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Action Cable Swift

Action Cable Swift is a client library being released for Action Cable Rails 5 which makes it easy to add real-time features to your app. This Swift client inspired by "Swift-ActionCableClient", but it not support now and I created Action-Cable-Swift.

Also web sockets client are now separate from the client.

Installation

To install, simply:

Swift Package Manager

⚠️ For iOS before 13 version, please use 0.4.0

Add the following line to your Package.swift

    // ...
    .package(name: "ActionCableSwift", url: "https://github.com/nerzh/Action-Cable-Swift.git", from: "1.0.0"),
    targets: [
        .target(
            name: "YourPackageName",
            dependencies: [
                .product(name: "ActionCableSwift", package: "ActionCableSwift")
            ])
    // ...

Usage

import ActionCableSwift

/// action cable client
let clientOptions: ACClientOptions = .init(debug: false, reconnect: true)
let client: ACClient = .init(stringURL: "ws://localhost:3001/cable", options: clientOptions)
/// pass headers to connect
/// on server you can get this with env['HTTP_COOKIE']
client.headers = ["COOKIE": "Value"]

/// make channel
/// buffering - buffering messages if disconnect and flush after reconnect
let channelOptions: ACChannelOptions = .init(buffering: true, autoSubscribe: true)
/// params to subscribe passed inside the identifier dictionary
let identifier: [String: Any] = ["key": "value"] 
let channel: ACChannel = client.makeChannel(name: "RoomChannel", identifier: identifier, options: channelOptions)

// !!! Make sure that the client and channel objects is declared "globally" and lives while your socket connection is needed

channel.addOnSubscribe { (channel, optionalMessage) in
    print(optionalMessage)
}
channel.addOnMessage { (channel, optionalMessage) in
    print(optionalMessage)
}
channel.addOnPing { (channel, optionalMessage) in
    print("ping")
}

/// Connect
client.connect()

Manual Subscribe to a Channel

client.addOnConnected { (headers) in
    try? channel.subscribe()
}

Channel Callbacks

func addOnMessage(_ handler: @escaping (_ channel: ACChannel, _ message: ACMessage?) -> Void)

func addOnSubscribe(_ handler: @escaping (_ channel: ACChannel, _ message: ACMessage?) -> Void)

func addOnUnsubscribe(_ handler: @escaping (_ channel: ACChannel, _ message: ACMessage?) -> Void)

func addOnRejectSubscription(_ handler: @escaping (_ channel: ACChannel, _ message: ACMessage?) -> Void)

func addOnPing(_ handler: @escaping (_ channel: ACChannel, _ message: ACMessage?) -> Void)

Perform an Action on a Channel

// Send an action
channel.addOnSubscribe { (channel, optionalMessage) in
    try? channel.sendMessage(actionName: "speak", params: ["test": 10101010101])
}

Authorization & Headers

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

If you want to implement your own WebSocket Provider, you should to implement the ACWebSocketProtocol protocol and use another initializator for ACClient

import ActionCableSwift

/// web socket client
let ws: YourWSS = .init(stringURL: "ws://localhost:3001/cable")

/// action cable client
let clientOptions: ACClientOptions = .init(debug: false, reconnect: true)
let client: ACClient = .init(ws: ws, options: clientOptions)

Requirements

Websocket-kit

Author

Me

License

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