IOS XMPP（即时通讯的框架）

#import "AppDelegate.h"
#import "XMPPFramework.h"
/*
 * 在AppDelegate实现登录

 1. 初始化XMPPStream
 2. 连接到服务器[传一个JID]
 3. 连接到服务成功后，再发送密码授权
 4. 授权成功后，发送"在线" 消息
 */
@interface AppDelegate ()<XMPPStreamDelegate>{
    XMPPStream *_xmppStream;
}

// 1. 初始化XMPPStream
-(void)setupXMPPStream;

// 2.连接到服务器
-(void)connectToHost;

// 3.连接到服务成功后，再发送密码授权
-(void)sendPwdToHost;

// 4.授权成功后，发送"在线" 消息
-(void)sendOnlineToHost;
@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    // 程序一启动就连接到主机
    [self connectToHost];
    return YES;
}

#pragma mark  -私有方法
#pragma mark 初始化XMPPStream
-(void)setupXMPPStream{

    _xmppStream = [[XMPPStream alloc] init];

    // 设置代理
    [_xmppStream addDelegate:self delegateQueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, )];
}

#pragma mark 连接到服务器
-(void)connectToHost{
    NSLog(@"开始连接到服务器");
    if (!_xmppStream) {
        [self setupXMPPStream];
    }

    // 设置登录用户JID
    //resource 标识用户登录的客户端 iphone android

    XMPPJID *myJID = [XMPPJID jidWithUser:@"wangwu" domain:@"teacher.local" resource:@"iphone" ];
    _xmppStream.myJID = myJID;

    // 设置服务器域名
    _xmppStream.hostName = @"teacher.local";//不仅可以是域名，还可是IP地址

    // 设置端口 如果服务器端口是5222，可以省略
    _xmppStream.hostPort = ;

    // 连接
    NSError *err = nil;
    if(![_xmppStream connectWithTimeout:XMPPStreamTimeoutNone error:&err]){
        NSLog(@"%@",err);
    }

}

#pragma mark 连接到服务成功后，再发送密码授权
-(void)sendPwdToHost{
    NSLog(@"再发送密码授权");
    NSError *err = nil;
    [_xmppStream authenticateWithPassword:@"" error:&err];
    if (err) {
        NSLog(@"%@",err);
    }
}

#pragma mark  授权成功后，发送"在线" 消息
-(void)sendOnlineToHost{

    NSLog(@"发送 在线 消息");
    XMPPPresence *presence = [XMPPPresence presence];
    NSLog(@"%@",presence);

    [_xmppStream sendElement:presence];

}
#pragma mark -XMPPStream的代理
#pragma mark 与主机连接成功
-(void)xmppStreamDidConnect:(XMPPStream *)sender{
    NSLog(@"与主机连接成功");

    // 主机连接成功后，发送密码进行授权
    [self sendPwdToHost];
}
#pragma mark  与主机断开连接
-(void)xmppStreamDidDisconnect:(XMPPStream *)sender withError:(NSError *)error{
    // 如果有错误，代表连接失败
    NSLog(@"与主机断开连接 %@",error);

}

#pragma mark 授权成功
-(void)xmppStreamDidAuthenticate:(XMPPStream *)sender{
    NSLog(@"授权成功");

    [self sendOnlineToHost];
}

#pragma mark 授权失败
-(void)xmppStream:(XMPPStream *)sender didNotAuthenticate:(DDXMLElement *)error{
     NSLog(@"授权失败 %@",error);
}

#pragma mark -公共方法
-(void)logout{
    // 1." 发送 "离线" 消息"
    XMPPPresence *offline = [XMPPPresence presenceWithType:@"unavailable"];
    [_xmppStream sendElement:offline];

    // 2. 与服务器断开连接
    [_xmppStream disconnect];
}

@end

封装好的XMPP工具（登录，注册，注销）

WCXMPPTool.h

#import <Foundation/Foundation.h>
#import "Singleton.h"
#import "XMPPFramework.h"

typedef enum {
    XMPPResultTypeLoginSuccess,//登录成功
    XMPPResultTypeLoginFailure,//登录失败
    XMPPResultTypeNetErr,//网络不给力
    XMPPResultTypeRegisterSuccess,//注册成功
    XMPPResultTypeRegisterFailure//注册失败
}XMPPResultType;

typedef void (^XMPPResultBlock)(XMPPResultType type);// XMPP请求结果的block

@interface WCXMPPTool : NSObject

singleton_interface(WCXMPPTool);

@property (nonatomic, strong)XMPPvCardTempModule *vCard;//电子名片

/**
 *  注册标识 YES 注册 / NO 登录
 */
@property (nonatomic, assign,getter=isRegisterOperation) BOOL  registerOperation;//注册操作

/**
 *  用户注销

 */
-(void)xmppUserlogout;
/**
 *  用户登录
 */
-(void)xmppUserLogin:(XMPPResultBlock)resultBlock;

/**
 *  用户注册
 */
-(void)xmppUserRegister:(XMPPResultBlock)resultBlock;
@end

WCXMPPTool.m

#import "WCXMPPTool.h"

/*
 * 在AppDelegate实现登录

 1. 初始化XMPPStream
 2. 连接到服务器[传一个JID]
 3. 连接到服务成功后，再发送密码授权
 4. 授权成功后，发送"在线" 消息
 */
@interface WCXMPPTool ()<XMPPStreamDelegate>{
    XMPPStream *_xmppStream;
    XMPPResultBlock _resultBlock;

    XMPPvCardCoreDataStorage *_vCardStorage;//电子名片的数据存储

    XMPPvCardAvatarModule *_avatar;//头像模块
}

// 1. 初始化XMPPStream
-(void)setupXMPPStream;

// 2.连接到服务器
-(void)connectToHost;

// 3.连接到服务成功后，再发送密码授权
-(void)sendPwdToHost;

// 4.授权成功后，发送"在线" 消息
-(void)sendOnlineToHost;
@end

@implementation WCXMPPTool

singleton_implementation(WCXMPPTool)

#pragma mark  -私有方法
#pragma mark 初始化XMPPStream
-(void)setupXMPPStream{

    _xmppStream = [[XMPPStream alloc] init];

#warning 每一个模块添加后都要激活
    //添加电子名片模块
    _vCardStorage = [XMPPvCardCoreDataStorage sharedInstance];
    _vCard = [[XMPPvCardTempModule alloc] initWithvCardStorage:_vCardStorage];

    //激活
    [_vCard activate:_xmppStream];

    //添加头像模块
    _avatar = [[XMPPvCardAvatarModule alloc] initWithvCardTempModule:_vCard];
    [_avatar activate:_xmppStream];

    // 设置代理
    [_xmppStream addDelegate:self delegateQueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, )];
}

#pragma mark 连接到服务器
-(void)connectToHost{
    WCLog(@"开始连接到服务器");
    if (!_xmppStream) {
        [self setupXMPPStream];
    }

    // 设置登录用户JID
    //resource 标识用户登录的客户端 iphone android

    // 从单例获取用户名
    NSString *user = nil;
    if (self.isRegisterOperation) {
        user = [WCUserInfo sharedWCUserInfo].registerUser;
    }else{
        user = [WCUserInfo sharedWCUserInfo].user;
    }

    XMPPJID *myJID = [XMPPJID jidWithUser:user domain:@"teacher.local" resource:@"iphone" ];
    _xmppStream.myJID = myJID;

    // 设置服务器域名
    _xmppStream.hostName = @"127.0.0.1";//不仅可以是域名，还可是IP地址

    // 设置端口 如果服务器端口是5222，可以省略
    _xmppStream.hostPort = ;

    // 连接
    NSError *err = nil;
    if(![_xmppStream connectWithTimeout:XMPPStreamTimeoutNone error:&err]){
        WCLog(@"%@",err);
    }

}

#pragma mark 连接到服务成功后，再发送密码授权
-(void)sendPwdToHost{
    WCLog(@"再发送密码授权");
    NSError *err = nil;

    // 从单例里获取密码
    NSString *pwd = [WCUserInfo sharedWCUserInfo].pwd;

    [_xmppStream authenticateWithPassword:pwd error:&err];

    if (err) {
        WCLog(@"%@",err);
    }
}

#pragma mark  授权成功后，发送"在线" 消息
-(void)sendOnlineToHost{

    WCLog(@"发送 在线 消息");
    XMPPPresence *presence = [XMPPPresence presence];
    WCLog(@"%@",presence);

    [_xmppStream sendElement:presence];

}
#pragma mark -XMPPStream的代理
#pragma mark 与主机连接成功
-(void)xmppStreamDidConnect:(XMPPStream *)sender{
    WCLog(@"与主机连接成功");

    if (self.isRegisterOperation) {//注册操作，发送注册的密码
        NSString *pwd = [WCUserInfo sharedWCUserInfo].registerPwd;
        [_xmppStream registerWithPassword:pwd error:nil];
    }else{//登录操作
        // 主机连接成功后，发送密码进行授权
        [self sendPwdToHost];
    }

}
#pragma mark  与主机断开连接
-(void)xmppStreamDidDisconnect:(XMPPStream *)sender withError:(NSError *)error{
    // 如果有错误，代表连接失败

    // 如果没有错误，表示正常的断开连接(人为断开连接)

    if(error && _resultBlock){
        _resultBlock(XMPPResultTypeNetErr);
    }
    WCLog(@"与主机断开连接 %@",error);

}

#pragma mark 授权成功
-(void)xmppStreamDidAuthenticate:(XMPPStream *)sender{
    WCLog(@"授权成功");

    [self sendOnlineToHost];

    // 回调控制器登录成功
    if(_resultBlock){
        _resultBlock(XMPPResultTypeLoginSuccess);
    }

}

#pragma mark 授权失败
-(void)xmppStream:(XMPPStream *)sender didNotAuthenticate:(DDXMLElement *)error{
    WCLog(@"授权失败 %@",error);

    // 判断block有无值，再回调给登录控制器
    if (_resultBlock) {
        _resultBlock(XMPPResultTypeLoginFailure);
    }
}

#pragma mark 注册成功
-(void)xmppStreamDidRegister:(XMPPStream *)sender{
    WCLog(@"注册成功");
    if(_resultBlock){
        _resultBlock(XMPPResultTypeRegisterSuccess);
    }

}

#pragma mark 注册失败
-(void)xmppStream:(XMPPStream *)sender didNotRegister:(DDXMLElement *)error{

    WCLog(@"注册失败 %@",error);
    if(_resultBlock){
        _resultBlock(XMPPResultTypeRegisterFailure);
    }

}

#pragma mark -公共方法
-(void)xmppUserlogout{
    // 1." 发送 "离线" 消息"
    XMPPPresence *offline = [XMPPPresence presenceWithType:@"unavailable"];
    [_xmppStream sendElement:offline];

    // 2. 与服务器断开连接
    [_xmppStream disconnect];

    // 3. 回到登录界面
    //    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Login" bundle:nil];
    //
    //    self.window.rootViewController = storyboard.instantiateInitialViewController;
    [UIStoryboard showInitialVCWithName:@"Login"];

    //4.更新用户的登录状态
    [WCUserInfo sharedWCUserInfo].loginStatus = NO;
    [[WCUserInfo sharedWCUserInfo] saveUserInfoToSanbox];

}

-(void)xmppUserLogin:(XMPPResultBlock)resultBlock{

    // 先把block存起来
    _resultBlock = resultBlock;

    //    Domain=XMPPStreamErrorDomain Code=1 "Attempting to connect while already connected or connecting." UserInfo=0x7fd86bf06700 {NSLocalizedDescription=Attempting to connect while already connected or connecting.}
    // 如果以前连接过服务，要断开
    [_xmppStream disconnect];

    // 连接主机 成功后发送登录密码
    [self connectToHost];
}

-(void)xmppUserRegister:(XMPPResultBlock)resultBlock{
    // 先把block存起来
    _resultBlock = resultBlock;

    // 如果以前连接过服务，要断开
    [_xmppStream disconnect];

    // 连接主机 成功后发送注册密码
    [self connectToHost];
}

@end

自动登录

AppDelegate.m

#import "AppDelegate.h"
#import "XMPPFramework.h"
#import "WCNavigationController.h"
#import "DDLog.h"
#import "DDTTYLogger.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    //从沙盒的路径
    NSString *path=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject];

    //打开XMPP的日志
    [DDLog addLogger:[DDTTYLogger sharedInstance]];

    //设置导航栏背景
  //  [WCNavigationController setupNavTheme];

    //从沙盒里加载用户的数据单例
    [[WCUserInfo sharedWCUserInfo] loadUserInfoFromSanbox];

    //判断用户的登录状态，YES直接来到主界面
    if([WCUserInfo sharedWCUserInfo].loginStatus){
        UIStoryboard *storayobard=[UIStoryboard storyboardWithName:@"Main" bundle:nil];
        self.window.rootViewController=storayobard.instantiateInitialViewController;

        //自动登录服务
        [[WCXMPPTool sharedWCXMPPTool]xmppUserLogin:nil];
    }

    return YES;
}
@end

登录方法

#import "WCBaseLoginViewController.h"
#import "AppDelegate.h"

@implementation WCBaseLoginViewController

- (void)login{
    // 登录

    /*
     * 官方的登录实现

     * 1.把用户名和密码放在WCUserInfo的单例

     * 2.调用 AppDelegate的一个login 连接服务并登录
     */

    //隐藏键盘
    [self.view endEditing:YES];

    // 登录之前给个提示

    [MBProgressHUD showMessage:@"正在登录中..." toView:self.view];

    [WCXMPPTool sharedWCXMPPTool].registerOperation = NO;
    __weak typeof(self) selfVc = self;

    [[WCXMPPTool sharedWCXMPPTool] xmppUserLogin:^(XMPPResultType type) {
        [selfVc handleResultType:type];
    }];
}

-(void)handleResultType:(XMPPResultType)type{
    // 主线程刷新UI
    dispatch_async(dispatch_get_main_queue(), ^{
        [MBProgressHUD hideHUDForView:self.view
         ];
        switch (type) {
            case XMPPResultTypeLoginSuccess:
                NSLog(@"登录成功");
                [self enterMainPage];
                break;
            case XMPPResultTypeLoginFailure:
                NSLog(@"登录失败");
                [MBProgressHUD showError:@"用户名或者密码不正确" toView:self.view];
                break;
            case XMPPResultTypeNetErr:
                [MBProgressHUD showError:@"网络不给力" toView:self.view];
            default:
                break;
        }
    });

}

-(void)enterMainPage{

    // 更改用户的登录状态为YES
    [WCUserInfo sharedWCUserInfo].loginStatus = YES;

    // 把用户登录成功的数据，保存到沙盒
    [[WCUserInfo sharedWCUserInfo] saveUserInfoToSanbox];

    // 隐藏模态窗口
    [self dismissViewControllerAnimated:NO completion:nil];

    // 登录成功来到主界面
    // 此方法是在子线程补调用，所以在主线程刷新UI
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    self.view.window.rootViewController = storyboard.instantiateInitialViewController;
}