Build Status codebeat badge codecov Carthage Compatible Swift Package Manager compatible Version

Main Features
🛡 Typed network resources
🏠 Value oriented architecture
🔀 Exchangeable implementations
🚄 Extendable API
🎹        Composable Features          
Fully unit tested
📕  Documented here           

The idea behind this project comes from this talk.objc.io article.

Basic Demo

Lets say you want to fetch a html string.

First you have to create a service, by providing a network access. You can use URLSession out of the box or provide your own custom solution by implementing NetworkAccess.

let networkAccess = URLSession(configuration: .default)
let networkService = BasicNetworkService(networkAccess: networkAccess)

Create a resource with a request to fetch your data.

let url = URL(staticString: "https://httpbin.org")
let request = URLRequest(path: "/", baseURL: url, HTTPMethod: .GET)
let resource = Resource(request: request, parse: { String(data: $0, encoding: .utf8) })

Request your resource and handle the result

networkService.request(resource, onCompletion: { htmlText in
}, onError: { error in
    //Handle errors

Load types conforming to Swift-Decodable

struct IPOrigin: Decodable {
    let origin: String

let url = URL(staticString: "https://www.httpbin.org")
let request = URLRequest(path: "ip", baseURL: url)

let resource = Resource<IPOrigin>(request: request, decoder: JSONDecoder())

networkService.request(resource, onCompletion: { origin in
}, onError: { error in
    //Handle errors

Accessing HTTPResponse

Request your resource and handle the result & http response. This is similar to just requesting a resulting model.

networkService.request(resource, onCompletionWithResponse: { origin, response in
    print(origin, response)
}, onError: { error in
    //Handle errors

Protocol oriented architecture / Exchangability

The following table shows all the protocols and their default implementations.

Protocol Default Implementation
NetworkAccess URLSession
NetworkService BasicNetworkService
NetworkTask URLSessionTask

Composable Features

Class Feature
RetryNetworkService Retrys requests after a given delay when an error meets given criteria.
ModifyRequestNetworkService Modify matching requests. Can be used to add auth tokens or API Keys


  • iOS 9.0+ / macOS 10.10+ / tvOS 9.0+ / watchOS 2.0+
  • Xcode 10.2+
  • Swift 5.0



Carthage is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks.

Specify the following in your Cartfile:

github "dbsystel/dbnetworkstack" ~> 2.0


Feel free to submit a pull request with new features, improvements on tests or documentation and bug fixes. Keep in mind that we welcome code that is well tested and documented.


Lukas Schmidt (Mail, @lightsprint09), Christian Himmelsbach (Mail)


DBNetworkStack is released under the MIT license. See LICENSE for details.