changelog.txt

2.1.0-35

  * update to libtorrent master
  * lt:fix, abort_download() is OK in any state
  * lt:fix race condition when cancelling requests after becoming a seed
  * lt:add announce_port setting

2.1.0-34

  * update to libtorrent master
  * lt:addresses an issue where it would wait for pieces to be written to disk
    before advertising it to peers

2.1.0-33

  * update to libtorrent master
  * using SWIG 4.3.0
  * update to boost 1.86.0
  * update to OpenSSL 3.4.0
  * update android NDK r27c
  * lt:fix performance bug in the file pool, evicting MRU instead of LRU
  * lt:fix bug where file_progress could sometimes be reported as >100%
  * lt:source code cleanup, performance and stability

2.1.0-32

  * update to libtorrent master
  * lt:don't hint POSIX_FADV_RANDOM
  * lt:allow connections while checking resume data if no_verify_files flag is
    set
  * lt:fix BEP-40 peer priority for IPv6
  * lt:limit the piece size in create_torrent constructor
  * lt:set m_file_priority early, to make open_file() work as expected.
  * lt:don't discard netlink messages for previously seen addresses
  * lt:fix issue when closing a uTP connection with a close reason and picking
    up a nagle packet.
  * lt:apply DSCP setting to peers before connecting
  * lt:check settings_pack::max_out_request_queue before alerting performance
    warning: max outstanding piece requests reached
  * lt:check settings_pack::max_out_request_queue before alert
    outstanding_request_limit_reached
  * lt:updated libdatachannel to v0.21.2
  * lt:make anti-leech choker never increase score for dishonesty
  * lt:try encode web seed redirect location
  * lt:send read_piece right at the end of piece_passed
  * lt:fix integer overflow in piece picker
  * lt:try harder to bind TCP and UDP sockets to the same port
  * lt:torrent_status::num_pieces counts pieces passed hash check, as documented
  * lt:add feature to enable interruption of disk I/O worker threads
  * lt:pass in whether a torrent has v1 and/or v2 hashes in storage_params
  * lt:reject resume data if it contains mismatching info hashes
  * lt:restore file priorities in POSIX storage
  * lt:fix the wrong port is being announced to tracker
  * lt:allow I2P leaseset encryption type 4
  * lt:allow execution of on_unknown_torrent method in the absence of active
    torrents
  * lt:fix assert in uTP resend_packet()
  * lt:improve checking and testing of max piece size
  * lt:source code cleanup, performance and stability

2.1.0-31

  * update to libtorrent master
  * using SWIG 4.1.1
  * improved java api layer
  * lt:allow to change save path without any additional actions
  * lt:allow to change save path without moving any files
  * lt:peer_list fix, clear the m_candidate_cache when clear peer_list, and set
    m_num_seeds to 0
  * lt:schedule DHT announces using milliseconds rather than seconds
  * lt:fix issue with web seed connections when they close and re-open
  * lt:removing an already removed torrent is a no-op

2.1.0-30

  * update to libtorrent master
  * add support for Linux arm
  * lt:revert and replace fix for proxies supporting IPv6
  * lt:make i2p session options configurable
  * lt:fix announce_with_tracker assert
  * lt:fallocate() not supported is not a fatal error
  * lt:fix proxying of IPv6 connections via IPv4 proxy
  * lt:fix peer_list to support incoming i2p connections
  * lt:treat CGNAT address range as local IPs
  * lt:disallow piece layer entries that don't refer to any file in the torrent
  * lt:disallow piece layer entries in torrent files that don't compute to their
    advertised root hash
  * lt:validate piece layers against their roots when loading torrents
  * lt:tighten up handling of hash checking v2 and hybrid torrents
  * lt:cache failed DNS lookups as well as successful ones
  * lt:when draining the torrent_info object
  * lt:fix scraping of i2p tracker
  * lt:minor simplification of i2p socket identification
  * lt:store i2p-torrent state in resume data
  * lt:disable DHT for i2p torrents
  * lt:fix accepting incoming i2p connections
  * lt:fix interpretation of non-compact i2p tracker responses
  * lt:add base64decode() for i2p alphabet and simplify base32encode()
  * lt:make i2p trackers only announce once (not once per listen interface)
  * lt:fix i2p SAM parsing of quoted values. and make name lookup failures
    non-fatal
  * lt:expose i2p peer destination (b32 address) in peer_info
  * lt:simplify handling of compact tracker responses for i2p trackers
  * lt:fix sorting of torrent_peer entries when mixing i2p and non-i2p peers
  * lt:make base32encode take a span instead of a string
  * lt:fix issue with read_piece() stopping torrent on pieces not yet downloaded
  * lt:improve handling of allow_i2p_mixed setting to work for magnet links
  * lt:source code cleanup, performance and stability

2.1.0-29

  * update to libtorrent master
  * fix fetch magnet, save the add_torrent_params as a torrent file
  * lt:add need_save_resume field to torrent_status, with the resume data flags
    indicating which aspects of a torrent have changed since the last resume
    data was saved. Also make only_if_modified flag a combination of the other
    flags.
  * lt:separate only_if_modified flag to save_resume_data
  * lt:removing an ephemeral web seed does not affect whether resume data needs
    to be saved
  * lt:allow promoting an ephemeral web seed when adding it
  * lt:fix web seed request for renamed single-file torrents
  * lt:instead of removing web seed with certain errors, just disable them and
    preserve them in the resume data.
  * lt:improve behavior of save_resume_data() only_if_modified flag to avoid
    re-saving the resume data too frequently
  * lt:port 1 is used as a placeholder for announcing to trackers without the
    ability to accept incoming connections
  * lt:fix issue in retrying trackers in tiers > 0
  * lt:fix time_point conversion from/to time_t
  * lt:don't throw a std::system_error holding a boost::system::error_code
  * lt:source code cleanup, performance and stability

2.1.0-28

  * update to libtorrent master
  * update to boost 1.81.0
  * update to OpenSSL 1.1.1t
  * update android NDK r25c
  * removed API to manage trackers from torrent info
  * make sure trackers and web seed info is saved when fetching a magnet
  * lt:minor accounting fix for utp packet pool
  * lt:report back the full endpoint of peers removed from the peer list when
    applying a port_filter and include it in the peer_blocked_alert
  * lt:simplify handling of privileged ports setting by untangling it from the
    port filter
  * lt:get close reason apply visitor types
  * lt:deprecate storing trackers in torrent_info
  * lt:improve I2P support
  * lt:updated libdatachannel to v0.18.1 (re-licensed to MPL 2.0)
  * lt:fix async_wait() for read and write (used to be null_buffers)
  * lt:handle outgoing EOF properly. report eof to the write handler. record
    that we're closing.
  * lt:simplify utp send_reset() a bit
  * lt:correct uTP sequence number check for packets past EOF
  * lt:minor uTP cleanup and updates to logging
  * lt:report EOF to upper layer when receiving a FIN packet, in uTP
  * lt:rename eof and eof_seq_nr to indicate in refers to the incoming stream
  * lt:fix recently introduced create_torrent::generate_buf() where it failed to
    include collections and similar-fields
  * lt:make status_t a proper flag type, to clean up oversized_file indication
    from disk subsystem
  * lt:source code cleanup, performance and stability

2.1.0-27

  * update to libtorrent master
  * removed API to create torrents from torrent info
  * lt:move towards an immutable torrent_info
  * lt:optimize create_torrent::generate_buf()
  * lt:changed offer_id length from 16 to 20 for consistency with the JS
    implementation
  * lt:fixed rtc_signaling to use the peer id generated for the torrent
  * lt:add async tracker status query, post_trackers()
  * lt:add async torrent status query, post_status()
  * lt:create_torrent does not need fileroots to be a member to create_torrent
  * lt:support loading version 2 of resume data format
  * lt:disable alert notification during session destruction
  * lt:ensure loading resume data tolerates bitfields that are too large
  * lt:post torrent_removed_alert after actually removing it from the disk
    subsystem
  * lt:fix use-after-free in web_peer_connection
  * lt:fix issue with torrents that have a piece size not divisible by 16kB
  * lt:optimize resume data format to use less space
  * lt:add async piece availibility query, post_piece_availibility()
  * lt:add async download queue query, post_download_queue()
  * lt:add async file_progress query, post_file_progress()
  * lt:add async peer_info query, post_peer_info()
  * lt:starting torrent, connect to peers found in add_torrent_params
    immediately
  * lt:continue to ack incoming uTP data while finalizing the connection
  * lt:fix sending ST_FIN packet while the socket is stalled
  * lt:fix uTP streams timing out instead of closing cleanly
  * lt:safe usage of strncpy
  * lt:prevent sending data on a uTP socket after closing it
  * lt:fix m_bytes_in_flight invariant and packet counters in the event of the
    UDP socket stalling
  * lt:fix some disk-io counters. primarily num_read_back
  * lt:introduce new API for create_torrent, to phase out the use of
    file_storage for creating torrents
  * lt:clean-up settings_pack default values to be able to return the default
    value for un-set settings without a hack
  * lt:add write_torrent_file_buf() overload for generating .torrent files
  * lt:add create_torrent::generate_buf() function to generate into a buffer
  * lt:use typesafe flag in (internal) file_status() function parameter
  * lt:use typesafe flag in file_status struct, and optimize out a redundant
    call to stat() in add_files
  * lt:resend uTP acks that fail to send due to stalling
  * lt:fix copy_file when the file ends with a sparse region
  * lt:when the uTP socket stalls, mark failed packets for resend
  * lt:add some utility member functions to create_torrent
  * lt:fix trackers being stuck after session pause/resume
  * lt:fix bug in hash_picker with empty files
  * lt:expose mmapped file_open_mode flag
  * lt:add option to not memory map files below a certain size
  * lt:settings_pack now returns default values when queried for missing
    settings
  * lt:don't drop uTP's cwnd below 1*MSS due to latency
  * lt:reset uTP timeout when sending packets
  * lt:extend create_torrent object with piece_range(), end_piece() and
    total_size()
  * lt:fall back to full copy if SEEK_HOLE and SEEK_DATA isn't supported
  * lt:improve error reporting from file opy and move
  * lt:tweak pad file placement to match reference implementation (tail-padding)
  * lt:update state when need to save resume data
  * lt:support incoming SOCKS5 packets with hostnames as source address, for UDP
    trackers
  * lt:modify the Nagle algorithm to allow one undersized packet in flight at a
    time
  * lt:for efficiency, pick up and send an undersized utp packet if there's room
    in the congestion window when 'forcing' a packet
  * lt:ignore duplicate network interface change notifications on linux
  * lt:prevent redundant deferred utp acks from being sent
  * lt:don't memory map files smaller than 1 MiB, use pwrite/pread calls
  * lt:fix wanted_done/done accounting when force-rechecking
  * lt:fix total_want/want accounting when forcing a recheck
  * lt:expose userdata via torrent_handle
  * lt:introduce setting for using pwrite in mmap_disk_storage
  * lt:use pwrite() for writing to files in mmap_storage
  * lt:better thread names
  * lt:fix merging metadata with magnet links added on top of existing torrents
  * lt:add torrent_flag to default all file priorities to dont_download
  * lt:make the SOCKS5 client tolerate a domain name in the response to UDP
    ASSOCIATE
  * lt:fix renaming of filenames that are too long for the filesystem
  * lt:optimize loading merkle tree mask
  * lt:move the creation of directories and retrying opening a file for writing
    down the stack
  * lt:fix destruction order of job-pool and file-pool
  * lt:make LSD code avoid using select_reactor
  * lt:make UPnP code not use select_reactor
  * lt:refactor file_view_pool to allow it to be used with other file objects
    than just memory mapped files
  * lt:remove vectored I/O API from file class
  * lt:remove vector I/O API from part file. use single buffers
  * lt:open files with no_cache set in O_SYNC mode
  * lt:report EOF when attempting to hash off the end of a short file
  * lt:factor out hash_zeroes() from mmap_storage
  * lt:set file index of errors in readwrite() instead of in every file-op
  * lt:change vectored I/O API to single-buffer in readwritev() and posix- and
    mmap storage
  * lt:handle all "fastresume rejected" cases consistently
  * lt:make copy_file_range() fall back to manual copy when it fails with EXDEV
  * lt:use boost static_vector in disk_completed_queue
  * lt:make file_pool_view serialize opening of files, rather than race each
    other. When the same file is needed by multiple threads
  * lt:fix destruction order issue in mmap_disk_io
  * lt:don't disconnect peers after accepting 'slack' connections when no longer
    above the connection limit
  * lt:factor out disk job completed queue from mmap_disk_io
  * lt:factor out and fix debug disk thread functionality
  * lt:make disk_job_pool generic
  * lt:make a generic disk job type
  * lt:simplify the disk io thread pools and factor more of its logic out
    of mmap_disk_io
  * lt:fix issue where stop-when-ready would not close files
  * lt:fixed tracker connections spinning when hostname lookups stall
  * lt:improve tailqueue's API to make it clearer and safer
  * lt:factor out storage_array from mmap_disk_io
  * lt:enable volatile-read for peer connection read requests, when
    disk_io_read_mode is disable_os_cache
  * lt:new scrape_tracker and force_reannounce
  * lt:factor out tracker list, enforce unique tracker URLs
  * lt:extend write_torrent_file() with a flags parameter, don't include DHT
    nodes by default
  * lt:when over the connection limit, treat partially downloaded but complete
    torrents the same as seeds when looking for a peer to replace with a
     potentially better one
  * lt:add torrent_conflict_alert
  * lt:fix issue with merging two magnet link torrents into one hybrid
  * lt:move the protocol version field for tracker alerts into the
    tracker_alert baseclass
  * lt:use sync_file_range() on linux, when disabling write cache
  * lt:post add_torrent_alert after torrent is fully initialized
  * lt:interrupt http_connection::on_resolve() for closed connection
  * lt:fix file_num_blocks() and file_num_pieces() for empty files
  * lt:use default settings in set_piece_hashes
  * lt:ut_metadata: don't request the same block more than once every 3
    seconds unless the source is disconnected
  * lt:unify default limits when loading torrents in torrent_info constructor
  * lt:add new overload to make_magnet_uri that takes an add_torrent_params
  * lt:add missing protocol version to tracker_reply_alert and
    tracker_error_alert
  * lt:fix privilege issue with SetFileValidData()
  * lt:add asynchronous overload of torrent_handle::add_piece()
  * lt:source code cleanup, performance and stability

2.0.6-26

  * using libtorrent master
  * added API support to change the disk I/O back-end
  * lt:fix MacOS version check for preadv() support
  * lt:handle all "fastresume rejected" cases consistently
  * lt:default to a single hashing thread, for full checks
  * lt:fix bind-to-device for tracker announces and UPnP
  * lt:fix bug when checking files and the first piece is invalid
  * lt:rename peer_tos -> peer_dscp
  * lt:updated libdatachannel to v0.17.1
  * lt:simplify part of pe_crypto, init_bt_handshake and stats accounting
  * lt:add new alert, oversized_file_alert, posted when an existing file in a
    torrent is found to have a greater size than the file according to the
    torrent file
  * lt:make the disk buffer pool implement the buffer_allocator_interface
  * lt:send a User-Agent field in HTTP tracker requests in anonymous mode
  * lt:fix issue creating v2 torrent from torrent_info with empty file
  * lt:make recheck files also update which files use partfile
  * lt:add write_through option to disk_io_write_mode
  * lt:improve copy_file() to preserve sparse regions on systems supporting
    SEEK_HOLE/SEEK_DATA
  * lt:add function to truncate over-sized files part of a torrent
  * lt:set lower memory priority for disk I/O threads on windows
  * lt:fix directory creation on windows shared folders
  * lt:rename disk_io_job to mmap_disk_job
  * lt:set thread names on Haiku
  * lt:set thread names on windows
  * lt:set thread names on posix
  * lt:fix mmap_disk_io shutdown race. We may end up posting new jobs after
    starting the shutdown
  * lt:factor out storage initialization
  * lt:add flag to make add_files() not record file attributes
  * lt:source code cleanup, performance and stability

2.0.5-25

 * using libtorrent master
 * lt:deprecate (unused) allow_partial_disk_writes settings
 * lt:fix disk-full error reporting in mmap_disk_io
 * lt:fix similar torrents feature for v2 torrents
 * lt:use MADV_DONTNEED/MADV_COLD for volatile_reads (when checking files)
 * lt:use MADV_NOCORE on BSD systems
 * lt:fix potential unbounded recursion in add_completed_jobs()
 * lt:deprecate (unused) volatile_read_cache setting
 * lt:mark read_cache_line_size and write_cache_line_size as deprecated
 * lt:fix part files being marked as hidden on windows
 * lt:source code cleanup, performance and stability

2.0.5-24

  * using libtorrent master
  * updated to OpenSSL 1.1.1m
  * using android NDK r23b
  * updated to boost 1.78.0
  * lt:remove redundant calls to convert_from_native() on system error messages
  * lt:use UTF-8 encoding for messages coming from boost on Windows
  * lt:fix DHT announce timer issue
  * lt:set DSCP_TRAFFIC_TYPE socket option on windows
  * lt:default TOS marking to 0x04 (LE)
  * lt:poll for new endpoints when forcing a tracker announce
  * lt:only ever set min_interval on tracker entries based on responses from
    trackers
  * lt:retry all trackers when force announcing
  * lt:keep trying to announce to trackers even when all fail
  * lt:don't disable announcing from local endpoints because of temporary
    failures
  * lt:improve error reporting when opening files
  * lt:fix issue in parsing UPnP XML response with multiple forwarding services
  * lt:fix typos in preadv vs. pread detection. add new version of MacOS to
    use vector versions
  * lt:updated libdatachannel to v0.16.1
  * lt:tweak mixed mode algorithm to throttle less
  * lt:source code cleanup, performance and stability

2.0.5-23

  * fix windows build, not enable deprecated functions

2.0.5-22

  * using libtorrent master
  * minimum supported Android API >= 24
  * fix for new network access restrictions in android 11
  * lt:allow unspecified address for android api >= 24
  * lt: explicitly FlushViewOfFile() on windows when closing a file and
    periodically the file with most dirty bytes
  * lt:factor out storage index free list from mmap_disk_io and posix_disk_io
  * lt:enable close_file_interval by default on windows, set to 240 seconds
  * lt:use cached DNS resolver for socks5 proxy
  * lt:back-port fix for accepting incoming connections over socks5
  * lt:fix issue where incoming uTP connections were not accepted over SOCKS5
  * lt:use a more reliable work-around for msvc standard library types whose
    move and move-assign operators can throw
  * lt:overhaul the merkle_tree class in order to allow it to have a
    consistent (and well defined) invariant
  * lt:rename variables, small strengthening of invariant check in merkle_tree
  * lt:add special case for single-node merkle trees in load_piece_layer,
    to maintain an efficient internal representation
  * lt:add merkle_get_first_child() overload
  * lt:make the token limit when parsing metadata from magnet files
    configurable
  * lt:use ifaddrs for android api >= 24, implement enum_routes with
    operation_not_supported
  * lt:fix stalled pieces on disk-full errors
  * lt:fix issue with stalled pieces on disk full errors
  * lt:fix logic penalizing peers for sending corrupt data
  * lt:remove unintended reserve() call in resolve_links
  * lt:fix merkle_tree operator[] and compare_node in the various
    memory-optimized modes
  * lt:slight refactor of logic penalizing peers for sending corrupt data
  * lt:guard against self assignment in hasher512 and hasher code
  * lt:disable deprecation warnings in code calling OpenSSL SHA1 functions
  * lt:fix ambiguous overload of utf8_latin1. Both std::string_view and
    boost::json::string_view can be constructed from a boost::json::string
  * lt:remove unused field on peer_connection, previously used for debugging
  * lt:minor logging fixes
  * lt:add null checks in iface_from_ifaddrs
  * lt:get_torrent_copy_with_hashes() fails if we don't have all the piece
    layers yet
  * lt:don't open the piece in the piece picker if there still are outstanding
    hash jobs (to handle write failures)
  * lt:silence conversion signedness warning on file.cpp
  * lt:restore path character encoding conversion for non UTF-8 locales on
    linux
  * lt:sanitize surrogates found in utf-8
  * lt:fix for building with boost-1.77 on windows
  * lt:fix issue when asking for file progress right when starting a
   force-recheck
  * lt:bump handler allocation sizes for boost-1.77 (linux)
  * lt:fix restoring last_seen_complete from resume data
  * lt:fix build errors involving unsatisfied constraints
  * lt:improve hash request debug logging
  * lt:fix uninitialized timestamp in hash-picker requests
  * lt:fix issue on macOS where the DHT was not restarted on a network-up
    notification
  * lt:fix use-after-free bug in make_magnet_uri
  * lt:fix refactoring bug introduced when turning http_stream handlers into
    templates, where buffer read_pos was checked after being used
  * lt:make remove_torrent flags be treated as flags (instead of an enum)
  * lt:removed name-field at root from write_torrent_file()
  * lt:source code cleanup, performance and stability

2.0.4-21

  * using libtorrent master
  * lt:add write_torrent_file(), a function to save a .torrent file from an
    add_torrent_params
  * lt:don't require piece layers in v2 torrent files, but ensure they are
    valid if they are present
  * lt:use can_disconnect in torrent when is finished
  * lt:use can_disconnect in bt_peer_connection upload-to-upload connection
  * lt:fix seed rank calculation when we're the only known seed
  * lt:fix issue when checking certain v2 torrents
  * lt:make the hash_picker tolerate a valid-hashes buffer that's lying
  * lt:fix issue where a peer may not send a hash request after a piece failure
  * lt:fix issue when asking for file progress right when starting a
    force-recheck
  * lt:source code cleanup, performance and stability

2.0.4-20

  * using libtorrent master
  * added Sha256Hash
  * lt:updated libdatachannel to v0.13.4
  * lt:fix checking torrents
  * lt:removed time_critical_mode from piece_picker::pick_pieces,
    peer_connection and request_blocks.
  * lt:ensure peer_info::client is always valid UTF-8
  * lt:don't check pieces we already have (such as pad files), when running a
    full check
  * lt:improve piece-picker pad-file granularity to bytes (from blocks)
  * lt:improve precision of total_wanted and total_wanted_done
  * lt:fix shutdown issue with incoming SSL connections
  * lt:fix issue with adding v2 torrents with invalid file root hash
  * lt:simplify some checks of pieces against the ignored list in the piece
    picker
  * lt:fix piece picker bug causing double-picks with prefer-contiguous enabled
  * lt:source code cleanup, performance and stability

2.0.3-19

  * using libtorrent master
  * updated to boost 1.76.0
  * lt:clear seed flag when we receive an incomplete bitfield from a peer
  * lt:improve handling of seed flag in PEX messages
  * lt:mitigate accounting error in http seed connection
  * lt:fix issue of accruing unlimited DHT node candidates when DHT is disabled
  * lt:fix bug in parsing chunked encoding
  * lt:a better fix to active, seeding and finished duration timers
  * lt:fix incorrect reporting of active_duration when entering graceful-pause
  * lt:fix redundant file_size check in torrent_info
  * lt:fix support for the executable file permission attribute (and avoid
    making every file executable, on unix-like systems)
  * lt:source code cleanup, performance and stability

2.0.3-18

 * fixed AlertType for missing file_prio_alert entry

2.0.3-17

  * using libtorrent master
  * improved java api layer
  * lt:fix issue creating and loading v2 torrents with empty files
  * lt:updated libdatachannel to v0.12.2
  * lt:source code cleanup, performance and stability

2.0.3-16

  * using libtorrent master
  * improved java api layer
  * lt:updated libdatachannel to v0.12.1
  * lt:fix issue where hash2 disk jobs would not be assigned to the hashing
    threads in the disk I/O thread pool
  * lt:add first and last piece range to sequential download mode
  * lt:make mmap disk io shutdown more reliable. don't ever miss a notification
  * lt:fix identify BitSpirit 3.6
  * lt:source code cleanup, performance and stability

2.0.3-15

  * using libtorrent master
  * updated to OpenSSL 1.1.1k
  * using android NDK r22b
  * lt:add new torrent_file_with_hashes() which includes piece layers for
    creating .torrent files
  * lt:use /etc/ssl/cert.pem to validate HTTPS trackers and web servers on
    MacOS
  * lt:raise the severity of peers sending invalid messages to 'peer_error'.
    Simplify m_upload_only to just record the explicit upload-only state
    communicated via the extension message. Implied upload only is moved to
    the upload_only() query. Add simulations for peer connection tests.
    Mostly for have-all, have-none and bitfields, and some simple invalid
    requests. This will serve as a platform to add more sophisticated tests.
  * lt:restore peer_connection::is_seed to not take m_have_all into account.
    It caused some regression in edge cases
  * lt:add a file_prio_alert, posted when file priorities are applied
  * lt:prefer __builtin_popcountl() over portable C implementation of
    popcnt. This enables the ARM64 SIMD instruction on Apple M1
  * lt:fix issue with setting file priorities and saving resume data. The
    need-save-resume flag should not be set until *after* the new file
    priorities have been applied. Don't set the need-save-resume flag just
    by loading the resume data (when applying the file priorities into the
    piece priorities)
  * lt:source code cleanup, performance and stability

2.0.2-14

  * using libtorrent master
  * minimum supported Android 32 bits API >= 19
  * minimum supported Android 64 bits API >= 21
  * using android NDK r22
  * using android prebuilt toolchain
  * using android LLD linker
  * lt:fix size_on_disk patch
  * lt:fix torrent_info::v2 to be correct after freeing piece layers from
    torrent_info
  * lt:allow no-interest timeouts of peer connections before all connections
    slots are full
  * lt:add flag to force canonical file order and padding for v1-only torrents
  * lt:return nullptr instead of crashing in get_storage_impl
  * lt:fix issue where peers entering upload-mode cannot leave upload-mode
  * lt:fix issue where a DHT message would count as an incoming connection
  * lt:source code cleanup, performance and stability

2.0.2-13

  * using libtorrent master
  * updated to OpenSSL 1.1.1j
  * improved java api layer
  * lt:updated libdatachannel to v0.11.9
  * lt:deprecate sha-1 file hashes (torrent file extension field)
  * lt:add size_on_disk() to file_storage and torrent_info, reporting the total
    size of non-pad files
  * lt:fix issue when failing to parse outgoing_interfaces setting
  * lt:fix issue where set_piece_hashes() would not propagate file errors
  * lt:fix super-seeding issue that could cause a segfault
  * lt:mark need-save-resume when adding a tracker
  * lt:fix need_save_resume_data() for renaming files, share-mode, upload-mode,
    disable- pex, lsd, and dht.
  * lt:fix issue in parsing invalid webtorrent tracker responses
  * lt:fix incoming TCP connections when using tracker-only proxy
  * lt:correctly store "max_uploads" value in resume data
  * lt:fix error messages related to opening files, specifically truncate
    and allocate failures (which currently are incorrectly attributed to
    open file)
  * lt:add work-around for systems without fseeko() (such as Android)
  * lt:source code cleanup, performance and stability

2.0.2-12

  * using libtorrent master
  * fixed missing fseeko64 symbol at runtime
  * fixed download priority type mismatch (now it is byte)
  * lt:cleanup use of _FILE_OFFSET_BITS
  * lt:ensure we don't attempt to make outgoing connections to RTC peers
  * lt:don't announce stopped-event to websocket trackers. This (appears) to
    solve a shutdown stall where we send stopped-announces after aborting
    outstanding announces (including the persistent websocket connection).
    The announce causes the persistent connection to be re-established and
    sometimes not torn down properly again, to complete the shut down
  * lt:remove misleading (and redundant) peer log message
  * lt:increase the default setting for max_allowed_in_request_queue
    from 500 to 2000. The entries in this queue are relatively small,
    and allowing too few may negatively impact high-throughput peers
  * lt:deprecate volatile_read_cache
  * lt:source code cleanup, performance and stability

2.0.2-11

  * using libtorrent master
  * lt:do not accept RTC peer if already connected
  * lt:fix the complete() function, turning a path into an absolute path,
    to correctly strip the ./ prefix of a relative path
  * lt:fix load_file(), used to load files in the torrent_info constructor
    and the posix part file, to support non-ascii characters on windows
  * lt:prevent a time-out because no incoming requests have been received,
    when we're still waiting to respond to previous requests
  * lt:add dedicated error codes for SSRF mitigation and IDNA blocking
  * lt:updated libdatachannel to v0.10.4
  * lt:fix DHT upload rate limit overflow when set very high, or invoked very
    rarely
  * lt:some uTP MTU-probe fixes
  * lt:restart path MTU discovery when a probe is lost that previously made it
  * lt:use IP_PMTUDISC_PROBE instead of IP_PMTUDISC_DO to set the DF flag on
    linux
  * lt:keep sending MTU probes after the MTU floor and ceiling have converged
  * lt:fix overflow of block_index in hash_picker for v2 torrents
  * lt:WebTorrent - add keepalive with ping on WebSocket
  * lt:fix overflow issue when rlimit_nofile is set to infinity
  * lt:simplify some of the computation of MTUs for uTP sockets
  * lt:strengthen SSRF mitigation for web seeds
  * lt:source code cleanup, performance and stability

2.0.2-10

  * using libtorrent master
  * lt:fail loading torrents with too many duplicate file names (as that's a
    potential DoS)
  * lt:don't announce to trackers while checking files, in replace_trackers()
  * lt:fix redundant and failed bytes overflow check
  * lt:source code cleanup, performance and stability

2.0.1-9

  * using libtorrent master
  * lt:fix loading of DHT node ID from previous session on startup
  * lt:use getrandom(), when available, and fall back to /dev/urandom
  * lt:allow not setting a creation date in create_torrent (but default to
    current timestamp). Provide more prominent shortcuts to ask a torrent_info
    about whether it has v1 and v2 metadata
  * lt:pull out cached_block_entry::blocks_in_piece from bitfield, since it's
    immutable and may be read from multiple threads without holding any mutex.
    Other fields in the bitfields may be updated under a mutex, which would
    race with blocks_in_fields otherwise
  * lt:fix data race in storage::m_settings
  * lt:remove invalid asserts, which introduce a data race
  * lt:remove use of global variable in ut_pex (and a data race along with it)
  * lt:fix data race in block cache
  * lt:fix time_now_string to not use a global variable for the returned string
  * lt:magnet link parameters names are case insensitive
  * lt:mitigate a class of tracker SSRF where tracker URLs come preloaded with
    bittorrent tracker query string arguments, like info_hash, event, etc
  * lt:source code cleanup, performance and stability

2.0.1-8

  * using libtorrent master
  * using ubuntu bionic (18.04 LTS) to generate linux binary
  * updated to OpenSSL 1.1.1i
  * updated to boost 1.75.0
  * lt:move session flags into the session_params object
  * lt:m_seq_nr is not incremented when sending a FIN packet
  * lt:add support for getrandom
  * lt:improve seeding of pseudo random number generator
  * lt:use cryptographic random numbers for DHT write key
  * lt:use crypto_random_bytes() to generate PCP nonce
  * lt:use crypto_random_bytes() to generate ed25519 key seeds
  * lt:separate secure random numbers from pseudo random numbers
  * lt:source code cleanup, performance and stability

2.0.1-7

  * using libtorrent master
  * lt:extend SSRF mitigation to also cover web seeds
  * lt:validate HTTPS tracker certificates by default
  * lt:add option to disallow IDNA tracker and web seed hostnames, and disallow
    them by default
  * lt:add is_idna() function to detect IDNA encoded hostname labels
  * lt:load SSL certificates from windows system certificate store, to
    authenticate trackers
  * lt:fix unaligned piece requests in mmap_storage
  * lt:introduce mitigation for Server Side Request Forgery in tracker
    announces
  * lt:simplify pointer arithmetic in utp buffer handling by using span.
    Introduce some more defensive sanity checks
  * lt:don't log protocol encryption key and synchash
  * lt:fix error handling for pool allocation failure. Use regular new, that
    throws on failure, rather than the nothrow version
  * lt:smart_ban uses sha-1 to hash blocks, there's no need to salt
  * lt:clarify that DHT transaction IDs are 16 bits
  * lt:fix concurrent access to part files by using pread/overlapped I/O
    instead of seek+read
  * lt:source code cleanup, performance and stability

2.0.0-6

  * using libtorrent master
  * restored general exception handler in JNI layer
  * added missing flags and api to save session params
  * fixed issue, actual session params were ignored in SessionManager#restart
  * lt:fix issue with moving the session object
  * lt:fix attribute in single-file v2 torrent creation
  * lt:fix padding for empty files in v2 torrent creation
  * lt:deprecate torrent_status::allocating (state no longer used)
  * lt:fix bug creating torrents with symbolic links
  * lt:add function to ask a file_storage whether it's v2 or not
  * lt:remove special case to save metadata in resume data unconditionally when
    added through magnet link
  * lt:fix feature to create hard-links to existing files in other torrents
  * lt:fix bug in torrent_info copy constructor
  * lt:source code cleanup, performance and stability

2.0.0-5

  * using libtorrent master
  * lt:fix mtime field when creating single-file v2 torrents
  * lt:fix issue in file_storage::swap
  * lt:if pre-allocated handler buffer is too small, fall back to malloc/free
  * lt:fix performance regression in checking files
  * lt:fix incorrectly inlined move-assignment of file_storage
  * lt:support constructing sessions in paused mode via new session_flag
  * lt:don't update the num_unchoke_slots counter based on the number of peers,
    in fixed-slots-choker. This counter is used for triggering immediate unchoking
  * lt:fix issue where pausing a session would cause tracker_manager to enter
    shutdown-mode and never come back
  * lt:filter internal peer flag in pex messages
  * lt:fix incorrect interpretation of the peer-exchange flags
  * lt:remove superfluous call to release_files() when triggering a force-recheck
  * lt:prevent protocol encryption over WebRTC
  * lt:post save_resume_data_failed_alert if torrent was removed
  * lt:add a new torrent flag to not validate resume data against files on disk
  * lt:minor cleanups to URL seed. just use the server string as client name,
    always generate a unique peer id
  * lt:source code cleanup, performance and stability

2.0.0-4

  * using libtorrent master
  * lt:replaced remote endpoint assert with logging as it can legit happen
  * lt:enforce unique addresses on rtc peers
  * lt:fixed peer sorting for RTC peers by using remote address as key
  * lt:updated libdatachannel to v0.9.3 (for WebTorrent)
  * lt:add missing add_storage_node_ids, to keep the DHT storage up to date
  * lt:fix calculation in tracker_manager::num_requests when webtorrent is enable
  * lt:fix saving 'name' in write_resume_data()
  * lt:allow saving resume data before metadata has been downloaded (for magnet links)
  * lt:fix issue in add_piece() called multiple times
  * lt:fix recording of unfinished pieces in resume data
  * lt:source code cleanup, performance and stability

2.0.0-3

  * minimum supported Android API >= 21
  * using libtorrent master
  * lt:record blocks in the disk queue as downloaded in the resume data
  * lt:make sure there's always at least a / path component in HTTP requests
  * lt:fix issue in URL parser, causing issues with certain tracker URLs
  * lt:disable use of SetFileValidData() by default (windows). A new setting
    allows enabling it
  * lt:use a different error code than host-unreachable, when skipping
    tracker announces
  * lt:fix error category in http_tracker_connection
  * lt:fix issue where pad blocks would skip the zero-hash check and consider
    the last piece as passed, which in turn could cause a hybrid magnet link
    to fail with inconsistent-hashes
  * lt:remove support for BEP 17 web seeds
  * lt:initialize missing fields in resume data by their default value
  * lt:find the system locale by inspecting the LANG environment variable
  * lt:source code cleanup, performance and stability

2.0.0-2

  * using libtorrent master
  * lt:if the local codepage/locale is already UTF-8, don't perform any character
    conversion
  * lt:drop iconv dependency
  * lt:fix threading issue in convert to/from native functions when using locale
    functions mbtowc and wctomb
  * lt:fix incorrect mapping of performance warning enum to human readable string
  * lt:remove little-endian to host conversion in CRC32 function
  * lt:fix endian issue in classify_prefix()
  * lt:add support for SetFileValidData() to the mmap file (Windows)
  * lt:always check for duplicate peer IDs
  * lt:mark all torrents as not wanting peer connections when both TCP and uTP
    connections are disabled
  * lt:fix issue when changing the seeding_outgoing_connections setting
  * lt:add additional support for no_cache option to mmap file
  * lt:print bdecoded binary data as hex again
  * lt:fix torrent round-trip for v2 torrents in create_torrent
  * lt:fix detection of hard-links not being supported by filesystem
  * lt:clean up parse_utf8_sequence and lower dependence on ConvertUTF code
  * lt:source code cleanup, performance and stability

2.0.0-1

  * minimum supported Android API >= 24
  * updated to boost 1.73.0
  * using android NDK r21d
  * updated to OpenSSL 1.1.1g
  * removed version suffix in binaries
  * using Java 1.8 for source and bytecode target
  * removed support for posix wrapper
  * major SWIG refactor
  * using libtorrent master

1.2.3.0

  * updated to boost 1.72.0
  * using android NDK r21
  * libtorrent release 1.2.3
  * lt:fix erroneous event=completed tracker announce when checking files
  * lt:promote errors in parsing listen_interfaces to post listen_failed_alert
  * lt:fix bug in protocol encryption/obfuscation
  * lt:fix buffer overflow in SOCKS5 UDP logic
  * lt:fix issue of rapid calls to file_priority() clobbering each other
  * lt:clear tracker errors on success
  * lt:optimize setting with unlimited unchoke slots
  * lt:fixed restoring of trackers, comment, creation date and created-by in resume data
  * lt:fix handling of torrents with too large pieces
  * lt:fixed division by zero in anti-leech choker
  * lt:fixed bug in torrent_info::swap
  * lt:source code cleanup, performance and stability

1.2.2.0

  * updated to boost 1.71.0
  * updated to OpenSSL 1.1.1d
  * using android NDK r20b
  * using SWIG 4.0.1
  * libtorrent release 1.2.2
  * lt:fix cases where the disable_hash_checks setting was not honored
  * lt:fix updating of is_finished torrent status, when changing piece priorities
  * lt:fix regression in &left= reporting when adding a seeding torrent
  * lt:fix integer overflow in http parser
  * lt:improve sanitation of symlinks, to support more complex link targets
  * lt:add DHT routing table affinity for BEP 42 nodes
  * lt:add torrent_info constructor overloads to control torrent file limits
  * lt:feature to disable DHT, PEX and LSD per torrent
  * lt:fix issue where trackers from magnet links were not included in create_torrent()
  * lt:pick contiguous pieces from peers with high download rate
  * lt:fix error handling of moving storage to a drive letter that isn't mounted
  * lt:fix HTTP Host header when using proxy
  * lt:source code cleanup, performance and stability

1.2.1.0

  * using android NDK r19c
  * updated to boost 1.70.0
  * removed support for FreeBSD
  * lt:make sure session cleanup releases all its references to torrents
  * lt:track the mapped port for each NAT mapping transport
  * lt:optimize resolve_duplicate_filenames_slow()
  * lt:use a more restrictive limit on number of pieces allowed in a torrent
  * lt:improve disk I/O logging
  * lt:always flush disk I/O job queue before shutdown
  * lt:fix typo in validation of reject messages. Make on_choke a bit more
    defensive
  * lt:tighten up validation of dont-have messages
  * lt:tighten up validation of reject messages, to ensure consistency of stats
    counters
  * lt:tighten up message size checks
  * lt:update symlinks to conform to BEP 47
  * lt:source code cleanup, performance and stability

1.2.0.22

  * updated to OpenSSL 1.1.1b
  * using android NDK r19b
  * lt:add support for creating symlinks, for torrents with symlinks in them
  * lt:allow padfiles of equal size to share the same filename
  * lt:fix seed_mode flag
  * lt:support numeric suffixes to magnet link parameter names
  * lt:added FrostWire's client ID
  * lt:don't try to hash empty read in do_uncached_hash
  * lt:don't copy a vector into the async_write operation for iovec
  * lt:on linux, link against lbdl when using openssl
  * lt:use UNC paths pervasively on windows
  * lt:source code cleanup, performance and stability

1.2.0.21

  * updated to boost 1.69.0
  * experimental support for android posix hook
  * libtorrent release 1.2.0
  * lt:only allow cwnd to be reduced so often (utp)
  * lt:avoid announcing local ip to private tracker
  * lt:don't treat loss of MTU probe packet as a congestion signal (utp)
  * lt:make sure we reset the duplicate ack counter every time we don't receive
    a duplicate ack (utp)
  * lt:remove old (incompatible) sequence number build option (utp)
  * lt:don't leave slow-start just because we hit the advertized receive window
  * lt:simplify and improve the uTP deferred ACK logic to respond earlier
  * lt:improve logic for fast-retransmitting packets on incoming SACK
  * lt:improve utp verbose logging a bit and make the parser pull out more
    metrics
  * lt:restore permissions on directories to 1.1. i.e. rely on umask
  * lt:minor fix to invalid_request_alert logging
  * lt:source code cleanup, performance and stability

1.2.0.20

  * updated to OpenSSL 1.1.1a
  * using android NDK r18b
  * removed posix wrapper hack
  * added support for BEP 53
  * fixed priority values
  * lt:add assignment operator to span
  * lt:fix %u -> %d format codes
  * lt:fix deprecation markup in torrent_status
  * lt:tweak heuristic of how to interpret url seeds in multi-file torrents
  * lt:added more TORRENT_DEPRECATED_ENUM and deprecated unused aio_max in
    settings_pack
  * lt:take a string_view in setting_by_name
  * lt:fix typo in peer log
  * lt:deprecate start_default_features flag, it's only used in deprecated API
  * lt:remove verbose peer logging
  * lt:make stack_allocator::format_string() grow the buffer for large strings
  * lt:move where socket buffers are set up, to happen after the socket is
    opened. log errors in the peer's log instead of session and torrent
  * lt:add stats counter for the number of outstanding async_accept calls
  * lt:fix potential issue where the dht port message is sent before the peer
    handshake
  * lt:correct %u format code for pieces in printf() calls
  * lt:attempt to fix an assert for a newly connected peer that disconnects just
    as we receive the metadata
  * lt:don't use page aligned disk buffers
  * lt:include &ipv4= for private trackers
  * lt:add support for &ipv4= tracker argument
  * lt:use new bdecoder in ut_metadata class
  * lt:fix redundant bytes overflow
  * lt:check for self-assignment in bitfield operator=
  * lt:initialize bencoded ints with zero when constructed
  * lt:exit natpmp::on_reply earlier if we're shutting down
  * lt:fix setting ipv6 interface
  * lt:a better fix to the ssl port announce bug
  * lt:perfect forward async handlers for udp_socket to underlying asio socket
  * lt:move the whole add_torrent_params object into save_resume_data_alert
  * lt:actually fix the issue with the second tracker announce with port 0
  * lt:remove redundant MTU boundary checks
  * lt:fix of asio-debugging build in natpmp. resend_request could be called
    directly, not only as a handler for an async operation
  * lt:fix move_storage with save_path with a trailing slash
  * lt:only make snubbed peers invert the piece picking strategy when we're
    doing rarest first
  * lt:source code cleanup, performance and stability

1.2.0.19

  * lt:ssl listen port fix and improved tracker announce logging
  * lt:properly tear down the disk_io_thread object in set_piece_hashes() when
    exiting via an exception
  * lt:make throwing versions of read_resume_data
  * lt:fix overflow in sliding_average in the case of very high download rates
  * lt:renamed debug_notification to connect_notification
  * lt:fix issue in udp_socket with unusual socket failure
  * lt:utp close-reason use after free fix
  * lt:source code cleanup, performance and stability
  * starting from jlibtorrent 1.2.0.18