GameKit-GKPeerPickerController
- Peer-to-Peer的连接
Session：会话iPhone通过Session互相发送数据读取数据
Peer：每一部网络中的设备算一个节点
第一节 发现其他的节点：
会话要么把自己当成 服务器/客户端 中的一种，要么做一个节点即当服务器又当客户端
- 实现一个Server
initWithSessionID:displayName:sessionMode:GKSessionModeServer|GKSessionModePeer
服务器收到客户请求后，回调 session:didReceiveConnectionRequestFromPeer:
委托类 接受请求
acceptConnectionFromPeer:error:
委托类 拒绝请求
denyConnectionFromPeer:
成功建立连接后：回调委托类函数：session:peer:didChangeState - 连接到一个服务
initWithSessionID:displayName:sessionMode: GKSessionModeClient|GKSessionModePeer
发现可用的服务后，回调委托类函数：session:peer:didChangeState: 提供自己的PeerID
发送请求：connectToPeer:withTimeout
成功建立连接：回调：session:peer:didChangeState
- 交换数据
- 发送：
sendDataToAllPeers:withDataMode:error:
sendData:toPeer:withDataMode:error - 接受：
receiveData:fromPeer:inSession:context:
setDataReceivehandler:withContext:
第三节
断开节点：
disconnectPeerFromAllPeers:
回调：session:peer:didChangeState:
第四节 清理：
移除数据处理器并释放会话
2.添加一个节点选择器
- 创建并初始化一个GKPeerPicerController
picker = [[GKPeerPickerController alloc] init]; - 附加委托
picker.delegate = self; - 配置可选网络 ( 默认蓝牙 ）
picker.connectionTypesMask = GKPeerPickerConnectionTypeNearby |
GKPeerPickerConnectionTypeOnline; - 若选择因特网连接，实现：
- (void)peerPickerController:(GKPeerPickerController *)picker
didSelectConnectionType:(GKPeerPickerConnectionType)type{
if (type == GKPeerPickerConnectionTypeOnline) {
picker.delegate = nil;
[picker dismiss];
[picker autorelease];
//implement your own internet user inter face here
}
}
- 实现委托的节点选择器
peerPickerController:(GKPeerPickerControlller )picker
sessionForConnectionType:(GKPeerPickerConnectionType)type
{
GKSession session = [[GKSession alloc]] initWithSessionID:myExampleSessionID displayName:myName sessionMode:GKSessionModePeer] ;
[session autorelease];
}
//在覆盖节点选择器的原有方法时实现此方法。
- 实现委托的peerPickerController:didConnectPeer:toSession:方法获得对配置好的session的所有权。
－ （void)peerPickerController:(GKPeerPickerController *)picker didConnectPeer:( NSString *)peerID toSession: (GKSession *)season{
// 使用Retain过的属性拥有这个session
self.gameSession = self;
// 假设我们的对象同样是委托类
session.delegate = self;
[session setDataReceiveHandler: self withContext:nil];
//除掉picker
picker.delegate = nil;
[picker dismiss];
[picker autorelease];
//开始你的游戏
}
7.实现取消连接的代理方法
- (void) peerPickerControllerDidCancel:(GKPeerPickerController *)picker
{
picker.delegate = nil;
//控制器自动取消对话界面
[picker autorelease];
}
- 显示对话
[picker show];
*使用Sessions
- 实现 会话代理的方法：session:didChangeState:
- (void) session:(GKSession *)session peer:(NSString *)peerID
didChangeState:(GKPeerConnectionState)state
{
switch ( state)
{
case GKPeerStateConnecte:
// 相关代码
break;
case GKPeerStateDisconnected:
//相关代码
break;
}
}
- 发送数据到其他Peer
- (void) mySendDataToPeers: (NSData *)data
{
[session sendDataToAllPeers: data withDataMode: GKSendDataReliable error: nil];
}
- 从其他节点接收数据
- (void) receiveData:(NSData *)data fromPeer: (NSString *)peer inSession:
(GKSession *)session context:(void *)context
{
//读取数据
}
- 清除会话
[session disconnectFromAllPeers];
session.availabel = NO;
[session setDataReceiveHandler: nil withContext: nil];
session.delegate = nil;
[session release];
MultipeerConnectivity
此框架是在iOS7以后推出，旨在替代GameKit下的GKPeerPickerController
firechat APP iOS端采用此框架
FFMCManager.h
#import <Foundation/Foundation.h>
#import <MultipeerConnectivity/MultipeerConnectivity.h>
@class FFUser;
@interface FFMCManager : NSObject
/** 是否可以重连 当后台、退出控制器则NO */
@property (nonatomic, assign) BOOL canInvite;
/** 用户数组变更 */
@property (nonatomic, copy) void(^usersArrayChangeBlock)(NSMutableArray *onlineUsersArray);
/** 单例对象 */
+ (instancetype)sharedManager;
/** 初始化 */
- (instancetype)initWithUser:(FFUser *)user;
/** 重新初始化 */
- (void)restart;
/** 发送聊天消息给所有用户 */
- (BOOL)sendMessageToAll:(NSData *)message;
/** 发送聊天消息给指定用户 */
- (BOOL)sendMessageToUser:(FFUser *)user message:(NSData *)message;
/** 发送资源给指定用户 */
- (void)sendSourceToPeer:(MCPeerID *)peerID url:(NSURL *)url fileID:(NSString *)fileID result:(void (^)(BOOL success))result;
/** 发送聊天图片给所有用户 */
- (void)sendImgToAll:(NSURL *)url result:(void (^)(BOOL success))result;
/** 发送聊天图片给指定用户 */
- (void)sendImgToUser:(FFUser *)user url:(NSURL *)url result:(void (^)(BOOL success))result;
/** 发送头像给所有用户 */
- (void)sendAvatarToAll;
/** 发送语音给所有用户 */
- (void)sendVoiceToAll:(NSURL *)url result:(void (^)(BOOL success))result;
/** 发送语音给指定用户 */
- (void)sendVoiceToUser:(FFUser *)user url:(NSURL *)url result:(void (^)(BOOL success))result;
/** 发送语音给所有用户 */
- (void)sendVideoToAll:(NSURL *)url result:(void (^)(BOOL success))result;
/** 发送视频给指定用户 */
- (void)sendVideoToUser:(FFUser *)user url:(NSURL *)url result:(void (^)(BOOL success))result;
@end
FFMCManager.m
/**
* serviceType 命名规则: 由ASCII字母、数字和“-”组成的短文本串，最多15个字符
* MCPeerID 代表用户信息
* MCSession 启用和管理Multipeer连接会话中的所有人之间的沟通。 通过Sesion发送和读取数据
* MCNearbyServiceBrowser 用于搜索附近的服务端，并可以对搜索到的服务端发出邀请加入某个会话中
* MCNearbyServiceAdvertiser 接收并处理请求连接的响应。有回调，告知有用户要与服务端设备连接，需自定义提示框及连接处理。
* MCAdvertiserAssistant 接收并处理请求连接的响应。无回调，会弹出默认提示框并处理连接。
* MCBrowserViewController 用于搜索附近的用户，是基于MCNearbyServiceBrowse的封装
*/
/**
* 1.通过MCPeer来生成节点信息
* 2.通过MCNearbyServiceAdvertiser发送广播，告诉别人这里有个节点可连接
* 3.通过MCNearbyServiceBrowser来搜索服务来找到发送广播的节点，并请求连接
* 4.当连接成功后便可以通过MCSession来进行消息的发送和读取。
*/
#import "FFMCManager.h"
@interface FFMCManager ()<MCSessionDelegate, MCNearbyServiceBrowserDelegate, MCNearbyServiceAdvertiserDelegate>
/** 当前会话 */
@property (nonatomic, strong) MCSession *session;
/** 搜索助手 */
@property (nonatomic, strong) MCNearbyServiceBrowser *browser;
/** 服务助手 */
@property (nonatomic, strong) MCNearbyServiceAdvertiser *advertiser;
/** 用户 */
@property (nonatomic, strong) MCPeerID *peerID;
/** 会话锁 */
@property (nonatomic, strong) NSLock *sessionLock;
/** 本人 */
@property (nonatomic, strong) FFUser *localUser;
/** 用户信息 */
@property (nonatomic, strong) NSMutableDictionary *usersInfoCache;
/** 在线用户 */
@property (nonatomic, strong) NSMutableArray *onlineUsersArray;
@end
@implementation FFMCManager
#pragma mark - 单例对象
static FFMCManager *_instance;
+ (instancetype)sharedManager {
return [[self alloc] init];
}
+ (instancetype)allocWithZone:(struct _NSZone *)zone {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
_instance = [super allocWithZone:zone];
});
return _instance;
}
- (id)copyWithZone:(NSZone *)zone {
return _instance;
}
- (id)mutableCopyWithZone:(NSZone *)zone {
return _instance;
}
#pragma mark 初始化
- (instancetype)initWithUser:(FFUser *)user
{
if (self = [super init]) {
_localUser = user;
_sessionLock = [[NSLock alloc] init];
[self restart];
[self addObserverActive];
}
return self;
}
#pragma mark 定义用户(本人)
- (void)initLocalUser
{
if (_peerID) {
_peerID = nil;
}
_usersInfoCache = [NSMutableDictionary dictionary];
_onlineUsersArray = [NSMutableArray array];
_peerID = [[MCPeerID alloc] initWithDisplayName:_localUser.localID];
[_usersInfoCache setObject:_localUser forKey:_localUser.localID];
}
#pragma mark 开始会话
- (void)startSession
{
[self stopSession];
_session = [[MCSession alloc] initWithPeer:_peerID securityIdentity:nil encryptionPreference:MCEncryptionNone];
_session.delegate = self;
}
#pragma mark 停止会话
- (void)stopSession
{
if (_session) {
[_session disconnect];
_session.delegate = nil;
_session = nil;
}
}
#pragma mark 开始广播
- (void)startAdvertise
{
[self stopAdvertise];
_localUser.timeStamp = DDYStrFormat(@"%lf",[[NSDate date] timeIntervalSince1970]);
_advertiser = [[MCNearbyServiceAdvertiser alloc] initWithPeer:_peerID discoveryInfo:_localUser.userInfo serviceType:FFService];
_advertiser.delegate = self;
[_advertiser startAdvertisingPeer];
}
#pragma mark 停止广播
- (void)stopAdvertise
{
if (_advertiser) {
[_advertiser stopAdvertisingPeer];
_advertiser.delegate = nil;
_advertiser = nil;
}
}
#pragma mark 开始搜索
- (void)startBrowse
{
[self stopBrowse];
_browser = [[MCNearbyServiceBrowser alloc] initWithPeer:_peerID serviceType:FFService];
_browser.delegate = self;
[_browser startBrowsingForPeers];
}
#pragma mark 停止搜索
- (void)stopBrowse
{
if (_browser) {
[_browser stopBrowsingForPeers];
_browser.delegate = nil;
_browser = nil;
}
}
#pragma mark 重新开始
- (void)restart
{
[self initLocalUser];
[self startSession];
[self startBrowse];
[self startAdvertise];
}
#pragma mark 邀请用户
- (void)inviteUser:(MCPeerID *)peerID
{
if (_browser) {
[_browser invitePeer:peerID toSession:_session withContext:nil timeout:0];
}
}
#pragma mark 用户加入
- (void)userJoin:(MCPeerID *)peerID
{
DDYInfoLog(@"已经连接");
[_onlineUsersArray addObject:_usersInfoCache[peerID.displayName]];
if (self.usersArrayChangeBlock) {
self.usersArrayChangeBlock(_onlineUsersArray);
}
}
#pragma mark 正在进入
- (void)userConnecting:(MCPeerID *)peerID
{
DDYInfoLog(@"正在连接");
}
#pragma mark 用户离开
- (void)userLeave:(MCPeerID *)peerID
{
DDYInfoLog(@"失去连接");
[_onlineUsersArray removeObject:_usersInfoCache[peerID.displayName]];
if (self.usersArrayChangeBlock) {
self.usersArrayChangeBlock(_onlineUsersArray);
}
}
#pragma mark - 发送
#pragma mark 发送聊天消息给所有用户
- (BOOL)sendMessageToAll:(NSData *)message
{
return [_session sendData:message toPeers:_session.connectedPeers withMode:MCSessionSendDataReliable error:nil];
}
#pragma mark 发送聊天消息给指定用户
- (BOOL)sendMessageToUser:(FFUser *)user message:(NSData *)message
{
MCPeerID *realPeerID = nil;
for (MCPeerID *peerID in _session.connectedPeers) {
if ([peerID.displayName isEqualToString:user.localID]) {
realPeerID = peerID;
}
}
return realPeerID ? [_session sendData:message toPeers:@[realPeerID] withMode:MCSessionSendDataReliable error:nil] : NO;
}
#pragma mark 发送资源给指定用户
- (void)sendSourceToPeer:(MCPeerID *)peerID url:(NSURL *)url fileID:(NSString *)fileID result:(void (^)(BOOL success))result
{
NSString *imgName = DDYStrFormat(@"%@<*>%@", fileID, [url lastPathComponent]);
[_session sendResourceAtURL:url withName:imgName toPeer:peerID withCompletionHandler:^(NSError *error) {
if (result) result(!error);
}];
}
#pragma mark 发送聊天图片给所有用户
- (void)sendImgToAll:(NSURL *)url result:(void (^)(BOOL success))result
{
if (_session.connectedPeers && _session.connectedPeers.count) {
for (MCPeerID *peerID in _session.connectedPeers) {
[self sendSourceToPeer:peerID url:url fileID:FFSendImage result:nil];
}
if (result) result(YES);
} else {
if (result) result(NO);
}
}
#pragma mark 发送聊天图片给指定用户
- (void)sendImgToUser:(FFUser *)user url:(NSURL *)url result:(void (^)(BOOL success))result
{
MCPeerID *realPeerID = nil;
for (MCPeerID *peerID in _session.connectedPeers) {
if ([peerID.displayName isEqualToString:user.localID]) {
realPeerID = peerID;
}
}
if (realPeerID) {
[self sendSourceToPeer:realPeerID url:url fileID:FFSendImage result:^(BOOL success) {
if (result) result(success);
}];
} else {
if (result) result(NO);
}
}
#pragma mark 发送头像给所有用户
- (void)sendAvatarToAll
{
for (MCPeerID *peerID in _session.connectedPeers) {
[self sendSourceToPeer:peerID url:DDYURLStr(_localUser.avatarPath) fileID:FFSendAvatar result:nil];
}
}
#pragma mark 发送语音给所有用户
- (void)sendVoiceToAll:(NSURL *)url result:(void (^)(BOOL success))result
{
if (_session.connectedPeers && _session.connectedPeers.count) {
for (MCPeerID *peerID in _session.connectedPeers) {
[self sendSourceToPeer:peerID url:url fileID:FFSendVoice result:nil];
}
if (result) result(YES);
} else {
if (result) result(NO);
}
}
#pragma mark 发送语音给指定用户
- (void)sendVoiceToUser:(FFUser *)user url:(NSURL *)url result:(void (^)(BOOL success))result
{
MCPeerID *realPeerID = nil;
for (MCPeerID *peerID in _session.connectedPeers) {
if ([peerID.displayName isEqualToString:user.localID]) realPeerID = peerID;
}
if (realPeerID) {
[self sendSourceToPeer:realPeerID url:url fileID:FFSendVoice result:^(BOOL success) {
if (result) result(success);
}];
} else {
if (result) result(NO);
}
}
#pragma mark 发送语音给所有用户
- (void)sendVideoToAll:(NSURL *)url result:(void (^)(BOOL success))result
{
if (_session.connectedPeers && _session.connectedPeers.count) {
for (MCPeerID *peerID in _session.connectedPeers) {
[self sendSourceToPeer:peerID url:url fileID:FFSendVideo result:nil];
}
if (result) result(YES);
} else {
if (result) result(NO);
}
}
#pragma mark 发送视频给指定用户
- (void)sendVideoToUser:(FFUser *)user url:(NSURL *)url result:(void (^)(BOOL success))result
{
MCPeerID *realPeerID = nil;
for (MCPeerID *peerID in _session.connectedPeers) {
if ([peerID.displayName isEqualToString:user.localID]) realPeerID = peerID;
}
if (realPeerID) {
[self sendSourceToPeer:realPeerID url:url fileID:FFSendVideo result:^(BOOL success) {
if (result) result(success);
}];
} else {
if (result) result(NO);
}
}
#pragma mark - MCNearbyServiceBrowserDelegate
#pragma mark Found a nearby advertising peer
- (void)browser:(MCNearbyServiceBrowser *)browser foundPeer:(MCPeerID *)peerID withDiscoveryInfo:(nullable NSDictionary<NSString *, NSString *> *)info
{
if (info) {
FFUser *user = [FFUser userWithDict:info];
[_usersInfoCache setObject:user forKey:peerID.displayName];
if ([info[@"timeStamp"] doubleValue] > [_localUser.userInfo[@"timeStamp"] doubleValue]) {
[self performSelectorOnMainThread:@selector(inviteUser:) withObject:peerID waitUntilDone:NO];
}
}
}
#pragma mark A nearby peer has stopped advertising
- (void)browser:(MCNearbyServiceBrowser *)browser lostPeer:(MCPeerID *)peerID
{
}
#pragma mark Browsing did not start due to an error
- (void)browser:(MCNearbyServiceBrowser *)browser didNotStartBrowsingForPeers:(NSError *)error
{
}
#pragma mark - MCNearbyServiceAdvertiserDelegate
#pragma mark Receive Invitation
- (void)advertiser:(MCNearbyServiceAdvertiser *)advertiser didReceiveInvitationFromPeer:(MCPeerID *)peerID withContext:(nullable NSData *)context invitationHandler:(void (^)(BOOL accept, MCSession *session))invitationHandler
{
invitationHandler(YES, _session);
}
#pragma mark Advertising did not start due to an error.
- (void)advertiser:(MCNearbyServiceAdvertiser *)advertiser didNotStartAdvertisingPeer:(NSError *)error
{
}
#pragma mark - MCSessionDelegate
#pragma mark Remote peer changed state.
- (void)session:(MCSession *)session peer:(MCPeerID *)peerID didChangeState:(MCSessionState)state
{
switch (state)
{
case MCSessionStateNotConnected:
[self performSelectorOnMainThread:@selector(userLeave:) withObject:peerID waitUntilDone:NO];
break;
case MCSessionStateConnecting:
[self performSelectorOnMainThread:@selector(userConnecting:) withObject:peerID waitUntilDone:NO];
break;
case MCSessionStateConnected:
[self performSelectorOnMainThread:@selector(userJoin:) withObject:peerID waitUntilDone:NO];
break;
}
}
#pragma mark Received data from remote peer.
- (void)session:(MCSession *)session didReceiveData:(NSData *)data fromPeer:(MCPeerID *)peerID
{
}
#pragma markReceived a byte stream from remote peer.
- (void)session:(MCSession *)session didReceiveStream:(NSInputStream *)stream withName:(NSString *)streamName fromPeer:(MCPeerID *)peerID
{
}
#pragma mark Start receiving a resource from remote peer.
- (void)session:(MCSession *)session didStartReceivingResourceWithName:(NSString *)resourceName fromPeer:(MCPeerID *)peerID withProgress:(NSProgress *)progress
{
}
#pragma mark receiving a resource from remote peer and saved the content
- (void)session:(MCSession *)session didFinishReceivingResourceWithName:(NSString *)resourceName fromPeer:(MCPeerID *)peerID atURL:(NSURL *)localURL withError:(nullable NSError *)error
{
}
#pragma mark Made first contact with peer and have identity information about the remote peer (certificate may be nil).
- (void)session:(MCSession *)session didReceiveCertificate:(nullable NSArray *)certificate fromPeer:(MCPeerID *)peerID certificateHandler:(void (^)(BOOL accept))certificateHandler
{
if (certificateHandler) {
certificateHandler(YES);
}
}
#pragma mark 监听挂起和重新进入程序
#pragma mark 添加监听
- (void)addObserverActive
{
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationWillResignActive:)
name:UIApplicationWillResignActiveNotification object:nil]; //监听home键挂起.
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationDidBecomeActive:)
name:UIApplicationDidBecomeActiveNotification object:nil]; //监听重新进入程序.
}
#pragma mark 进入前台
- (void)applicationDidBecomeActive:(UIApplication *)application
{
DDYInfoLog( @"[LC_UIApplication] Application did become active." );
_canInvite = YES;
}
#pragma mark 挂起程序
- (void)applicationWillResignActive:(UIApplication *)application
{
DDYInfoLog( @"[LC_UIApplication] Application will resign active." );
_canInvite = NO;
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
[self stopAdvertise];
}
@end
socket
