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.

Installation

ActionCableClient is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "ActionCableClient"

Swift 3

If you are looking for a Swift 3 Compatibile version, use the Podfile example below.

pod 'Starscream', :git => 'https://github.com/daltoniam/Starscream.git', :branch => 'swift3'
pod 'ActionCableClient', :git => 'https://github.com/danielrhodes/Swift-ActionCableClient', :branch => 'swift3'

Note: the API may have changed in some places.

Usage

Get Started & Connect

import ActionCableClient

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

// Connect!
client.connect()

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

client.onDisconnected = {(error: ErrorType?) 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

Channel Callbacks

// Receive a message from the server. Typically a Dictionary.
roomChannel.onReceive = { (JSON : AnyObject?, 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!"])

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

SwiftyJSON: Used internally to ensure we are getting good responses from the server.

Starscream: The underlying WebSocket library.

Author

Daniel Rhodes, rhodes.daniel@gmail.com

License

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