SwiftPhoenixClient 4.0.0

SwiftPhoenixClient 4.0.0

LangLanguage SwiftSwift
License MIT
ReleasedLast Release Dec 2021
SPMSupports SPM

Maintained by David Stump, Daniel Rees.

  • By
  • David Stump

Swift Phoenix Client

Swift Version License Platform Carthage compatible Open Source Helpers


SwiftPhoenixClient is a Swift port of phoenix.js, allowing your swift projects to connect to a Phoenix Websocket backend.

We try out best to keep the library up to date with phoenix.js but if there is something that is missing, please create an issue or, even better, a PR to address the change.

Sample Projects

You can view the example of how to use SwiftPhoenixClient in the Example/ dir. There are two primary classes, BasicViewController and ChatRoomViewController. The BasicViewController is designed to test against a local chat server where as ChatRoomViewController is a more "complete" example which targets dwyl's phoenix-chat-example Heroku app.


SwiftPhoenixClient is broken into different modules which match different use cases


The core module which provides the Phoenix Channels and Presence logic. It also uses URLSession's default WebSocket implementation which has a minimum iOS target of 13.0.


If you are targeting iOS < 13.0, or if you you prefer to use Starscream, then you will need to also use the Starscream module to connect to your server. Installation details can be found below.

import SwiftPhoenixClient
import StarscreamSwiftPhoenixClient

let socket = Socket(endPoint: "https://example.com/", transport: { StarscreamTransport(url: $0) })


If you are also using RxSwift in your project, then this module provides extensions for you to use to observe events on a channel. Installation details can be found below.

import RxSwift
import SwiftPhoenixClient
import RxSwiftPhoenixClient

// Setup the Channel to receive and send messages
let channel = socket.channel(topic)
  .subscribe( onNext: { (message) in
    let payload = message.payload
    // Parse out your payload
  }).disposed(by: disposeBag)



You can install SwiftPhoenix Client via CocoaPods by adding the following to your Podfile. Keep in mind that in order to use Swift Phoenix Client, the minimum iOS target must be '9.0'

pod "SwiftPhoenixClient", '~> 4.0'

# If using RxSwift extensions
pod "SwiftPhoenixClient/RxSwift", '~> 4.0'

# If targeting iOS < 13
pod "SwiftPhoenixClient/Starscream", '~> 4.0'

and running pod install. From there you will need to add import SwiftPhoenixClient in any class you want it to be used.


If you use Carthage to manage your dependencies, simply add SwiftPhoenixClient to your Cartfile:

github "davidstump/SwiftPhoenixClient" ~> 4.0

Then run carthage update.

If this is your first time using Carthage in the project, you'll need to go through some additional steps as explained over at Carthage.

NOTE: At this time, Carthage does not provide a way to build only specific repository submodules. All submodules and their dependencies will be built with the above command. However, you don't need to copy frameworks you aren't using into your project. For instance, if you aren't using RxSwift, feel free to delete that framework along with RxSwiftPhoenixClient from the Carthage Build directory after carthage update completes.


Note: Instructions below are for using SwiftPM without the Xcode UI. It's the easiest to go to your Project Settings -> Swift Packages and add SwiftPhoenixClient from there.

To integrate using Apple's Swift package manager, without Xcode integration, add the following as a dependency to your Package.swift:

.package(url: "https://github.com/davidstump/SwiftPhoenixClient.git", .upToNextMajor(from: "4.0.0"))

and then specify "SwiftPhoenixClient" as a dependency of the Target in which you wish to use SwiftPhoenixClient. If you want to use one of the other module add-ons, add also "RxSwiftPhoenixClient" or "StarscreamSwiftPhoenixClient" as your Target dependency respectively. Here's an example PackageDescription:

// swift-tools-version:5.0
import PackageDescription

let package = Package(
    name: "MyPackage",
    products: [
            name: "MyPackage",
            targets: ["MyPackage"]),
    dependencies: [
        .package(url: "https://github.com/davidstump/SwiftPhoenixClient.git", .upToNextMajor(from: "4.0.0"))
    targets: [
            name: "MyPackage",
            dependencies: ["StarscreamSwiftPhoenixClient"])


Using the Swift Phoenix Client is extremely easy (and familiar if you have used the phoenix.js client).

See the Usage Guide for details instructions. You can also check out the documentation


Check out the ViewController in this repo for a brief example of a simple iOS chat application using the Phoenix Chat Example

Also check out both the Swift and Elixir channels on IRC.


Check out the wiki page for getting started


Many many thanks to Daniel Rees for his many contributions and continued maintenance of this project!


SwiftPhoenixClient is available under the MIT license. See the LICENSE file for more info.