Multipeer Connectivity framework on OS X and iOS

gistfile1.swift

//On iOS

import UIKit
import MultipeerConnectivity
class ViewController: UIViewController {
    var _session: MCSession!
    var _peerID: MCPeerID!
    var _browser: MCNearbyServiceBrowser!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        _peerID = MCPeerID(displayName: "TryOniOS")
        _session = MCSession(peer: _peerID)
        _session.delegate = self
        _browser = MCNearbyServiceBrowser(peer: _peerID, serviceType: "TryMC")
        _browser.delegate = self
        _browser.startBrowsingForPeers()
        // Do any additional setup after loading the view, typically from a nib.
        
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}

extension ViewController: MCNearbyServiceBrowserDelegate{
    func browser(browser: MCNearbyServiceBrowser, foundPeer peerID: MCPeerID, withDiscoveryInfo info: [String : String]?){
        browser.invitePeer(peerID, toSession: _session, withContext: nil, timeout: 10)
    }
    func browser(browser: MCNearbyServiceBrowser, lostPeer peerID: MCPeerID){
        NSLog("lost peerID: \(peerID.displayName)")
    }
    
    func browser(browser: MCNearbyServiceBrowser, didNotStartBrowsingForPeers error: NSError){
        NSLog("Didn't start to browser, and the error is: \(error.debugDescription)")
    }
    
}
extension ViewController: MCSessionDelegate {
    func session(session: MCSession, peer peerID: MCPeerID, didChangeState state: MCSessionState){
        var logString = ""
        switch state{
        case .Connected:
            logString = "Connected"
        case .NotConnected:
            logString = "NotConnected"
        case .Connecting:
            logString = "Connecting"
            //        default: break
        }
        NSLog("\(peerID.displayName)的状态改变为:\(logString)")
    }
    
    func session(session: MCSession, didReceiveData data: NSData, fromPeer peerID: MCPeerID){
        
    }
    
    func session(session: MCSession, didReceiveStream stream: NSInputStream, withName streamName: String, fromPeer peerID: MCPeerID){
        
    }
    
    func session(session: MCSession, didStartReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, withProgress progress: NSProgress){
        
    }
    
    func session(session: MCSession, didFinishReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, atURL localURL: NSURL, withError error: NSError?){
        
    }
    func session(session: MCSession, didReceiveCertificate certificate: [AnyObject]?, fromPeer peerID: MCPeerID, certificateHandler: (Bool) -> Void){
        
    }

    
}

//on OS X
import Cocoa
import MultipeerConnectivity
class ViewController: NSViewController {
    var _advertiser: MCNearbyServiceAdvertiser!
    var _session: MCSession!
    var _peerID: MCPeerID!
    override func viewDidLoad() {
        super.viewDidLoad()
        _peerID = MCPeerID(displayName: "TryOnMac")
        _session = MCSession(peer: _peerID)
        _session.delegate = self
        _advertiser = MCNearbyServiceAdvertiser(peer: _peerID, discoveryInfo: nil, serviceType: "TryMC")
        _advertiser.delegate = self
        _advertiser.startAdvertisingPeer()
    }

    override var representedObject: AnyObject? {
        didSet {
        // Update the view, if already loaded.
        }
    }


    
}


extension ViewController: MCNearbyServiceAdvertiserDelegate{
    func advertiser(advertiser: MCNearbyServiceAdvertiser, didReceiveInvitationFromPeer peerID: MCPeerID, withContext context: NSData?, invitationHandler: (Bool, MCSession) -> Void){
        //let accept = _session.myPeerID.hashValue != peerID.hashValue
        invitationHandler(true, _session)

    }
    
    func advertiser(advertiser: MCNearbyServiceAdvertiser, didNotStartAdvertisingPeer error: NSError){
        NSLog("didn't start to advertise, and the error is \(error.debugDescription)")
    }
    
}

extension ViewController: MCSessionDelegate {
    func session(session: MCSession, peer peerID: MCPeerID, didChangeState state: MCSessionState){
        var logString = ""
        switch state{
        case .Connected:
            logString = "Connected"
            break
        case .NotConnected:
            logString = "NotConnected"
            break
        case .Connecting:
            logString = "Connecting"
            break
            //        default: break
        }
        NSLog("\(peerID.displayName) current state is :\(logString)")
    }
    
    func session(session: MCSession, didReceiveData data: NSData, fromPeer peerID: MCPeerID){
        
    }
    
    func session(session: MCSession, didReceiveStream stream: NSInputStream, withName streamName: String, fromPeer peerID: MCPeerID){
        
    }
    
    func session(session: MCSession, didStartReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, withProgress progress: NSProgress){
        
    }
    
    func session(session: MCSession, didFinishReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, atURL localURL: NSURL, withError error: NSError?){
        
    }
    func session(session: MCSession, didReceiveCertificate certificate: [AnyObject]?, fromPeer peerID: MCPeerID, certificateHandler: (Bool) -> Void){
        
    }
    
    
}