v4.0.0

Breaking

• mill-io: register() rejects Token(0), which is now reserved for the waker; take tokens from EventLoop::alloc_token() (#103)
• mill-io: stop() is sticky and never panics: a stop called before run() makes that run() return at once, and each stop is consumed by one run() (#104)
• mill-net: TcpClient::connect takes a TcpClientConfig, TcpClient::start allocates its own token, and on_connect fires only once the handshake completes (#110, #111)
• mill-net: Sends go through a per-connection write queue and can fail with NetworkError::Send(SendError::Backpressure) above the high watermark (#110)
• mill-net: Dropping a TcpClient closes its connection; a started TcpServer runs until TcpServer::stop (#112)
• mill-rpc: Pending calls fail when the connection drops instead of waiting out their timeout (#114)

Added

• mill-io: Timer wheel with schedule_once, schedule_repeating, cancel_timer and pending_timers (#86)
• mill-io: EventLoop::post(), is_reactor_thread() and reregister() (#104)
• mill-io: EventLoop::handler_panics() and EventLoop::timer_panics() count caught panics (#101, #107)
• mill-net: ConnSender sends, closes and pauses reads from any thread, with on_drained, pause_reads and resume_reads (#110)
• mill-net: Configurable high and low watermarks on TcpServerConfig and TcpClientConfig (#110)
• mill-net: TcpClientConfig::connect_timeout, reported through on_error (#111)
• mill-net: TcpServer::stop (#112)
• mill-net: Layer trait for handshakes and byte transforms, added with with_layer (#113)
• mill-net: testing::ChaosProxy, behind the testing feature, splits, throttles, stalls and resets TCP streams (#93, #94)
• mill-rpc: slow_reader_timeout: replies to a slow reader wait for on_drained, and the connection closes after the timeout (#114)
• CI enforces the MSRV, 1.74 (#88)

Fixed

• mill-io: Timer deadlines saturate instead of wrapping, and zero-interval repeating timers no longer spin the reactor (#89, #90)
• mill-io: Panics in timer callbacks and event handlers are caught and counted instead of killing the reactor or a worker (#91, #101)
• mill-io: Compute pool shutdown no longer hangs in drop, and queue depth metrics no longer drift (#87, #96)
• mill-io: Pool mode sends all events for a token to the same worker, so a connection's events stay in order (#102)
• mill-net: Reads drain until WouldBlock, so large messages are no longer stuck until more bytes arrive (#109)
• mill-net: Large or concurrent sends no longer tear frames on WouldBlock (#110)
• mill-net: keep_alive and buffer_size are applied, and socket options go through socket2 with no unsafe (#112)
• mill-rpc: Several clients can share one event loop (#105)
• mill-rpc: The server frames each connection separately, so a corrupt frame closes only that connection (#114)

v2.0.1

What's Changed

• docs: Update documentation with new features and enhanced architecture diagrams by @hulxv in #78
• Replace lockfree with lock_freedom by @jayvdb in #75

New Contributors

• @jayvdb made their first contribution in #75

Full Changelog: v2.0.0...v2.0.1

v2.0.0

What's Changed

• feat: fetching available cores instead of default capacity of ThreadPool by @Sansh2356 in #73
• fix: bottlenecks in the poll handler and threadpool by @hulxv in #76
• feat: event-loop-based Tcp Networking Layer by @hulxv in #74
• feat: compute-intensive threadpool by @hulxv in #77

New Contributors

• @Sansh2356 made their first contribution in #73

Full Changelog: v1.0.2...v2.0.0

v1.0.2 - 2025-10-17

Changed

• Updated mio-rs to version 1.1.0 which includes the fix for macOS thread safety issues

Fixed

• Resolved macOS thread safety issues with mio::Event in worker threads (initially fixed with custom Event wrapper #70, then properly resolved by updating mio-rs after upstream fix #72)

Development

• Enhanced CI/CD with cross-platform testing workflows
• Fixed clippy linting issues
• Added unstable feature testing with nightly Rust channel
• Improved CI workflow to avoid using unstable features in stable & beta channels
• Added TCP tests and disabled UDS tests on Windows for better cross-platform support
• Fixed documentation errors

v1.0.1 - 2025-9-16

Documentation

• Fixed documentation errors throughout the codebase
• Enhanced README.md with better explanations and examples

Development

• Bumped version for documentation fixes

v1.0.0 - 2025-9-15

Added

• Complete event loop implementation with reactor pattern
• Thread pool for efficient task execution
• Object pool for memory management optimization
• Polling abstraction layer with PollHandle
• Error handling module with custom error types
• Event loop registration and deregistration capabilities
• Multiple channel types (MPMC/MPSC) for inter-thread communication

Examples

• Echo Server: Complete TCP echo server implementation
• HTTP Server: Basic HTTP server example
• File Watcher: File system monitoring example
• JSON-RPC Server: JSON-RPC protocol server implementation