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sswg:incubating|94x20 License Build Swift

APNSwift

A non-blocking Swift module for sending remote Apple Push Notification requests to APNS built on http/2, SwiftNIO for use on server side swift platforms.

Installation

To install APNSwift, just add the package as a dependency in your Package.swift.

dependencies: [
    .package(url: "https://github.com/kylebrowning/APNSwift.git", .upToNextMinor(from: "1.3.0"))
]

Getting Started

struct BasicNotification: APNSwiftNotification {
    let aps: APNSwiftPayload
}
let group = MultiThreadedEventLoopGroup(numberOfThreads: 1)
var logger = Logger(label: "com.apnswift")
logger.logLevel = .debug
let apnsConfig = try APNSwiftConfiguration(
    authenticationMethod: .jwt(
        key: .private(filePath: "/Users/kylebrowning/Desktop/AuthKey_9UC9ZLQ8YW.p8"),
        keyIdentifier: "9UC9ZLQ8YW",
        teamIdentifier: "ABBM6U9RM5"
    ),
    topic: "com.grasscove.Fern",
    environment: .sandbox,
    logger: logger
)

let apns = try APNSwiftConnection.connect(configuration: apnsConfig, on: group.next()).wait()
let aps = APNSwiftPayload(alert: .init(title: "Hey There", subtitle: "Subtitle", body: "Body"), hasContentAvailable: true)
try apns.send(BasicNotification(aps: aps), pushType: .alert, to: "98AAD4A2398DDC58595F02FA307DF9A15C18B6111D1B806949549085A8E6A55D").wait()
try apns.close().wait()
try group.syncShutdownGracefully()
exit(0)

APNSwiftConfiguration

APNSwiftConfiguration is a structure that provides the system with common configuration.

let apnsConfig = try APNSwiftConfiguration(
    authenticationMethod: .jwt(
        key: .private(filePath: "/Users/kylebrowning/Desktop/AuthKey_9UC9ZLQ8YW.p8"),
        keyIdentifier: "9UC9ZLQ8YW",
        teamIdentifier: "ABBM6U9RM5"
    ),
    topic: "com.grasscove.Fern",
    environment: .sandbox,
    logger: logger
)

Example APNSwiftConfiguration

let signer = ...
let apnsConfig = try APNSwiftConfiguration(keyIdentifier: "9UC9ZLQ8YW",
                                   teamIdentifier: "ABBM6U9RM5",
                                   signer: signer),
                                   topic: "com.grasscove.Fern",
                                   environment: .sandbox)

APNSwiftConnection

APNSwiftConnection is a class with methods thats provides a wrapper to NIO's ClientBootstrap. The swift-nio-http2 dependency is utilized here. It also provides a function to send a notification to a specific device token string.

Example APNSwiftConnection

let apnsConfig = ...
let apns = try APNSwiftConnection.connect(configuration: apnsConfig, on: group.next()).wait()

APNSwiftAlert

APNSwiftAlert is the actual meta data of the push notification alert someone wishes to send. More details on the specifics of each property are provided here. They follow a 1-1 naming scheme listed in Apple's documentation

Example APNSwiftAlert

let alert = APNSwiftAlert(title: "Hey There", subtitle: "Full moon sighting", body: "There was a full moon last night did you see it")

APNSwiftPayload

APNSwiftPayload is the meta data of the push notification. Things like the alert, badge count. More details on the specifics of each property are provided here. They follow a 1-1 naming scheme listed in Apple's documentation

Example APNSwiftPayload

let alert = ...
let aps = APNSwiftPayload(alert: alert, badge: 1, sound: .normal("cow.wav"))

Custom Notification Data

Apple provides engineers with the ability to add custom payload data to each notification. In order to facilitate this we have the APNSwiftNotification.

Example

struct AcmeNotification: APNSwiftNotification {
    let acme2: [String]
    let aps: APNSwiftPayload

    init(acme2: [String], aps: APNSwiftPayload) {
        self.acme2 = acme2
        self.aps = aps
    }
}

let apns: APNSwiftConnection: = ...
let aps: APNSwiftPayload = ...
let notification = AcmeNotification(acme2: ["bang", "whiz"], aps: aps)
let res = try apns.send(notification, to: "de1d666223de85db0186f654852cc960551125ee841ca044fdf5ef6a4756a77e").wait()

Using PEM instead of P8

Note: this is blocking

var apnsConfig = try APNSwiftConfiguration(
    authenticationMethod: .tls(
        privateKeyPath: "/Users/kylebrowning/Projects/swift/Fern/development_com.grasscove.Fern.pkey",
        pemPath: "/Users/kylebrowning/Projects/swift/Fern/development_com.grasscove.Fern.pem"
    ),
    topic: "com.grasscove.Fern",
    environment: .sandbox
)
let apns = try APNSwiftConnection.connect(configuration: apnsConfig, on: group.next()).wait()

Need a completely custom arbtirary payload and dont like being typecast?

APNSwift provides the ability to send raw payloads. You can use Data, ByteBuffer, DispatchData, Array Though this is to be used with caution. APNSwift cannot gurantee delivery if you do not have the correct payload. For more information see: Creating APN Payload

let notificationJsonPayload = ...
let data: Data = try! encoder.encode(notificationJsonPayload)
try apns.send(raw: data, pushType: .alert, to: "<DEVICETOKEN>")

Original pitch and discussion on API