2026-07-27 11:14:24

Upcoming KC3 release

KC3 has been undergoing radical changes since the last release.

Currently the change log looks like this :

New in this release

• libkc3

  • copying temporary variables for pthread_mutex and pthread_rwlock would cause undefined behaviour as per POSIX, this fixes pthread on macOS
  • allow for log hooks (a C function callback with a user pointer) in the facts database
  • incremental compilation with cached parser results in .kc3c files, like Python does. Gives 5x faster loading times for all .kc3 files. env_load automatically handles this.
  • fixed a bug in ht_iterator_next where the iterator would not go through the first collision list
  • database logging now supports and defaults to binary format (marshall + marshall_read)
  • fixed marshall + marshall_read hash table usage

• Facts

  • Facts.connect/accept allows for bi-directional synchronization of an existing Facts.database() over a TLS encrypted connection after a successful HMAC-SHA256 shared secret authentication challenge/response. Master/replica negociation is based on a priority negociation : each node sends its priority and the lower priority is the master while the others are replicas.
  • Facts.accept accepts connections one by one.
  • Facts.acceptor_loop starts a thread that calls accept() in a loop.
  • Facts.acceptor_loop_join() stops the acceptor loop cleanly.

• JSON

  • fixed parser
    • boolean true or false → Bool
    • map {"key", "value"} → Map %{"key" => "value"}
    • array [1, 2, 3] → List [1, 2, 3]

• HTTPd

  • allow for configuration of OpenBSD's unveil(2) in config/unveil.kc3
  • dropped libevent2 support in favor of kqueue(2)
  • add support for Linux and BSD with event_poll
  • allow for graceful shutdown using either SIGTERM or SIGINT
  • fixed memory leaks using otto malloc
  • added support for epoll(7) on Linux
  • fixed memory leaks using ASAn
  • fixed double socket close leading to corruption
  • fixed race conditions in error handling
  • added rate limiting for bots

• HTTPS

  • HTTPS.Client with libtls and automatic or manual connection
    • GET method
    • POST method
    • JSON response