improved SOCKS5 support by proxying hostname lookups
  • improved support for multi-homed clients
  • added feature to not count downloaded bytes from web seeds in stats
  • added alert for incoming local service discovery messages
  • added option to set file priorities when adding torrents
  • removed the session mutex for improved performance
  • added upload and download activity timer stats for torrents
  • made the reuse-address flag configurable on the listen socket
  • moved UDP trackers over to use a single socket
  • added feature to make asserts log to a file instead of breaking the process (production asserts)
  • optimized disk I/O cache clearing
  • added feature to ask a torrent if it needs to save its resume data or not
  • added setting to ignore file modification time when loading resume files
  • support more fine-grained torrent states between which peer sources it announces to
  • supports calculating sha1 file-hashes when creating torrents
  • made the send_buffer_watermark performance warning more meaningful
  • supports complete_ago extension
  • dropped zlib as a dependency and builds using puff.c instead
  • made the default cache size depend on available physical RAM
  • added flags to torrent::status() that can filter which values are calculated
  • support 'explicit read cache' which keeps a specific set of pieces in the read cache, without implicitly caching other pieces
  • support sending suggest messages based on what's in the read cache
  • clear sparse flag on files that complete on windows
  • support retry-after header for web seeds
  • replaced boost.filesystem with custom functions
  • replaced dependency on boost.thread by asio's internal thread primitives
  • added support for i2p torrents
  • cleaned up usage of MAX_PATH and related macros
  • made it possible to build libtorrent without RTTI support
  • added support to build with libgcrypt and a shipped version of libtommath
  • optimized DHT routing table memory usage
  • optimized disk cache to work with large caches
  • support variable number of optimistic unchoke slots and to dynamically adjust based on the total number of unchoke slots
  • support for BitTyrant choker algorithm
  • support for automatically start torrents when they receive an incoming connection
  • added more detailed instrumentation of the disk I/O thread

New in libtorrent 0.15.0 (Mar 30, 2010)

  • introduced a session state save mechanism. load_state() and save_state().
  • this saves all session settings and state (except torrents)
  • deprecated dht_state functions and merged it with the session state
  • added support for multiple trackers in magnet links
  • added support for explicitly flushing the disk cache
  • added torrent priority to affect bandwidth allocation for its peers
  • reduced the number of floating point operations (to better support
  • systems without FPU)
  • added new alert when individual files complete
  • added support for storing symbolic links in .torrent files
  • added support for uTorrent interpretation of multi-tracker torrents
  • handle torrents with duplicate filenames
  • piece timeouts are adjusted to download rate limits
  • encodes urls in torrent files that needs to be encoded
  • fixed not passing &supportcrypto=1 when encryption is disabled
  • introduced an upload mode, which torrents are switched into when
  • it hits a disk write error, instead of stopping the torrent.
  • this lets libtorrent keep uploading the parts it has when it
  • encounters a disk-full error for instance
  • improved disk error handling and expanded use of error_code in
  • error reporting. added a bandwidth state, bw_disk, when waiting
  • for the disk io thread to catch up writing buffers
  • improved read cache memory efficiency
  • added another cache flush algorithm to write the largest
  • contiguous blocks instead of the least recently used
  • introduced a mechanism to be lighter on the disk when checking torrents
  • applied temporary memory storage optimization to when checking
  • a torrent as well
  • removed hash_for_slot() from storage_interface. It is now implemented
  • by using the readv() function from the storage implementation
  • improved IPv6 support by announcing twice when necessary
  • added feature to set a separate global rate limit for local peers
  • added preset settings for low memory environments and seed machines
  • min_memory_usage() and high_performance_seeder()
  • optimized overall memory usage for DHT nodes and requests, peer
  • entries and disk buffers
  • change in API for block_info in partial_piece_info, instead of
  • accessing 'peer', call 'peer()'
  • added support for fully automatic unchoker (no need to specify
  • number of upload slots). This is on by default
  • added support for changing socket buffer sizes through
  • session_settings
  • added support for merkle hash tree torrents (.merkle.torrent)
  • added 'seed mode', which assumes that all files are complete
  • and checks hashes lazily, as blocks are requested
  • added new extension for file attributes (executable and hidden)
  • added support for unbuffered I/O for aligned files
  • added workaround for sparse file issue on Windows Vista
  • added new lt_trackers extension to exchange trackers between
  • peers
  • added support for BEP 17 http seeds
  • added read_piece() to read pieces from torrent storage
  • added option for udp tracker preference
  • added super seeding
  • added add_piece() function to inject data from external sources
  • add_tracker() function added to torrent_handle
  • if there is no working tracker, current_tracker is the
  • tracker that is currently being tried
  • torrents that are checking can now be paused, which will
  • pause the checking
  • introduced another torrent state, checking_resume_data, which
  • the torrent is in when it's first added, and is comparing
  • the files on disk with the resume data
  • DHT bandwidth usage optimizations
  • rate limited DHT send socket
  • tracker connections are now also subject to IP filtering
  • improved optimistic unchoke logic
  • added monitoring of the DHT lookups
  • added bandwidth reports for estimated TCP/IP overhead and DHT
  • includes DHT traffic in the rate limiter
  • added support for bitcomet padding files
  • improved support for sparse files on windows
  • added ability to give seeding torrents preference to active slots
  • added torrent_status::finished_time
  • automatically caps files and connections by default to rlimit
  • added session::is_dht_running() function
  • added torrent_handle::force_dht_announce()
  • added torrent_info::remap_files()
  • support min_interval tracker extension
  • added session saving and loading functions
  • added support for min-interval in tracker responses
  • only keeps one outstanding duplicate request per peer
  • reduces waste download, specifically when streaming
  • added support for storing per-peer rate limits across reconnects
  • improved fallocate support
  • fixed magnet link issue when using resume data
  • support disk I/O priority settings
  • added info_hash to torrent_deleted_alert
  • improved LSD performance and made the interval configurable
  • improved UDP tracker support by caching connect tokens
  • fast piece optimization

New in libtorrent 0.14.4 (Jun 1, 2009)

  • connect candidate calculation fix
  • tightened up disk cache memory usage
  • fixed magnet link parser to accept hex-encoded info-hashes
  • fixed inverted logic when picking which peers to connect to
  • (should mean a slight performance improvement)
  • fixed a bug where a failed rename_file() would leave the storage
  • in an error state which would pause the torrent
  • fixed case when move_storage() would fail. Added a new alert
  • to be posted when it does
  • fixed crash bug when shutting down while checking a torrent
  • fixed handling of web seed urls that didn't end with a
  • slash for multi-file torrents
  • lowered the default connection speed to 10 connection attempts
  • per second
  • optimized memory usage when checking files fails
  • fixed bug when checking a torrent twice
  • improved handling of out-of-memory conditions in disk I/O thread
  • fixed bug when force-checking a torrent with partial pieces
  • fixed memory leak in disk cache
  • fixed torrent file path vulnerability
  • fixed upnp
  • fixed bug when dealing with clients that drop requests (i.e. BitComet)
  • fixes assert as well

New in libtorrent 0.14.3 (May 4, 2009)

  • added python binding for create_torrent
  • fixed boost-1.38 build
  • fixed bug where web seeds would be connected before the files
  • were checked
  • fixed filename bug when using wide characters
  • fixed rare crash in peer banning code
  • fixed potential HTTP compatibility issue
  • fixed UPnP crash
  • fixed UPnP issue where the control url contained the base url
  • fixed a replace_trackers bug
  • fixed bug where the DHT port mapping would not be removed when
  • changing DHT port
  • fixed move_storage bug when files were renamed to be moved out
  • of the root directory
  • added error handling for set_piece_hashes
  • fixed missing include in enum_if.cpp
  • fixed dual IP stack issue
  • fixed issue where renamed files were sometimes not saved in resume data
  • accepts tracker responses with no 'peers' field, as long as 'peers6'
  • is present
  • fixed CIDR-distance calculation in the precense of IPv6 peers
  • save partial resume data for torrents that are queued for checking
  • or checking, to maintain stats and renamed files
  • Don't try IPv6 on windows if it's not installed
  • move_storage fix
  • fixed potential crash on shutdown
  • fixed leaking exception from bdecode on malformed input
  • fixed bug where connection would hang when receiving a keepalive
  • fixed bug where an asio exception could be thrown when resolving
  • peer countries
  • fixed crash when shutting down while checking a torrent
  • fixed potential crash in connection_queue when a peer_connection
  • fail to open its socket

New in libtorrent 0.14.2 (Feb 19, 2009)

  • added missing functions to the python bindings torrent_info::map_file, torrent_info::map_block and torrent_info::file_at_offset.
  • removed support for boost-1.33 and earlier (probably didn't work)
  • fixed potential freezes issues at shutdown
  • improved error message for python setup script
  • fixed bug when torrent file included announce-list, but no valid tracker urls
  • fixed bug where the files requested from web seeds would be the renamed file names instead of the original file names in the torrent.
  • documentation fix of queing section
  • fixed potential issue in udp_socket (affected udp tracker support)
  • made name, comment and created by also be subject to utf-8 error correction (filenames already were)
  • fixed dead-lock when settings DHT proxy
  • added missing export directives to lazy_entry
  • fixed disk cache expiry settings bug (if changed, it would be set to the cache size)
  • fixed bug in http_connection when binding to a particular IP
  • fixed typo in python binding (torrent_handle::piece_prioritize should be torrent_handle::piece_priorities)
  • fixed race condition when saving DHT state
  • fixed bugs related to lexical_cast being locale dependent
  • added support for SunPro C++ compiler
  • fixed bug where messeges sometimes could be encrypted in the wrong order, for encrypted connections.
  • fixed race condition where torrents could get stuck waiting to get checked
  • fixed mapped files bug where it wouldn't be properly restored from resume data properly
  • removed locale dependency in xml parser (caused asserts on windows)
  • fixed bug when talking to https 1.0 servers
  • fixed UPnP bug that could cause stack overflow

New in libtorrent 0.14.1 (Dec 4, 2008)

  • added converter for python unicode strings to utf-8 paths
  • fixed bug in http downloader where the host field did not include the port number
  • fixed headers to not depend on NDEBUG, which would prohibit linking a release build of libtorrent against a debug application
  • fixed bug in disk I/O thread that would make the thread sometimes quit when an error occurred
  • fixed DHT bug
  • fixed potential shutdown crash in disk_io_thread
  • fixed usage of deprecated boost.filsystem functions
  • fixed http_connection unit test
  • fixed bug in DHT when a DHT state was loaded
  • made rate limiter change in 0.14 optional (to take estimated TCP/IP overhead into account)
  • made the python plugin buildable through the makefile
  • fixed UPnP bug when url base ended with a slash and path started with a slash
  • fixed various potentially leaking exceptions
  • fixed problem with removing torrents that are checking
  • fixed documentation bug regarding save_resume_data()
  • added missing documentation on torrent creation
  • fixed bugs in python client examples
  • fixed missing dependency in package-config file
  • fixed shared geoip linking in Jamfile
  • fixed python bindings build on windows and made it possible to generate a windows installer
  • fixed bug in NAT-PMP implementation

New in libtorrent 0.14 (Nov 3, 2008)

  • deprecated add_torrent() in favor of a new add_torrent() that takes a struct with parameters instead. Torrents are paused and auto managed by default.
  • removed 'connecting_to_tracker' torrent state. This changes the enum values for the other states.
  • Improved seeding and choking behavior.
  • Fixed rare buffer overrun bug when calling get_download_queue
  • Fixed rare bug where torrent could be put back into downloading state even though it was finished, after checking files.
  • Fixed rename_file to work before the file on disk has been created.
  • Fixed bug in tracker connections in case of errors caused in the connection constructor.
  • Updated alert system to be filtered by category instead of severity level. Alerts can generate a message through alert::message().
  • Session constructor will now start dht, upnp, natpmp, lsd by default. Flags can be passed in to the constructor to not do this, if these features are to be enabled and disabled at a later point.
  • Removed 'connecting_to_tracker' torrent state
  • Fix bug where FAST pieces were cancelled on choke
  • Fixed problems with restoring piece states when hash failed.
  • Minimum peer reconnect time fix. Peers with no failures would reconnect immediately.
  • Improved web seed error handling
  • DHT announce fixes and off-by-one loop fix
  • Fixed UPnP xml parse bug where it would ignore the port number for the control url.
  • Fixed bug in torrent writer where the private flag was added outside of the info dictionary
  • Made the torrent file parser less strict of what goes in the announce-list entry
  • Fixed type overflow bug where some statistics was incorrectly reported for file larger than 2 GB
  • boost-1.35 support
  • Fixed bug in statistics from web server peers where it sometimes could report too many bytes downloaded.
  • Fixed bug where statistics from the last second was lost when disconnecting a peer.
  • receive buffer optimizations (memcpy savings and memory savings)
  • Support for specifying the TOS byte for peer traffic.
  • Basic support for queueing of torrents.
  • Better bias to give connections to downloading torrents with fewer peers.
  • Optimized resource usage (removed the checking thread)
  • Support to bind outgoing connections to specific ports
  • Disk cache support.
  • New, more memory efficient, piece picker with sequential download support (instead of the more complicated sequential download threshold).
  • Auto Upload slots. Automtically opens up more slots if upload limit is not met.
  • Improved NAT-PMP support by querying the default gateway
  • Improved UPnP support by ignoring routers not on the clients subnet.

New in libtorrent 0.13.1 (Oct 29, 2008)

  • Fixed problems with restoring piece states when hash failed.
  • Minimum peer reconnect time fix. Peers with no failures would reconnect immediately.
  • Improved web seed error handling
  • DHT announce fixes and off-by-one loop fix
  • UPnP fixes
  • Fixed bug in torrent writer where the private flag was added outside of the info dictionary
  • Made the torrent file parser less strict of what goes in the announce-list entry
  • Fixed type overflow bug where some statistics was incorrectly reported for file larger than 2 GB
  • boost-1.35 support
  • Fixed bug in statistics from web server peers where it sometimes could report too many bytes downloaded.
  • Fixed bug where statistics from the last second was lost when disconnecting a peer.