SwiftNIO 2.54.0

SemVer Minor

• EmbeddedChannel: getOption(ChannelOptions.allowRemoteHalfClosure) should not fatalError (#2429)

SemVer Patch

• Pooled control message storage. (#2422, patch credit to @ser-0xff)
• NIOPOSIX happy eyeballs now hops to the connection event loop when using a custom resolver to avoid data races (#2436)

Other Changes

• Add tests for WebSocketMaskingKey.random() (#2433, patch credit to @gwynne)
• Add narrative documentation for NIO's concurrency bridges (#2423)
• Include relevant versions (kernel & Swift) in test output (#2425)
• Update update-alloc-limits-... script (#2430)
• Fix flaky test in NIOAsyncWriter (#2431)

SwiftNIO 2.53.0

SemVer Minor

• addition of assertSuccess() and assertFailure() on EventLoopFuture (#2417, patch credit to @dkz2)

SemVer Patch

• Tolerate sending data after close(mode: .output) (#2421)

SwiftNIO 2.52.0

SemVer Minor

• Add CustomDebugStringConvertible conformance to ByteBuffer (#2418, patch credit to @gwynne)
• Add unprocessedBytes property on NIOSingleStepByteToMessageProcessor (#2419)

SwiftNIO 2.51.1

SemVer Patch

• Handle close(output) in the pipeline handler. (#2414)
• NIOThrowingAsyncSequenceProducer throws when cancelled (#2415)

Other Changes

• Add AsyncChannel based ServerBootstrap.bind() methods (#2403)
• Extend the integration test harness to track FDs (#2411)
• AsyncChannelBootstrapTests bind to 0 instead (#2412, #2413)

SwiftNIO 2.51.0

SemVer Minor

• Drop Swift 5.5 (#2406)

SemVer Patch

• Handle reentrant reads in ALPNHandler (#2402)
• Close accepted FDs if we fail to create Socket (#2407)
• Don't have channels stop reading on errors they tolerate. (#2408)

Other Changes

• Add docker-compose file for Swift 5.9 (#2404)
• Fix broken docs. (#2405)
• Avoid double-closing on fcntl failures (#2409)

SwiftNIO 2.50.0

SemVer Minor

• Add NIOAsyncChannel as SPI (@_spi(AsyncChannel)) (#2397)
• Throw CancellationError if NIOThrowingAsyncSequenceProducer.AsyncIterator.next() is cancelled instead of returning nil. The user defined generic Failure type of NIOThrowingAsyncSequenceProducer is also deprecated and must now always be any Swift.Error. (#2399, #2401)

SemVer Patch

• Mildly rework the NIOLock storage (#2395)

Other Changes

• Update links in NIO docs index (#2396)
• Clean up and regression check the docs. (#2400)

SwiftNIO 2.49.0

SemVer Minor

• Mark EventLoop.syncShutdownGracefully and EventLoopGroup.syncShutdownGracefully noasync (#2381)
• Add a pooled recv buffer allocator (#2362)
• NIOAsyncWriter: Provide a fast path for single element writes (#2365)
• Provide OnLoopSendable: Sendable containers that bind a value to a specific EventLoop (#2370)
• Add support for UDP_SEGMENT (#2372)
• Add support for UDP_GRO (#2385)

SemVer Patch

• Pool buffers for ivecs and storage refs in the event loop. (#2358, patch credit to @ser-0xff)
• Fix memory binding. (#2376, patch credit to @ser-0xff)
• Fix an upcoming compiler warning on implicit raw pointer casts. (#2377, patch credit to @atrick)
• Buffer pool for message headers and addresses. (#2378, patch credit to @ser-0xff)
• Remove unused array (#2361)
• Make PooledBuffer safer. (#2363)
• Fix swift-nio iOS builds. (#2369)
• Don't retain a task when all we want is a time (#2373)
• Make our time types transparent (#2374)
• Allow UDP GRO tests to fail in some circumstances (#2387)

Other Changes

• TCP channel throughput benchmark. (#2367, patch credit to @ser-0xff)
• Add UDP performance tests (#2360)
• Clarify on EL semantics (#2366)
• Add availability requirements to TCPThroughputBenchmark (#2368)
• Not Holding OnToRunClosure() test updates (#2375)
• Remove redundant availability guards (#2379)
• Lower the max segment count in tests (#2382)
• Rebuild the channel when retrying testWriteBufferAtGSOSegmentCountLimit (#2383)
• Rework the NIOAsyncSequenceProducer tests to rely less on timings (#2386)
• Work around the SwiftPM layout change. (#2389)
• Always populate utsname (#2391)

SwiftNIO 2.48.0

SemVer Minor

• Special case EventLoopPromise.succeed() when Value is Void (#2311, patch credit to @mob-connection)

SemVer Patch

• Tail allocate mutex and a generic value using ManagedBuffer (#2349, patch credit to @asdf-bro)

Other Changes

• Add Swift 5.8 CI and update nightly CI to Ubuntu 22.04 (#2350)
• Lift alloc counter Package.swift to 5.1 and add platforms (#2352)
• Point docs to Swift Package Index (#2353)
• Fix flaky testTaskCancel_whenStreaming_andNotSuspended (#2355)

SwiftNIO 2.47.0

SemVer Patch

• Remove useless instance variables in the SelectableEventLoop (#2338, patch credit to @thomas-gill-0xff)
• Repair the Windows build of NIOCore (#2339, patch credit to @compnerd)
• Allow writing and reading empty datagrams (#2341, patch credit to @hashemi)
• Prepare mmsghdr structure properly. (#2346, patch credit to @ser-0xff)
• Implement remoteAddress0 and localAddress0 on EmbeddedChannel (#2345)

Other Changes

• Fix main nightly CI (#2337)
• 2023 is real, we should support it (#2342)
• Avoid actually allocating a giant buffer (#2347)
• Avoid integer literals that won't fit. (#2348)

SwiftNIO 2.46.0

SemVer Minor

• Add NIORawSocketBootstrap (#2320, #2317)
• Make EventLoopFuture.wait() unavailable from async (#2331)
• Add easier async to future conversion (#2334)

SemVer Patch

• Cap read+pread POSIX read sizes at Int32.max (#2323)
• Fix non Darwin/Linux builds (#2328)
• Remove implicit ByteBuffer copy in copyMemory (#2330)

Other Changes

• Remove _NIOBeta product (#2319)
• Remove obsolete information from the README (#2321)
• Add .spi.yml for Swift Package Index DocC support (#2324, #2329)
• Measure allocations applying WS mask (#2333)
• Improve performance of tests (#2336)