Elixxir dApps Swift SDK

📱 Demo

Refer to this demo to see an example of how to build an app with the SDK to send E2E messages and send RestLike messsage.

Also you can checkout included example iOS application.

📖 Documentation

You can find full documentation with step by step guide here

🚀 Quick Start

Add ElixxirDAppsSDK library as a dependency to your project using Swift Package Manager.

▶️ Instantiating cMix

You can use a convenient CMixManager wrapper to manage cMix stored on disk:

let cMixManager: CMixManager = .live(
  passwordStorage: .init(
    save: { password in
      // securely save provided password
    },
    load: {
      // load securely stored password
    }
  )
)

let cMix: CMix
if cMixManager.hasStorage() {
  cMix = try cMixManager.load()
} else {
  cMix = try cMixManager.create()
}

Check out included example iOS application for the PasswordStorage implementation that uses the iOS keychain.

▶️ Connecting to the network

Start network follower:

try cMix.startNetworkFollower(timeoutMS: 10_000)

Wait until connected:

let isNetworkHealthy = try cMix.waitForNetwork(timeoutMS: 30_000)

▶️ Making a new reception identity

Use the cMix to make a new reception identity:

let myIdentity = try cMix.makeReceptionIdentity()

▶️ Create new E2E

let login: Login = .live
let e2e = try login(
  cMixId: cMix.getId(),
  identity: myIdentity
)

▶️ Connecting to remote

Perform auth key negotiation with the given recipient to get the Connection:

let connection = try cMix.connect(
  withAuthentication: false,
  e2eId: e2e.getId(),
  recipientContact: ...
)

Pass true for the withAuthentication parameter if you want to prove id ownership to remote as well.

▶️ Sending messages

Send a message to the connection's partner:

let sendReport = try connection.send(
  messageType: 1,
  payload: ...
)

Check if the round succeeded:

try cMix.waitForRoundResult(
  roundList: try sendReport.encode(),
  timeoutMS: 30_000,
  callback: .init { result in
    switch result {
    case .delivered(let roundResults):
      ...
    case .notDelivered(let timedOut):
      ...
    }
  }
)

▶️ Receiving messages

Use connection's message listener to receive messages from partner:

try connection.registerListener(
  messageType: 1,
  listener: .init { message in
    ...
  }
)

🛠️ Development

Open ElixxirDAppsSDK.xcworkspace in Xcode (≥13.4).

Project structure

ElixxirDAppsSDK [Xcode Workspace]
 ├─ elixxir-dapps-sdk-swift [Swift Package]
 |   └─ ElixxirDAppsSDK [Library]
 └─ Example [Xcode Project]
     ├─ ExampleApp (iOS) [iOS App Target]
     ├─ example-app [Swift Package]
     |   ├─ AppFeature [Library]
     |   └─ ...
     └─ example-app-icon [Swift Package] 
         ├─ ExampleAppIcon [Library]
         └─ example-app-icon-export [Executable]

Build schemes

• Use exlixxir-dapps-sdk-swift scheme to build and test the package with ElixxirDAppsSDK library.
• Use ExampleApp (iOS) to build and run the example app.
• Use example-app scheme to build and test the example app package with all contained libraries.
• Use ExampleAppIcon scheme with macOS target to build and preview the example app icon.
• Use example-app-icon-export scheme with macOS target to build and update the example app icon.
• Use other schemes, like AppFeature, for building and testing individual libraries in isolation.

📄 License

Copyright © 2022 xx network SEZC

License