Patchwire for iOS

iOS Library for the Patchwire multiplayer server framework created by Michael Barrett.

Requirements

• iOS 8.0+
• Xcode 7.3+

Installation

Carthage

Carthage is an easy to use dependency manager. Once you have installed Carthage, create a Cartfile with the following:

github "VictorBX/patchwire-ios"

CocoaPods

Coming soon

Manually

You can simply drag and drop the files within Source into your project.

Usage

Once you have installed Patchwire-iOS into your project, we can start setting it up. Fist import patchwire.

import PatchwireiOS

Connecting to the server

Patchwire.sharedInstance.verboseLogging = false
Patchwire.sharedInstance.configure(serverIP: "localhost", serverPort: 3001)
Patchwire.sharedInstance.connect()

Sending a command

With every command, you can send a dictionary containing some information.

let chatCommand = Command(command: "chat", data: ["username": "victor", "message": "hello"])
Patchwire.sharedInstance.sendCommand(chatCommand)

Receiving a command

To receive incoming commands from the server, use NSNotificationCenter.

var chatCommandKey = Patchwire.sharedInstance.notificationKey(forCommand: "chat")
NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(ChatTableViewController.didReceiveChatCommand(_:)), name: chatCommandKey, object: nil)

The NSNotification's userInfo dictionary will contain the JSON blob sent from the server.

Receiving IO Stream Events

As the client sends and receives events from the server, the input and output streams send out a message when certain events are triggered. To get those NSStreamEvents from NSStreamDelegate's - stream:handleEvent:, you will need to use NSNotificationCenter. A notification will be sent out by the notification center with names from the PatchwireStreamEventKey enum. The userInfo dictionary will contain the stream event.

// Receiving input stream events
NSNotificationCenter.defaultCenter().addObserver(self, selector: ViewController.didReceiveInputStreamEvent(_:), name: PatchwireStreamEventKey.InputStreamEvent.rawValue, object: nil)

// Receiving output stream events
NSNotificationCenter.defaultCenter().addObserver(self, selector: ViewController.didReceiveOutputStreamEvent(_:), name: PatchwireStreamEventKey.OutputStreamEvent.rawValue, object: nil)

Disconnect/Reconnect

// To disconnect from the server
Patchwire.sharedInstance.disconnect()

// To reconnect to the server
Patchwire.sharedInstance.reconnect(connectAfterSeconds: 5)

Example Chat Project

Server Side

To run the example chat project, first let's setup the Patchwire server.

1. Open a terminal and go to the Example/server directory
2. Install Patchwire using npm install patchwire@0.2.0 if you haven't done so already
3. Run the server using node example.js

Your server should now be running locally on localhost:3001.

Client Side

Next setup the iOS client. For this example, we're using two iOS simulators that will have a build of the chat app.

1. Open Patchwire-iOS.xcodeproj using Xcode
2. Select an iOS simulator (ex. iPhone 6s)
3. Hit run (⌘R)
4. Stop the simulator (⌘.)
5. Repeat step 2, 3, and 4 but select another simulator (ex. iPhone 6s Plus)
6. Close all simulators
7. Open a terminal and: cd /Applications/Xcode.app/Contents/Developer/Applications
8. Type open -n Simulator.app
9. Repeat step 8 (a warning will pop up, ignore it)
10. On the second simulator, under Hardware > Device select a device with the chat app installed (ex. if the first simulator is an iPhone 6s Plus, select iPhone 6s)
11. Run the chat app on both devices.

Result:

License

patchwire-ios is released under the MIT license. See LICENSE for details.