NIOExtras is a good place for code that is related to NIO but not core. It can also be used to incubate APIs for tasks that are possible with core-NIO but are cumbersome today.
What makes a good contribution to NIOExtras?
- a protocol encoder/decoder pair (also called "codec") that is often used but is small enough so it doesn't need its own repository
- a helper to achieve a task that is harder-than-necessary to achieve with core-NIO
All code will go through code review like in the other repositories related to the SwiftNIO project.
swift-nio-extras part of the SwiftNIO 2 family of repositories and depends on the following:
swift-nio, version 2.30.0 or better.- Swift 5.7.1
zliband its development headers installed on the system. But don't worry, you'll findzlibon pretty much any UNIX system that can compile any sort of code.
To depend on swift-nio-extras, put the following in the dependencies of your Package.swift:
.package(url: "https://github.com/apple/swift-nio-extras.git", from: "1.0.0"),The most recent versions of SwiftNIO Extras support Swift 5.7.1 and newer. The minimum Swift version supported by SwiftNIO Extras releases are detailed below:
| SwiftNIO Extras | Minimum Swift Version |
|---|---|
1.0.0 ..< 1.10.0 |
5.0 |
1.10.0 ..< 1.11.0 |
5.2 |
1.11.0 ..< 1.14.0 |
5.4 |
1.14.0 ..< 1.19.0 |
5.5.2 |
1.19.0 ..< 1.20.0 |
5.6 |
1.20.0 ..< 1.23.0 |
5.7.1 |
1.23.0 ..< 1.27.0 |
5.8 |
1.27.0 ... |
5.10 |
On the nio-extras-0.1 branch, you can find the swift-nio-extras version for the SwiftNIO 1 family. It requires Swift 4.1 or better.
QuiescingHelper: Helps to quiesce a server by notifying user code when all previously open connections have closed.LineBasedFrameDecoderSplits incomingByteBuffers on line endings.FixedLengthFrameDecoderSplits incomingByteBuffers by a fixed number of bytes.LengthFieldBasedFrameDecoderSplits incomingByteBuffers by a number of bytes specified in a fixed length header contained within the buffer.LengthFieldPrependerPrepends the number of bytes to outgoingByteBuffers as a fixed length header. Can be used in a codec pair with theLengthFieldBasedFrameDecoder.RequestResponseHandlerMatches a request and a promise with the corresponding response.HTTPResponseCompressorCompresses the body of every HTTP/1 response message.DebugInboundsEventHandlerPrints out all inbound events that travel through theChannelPipeline.DebugOutboundsEventHandlerPrints out all outbound events that travel through theChannelPipeline.WritePCAPHandlerAChannelHandlerthat writes.pcapcontaining the traffic of theChannelPipelinethat you can inspect with Wireshark/tcpdump.HTTP1ToHTTPClientCodecAChannelHandlerthat translates HTTP/1 messages into shared HTTP types for the client side.HTTP1ToHTTPServerCodecAChannelHandlerthat translates HTTP/1 messages into shared HTTP types for the server side.HTTPToHTTP1ClientCodecAChannelHandlerthat translates shared HTTP types into HTTP/1 messages for the client side for compatibility purposes.HTTPToHTTP1ServerCodecAChannelHandlerthat translates shared HTTP types into HTTP/1 messages for the server side for compatibility purposes.HTTP2FramePayloadToHTTPClientCodecAChannelHandlerthat translates HTTP/2 concepts into shared HTTP types for the client side.HTTP2FramePayloadToHTTPServerCodecAChannelHandlerthat translates HTTP/2 concepts into shared HTTP types for the server side.HTTPResumableUploadHandlerAChannelHandlerthat translates HTTP resumable uploads to regular uploads.HTTPDrippingDownloadHandlerAChannelHandlerthat sends a configurable stream of zeroes to a client.HTTPReceiveDiscardHandlerAChannelHandlerthat receives arbitrary bytes from a client and discards them.