What's Changed

• don't run win32 tests when building python wheel by @arvidn in #7437
• fix missing python converter for dht::announce_flags_t by @arvidn in #7443
• Bump boost version to enable Python 3.11 package builds by @cas-- in #7445
• cmake: don't define _FILE_OFFSET_BITS on Windows by @lazka in #7449
• update SSL certificates for tests by @arvidn in #7466
• Updated numerous repo addresses & revs of pre-commit-hooks by @arvidn in #7468
• Fixes various typos by @luzpaz in #7482
• Fix dht_announce_interval not being followed accurately in some cases by @thrnz in #7476
• suppress new GCC warning from 3rd party code (openssl) by @arvidn in #7494
• update FreeBSD dependency on boost_build to boost-build by @arvidn in #7495
• README: Remove LGTM badges by @luzpaz in #7500
• Forward port candidate cache by @arvidn in #7496
• hidden dllexport by @arvidn in #7497
• reset_save_path by @arvidn in #7498
• fix unnecessary capture of this in lambda expressions by @arvidn in #7503
• run thread-sanitizer on Ubuntu-22.04 on CI by @arvidn in #7499
• make sure the library builds with C++17 and C++20, in addition to C++14 by @arvidn in #7501
• improve TORRENT_RVO feature detection by @arvidn in #7506
• add python bindings by @rcarpa in #7509
• fix use of python ssl module by @arvidn in #7547
• address issue in boost.asio building on iOS by @arvidn in #7546
• improve checking and testing of max piece size by @arvidn in #7514
• fix MingW64 CI build by @arvidn in #7549
• fix assert in uTP resend_packet() by @arvidn in #7574
• bump python version on github actions to 3.12 by @arvidn in #7579
• Color theme revamp by @sledgehammer999 in #7561
• allow execution of on_unknown_torrent method in the absence of active torrents by @joriscarrier in #7537
• migrate awy from aligned_storage by @arvidn in #7584
• minor fixes by @arvidn in #7581
• allow I2P leaseset encryption type 4 by @Vort in #7585
• Fix the wrong port is being announced to tracker by @glassez in #7596
• Remove obsolete LGTM config file by @xavier2k6 in #7591
• Update Cirrus CI config by @xavier2k6 in #7589
• Restore file priorities in POSIX storage by @HanabishiRecca in #7594
• fix and suppress some new clang warnings util addressed (in master) by @arvidn in #7609
• Reject resume data if it contains mismatching info hashes by @glassez in #7597
• add test coverage for read_resume_data() by @arvidn in #7610
• fix test_copy_file for tmpfs by @arvidn in #7611
• add missing test file to tarball by @arvidn in #7612
• Updated numerous pre-commit hook revs. by @xavier2k6 in #7605
• forward-port of #7615 by @arvidn in #7616
• recreate the SSL test certificates with long expiration time by @arvidn in #7618
• bump version to 2.0.10 by @arvidn in #7619

New Contributors

• @lazka made their first contribution in #7449
• @luzpaz made their first contribution in #7482
• @rcarpa made their first contribution in #7509
• @HanabishiRecca made their first contribution in #7594

Full Changelog: v2.0.9...v2.0.10

Changes since previous release:

• fix issue with web seed connections when they close and re-open
• fallocate() not supported is not a fatal error
• fix proxying of IPv6 connections via IPv4 proxy
• treat CGNAT address range as local IPs
• add stricter checking of piece layers when loading torrents
• add stricter checking of v1 and v2 hashes being consistent
• cache failed DNS lookups as well as successful ones
• add an i2p torrent state to control interactions with clear swarms
• fix i2p SAM protocol parsing of quoted messages
• expose i2p peer destination in peer_info
• fix i2p tracker announces
• fix issue with read_piece() stopping torrent on pieces not yet downloaded
• improve handling of allow_i2p_mixed setting to work for magnet links
• fix web seed request for renamed single-file torrents
• fix issue where web seeds could disappear from resume data
• extend save_resume with additional conditional flags
• fix issue with retrying trackers in tiers > 0
• fix last_upload and last_download resume data fields to use posix time
• improve error messages for no_connect_privileged_ports, by untangle it from the port filter
• fix I2P issue introduced in 2.0.0
• add async tracker status query, post_trackers()
• add async torrent status query, post_status()
• support loading version 2 of resume data format
• fix issue with odd piece sizes
• add async piece availability query, post_piece_availability()
• add async download queue query, post_download_queue()
• add async file_progress query, post_file_progress()
• add async peer_info query, post_peer_info()

Changes since previous version:

• back-port load_torrent_*() functions
• fix issue with odd piece sizes

changes since previous 2.0.x release:

• fix uTP streams timing out instead of closing cleanly
• add write_torrent_file_buf() overload for generating .torrent files
• add create_torrent::generate_buf() function to generate into a buffer
• fix copy_file when the file ends with a sparse region
• uTP performance, fix packet loss when sending is stalled
• fix trackers being stuck after session pause/resume
• fix bug in hash_picker with empty files
• uTP performance, prevent premature timeouts/resends
• add option to not memory map files below a certain size
• settings_pack now returns default values when queried for missing settings
• fix copy_file fall-back when SEEK_HOL/SEEK_DATA is not supported
• improve error reporting from file copy and move
• tweak pad file placement to match reference implementation (tail-padding)
• uTP performance, more lenient nagle's algorithm to always allow one outstanding undersized packet
• uTP performance, piggy-back held back undersized packet with ACKs
• uTP performance, don't send redundant deferred ACKs
• support incoming SOCKS5 packets with hostnames as source address, for UDP trackers
• ignore duplicate network interface change notifications on linux
• fix total_want/want accounting when forcing a recheck
• fix merging metadata with magnet links added on top of existing torrents
• add torrent_flag to default all file priorities to dont_download
• fix &so= feature in magnet links
• improve compatibility of SOCKS5 UDP ASSOCIATE
• fix madvise range for flushing cache in mmap_storage
• open files with no_cache set in O_SYNC mode

Changes since previous 1.2.x release.

• fix issue where stop-when-ready would not close files
• uTP performance, fix packet loss when sending is stalled
• uTP performance, prevent premature timeouts/resends
• uTP performance, more lenient nagle's algorithm to always allow one outstanding undersized packet
• uTP performance, piggy-back held back undersized packet with ACKs
• uTP performance, don't send redundant deferred ACKs
• fix wanted_done/done accounting when force-rechecking
• expose userdata via torrent_handle (back-port from 2.0)
• fix renaming of filenames that are too long for the filesystem
• made UPnP and LSD code avoid using select_reactor (to work around an issue on windows in boost.asio < 1.80)

Changes since last release:

• fix issue in use of copy_file_range() on linux
• avoid open-file race in the file_view_pool
• fix issue where stop-when-ready would not close files
• fix issue with duplicate hybrid torrent via separate v1 and v2 magnet links
• added new function to load torrent files, load_torrent_*()
• support sync_file_range() on linux
• fix issue in write_torrent_file() when file size is exactly piece size
• fix file_num_blocks() and file_num_pieces() for empty files
• add new overload to make_magnet_uri()
• add missing protocol version to tracker_reply_alert and tracker_error_alert
• fix privilege issue with SetFileValidData()
• add asynchronous overload of torrent_handle::add_piece()
• default to a single hashing thread, for full checks
• Fix bug when checking files and the first piece is invalid

As well as changes merged in from the 1.2.x branch:

• fixed tracker connections spinning when hostname lookups stall
• fixed error in pkg-config file generation in Jamfile
• improve backwards compatibility with loading magnet link resume files
• fix bind-to-device for tracker announces and UPnP
• rename peer_tos setting to peer_dscp
• fix bdecode support for large strings (>= 100 MB)

Changes since last release:

• fixed tracker connections spinning when hostname lookups stall
• fixed error in pkg-config file generation in Jamfile
• improve backwards compatibility with loading magnet link resume files
• fix bind-to-device for tracker announces and UPnP
• rename peer_tos setting to peer_dscp
• fix bdecode support for large strings (>= 100 MB)

Changes since 2.0.5:

• fix issue creating a v2 torrent from torrent_info containing an empty file
• make recheck files also update which files use partfile
• add write_through disk_io_write_mode, which flushes pieces to disk immediately
• improve copy file function to preserve sparse regions (when supported)
• add function to truncate over-sized files part of a torrent
• fix directory creation on windows shared folders
• add flag to make add_files() not record file attributes
• deprecate (unused) allow_partial_disk_writes settings
• fix disk-full error reporting in mmap_disk_io
• fixed similar-torrents feature for v2 torrents
• fix potential unbounded recursion in add_completed_job, in disk I/O
• deprecated (unused) volatile_read_cache setting
• fix part files being marked as hidden on windows

changes since 1.2.15:

• send User-Agent field in anonymous mode
• fix python binding for settings_pack conversion
• fix DHT announce timer issue
• use DSCP_TRAFFIC_TYPE socket option on windows
• update default ToS setting according to RFC 8622
• keep trying to announce to trackers even when all fail
• don't disable announcing from local endpoints because of temporary failures
• fix issue in parsing UPnP XML response with multiple forwarding services

• on windows, explicitly flush memory mapped files periodically
• fix build with WolfSSL
• fix issue where incoming uTP connections were not accepted over SOCKS5
• fix several issues in handling of checking files of v2 torrents, esp. from magnet links
• make the token limit when parsing metadata from magnet files configurable
• fix issue with stalled pieces on disk full errors
• fix missing python binding for file_progress_flags
• fix torrent_file_with_hashes() to fail when we don't have the piece layers
• restore path character encoding conversion for non UTF-8 locales on linux
• fix use-after-free bug in make_magnet_uri
• add write_torrent_file() to produce a .torrent file from add_torrent_params
• allow loading v2 .torrent files without piece layer
• fix issue with adding v2 torrents with invalid file root hash