ActionCableClient

ActionCable is a new WebSockets server being released with Rails 5 which makes it easy to add real-time features to your app. This Swift client makes it dead-simple to connect with that server, abstracting away everything except what you need to get going.

Uses

This is maintained and is being used in production in the About Shout app. It is built in iOS 12.2 with Swfit 5 on Xcode 10.3 and used against a Rails 5.1.4 server hosted on Heroku.

Installation

To install, simply:

Cocoapods

Add the following line to your Podfile and run pod install

pod 'ActionCableClient', :git => 'https://github.com/Verdad/Swift-ActionCableClient.git', :branch => 'master'

Carthage

Not maintained by Verdad as we don't use Carthage. It may or may not work

Add the following to your Cartfile and run carthage update as normal.

github "Verdad/Swift-ActionCableClient"

Usage

Usage and the example project are not maintained but it is where we got started

Get Started & Connect

import ActionCableClient

self.client = ActionCableClient(url: URL(string: "ws://domain.tld/cable")!)

// Connect!
client.connect()

client.onConnected = {
    print("Connected!")
}

client.onDisconnected = {(error: Error?) in
    print("Disconnected!")
}

Subscribe to a Channel

// Create the Room Channel
let roomChannel = client.create("RoomChannel") //The channel name must match the class name on the server

// More advanced usage
let room_identifier = ["room_id" : identifier]
let roomChannel = client.create("RoomChannel", identifier: room_identifier, autoSubscribe: true, bufferActions: true)

Channel Callbacks

// Receive a message from the server. Typically a Dictionary.
roomChannel.onReceive = { (JSON : Any?, error : ErrorType?) in
    print("Received", JSON, error)
}

// A channel has successfully been subscribed to.
roomChannel.onSubscribed = {
    print("Yay!")
}

// A channel was unsubscribed, either manually or from a client disconnect.
roomChannel.onUnsubscribed = {
    print("Unsubscribed")
}

// The attempt at subscribing to a channel was rejected by the server.
roomChannel.onRejected = {
    print("Rejected")
}

Perform an Action on a Channel

// Send an action
roomChannel["speak"](["message": "Hello, World!"])

// Alternate less magical way:
roomChannel.action("speak", ["message": "Hello, World!"])

// Note: The `speak` action must be defined already on the server

Authorization & Headers

// ActionCable can be picky about origins, so if you
// need it can be set here.
client.origin = "https://domain.tld/"

// If you need any sort of authentication, you
// will not have cookies like you do in the browser,
// so set any headers here.
//
// These are available in the `Connection`
// on the server side.

client.headers = [
    "Authorization": "sometoken"
]

Misc

client.onPing = {

}

For more documentation, see the wiki

Requirements

Starscream: The underlying WebSocket library.

Maintainer

Cameron McCord, [email protected]

Original Author

Daniel Rhodes, [email protected]

License

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