mahadshahib/http

Lightweight HTTP in Swfit

HTTP

Asynchronous HTTP server/client

Package.swift

.package(url: "https://github.com/swiftstack/http.git", .branch("dev"))

Quick Start [source]

First we need to create a root fiber and run the event loop:

// main.swift
import HTTP
import Async

async {
    // entry point for async http server
}

loop.run()

Simple server running "http://localhost:8080":

// async body
let server = try Server(host: "localhost", port: 8080)
try registerRoutes(in: server)
try server.start()

Simple get route:

// routes.swift

import HTTP

func registerRoutes(in server: Server) throws {
    server.route(get: "/hello") {
        return "Hey there!"
    }
}

At this point our server is ready to be friendly:

$ swift run main
$ curl http://localhost:8080/hello
> Hey there!

More advanced version:

struct User: Decodable {
    let name: String
}

func helloHandler(user: User) -> String {
    return "Hello \(user.name)"
}

let application = Application(basePath: "/v1")
application.route(get: "/hello", to: helloHandler)
server.addApplication(application)

Most advanced version:

struct User: Decodable {
    let name: String
}

struct Greeting: Encodable {
    let message: String
}

func helloHandler(user: User) -> Greeting {
    return .init(message: "Hello, \(user.name)!")
}

struct SwiftMiddleware: Middleware {
    static func chain(with handler: @escaping RequestHandler) -> RequestHandler {
        return { request in
            if request.url.query?["name"] == "swift" {
                return Response(string: "🤘")
            }
            return try handler(request)
        }
    }
}

let application = Application(basePath: "/v2")

application.route(
    get: "/hello",
    through: [SwiftMiddleware.self],
    to: helloHandler)

server.addApplication(application)

$ swift run main
$ curl http://localhost:8080/v2/hello?name=swift
> 🤘

The same route using human readable urls

struct User: Decodable {
    let name: String
}

struct Greeting: Encodable {
    let message: String
}

func helloHandler(user: User) -> Greeting {
    return .init(message: "Hello, \(user.name)!")
}

struct SwiftMiddleware: Middleware {
    static func chain(with handler: @escaping RequestHandler) -> RequestHandler {
        return { request in
            if request.url.path.split(separator: "/").last == "swift" {
                return Response(string: "🤘")
            }
            return try handler(request)
        }
    }
}

let application = Application(basePath: "/v3")

application.route(
    get: "/hello/:name",
    through: [SwiftMiddleware.self],
    to: helloHandler)

server.addApplication(application)

$ swift run main
$ curl http://localhost:8080/v3/hello/swift
> 🤘