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ChangeLog
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* added support for BEP 32, "IPv6 extension for DHT"
* overhauled listen socket and UDP socket handling, improving multi-home
support and bind-to-device
* added new read_resume_data() function, initializing add_torrent_params
* removed deprecated fields from add_torrent_params
* deprecate "resume_data" field in add_torrent_params
* improved support for bind-to-device
* deprecated ssl_listen, SSL sockets are specified in listen_interfaces now
* improved support for listening on multiple sockets and interfaces
* resume data no longer has timestamps of files
1.1.1 release
* Added missing alert categories in python binding
* Added dht_get_peers_reply_alert alert in python binding
1.1.0 release
* improve robustness and performance of uTP PMTU discovery
* fix duplicate ACK issue in uTP
* support filtering which parts of session state are loaded by load_state()
* deprecate support for adding torrents by HTTP URL
* allow specifying which tracker to scrape in scrape_tracker
* tracker response alerts from user initiated announces/scrapes are now
posted regardless of alert mask
* improve DHT performance when changing external IP (primarily affects
bootstrapping).
* add feature to stop torrents immediately after checking files is done
* make all non-auto managed torrents exempt from queuing logic, including
checking torrents.
* add option to not proxy tracker connections through proxy
* removed sparse-regions feature
* support using 0 disk threads (to perform disk I/O in network thread)
* removed deprecated handle_alert template
* enable logging build config by default (but alert mask disabled by default)
* deprecated RSS API
* experimental support for BEP 38, "mutable torrents"
* replaced lazy_bdecode with a new bdecoder that's a lot more efficient
* deprecate time functions, expose typedefs of boost::chrono in the
libtorrent namespace instead
* deprecate file_base feature in file_storage/torrent_info
* improve piece picker support for reverse picking (used for snubbed peers)
to not cause priority inversion for regular peers
* improve piece picker to better support torrents with very large pieces
and web seeds. (request large contiguous ranges, but not necessarily a
whole piece).
* deprecated session_status and session::status() in favor of performance
counters.
* improve support for HTTP where one direction of the socket is shut down.
* remove internal fields from web_seed_entry
* separate crypto library configuration <crypto> and whether to support
bittorrent protocol encryption <encryption>
* simplify bittorrent protocol encryption by just using internal RC4
implementation.
* optimize copying torrent_info and file_storage objects
* cancel non-critical DNS lookups when shutting down, to cut down on
shutdown delay.
* greatly simplify the debug logging infrastructure. logs are now delivered
as alerts, and log level is controlled by the alert mask.
* removed auto_expand_choker. use rate_based_choker instead
* optimize UDP tracker packet handling
* support SSL over uTP connections
* support web seeds that resolve to multiple IPs
* added auto-sequential feature. download well-seeded torrents in-order
* removed built-in GeoIP support (this functionality is orthogonal to
libtorrent)
* deprecate proxy settings in favor of regular settings
* deprecate separate settings for peer protocol encryption
* support specifying listen interfaces and outgoing interfaces as device
names (eth0, en2, tun0 etc.)
* support for using purgrable memory as disk cache on Mac OS.
* be more aggressive in corking sockets, to coalesce messages into larger
packets.
* pre-emptively unchoke peers to save one round-trip at connection start-up.
* add session constructor overload that takes a settings_pack
* torrent_info is no longer an intrusive_ptr type. It is held by shared_ptr.
This is a non-backwards compatible change
* move listen interface and port to the settings
* move use_interfaces() to be a setting
* extend storage interface to allow deferred flushing and flush the part-file
metadata periodically
* make statistics propagate instantly rather than on the second tick
* support for partfiles, where partial pieces belonging to skipped files are
put
* support using multiple threads for socket operations (especially useful for
high performance SSL connections)
* allow setting rate limits for arbitrary peer groups. Generalizes
per-torrent rate limits, and local peer limits
* improved disk cache complexity O(1) instead of O(log(n))
* add feature to allow storing disk cache blocks in an mmapped file
(presumably on an SSD)
* optimize peer connection distribution logic across torrents to scale
better with many torrents
* replaced std::map with boost::unordered_map for torrent list, to scale
better with many torrents
* optimized piece picker
* optimized disk cache
* optimized .torrent file parsing
* optimized initialization of storage when adding a torrent
* added support for adding torrents asynchronously (for improved startup
performance)
* added support for asynchronous disk I/O
* almost completely changed the storage interface (for custom storage)
* added support for hashing pieces in multiple threads
* fix division by zero in super-seeding logic
1.0.9 release
* fix issue in checking outgoing interfaces (when that option is enabled)
* python binding fix for boost-1.60.0
* optimize enumeration of network interfaces on windows
* improve reliability of binding listen sockets
* support SNI in https web seeds and trackers
* fix unhandled exception in DHT when receiving a DHT packet over IPv6
1.0.8 release
* fix bug where web seeds were not used for torrents added by URL
* fix support for symlinks on windows
* fix long filename issue (on unixes)
* fixed performance bug in DHT torrent eviction
* fixed win64 build (GetFileAttributesEx)
* fixed bug when deleting files for magnet links before they had metadata
1.0.7 release
* fix bug where loading settings via load_state() would not trigger all
appropriate actions
* fix bug where 32 bit builds could use more disk cache than the virtual
address space (when set to automatic)
* fix support for torrents with > 500'000 pieces
* fix ip filter bug when banning peers
* fix IPv6 IP address resolution in URLs
* introduce run-time check for torrent info-sections beeing too large
* fix web seed bug when using proxy and proxy-peer-connections=false
* fix bug in magnet link parser
* introduce add_torrent_params flags to merge web seeds with resume data
(similar to trackers)
* fix bug where dont_count_slow_torrents could not be disabled
* fix fallocate hack on linux (fixes corruption on some architectures)
* fix auto-manage bug with announce to tracker/lsd/dht limits
* improve DHT routing table to not create an unbalanced tree
* fix bug in uTP that would cause any connection taking more than one second
to connect be timed out (introduced in the vulnerability path)
* fixed falling back to sending UDP packets direct when socks proxy fails
* fixed total_wanted bug (when setting file priorities in add_torrent_params)
* fix python3 compatibility with sha1_hash
1.0.6 release
* fixed uTP vulnerability
* make utf8 conversions more lenient
* fix loading of piece priorities from resume data
* improved seed-mode handling (seed-mode will now automatically be left when
performing operations implying it's not a seed)
* fixed issue with file priorities and override resume data
* fix request queue size performance issue
* slightly improve UDP tracker performance
* fix http scrape
* add missing port mapping functions to python binding
* fix bound-checking issue in bdecoder
* expose missing dht_settings fields to python
* add function to query the DHT settings
* fix bug in 'dont_count_slow_torrents' feature, which would start too many
torrents
1.0.5 release
* 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
1.0.4 release
* 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
1.0.3 release
* 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
1.0.2 release
* 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
1.0.1 release
* fix alignment issue in bitfield
* improved error handling of gzip
* fixed crash when web seeds redirect
* fix compiler warnings
1.0 release
* 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 error handling in protocol encryption
0.16.18 release
* fix uninitialized values in DHT DOS mitigation
* fix error handling in file::phys_offset
* fix bug in HTTP scrape response parsing
* enable TCP keepalive for socks5 connection for UDP associate
* fix python3 support
* fix bug in lt_donthave extension
* expose i2p_alert to python. cleaning up of i2p connection code
* fixed overflow and download performance issue when downloading at high rates
* fixed bug in add_torrent_alert::message for magnet links
* disable optimistic disconnects when connection limit is low
* improved error handling of session::listen_on
* suppress initial 'completed' announce to trackers added with replace_trackers
after becoming a seed
* SOCKS4 fix for trying to connect over IPv6
* fix saving resume data when removing all trackers
* fix bug in udp_socket when changing socks5 proxy quickly
0.16.17 release
* 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
0.16.16 release
* 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
0.16.15 release
* 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
0.16.14 release
* 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()
0.16.13 release
* 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
0.16.12 release
* fix building with C++11
* fix IPv6 support in UDP socket (uTP)
* fix mingw build issues
* increase max allowed outstanding piece requests from peers
* uTP performance improvement. only fast retransmit one packet at a time
* improve error message for 'file too short'
* fix piece-picker stat bug when only selecting some files for download
* fix bug in async_add_torrent when settings file_priorities
* fix boost-1.42 support for python bindings
* fix memory allocation issue (virtual addres space waste) on windows
0.16.11 release
* 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
0.16.10 release
* 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)
0.16.9 release
* 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
0.16.8 release
* 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
0.16.7 release
* 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
0.16.6 release
* 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
0.16.5 release
* 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
0.16.4 release
* 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
0.16.3 release
* 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
0.16.2 release
* fix permissions issue on linux with 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
0.16.1 release
* 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 with pieces > 1 MiB
* fixed unchoke logic when using web seeds
* fixed compatibility with older versions of boost (down to boost 1.40)
0.16 release
* 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
0.15.11 release
* fixed web seed bug, sometimes causing infinite loops
* fixed race condition when setting session_settings immediately after creating session
* give up immediately when failing to open a listen socket (report the actual error)
* restored ABI compatibility with 0.15.9
* added missing python bindings for create_torrent and torrent_info
0.15.10 release
* fix 'parameter incorrect' issue when using unbuffered IO on windows
* fixed UDP socket error handling on windows
* fixed peer_tos (type of service) setting
* fixed crash when loading resume file with more files than the torrent in it
* fix invalid-parameter error on windows when disabling filesystem disk cache
* fix connection queue issue causing shutdown delays
* fixed mingw build
* fix overflow bug in progress_ppm field
* don't filter local peers received from a non-local tracker
* fix python deadlock when using python extensions
* fixed small memory leak in DHT
0.15.9 release
* added some functions missing from the python binding
* fixed rare piece picker bug
* fixed invalid torrent_status::finished_time
* fixed bugs in dont-have and upload-only extension messages
* don't open files in random-access mode (speeds up hashing)
0.15.8 release
* allow NULL to be passed to create_torrent::set_comment and create_torrent::set_creator
* fix UPnP issue for routers with multiple PPPoE connections
* fix issue where event=stopped announces wouldn't be sent when closing session
* fix possible hang in file::readv() on windows
* fix CPU busy loop issue in tracker announce logic
* honor IOV_MAX when using writev and readv
* don't post 'operation aborted' UDP errors when changing listen port
* fix tracker retry logic, where in some configurations the next tier would not be tried
* fixed bug in http seeding logic (introduced in 0.15.7)
* add support for dont-have extension message
* fix for set_piece_deadline
* add reset_piece_deadline function
* fix merkle tree torrent assert
0.15.7 release
* exposed set_peer_id to python binding
* improve support for merkle tree torrent creation
* exposed comparison operators on torrent_handle to python
* exposed alert error_codes to python
* fixed bug in announce_entry::next_announce_in and min_announce_in
* fixed sign issue in set_alert_mask signature
* fixed unaligned disk access for unbuffered I/O in windows
* support torrents whose name is empty
* fixed connection limit to take web seeds into account as well
* fixed bug when receiving a have message before having the metadata
* fixed python bindings build with disabled DHT support
* fixed BSD file allocation issue
* fixed bug in session::delete_files option to remove_torrent
0.15.6 release
* fixed crash in udp trackers when using SOCKS5 proxy
* fixed reconnect delay when leaving upload only mode
* fixed default values being set incorrectly in add_torrent_params through add_magnet_uri in python bindings
* implemented unaligned write (for unbuffered I/O)
* fixed broadcast_lsd option
* fixed udp-socket race condition when using a proxy
* end-game mode optimizations
* fixed bug in udp_socket causing it to issue two simultaneous async. read operations
* fixed mingw build
* fixed minor bug in metadata block requester (for magnet links)
* fixed race condition in iconv string converter
* fixed error handling in torrent_info constructor
* fixed bug in torrent_info::remap_files
* fix python binding for wait_for_alert
* only apply privileged port filter to DHT-only peers
0.15.5 release
* support DHT extension to report external IPs
* fixed rare crash in http_connection's error handling
* avoid connecting to peers listening on ports < 1024
* optimized piece picking to not cause busy loops in some end-game modes
* fixed python bindings for tcp::endpoint
* fixed edge case of pad file support
* limit number of torrents tracked by DHT
* fixed bug when allow_multiple_connections_per_ip was enabled
* potential WOW64 fix for unbuffered I/O (windows)
* expose set_alert_queue_size_limit to python binding
* support dht nodes in magnet links
* support 100 Continue HTTP responses
* changed default choker behavior to use 8 unchoke slots (instead of being rate based)
* fixed error reporting issue in disk I/O thread
* fixed file allocation issues on linux
* fixed filename encoding and decoding issue on platforms using iconv
* reports redundant downloads to tracker, fixed downloaded calculation to
be more stable when not including redundant. Improved redundant data accounting
to be more accurate
* fixed bugs in http seed connection and added unit test for it
* fixed error reporting when fallocate fails
* deprecate support for separate proxies for separate kinds of connections
0.15.4 release
* fixed piece picker issue triggered by hash failure and timed out requests to the piece
* fixed optimistic unchoke issue when setting per torrent unchoke limits
* fixed UPnP shutdown issue
* fixed UPnP DeletePortmapping issue
* fixed NAT-PMP issue when adding the same mapping multiple times
* no peers from tracker when stopping is no longer an error
* improved web seed retry behavior
* fixed announce issue
0.15.3 release
* fixed announce bug where event=completed would not be sent if it violated the
min-announce of the tracker
* fixed limitation in rate limiter
* fixed build error with boost 1.44
0.15.2 release
* updated compiler to msvc 2008 for python binding
* restored default fail_limit to unlimited on all trackers
* fixed rate limit bug for DHT
* fixed SOCKS5 bug for routing UDP packets
* fixed bug on windows when verifying resume data for a torrent where
one of its directories had been removed
* fixed race condition in peer-list with DHT
* fix force-reannounce and tracker retry issue
0.15.1 release
* fixed rare crash when purging the peer list
* fixed race condition around m_abort in session_impl
* fixed bug in web_peer_connection which could cause a hang when downloading
from web servers
* fixed bug in metadata extensions combined with encryption
* refactored socket reading code to not use async. operations unnecessarily
* some timer optimizations
* removed the reuse-address flag on the listen socket
* fixed bug where local peer discovery and DHT wouldn't be announced to without trackers
* fixed bug in bdecoder when decoding invalid messages
* added build warning when building with UNICODE but the standard library
doesn't provide std::wstring
* fixed add_node python binding
* fixed issue where trackers wouldn't tried immediately when the previous one failed
* fixed synchronization issue between download queue and piece picker
* fixed bug in udp tracker scrape response parsing
* fixed bug in the disk thread that could get triggered under heavy load
* fixed bug in add_piece() that would trigger asserts
* fixed vs 2010 build
* recognizes more clients in identify_client()
* fixed bug where trackers wouldn't be retried if they failed
* slight performance fix in disk elevator algorithm
* fixed potential issue where a piece could be checked twice
* fixed build issue on windows related to GetCompressedSize()
* fixed deadlock when starting torrents with certain invalid tracker URLs
* fixed iterator bug in disk I/O thread
* fixed FIEMAP support on linux
* fixed strict aliasing warning on gcc
* fixed inconsistency when creating torrents with symlinks
* properly detect windows version to initialize half-open connection limit
* fixed bug in url encoder where $ would not be encoded
0.15 release
* 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
release 0.14.10
* fixed udp tracker race condition
* added support for torrents with odd piece sizes
* fixed issue with disk read cache not being cleared when removing torrents
* made the DHT socket bind to the same interface as the session
* fixed issue where an http proxy would not be used on redirects
* Solaris build fixes
* disabled buggy disconnect_peers feature
release 0.14.9
* disabled feature to drop requests after having been skipped too many times
* fixed range request bug for files larger than 2 GB in web seeds
* don't crash when trying to create torrents with 0 files
* fixed big_number __init__ in python bindings
* fixed optimistic unchoke timer
* fixed bug where torrents with incorrectly formatted web seed URLs would be
connected multiple times
* fixed MinGW support
* fixed DHT bootstrapping issue
* fixed UDP over SOCKS5 issue
* added support for "corrupt" tracker announce
* made end-game mode less aggressive
release 0.14.8
* ignore unkown metadata messages
* fixed typo that would sometimes prevent queued torrents to be checked
* fixed bug in auto-manager where active_downloads and active_seeds would
sometimes be used incorrectly
* force_recheck() no longer crashes on torrents with no metadata
* fixed broadcast socket regression from 0.14.7
* fixed hang in NATPMP when shut down while waiting for a response
* fixed some more error handling in bdecode
release 0.14.7
* fixed deadlock in natpmp
* resume data alerts are always posted, regardless of alert mask
* added wait_for_alert to python binding
* improved invalid filename character replacement
* improved forward compatibility in DHT
* added set_piece_hashes that takes a callback to the python binding
* fixed division by zero in get_peer_info()
* fixed bug where pieces may have been requested before the metadata
was received
* fixed incorrect error when deleting files from a torrent where
not all files have been created
* announces torrents immediately to the DHT when it's started
* fixed bug in add_files that would fail to recurse if the path
ended with a /
* fixed bug in error handling when parsing torrent files
* fixed file checking bug when renaming a file before checking the torrent
* fixed race conditon when receiving metadata from swarm
* fixed assert in ut_metadata plugin
* back-ported some fixes for building with no exceptions
* fixed create_torrent when passing in a path ending with /
* fixed move_storage when source doesn't exist
* fixed DHT state save bug for node-id
* fixed typo in python binding session_status struct
* broadcast sockets now join every network interface (used for UPnP and
local peer discovery)