Getting Started

Install Swiftenv

Swiftenv allows you to easily install, and switch between multiple versions of Swift. You can install swiftenv following official instructions.

⚠️ With homebrew use brew install kylef/formulae/swiftenv --HEAD.

Install Swift 3.0 Release

Once you have it, install the Swift 3.0 Release

swiftenv install 3.0

Create your first Zewo web application

First we need to create a directory for our app.

mkdir hello && cd hello

Now we select Swift 3.0 Release with Swiftenv and initialize the project with the Swift Package Manager (SwiftPM).

swiftenv local 3.0
swift package init --type executable

This command will create the basic structure for our app.

├── .gitignore
├── .swift-version
├── Package.swift
├── Sources
│   └── main.swift
└── Tests

Open Package.swift with your favorite editor and add HTTPServer as a dependency.

import PackageDescription

let package = Package(
    name: "hello",
    dependencies: [
        .Package(url: "", majorVersion: 0, minor: 13),

Do your magic

Open main.swift and make it look like this:

import HTTPServer

let router = BasicRouter { route in
    route.get("/hello") { request in
        return Response(body: "Hello, world!")

let server = try Server(configuration: ["port": 8080], responder: router)
try server.start()

This code:

  • Imports the HTTPServer module
  • Creates a BasicRouter
  • Configures a route matching any Request with GET as the HTTP method and /hello as the path.
  • Returns a Response with "Hello, world!" as the body for requests matching the route.
  • Creates an HTTP server that listens on port 8080.
  • Starts the server.

Build and run

Now let's build the app.

swift build

After it compiles, run it.


Terminal Server

Now open your favorite browser and go to http://localhost:8080/hello. You should see Hello, world! in your browser's window. 😊

Safari Hello

By default the server will log the requests/responses.

Terminal Log

Press control + c to stop the server.


Using an IDE can be a huge boost to productivity. Luckily, SwiftPM has Xcode project generation support built in.

To generate your Zewo Xcode project simply run:

swift package generate-xcodeproj

Open your Xcode project by double clicking it on Finder or with:

open hello.xcodeproj

To run the application select the command line application scheme hello on Xcode.

Xcode Scheme

Now click the run button ► or use the shortcut ⌘R. You should see the server running directly from your Xcode.

Xcode Console

You can set breakpoints in your code and debug it as usual.

Xcode Debug

To stop the server just click the stop button ■ or use the shortcut ⌘..

What's next?

Check out our organization for more. You can also take a look at our documentation. If you have any doubts you can reach us at our slack. We're very active and always ready to help.

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