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MPCManager from AppCoda tutorial (https://www.appcoda.com/chat-app-swift-tutorial/)
//
// MPCManager.swift
// MPCRevisited
//
// Created by Gabriel Theodoropoulos on 11/1/15.
// Copyright (c) 2015 Appcoda. All rights reserved.
//
import UIKit
import MultipeerConnectivity
protocol MPCManagerDelegate {
func foundPeer()
func lostPeer()
func invitationWasReceived(fromPeer: String)
func connectedWithPeer(peerID: MCPeerID)
}
class MPCManager: NSObject, MCSessionDelegate, MCNearbyServiceBrowserDelegate, MCNearbyServiceAdvertiserDelegate
{
var delegate: MPCManagerDelegate?
var session: MCSession!
var peer: MCPeerID!
var browser: MCNearbyServiceBrowser!
var advertiser: MCNearbyServiceAdvertiser!
var foundPeers = [MCPeerID]()
var invitationHandler: ((Bool, MCSession?)->Void)!
override init()
{
super.init()
peer = MCPeerID(displayName: UIDevice.current.name)
session = MCSession(peer: peer)
session.delegate = self
browser = MCNearbyServiceBrowser(peer: peer, serviceType: "appcoda-mpc")
browser.delegate = self
advertiser = MCNearbyServiceAdvertiser(peer: peer, discoveryInfo: nil, serviceType: "appcoda-mpc")
advertiser.delegate = self
}
public func session(_ session: MCSession, didFinishReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, at localURL: URL, withError error: Error?)
{
print("Finished receiving resource from " + peerID.displayName)
}
public func advertiser(_ advertiser: MCNearbyServiceAdvertiser, didReceiveInvitationFromPeer peerID: MCPeerID, withContext context: Data?, invitationHandler: @escaping (Bool, MCSession?) -> Void)
{
print("Received invitation from " + peerID.displayName)
}
public func browser(_ browser: MCNearbyServiceBrowser, foundPeer peerID: MCPeerID, withDiscoveryInfo info: [String : String]?)
{
print("Found peer: " + peerID.displayName)
}
// MARK: MCNearbyServiceBrowserDelegate method implementation
func browser(browser: MCNearbyServiceBrowser!, foundPeer peerID: MCPeerID!, withDiscoveryInfo info: [NSObject : AnyObject]!)
{
foundPeers.append(peerID)
delegate?.foundPeer()
}
func browser(_ browser: MCNearbyServiceBrowser, lostPeer peerID: MCPeerID)
{
for (index, aPeer) in foundPeers.enumerated()
{
if aPeer == peerID
{
foundPeers.remove(at: index)
break
}
}
delegate?.lostPeer()
}
func browser(_ browser: MCNearbyServiceBrowser, didNotStartBrowsingForPeers error: Error)
{
print(error.localizedDescription)
}
// MARK: MCNearbyServiceAdvertiserDelegate method implementation
func advertiser(advertiser: MCNearbyServiceAdvertiser!, didReceiveInvitationFromPeer peerID: MCPeerID!, withContext context: Data!, invitationHandler: ((Bool, MCSession?) -> Void)!)
{
self.invitationHandler = invitationHandler
delegate?.invitationWasReceived(fromPeer: peerID.displayName)
}
func advertiser(_ advertiser: MCNearbyServiceAdvertiser, didNotStartAdvertisingPeer error: Error)
{
print(error.localizedDescription)
}
// MARK: MCSessionDelegate method implementation
func session(_ session: MCSession, peer peerID: MCPeerID, didChange state: MCSessionState)
{
switch state{
case MCSessionState.connected:
print("Connected to session: \(session)")
delegate?.connectedWithPeer(peerID: peerID)
case MCSessionState.connecting:
print("Connecting to session: \(session)")
default:
print("Did not connect to session: \(session)")
}
}
func session(_ session: MCSession, didReceive data: Data, fromPeer peerID: MCPeerID) {
let dictionary: [String: AnyObject] = ["data": data as AnyObject, "fromPeer": peerID]
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "receivedMPCDataNotification"), object: dictionary)
}
func session(_ session: MCSession, didStartReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, with progress: Progress) { }
func session(session: MCSession!, didFinishReceivingResourceWithName resourceName: String!, fromPeer peerID: MCPeerID!, atURL localURL: NSURL!, withError error: NSError!) { }
func session(_ session: MCSession, didReceive stream: InputStream, withName streamName: String, fromPeer peerID: MCPeerID) { }
// MARK: Custom method implementation
func sendData(dictionaryWithData dictionary: Dictionary<String, String>, toPeer targetPeer: MCPeerID) -> Bool {
let dataToSend = NSKeyedArchiver.archivedData(withRootObject: dictionary)
let peersArray = NSArray(object: targetPeer)
do {
try session.send(dataToSend, toPeers: peersArray as! [MCPeerID], with: MCSessionSendDataMode.reliable)
}
catch _ {
return false
}
return true
}
}
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