HTTP Client

A barebones async-await Swift HTTP client with automatic JSON response parsing.

Installation

Add HTTP Client as a dependency through Xcode or directly to Package.swift:

.package(url: "https://github.com/joemasilotti/HTTP-Client", branch: "main")

Usage

GET request with empty responses

import HTTP

let client = Client<Empty, Empty>()
let request = Request(url: url)
switch await client.request(request) {
case .success: print("Success!")
case .failure(let error): print(error.localizedDescription)
}

POST request with success and response objects

Failure response objects are parsed when the response code is outside of the 200 range.

import HTTP


struct Registration: Codable {
    let email: String
    let password: String
}

struct User: Codable {
    let id: Int
    let isAdmin: Bool
}

struct RegistrationError: LocalizedError, Codable, Equatable {
    let status: Int
    let message: String

    var errorDescription: String? { message }
}

let client = Client<User, RegistrationError>()
let registration = Registration(email: "[email protected]", password: "password")
let request = BodyRequest(url: url, method: .post, body: registration)
switch await client.request(request) {
case .success(let response):
    print("HTTP headers", response.headers)
    print("User", response.value)
case .failure(let error):
    print("Error", error.localizedDescription)
}

Status code

When possible, a status code is also exposed.

import HTTP

let client = Client<Empty, Empty>()
let request = Request(url: url)
switch await client.request(request) {
case .success(let statusCode):
    print("Status code", statusCode)
case .failure(let error):
    print("Status code", error.statusCode ?? "(none)")
}

HTTP headers

HTTP headers can also be set on Request.

import HTTP

let client = Client<Empty, Empty>()
let headers = ["Cookie": "tasty_cookie=strawberry"]
let request = Request(url: url, headers: headers)
_ = await client.request(request)

Custom URLRequest

URLRequest can be used directly if you require more fine grained control.

import HTTP

let client = Client<Empty, Empty>()
let request = URLRequest(
    url: url,
    cachePolicy: .reloadIgnoringLocalCacheData,
    timeoutInterval: 42.0
)
_ = await client.request(request)

User agent

A user agent can also be set for all requests, assigning the "User-Agent" header.

import HTTP

HTTP.Global.userAgent = "Custom User Agent"

Key encoding strategies

By default, all encoding and decoding of keys to JSON is done by converting to snake case.

This can be changed via the global configuration.

import HTTP

HTTP.Global.keyDecodingStrategy = .useDefaultKeys
HTTP.Global.keyEncodingStrategy = .useDefaultKeys