Lihat Koneksi Di Sekitar tentang cara menyiapkan Koneksi Di Sekitar.
Pesan Singkat
Nearby Connections memungkinkan kliennya mengirim data dalam 131 byte tanpa membuat koneksi ke perangkat jarak jauh. Lihat alur di bawah ini untuk mengetahui cara mentransfer pesan dalam 131 byte.
Penayang
class Publisher {
let connectionManager: ConnectionManager
let advertiser: Advertiser
init() {
connectionManager = ConnectionManager(serviceID: <SERVICE_ID>, strategy: .pointToPoint)
advertiser = Advertiser(connectionManager: connectionManager)
}
func startPublishing() {
advertiser.startAdvertising(using: <MESSAGE_DATA>)
}
func stopPublishing() {
advertiser.stopAdvertising()
}
}
Subscriber
class Subscriber {
let connectionManager: ConnectionManager
let discoverer: Discoverer
init() {
connectionManager = ConnectionManager(serviceID: <SERVICE_ID>, strategy: .pointToPoint)
discoverer = Discoverer(connectionManager: connectionManager)
discoverer.delegate = self
}
func startSubscription() {
discoverer.startDiscovery()
}
func stopSubscription() {
discoverer.stopDiscovery()
}
}
extension Subscriber: DiscovererDelegate {
func discoverer(_ discoverer: Discoverer, didFind endpointID: EndpointID, with context: Data) {
// A remote advertising endpoint is found.
print(context) // `context` is the published message data.
}
func discoverer(_ discoverer: Discoverer, didLose endpointID: EndpointID) {
// A previously discovered endpoint has gone away.
}
}
Pesan Panjang
Untuk pesan yang lebih besar dari 131 byte, koneksi antar perangkat harus dibuat untuk mentransfer pesan. Lihat alur di bawah untuk mengetahui cara mentransfer data besar menggunakan Koneksi Di Sekitar.
Penayang
class Publisher {
let connectionManager: ConnectionManager
let advertiser: Advertiser
init() {
connectionManager = ConnectionManager(serviceID: <SERVICE_ID>, strategy: .pointToPoint)
connectionManager.delegate = self
advertiser = Advertiser(connectionManager: connectionManager)
advertiser.delegate = self
}
func startPublishing() {
advertiser.startAdvertising(using: <ENDPOINT_INFO>)
}
func stopPublishing() {
advertiser.stopAdvertising()
}
}
extension Publisher: ConnectionManagerDelegate {
func connectionManager(
_ connectionManager: ConnectionManager, didReceive data: Data, withID payloadID: PayloadID,
from endpointID: EndpointID) {
// We can ignore implementation, because we are the publisher.
}
func connectionManager(
_ connectionManager: ConnectionManager, didReceive stream: InputStream,
withID payloadID: PayloadID,
from endpointID: EndpointID, cancellationToken token: CancellationToken) {
// We can ignore implementation, because we are the publisher.
}
func connectionManager(
_ connectionManager: ConnectionManager, didStartReceivingResourceWithID payloadID: PayloadID,
from endpointID: EndpointID, at localURL: URL, withName name: String,
cancellationToken token: CancellationToken) {
// We can ignore implementation, because we are the publisher.
}
func connectionManager(
_ connectionManager: ConnectionManager, didReceiveTransferUpdate update: TransferUpdate,
from endpointID: EndpointID, forPayload payloadID: PayloadID) {
// We can ignore implementation, because we are the publisher.
}
func connectionManager(
_ connectionManager: ConnectionManager, didChangeTo state: ConnectionState,
for endpointID: EndpointID) {
switch state {
case .connecting:
// A connection to the remote endpoint is currently being established.
case .connected:
// We're connected! Can now start sending and receiving data.
connectionManager.send(<MESSAGE_DATA>, to: [endpointID])
case .disconnected:
// We've been disconnected from this endpoint. No more data can be sent or received.
case .rejected:
// The connection was rejected by one or both sides.
}
}
}
extension Publisher: AdvertiserDelegate {
func advertiser(
_ advertiser: Advertiser, didReceiveConnectionRequestFrom endpointID: EndpointID,
with context: Data, connectionRequestHandler: @escaping (Bool) -> Void) {
// Automatically accept any incoming connection requests.
connectionRequestHandler(true)
}
}
Subscriber
class Subscriber {
let connectionManager: ConnectionManager
let discoverer: Discoverer
init() {
connectionManager = ConnectionManager(serviceID: <SERVICE_ID>, strategy: .pointToPoint)
connectionManager.delegate = self
discoverer = Discoverer(connectionManager: connectionManager)
discoverer.delegate = self
}
func startSubscription() {
discoverer.startDiscovery()
}
func stopSubscription() {
discoverer.stopDiscovery()
}
}
extension Subscriber: ConnectionManagerDelegate {
func connectionManager(
_ connectionManager: ConnectionManager, didReceive data: Data, withID payloadID: PayloadID,
from endpointID: EndpointID) {
// This always gets the full data of the payload.
print(data)
}
func connectionManager(
_ connectionManager: ConnectionManager, didReceive stream: InputStream,
withID payloadID: PayloadID,
from endpointID: EndpointID, cancellationToken token: CancellationToken) {
// We can ignore implementation because we only care about bytes payloads.
}
func connectionManager(
_ connectionManager: ConnectionManager, didStartReceivingResourceWithID payloadID: PayloadID,
from endpointID: EndpointID, at localURL: URL, withName name: String,
cancellationToken token: CancellationToken) {
// We can ignore implementation because we only care about bytes payloads.
}
func connectionManager(
_ connectionManager: ConnectionManager, didReceiveTransferUpdate update: TransferUpdate,
from endpointID: EndpointID, forPayload payloadID: PayloadID) {
// Bytes payloads are sent as a single chunk, so you'll receive TransferUpdate.success
// immediately.
}
func connectionManager(
_ connectionManager: ConnectionManager, didChangeTo state: ConnectionState,
for endpointID: EndpointID) {
switch state {
case .connecting:
// A connection to the remote endpoint is currently being established.
case .connected:
// We're connected! Can now start sending and receiving data.
case .disconnected:
// We've been disconnected from this endpoint. No more data can be sent or received.
case .rejected:
// The connection was rejected by one or both sides.
}
}
}
extension Subscriber: DiscovererDelegate {
func discoverer(_ discoverer: Discoverer, didFind endpointID: EndpointID, with context: Data) {
// An endpoint was found. We request a connection to it.
discoverer.requestConnection(to: endpointID, using: <ENDPOINT_INFO>)
}
func discoverer(_ discoverer: Discoverer, didLose endpointID: EndpointID) {
// A previously discovered endpoint has gone away.
}
}