opentracker - An open and free bittorrent tracker

Age	Commit message (Collapse)	Author
8 days	Move the build sources into src/	Dirk Engling

8 days	Sweep the obsolete CVS Id keyword out of the tree	Dirk Engling

10 days	Generalize the worker setup/runloop/teardown logic by adding a smol ot_worker helper	Dirk Engling

10 days	Refactor ot_workqueue out of ot_mutex, no behaviour change	Dirk Engling

10 days	Make the mainloop behave like every worker by claiming and releasing a socket being worked on	Dirk Engling

10 days	Make tcp worker multithreaded, too	Dirk Engling
	This shamelessly steals the model established in the UDP workers, i.e. if the kernel is able to bind multiple listening sockets to the same endpoint, we will share them across threads. If it can't, all threads will accept on the same socket. The fast path handles most of the connections, only the rare case of no data yet on the socket is offloaded to the slow path (which used to be the mainloop) for completion. This scales nicely, as the higher the load is, the higher chances are that an accept happens only after the network roundtrip to the peer completes, leading to more connections that already have data waiting for us. We also consolidate the workstruct init and deinit code, preparation for later unifying all thread state structs for all protocols (mca, udc and tcp). The config file gains a per tcp connection worker count and some docs explaining what this knob buys and costs, nudging the user to either keep it 0 or dial it up to at least 2.
11 days	Refactor all tcp specific code into the ot_tcp module to prepare for multiple concurrent workers	Dirk Engling

11 days	Introduce a fast path assuming that a tcp connection's payload already has arrived at accept time	Dirk Engling

11 days	Defer accepts until some data actually is there	Dirk Engling

11 days	Enforce the invariant that each socket is only ever expected to be read from or written to, never both	Dirk Engling

11 days	Reduce syscalls and add helper to count them	Dirk Engling

12 days	Consolidate all tcp/http tear down into a single http_close function to prevent a rare UAF for expiring connections	Dirk Engling

13 days	Revert last wake-up experiment. Having each udp worker wake up once a second to check if the tracker stops is wasteful	Dirk Engling

13 days	With more workers blockingly waiting on udp sockets, we need to keep track of all sockets to shut them down on exit	Dirk Engling

13 days	Performance improvement, where it works: Let different udp worker threads have their own socket	Dirk Engling

14 days	The main event loop(s) now also catch an EINTR and return instead of blocking	Dirk Engling

14 days	Plug in the new per-thread stats counter, also make sure that the ot_clean sleep does not stall tracker exit	Dirk Engling

14 days	Turn malloc+memset into calloc	Dirk Engling

14 days	Forgot some g_now_seconds occurences	Dirk Engling

14 days	All OSes now do have a cheap monotonic clock, so no caching thread is needed. Also add some relative time helpers	Dirk Engling

2026-10-27	Revive http keep alive to save tcp connection setup costs	Dirk Engling

2026-10-26	Replace libowfat's event waiter with our own abstraction	Dirk Engling
	It's with a heavy heart that I remove libowfat as my event library from opentracker. libowfat is what taught opentracker to walk and then fly. The tracker was literally standing on the shoulder of giants when I started writing it in 2006. For its time, the event abstraction was unparalleled and it has held up for many years, and it served the bittorrent community greatly. https://erdgeist.org/gitweb/opentracker/commit/?id=ad472597c569568bad0526d116b601dfcb36638c Unfortunately, it is very likely that libowfat will not be maintained anymore for the foreseeable future, it is already not easy to get its source from upstream and opentracker started receiving bug reports that I can not reasonably answer or patch. Before the project gets more dependent on the limitations of libowfat's current state, I need to teach opentracker to stand on its own feet and fly by itself. I've learned a great deal in the process and have even more respect now for what libowfat pioneered. The path for opentracker is cleared now. Ground work has already been laid in the migration process to support multi threaded http processing while keeping the aggressive reduction of syscalls alive that made the libowfat+opentracker combo so scalable. Here be some dragons, though: Even though there is a unit test suite now, the event loop's rewrite has not been battle tested yet. So you might want to hold up for a bit before jumping on the solo band wagon. What awaits at the end will be a long overdue v1.0, which will be named in honour of Felix.
2026-10-26	Third run of making variable and function names more readable, integer scans and ip parsers	Dirk Engling

2026-10-26	Second run of making variable and function names more readable, urlencoder now matches overall naming scheme	Dirk Engling

2026-10-26	Use new fdstate subsystem to store per fd cookie and timeout	Dirk Engling

2026-10-25	Factor out the timeout setter, will probably go later once we do the io loop ourself	Dirk Engling

2026-10-25	Replace libowfat's iobatch with our own smaller (and probably only temporary) ot_batch	Dirk Engling

2026-10-25	Be stricter about const char*, Wwrite-strings will warn in the future and we don't want to try to overwrite string literals	Dirk Engling

2026-10-25	white space fixes	Dirk Engling

2026-10-25	Split options parsing and config code from opentracker.c, it has grown humongous	Dirk Engling

2026-10-25	Fix build. Last commit was too huge ;)	Dirk Engling

2026-10-25	Decouple config parsing from binding and worker spawning	Dirk Engling
	* Options are parsed now into a listener description list before binding them at once and starting the workers later * UDP workers can now be configured per connection * socket reuse is now done more sensibly, mcast sockets always reused * Hold-off logic after spawning udp workers removed
2026-10-25	Use the new ot_socket abstraction for socket creation, read and write	Dirk Engling

2026-10-24	Replace custom int64 with its standardized int64_t type	Dirk Engling

2026-10-24	Replace libowfat's ip scanner and formatters with own own	Dirk Engling

2026-10-24	Replace libowfat's array with our new blob abstraction	Dirk Engling

2026-10-24	Initialise workstruct for each read, so that stale entries will not linger in http error cases	Dirk Engling

2026-10-24	Use new ranged unsigned int scanner everywhere and squash some bugs along the way	Dirk Engling

2026-10-24	add missing break in config file parser	Dirk Engling

2026-10-24	Replace all manual hex conversion with the new helper	Dirk Engling

2026-10-24	Use new entropy fascility and add tests for it	Dirk Engling

2026-10-24	Replace endianess helpers and remove unused system and libowfat included	Dirk Engling
	* Replace libowfat big endian packers with htonl/ntohl * Turn bucket derivation in ot_mutex.c into its own helper * remove unused includes
2026-10-23	Rework config file parser and tidy up mem inits	Dirk Engling

2026-04-03	turn all int offsets into size_t	Dirk Engling

2024-04-16	Remove CVS version tags, they did not work anymore after moving to git	Dirk Engling

2024-04-15	Install default signal handlers before spawning first thread	Dirk Engling

2024-04-15	time_caching_worker never returns, but if it would, it should return a value	Dirk Engling

2024-04-15	clang-format	Dirk Engling

2024-04-14	Spelling	Dirk Engling

2024-04-14	print when RANDOMTORRENTS were created	Dirk Engling