First version of the Bonjour-enabled discovery service via wifi

Classes/Helpers/PeerBrowser.h

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+//
+//  PeerBrowser.h
+//  bluewoki
+//
+//  Created by Adrian on 5/21/11.
+//  Copyright 2011 akosma software. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@class PeerProxy;
+
+@interface PeerBrowser : NSObject <NSNetServiceBrowserDelegate>
+
+@property (nonatomic, retain) NSMutableArray *peerArray;
+@property (nonatomic, retain) NSNetServiceBrowser *peerBrowser;
+
+- (void)startSearchingForPeers;
+- (void)stopSearchingForPeers;
+- (NSInteger)connectedPeersCount;
+- (PeerProxy *)peerAtIndex:(NSUInteger)index;
+
+@end

Classes/Helpers/PeerBrowser.m

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+//
+//  PeerBrowser.m
+//  bluewoki
+//
+//  Created by Adrian on 5/21/11.
+//  Copyright 2011 akosma software. All rights reserved.
+//
+
+#import "PeerBrowser.h"
+#import "Protocol.h"
+#import "PeerProxy.h"
+
+
+@implementation PeerBrowser
+
+@synthesize peerArray = _peerArray;
+@synthesize peerBrowser = _peerBrowser;
+
+- (id)init
+{
+    self = [super init];
+    if (self)
+    {
+        _peerArray = [[NSMutableArray alloc] init];
+    }
+    return self;
+}
+
+- (void)dealloc
+{
+    [self stopSearchingForPeers];
+
+    [_peerArray release];
+
+    [super dealloc];
+}
+
+#pragma mark - Public methods
+
+- (NSInteger)connectedPeersCount
+{
+    return [self.peerArray count];
+}
+
+- (void)startSearchingForPeers
+{
+    self.peerBrowser = [[[NSNetServiceBrowser alloc] init] autorelease];
+    [self.peerBrowser setDelegate:self];
+    [self.peerBrowser searchForServicesOfType:BLUEWOKI_PROTOCOL_NAME
+                                       inDomain:@""];
+}
+
+- (void)stopSearchingForPeers
+{
+    [self.peerBrowser stop];
+    self.peerBrowser = nil;
+}
+
+- (PeerProxy *)peerAtIndex:(NSUInteger)index
+{
+    return [self.peerArray objectAtIndex:index];
+}
+
+#pragma mark - NSNetServiceBrowser delegate methods
+
+- (void)netServiceBrowser:(NSNetServiceBrowser *)browser
+           didFindService:(NSNetService *)service
+               moreComing:(BOOL)more
+{
+    if (!more)
+    {
+        PeerProxy *peer = [PeerProxy proxyWithService:service];
+        [peer connect];
+        [self.peerArray addObject:peer];
+
+        [[NSNotificationCenter defaultCenter] postNotificationName:@"UPDATE_SCREEN" object:self];
+    }
+}
+
+- (void)netServiceBrowser:(NSNetServiceBrowser *)browser
+         didRemoveService:(NSNetService *)service
+               moreComing:(BOOL)more
+{
+    if (!more)
+    {
+        PeerProxy *peerToRemove = nil;
+        for (PeerProxy *proxy in self.peerArray)
+        {
+            if ([proxy.serviceName isEqualToString:[service name]])
+            {
+                peerToRemove = proxy;
+            }
+        }
+
+        if (peerToRemove != nil)
+        {
+            [self.peerArray removeObject:peerToRemove];
+        }
+
+        [[NSNotificationCenter defaultCenter] postNotificationName:@"UPDATE_SCREEN" object:self];
+    }
+}
+
+@end

Classes/Helpers/PeerProxy.h

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+//
+//  PeerProxy.h
+//  bluewoki
+//
+//  Created by Adrian on 5/21/11.
+//  Copyright 2011 akosma software. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import <GameKit/GameKit.h>
+#import <AVFoundation/AVFoundation.h>
+#import <AudioToolbox/AudioToolbox.h>
+#import "MessageBrokerDelegate.h"
+#import "PeerProxyDelegate.h"
+
+@interface PeerProxy : NSObject <NSNetServiceDelegate,
+                                 MessageBrokerDelegate,
+                                 GKPeerPickerControllerDelegate,
+                                 GKSessionDelegate,
+                                 GKVoiceChatClient>
+
+@property (nonatomic, retain) NSNetService *netService;
+@property (nonatomic, retain) GKSession *chatSession;
+@property (nonatomic, getter = isConnected) BOOL connected;
+@property (nonatomic, retain) MessageBroker *messageBroker;
+@property (nonatomic, assign) id<PeerProxyDelegate> delegate;
+@property (nonatomic, readonly) NSString *serviceName;
+
++ (id)proxyWithService:(NSNetService *)service;
+- (id)initWithService:(NSNetService *)service;
+- (void)connect;
+- (void)startService;
+- (void)stopService;
+- (void)sendVoiceCallRequest;
+- (void)answerToCallFromPeerID:(NSString *)peerID;
+
+@end