multipeer

multipeer

//
//  NMPeerToPeer.m
//  Next Meal
//
//  Created by Anson Liu on 6/7/14.
//  Copyright (c) 2014 Apparent Etch. All rights reserved.
//

#import "NMPeerToPeer.h"

@implementation NMPeerToPeer

- (NMPeerToPeer*)initWithTarget:(id)obj {
    self = [super init];
    if (self) {
        target = obj;
    }
    
    localPeerID = [[MCPeerID alloc] initWithDisplayName:[[UIDevice currentDevice] name]];
    
    //MCNearbyServiceAdvertiser *advertiser = [[MCNearbyServiceAdvertiser alloc] initWithPeer:localPeerID discoveryInfo:[NSDictionary dictionaryWithObject:[NSKeyedUnarchiver unarchiveObjectWithData:[ReadWriteData readFile:lastUpdatedFilename]] forKey:@"last-updated"] serviceType:XXServiceType];
    MCNearbyServiceAdvertiser *advertiser = [[MCNearbyServiceAdvertiser alloc] initWithPeer:localPeerID discoveryInfo:nil serviceType:XXServiceType];
    advertiser.delegate = self;
    [advertiser startAdvertisingPeer];
    NSLog(@"advertser started");
    
    MCNearbyServiceBrowser* browser = [[MCNearbyServiceBrowser alloc] initWithPeer:localPeerID serviceType:XXServiceType];
    browser.delegate = self;
    [browser startBrowsingForPeers];
    NSLog(@"browser started");
    
    return self;
}

#pragma mark - MCNearbyServerAdvertiserDelegate Methods

- (void)advertiser:(MCNearbyServiceAdvertiser *)advertiser didNotStartAdvertisingPeer:(NSError *)error {
    NSLog(@"advertiser did not start advertising due to error %@", [error localizedDescription]);
}

- (void)advertiser:(MCNearbyServiceAdvertiser *)advertiser didReceiveInvitationFromPeer:(MCPeerID *)peerID withContext:(NSData *)context invitationHandler:(void (^)(BOOL, MCSession *))invitationHandler {
    
    NSLog(@"advertiser recieved invitation from peer %@", peerID);
    
    MCSession* session = [[MCSession alloc] initWithPeer:localPeerID securityIdentity:nil encryptionPreference:MCEncryptionNone];
    session.delegate = self;
    
    invitationHandler(YES, session);
    
    NSError* error;
    [session sendData:[ReadWriteData readFile:menuFilename] toPeers:[NSArray arrayWithObject:localPeerID] withMode:MCSessionSendDataUnreliable error:&error];
}

#pragma mark - MCNearbyServerBrowserDelegate Methods

- (void)browser:(MCNearbyServiceBrowser *)browser didNotStartBrowsingForPeers:(NSError *)error {
    NSLog(@"browser did not start browsing due to error %@", [error localizedDescription]);
}

- (void)browser:(MCNearbyServiceBrowser *)browser foundPeer:(MCPeerID *)peerID withDiscoveryInfo:(NSDictionary *)info {
    
    NSLog(@"browser found peer %@", peerID);
    
    //if ([info objectForKey:@"last-updated"] && [[info objectForKey:@"last-updated"] timeIntervalSinceDate:[NSKeyedUnarchiver unarchiveObjectWithData:[ReadWriteData readFile:lastUpdatedFilename]]] > updateInterval) { //local menu is too old
    
        NSLog(@"found peer has updated menus");
        
        MCSession* session = [[MCSession alloc] initWithPeer:localPeerID securityIdentity:nil encryptionPreference:MCEncryptionNone];
    
        session.delegate = self;
    
        [browser invitePeer:peerID toSession:session withContext:nil timeout:15];
    //}
}

- (void)browser:(MCNearbyServiceBrowser *)browser lostPeer:(MCPeerID *)peerID {
    NSLog(@"Peer %@ lost", peerID);
}

#pragma mark - MCSessionDelegate Methods
- (void)session:(MCSession *)session didReceiveData:(NSData *)data fromPeer:(MCPeerID *)peerID {
    NSLog(@"recieved data from %@", peerID);
    /*
    [ReadWriteData saveFile:data withFilename:menuFilename];
    [ReadWriteData saveFile:[NSKeyedArchiver archivedDataWithRootObject:[NSDate date]] withFilename:lastUpdatedFilename];
     */
    
    /*
    if ([target respondsToSelector:@selector(loadLocalData:)])
        [target performSelector:@selector(loadLocalData:) withObject:NO];
     */
    
    [session disconnect];
}

- (void)session:(MCSession *)session didStartReceivingResourceWithName:(NSString *)resourceName fromPeer:(MCPeerID *)peerID withProgress:(NSProgress *)progress {
    
}

- (void)session:(MCSession *)session didFinishReceivingResourceWithName:(NSString *)resourceName fromPeer:(MCPeerID *)peerID atURL:(NSURL *)localURL withError:(NSError *)error {
    
}

- (void)session:(MCSession *)session didReceiveStream:(NSInputStream *)stream withName:(NSString *)streamName fromPeer:(MCPeerID *)peerID {
    
}

- (void)session:(MCSession *)session peer:(MCPeerID *)peerID didChangeState:(MCSessionState)state {
    NSLog(@"session state change with peer %@ and state %d", peerID, state);
    
    if (state == MCSessionStateNotConnected) {
        [session disconnect];
    }
}

- (void) session:(MCSession *)session didReceiveCertificate:(NSArray *)certificate fromPeer:(MCPeerID *)peerID certificateHandler:(void (^)(BOOL accept))certificateHandler
{
    certificateHandler(YES);
}
@end