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CHANGELOG.md

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Unreleased

v0.7.1 (Apr 10, 2026)

Added

  • sync.singleflight to suppress duplicate concurrent work.
  • perf.hrtime for high-resolution timing.
  • net.addr module extracted, centralized host:port handling.
  • Snappy and LZ4 codecs in compress.

Changed

  • Logger redesigned with a ring buffer and async flushing.
  • JSON encoding module rewritten in C for performance and RFC 8259 compliance.
  • DNS resolver reimplemented with a C-based wire format parser.
  • Cluster packet header expanded to 4 bytes and packet size limits enforced (may affect protocol compatibility).
  • Hive workers now inherit package path and restrict module access.
  • Profiler renamed to perf.
  • Timer refactored to use unified command buffer instead of separate after/cancel buffers.
  • Timer shutdown sequence refactored with explicit thread termination via OP_EXIT commands.

Fixed

  • TLS: propagate handshake/write errors to callers; fix UAF in server ALPN handling.
  • Signal: fix async-signal-unsafe handler and cross-thread lua_sethook race.
  • HTTP/2: validate :status in responses; skip content-length validation for no-body responses; mask WINDOW_UPDATE reserved bit; remove duplicate SETTINGS ACK during handshake.
  • Worker: fix lua_close order to prevent use-after-free.
  • Timer: refine locking in flipbuf and timer pool.

v0.7.0 (Dec 28, 2025)

Added

  • New peer-based cluster implementation (cluster.lua) as an alternative to legacy cluster APIs.
  • Interactive Lua REPL when running without a script or from stdin.
  • MySQL caching_sha2_password authentication support and connection pooling.
  • Etcd v3 client (kv, lease, watch).
  • Unified timeout support for tcp.connect, tls.connect, and net.connect.
  • Public C API layer (api.c) for embedding and integration.
  • silly.hive thread pool for offloading blocking operations.
  • Zlib compression support.
  • Dockerfile for containerized builds and deployment.

Changed

Breaking changes

  • Lua runtime upgraded to 5.5.0.
  • Modules reorganized into namespaces (silly.net, silly.store, silly.security, silly.internal).
  • TCP, UDP, and TLS networking APIs refactored to object-oriented, coroutine-friendly interfaces.
  • UDP receive model changed from callbacks to pull-based APIs (e.g. udp:recvfrom()).
  • HTTP/1.x and HTTP/2 APIs redesigned for protocol correctness.
  • tcp.read / tls.read now return nil, err on error and "" , err on EOF.
  • Legacy cluster.rpc and cluster.msg APIs removed.
  • Internal entry point silly.start() made private as silly._start.

Improvements

  • HTTP/2 implementation reworked with proper flow control and stream lifecycle handling.
  • gRPC behavior improved for large requests via correct HTTP/2 frame fragmentation handling.
  • Socket subsystem refactored with new pooling, ID handling, and error semantics.
  • Socket read path redesigned to use a bounded temporary buffer instead of prediction-based growth.
  • UDP implementation rewritten to align with coroutine-based networking model.
  • WebSocket implementation refined for RFC 6455 compliance.
  • TLS enhanced to support loading certificates from PEM content and dynamic reload.
  • Redis client API updated (redis.new replacing redis:connect, redis.call added).
  • Internal error handling standardized to use string-based error descriptions instead of numeric errno.
  • Tracing improved with more robust trace ID generation.
  • Logging improved (fixed format specifiers, better consistency, deterministic table truncation using {...}, and fallback of unsupported value types to string).
  • Atomic operations migrated from GCC built-ins to C11 atomics.
  • Platform-specific code isolated into unix/ and win/ directories.
  • Internal source layout and naming normalized (drop silly_ prefix, rename silly-src → src, lualib-src → luaclib-src).
  • Crypto reimplemented on top of OpenSSL.

Fixed

  • HTTP/2 trailer headers arriving before response body.
  • Race conditions in sync.channel.
  • Timer session race conditions.
  • Socket-related race conditions and stability issues.

v0.6.0 (Dec 18, 2024)

Fixed

  • Fix websocket frame header byte order
  • Fix http2 scheme header and reset_frame error code
  • Fix http2 window handling
  • Fix various lint warnings

Added

  • Add gRPC support
  • Add signal support
  • Add cancel support for timer and redesign node cache
  • Add Prometheus metrics
  • Add distributed tracing via log (experimental)
  • Add cluster.lua as a flexible alternative to cluster.rpc and cluster.msg
  • Add LuaLS/lua-language-server annotations for type checking and navigation
  • Support TLS SNI certificates
  • Support automatic HTTP/HTTP2 protocol switching
  • Support ETCDv3 client (kv, lease, watch) partially

Changed

  • Handle websocket connection close gracefully
  • Remove trailing '\r\n' from Redis responses
  • Refine endless loop warnings and include tracebacks
  • Unify code style using clang-format
  • Reimplement startup mechanism and module layout
  • Reimplement logger with log levels (debug, info, warn, error) and improved performance

v0.5.0 (Dec 1, 2021)

Fixed

  • Fix incorrect session type in netpacket.rpcpack
  • Fix incorrect lua_gc invocation
  • Handle socket close events in send_msg_tcp/send_msg_udp

Added

  • Add cluster module for cluster networking
  • Allow startup parameters to override environment variables
  • Add examples for timer, socket, rpc, http, and websocket
  • Optimize core.timeout for large timer workloads
  • Extend crypto module with URL-safe base64, sha256, digestsign, and digestverify
  • Support TLS SNI and ALPN
  • Support HTTP/2
  • Refine patch mechanism for flexibility
  • Add extended monitor data (timer events, memory usage)

v0.4.0 (Nov 2, 2020)

Fixed

  • Fix timer session race condition
  • Fix tls.read returning corrupted data
  • Fix DNS name cache
  • Fix sys.socketq authentication race condition
  • Fix DNS session overflow
  • Fix netpacket hash collision handling
  • Ensure no code executes after core.exit()
  • Fix saux.rpc handling of multiple messages per loop
  • Fix saux.rpc timer leak

Added

  • Support IPv6 DNS server addresses
  • Add DOM parser for HTTP
  • Add wakegroup for waiting on coroutine groups
  • Add fd round-back check for sys.socket
  • Add monitor thread for slow event detection
  • Abstract task (coroutine wrapper for socket and timer events)
  • Extend console with task and network debug info
  • Support numeric index keys in core.env
  • Add flow control
  • Upgrade to Lua 5.4 and enable generational GC by default

v0.3.0 (Oct 1, 2017)

Fixed

  • Expand netpacket queue
  • Fix netstream.check and netstream GC
  • Fix profiler timestamp handling
  • Fix AES-CBC mode
  • Reset Redis dbindex on reconnect

Added

  • Add SSL support for http.client
  • Add base64 support
  • Add hotpatch support for Lua code
  • Add pidfile support
  • Use jemalloc as default memory allocator
  • Import accept4 on Linux
  • Support configurable CPU affinity on Linux
  • Add include directive to config files
  • Replace old RPC with saux.rpc and saux.msg
  • Add socket tag for debugging
  • Support shell environment expansion in config files
  • Support multicast data sending
  • Synchronize zproto to support float
  • Support nested CNAME resolution in DNS
  • Allow socket.write to accept string arrays
  • Add Redis pipeline support
  • Extend core.write to support lightuserdata and string arrays
  • Handle file descriptor exhaustion during accept
  • Remove lualib-log and refine daemon logger

v0.2.2 (Jan 3, 2017)

Fixed

  • Fix HTTP protocol handling
  • Fix socket trysend behavior

Added

  • Add new profiler
  • Increase default max packet size to 65535
  • Increase default listen backlog to 256

v0.2.1 (Oct 9, 2016)

Fixed

  • Fix daemon log buffer mode
  • Fix zproto map key synchronization bug
  • Fix netpacket memory leak
  • Fix UDP message memory leak

Added

  • Update to Lua 5.3.3
  • Track Lua VM memory usage
  • Allow custom daemon log paths
  • Add silly.channel synchronization primitive
  • Add core.wait2 and core.wakeup2 interfaces

v0.2.0 (Aug 8, 2016)

Initial release.

  • Basic socket I/O
  • Core libraries