SwiftNIO (Non-blocking IO in Swift)

SwiftNIO is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.

It's like Netty but in Swift.

Compile, Test and Run

For both Linux and macOS

./swiftw build
./swiftw test
./swiftw run NIOEchoServer

and from some other terminal

echo Hello SwiftNIO | nc localhost 9999

Prerequisites for Linux (using Docker)

Creating a Docker Image for Linux

# create the docker image for linux (one time or when Dockerfile changes)
$ docker build . --build-arg version=4.0 -t=nio

Using the Linux Docker Image

# use the docker image, bind mount the current dir with code
$ docker run -it -v `pwd`:/code -w /code swift-nio bash

# do your thing
$ ./swiftw build
$ ./swiftw test

Testing on Linux

to know which tests to run on linux, swift requires a special mapping file called LinuxMain.swift and explicit mapping of each test case into a static list of tests. this is a real pita, but we are here to help!

# generate linux tests
$ ruby generate_linux_tests.rb

Prerequisites on macOS

Installation of the Dependencies

brew install openssl