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iOS 的 XMPPFramework 简介

即时通讯软件开发 云聊IM 1301℃

XMPPFramework是一个OS X/iOS平台的开源项目,使用Objective-C实现了XMPP协议(RFC-3920),同时还提供了用于读写XML的工具,大大简化了基于XMPP的通信应用的开发。

1. 登录和好友上下线

1.1XMPP中常用对象们

XMPPStream:xmpp基础服务类

XMPPRoster:好友列表类

XMPPRosterCoreDataStorage:好友列表(用户账号)在core data中的操作类

XMPPvCardCoreDataStorage:好友名片(昵称,签名,性别,年龄等信息)在core data中的操作类

XMPPvCardTemp:好友名片实体类,从数据库里取出来的都是它

xmppvCardAvatarModule:好友头像

XMPPReconnect:如果失去连接,自动重连

XMPPRoom:提供多用户聊天支持

XMPPPubSub:发布订阅

1.2登录操作,也就是连接xmpp服务器

- (void)connect {
    if (self.xmppStream == nil) {
        self.xmppStream = [[XMPPStream alloc] init];
        [self.xmppStream addDelegate:self delegateQueue:dispatch_get_main_queue()];
    }
    if (![self.xmppStream isConnected]) {
        NSString *username = [[NSUserDefaults standardUserDefaults] objectForKey:@"username"];
        XMPPJID *jid = [XMPPJID jidWithUser:username domain:@"lizhen" resource:@"Ework"];
        [self.xmppStream setMyJID:jid];
        [self.xmppStream setHostName:@"10.4.125.113"];
        NSError *error = nil;
        if (![self.xmppStream connect:&error]) {
            NSLog(@"Connect Error: %@", [[error userInfo] description]);
        }
    }
}

connect成功之后会依次调用XMPPStreamDelegate的方法,首先调用

- (void)xmppStream:(XMPPStream *)sender socketDidConnect:(GCDAsyncSocket *)socket
 
...

然后

- (void)xmppStreamDidConnect:(XMPPStream *)sender

在该方法下面需要使用xmppStream 的authenticateWithPassword方法进行密码验证,成功的话会响应delegate的方法,就是下面这个

- (void)xmppStreamDidAuthenticate:(XMPPStream *)sender

1.3上线

实现 – (void)xmppStreamDidAuthenticate:(XMPPStream *)sender 委托方法

- (void)xmppStreamDidAuthenticate:(XMPPStream *)sender {
    XMPPPresence *presence = [XMPPPresence presenceWithType:@"available"];
    [self.xmppStream sendElement:presence];
}

1.4退出并断开连接

- (void)disconnect {
    XMPPPresence *presence = [XMPPPresence presenceWithType:@"unavailable"];
    [self.xmppStream sendElement:presence];
      
    [self.xmppStream disconnect];
}

1.5好友状态

获取好友状态,通过实现

- (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence
 
...

方法,当接收到 presence 标签的内容时,XMPPFramework 框架回调该方法

一个 presence 标签的格式一般如下:

presence 的状态:available 上线、away 离开、do not disturb 忙碌、unavailable 下线

- (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence {
    NSString *presenceType = [presence type];
    NSString *presenceFromUser = [[presence from] user];
    if (![presenceFromUser isEqualToString:[[sender myJID] user]]) {
        if ([presenceType isEqualToString:@"available"]) {
            //
        } else if ([presenceType isEqualToString:@"unavailable"]) {
            //
        }
    }
}

2. 接收消息和发送消息

2.1接收消息

通过实现

- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message;

方法

当接收到 message 标签的内容时,XMPPFramework 框架回调该方法

根据 XMPP 协议,消息体的内容存储在标签 body 内

- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message {
    NSString *messageBody = [[message elementForName:@"body"] stringValue];
}

2.2发送消息

发送消息,我们需要根据 XMPP 协议,将数据放到标签内,例如:

- (void)sendMessage:(NSString *) message toUser:(NSString *) user {
    NSXMLElement *body = [NSXMLElement elementWithName:@"body"];
    [body setStringValue:message];
    NSXMLElement *message = [NSXMLElement elementWithName:@"message"];
    [message addAttributeWithName:@"type" stringValue:@"chat"];
    NSString *to = [NSString stringWithFormat:@"%@@example.com", user];
    [message addAttributeWithName:@"to" stringValue:to];
    [message addChild:body];
    [self.xmppStream sendElement:message];
}

3. 获取好友信息和删除好友

3.1好友列表和好友名片

[_xmppRoster fetchRoster];//获取好友列表
//获取到一个好友节点
- (void)xmppRoster:(XMPPRoster *)sender didRecieveRosterItem:(NSXMLElement *)item
//获取完好友列表
- (void)xmppRosterDidEndPopulating:(XMPPRoster *)sender
//到服务器上请求联系人名片信息
- (void)fetchvCardTempForJID:(XMPPJID *)jid;
//请求联系人的名片,如果数据库有就不请求,没有就发送名片请求
- (void)fetchvCardTempForJID:(XMPPJID *)jid ignoreStorage:(BOOL)ignoreStorage;
//获取联系人的名片,如果数据库有就返回,没有返回空,并到服务器上抓取
- (XMPPvCardTemp *)vCardTempForJID:(XMPPJID *)jid shouldFetch:(BOOL)shouldFetch;
//更新自己的名片信息
- (void)updateMyvCardTemp:(XMPPvCardTemp *)vCardTemp;
//获取到一盒联系人的名片信息的回调
- (void)xmppvCardTempModule:(XMPPvCardTempModule *)vCardTempModule 
        didReceivevCardTemp:(XMPPvCardTemp *)vCardTemp 
                     forJID:(XMPPJID *)jid

3.2添加好友

//name为用户账号
- (void)XMPPAddFriendSubscribe:(NSString *)name
{
    //XMPPHOST 就是服务器名,  主机名
    XMPPJID *jid = [XMPPJID jidWithString:[NSString stringWithFormat:@"%@@%@",name,XMPPHOST]];
    //[presence addAttributeWithName:@"subscription" stringValue:@"好友"];
    [xmppRoster subscribePresenceToUser:jid];
      
}

3.3收到添加好友的请求

- (void)xmppRoster:(XMPPRoster *)sender didReceivePresenceSubscriptionRequest:(XMPPPresence *)presence
{
    //取得好友状态
    NSString *presenceType = [NSString stringWithFormat:@"%@", [presence type]]; //online/offline
    //请求的用户
    NSString *presenceFromUser =[NSString stringWithFormat:@"%@", [[presence from] user]];
    NSLog(@"presenceType:%@",presenceType);
      
    NSLog(@"presence2:%@  sender2:%@",presence,sender);
      
    XMPPJID *jid = [XMPPJID jidWithString:presenceFromUser];
    //接收添加好友请求
    [xmppRoster acceptPresenceSubscriptionRequestFrom:jid andAddToRoster:YES];
      
}

3.4删除好友

//删除好友,name为好友账号
- (void)removeBuddy:(NSString *)name  
{  
    XMPPJID *jid = [XMPPJID jidWithString:[NSString stringWithFormat:@"%@@%@",name,XMPPHOST]];  
        
    [self xmppRoster] removeUser:jid];  
}

4. 聊天室

4.1初始化聊天室

XMPPJID *roomJID = [XMPPJID jidWithString:ROOM_JID];
  
xmppRoom = [[XMPPRoom alloc] initWithRoomStorage:self jid:roomJID];
  
[xmppRoom activate:xmppStream];
[xmppRoom addDelegate:self delegateQueue:dispatch_get_main_queue()];

4.2创建聊天室成功

- (void)xmppRoomDidCreate:(XMPPRoom *)sender
{
    DDLogInfo(@"%@: %@", THIS_FILE, THIS_METHOD);
}

4.3加入聊天室,使用昵称

[xmppRoom joinRoomUsingNickname:@"quack" history:nil];

4.4获取聊天室信息

- (void)xmppRoomDidJoin:(XMPPRoom *)sender
    {
        [xmppRoom fetchConfigurationForm];
        [xmppRoom fetchBanList];
        [xmppRoom fetchMembersList];
        [xmppRoom fetchModeratorsList];
    }

4.5如果房间存在,会调用委托

// 收到禁止名单列表
- (void)xmppRoom:(XMPPRoom *)sender didFetchBanList:(NSArray *)items;
// 收到好友名单列表
- (void)xmppRoom:(XMPPRoom *)sender didFetchMembersList:(NSArray *)items;
// 收到主持人名单列表
- (void)xmppRoom:(XMPPRoom *)sender didFetchModeratorsList:(NSArray *)items;

4.6房间不存在,调用委托

- (void)xmppRoom:(XMPPRoom *)sender didNotFetchBanList:(XMPPIQ *)iqError;
- (void)xmppRoom:(XMPPRoom *)sender didNotFetchMembersList:(XMPPIQ *)iqError;
- (void)xmppRoom:(XMPPRoom *)sender didNotFetchModeratorsList:(XMPPIQ *)iqError;

4.7离开房间

[xmppRoom deactivate:xmppStream];

XMPPRoomDelegate的其他代理方法:

4.8离开聊天室

- (void)xmppRoomDidLeave:(XMPPRoom *)sender
{
    DDLogVerbose(@"%@: %@", THIS_FILE, THIS_METHOD);
}

4.9新人加入群聊

- (void)xmppRoom:(XMPPRoom *)sender occupantDidJoin:(XMPPJID *)occupantJID
{
    DDLogVerbose(@"%@: %@", THIS_FILE, THIS_METHOD);
}

4.10有人退出群聊

- (void)xmppRoom:(XMPPRoom *)sender occupantDidLeave:(XMPPJID *)occupantJID
{
    DDLogVerbose(@"%@: %@", THIS_FILE, THIS_METHOD);
}

4.11有人在群里发言

- (void)xmppRoom:(XMPPRoom *)sender didReceiveMessage:(XMPPMessage *)message fromOccupant:(XMPPJID *)occupantJID
{
    DDLogVerbose(@"%@: %@", THIS_FILE, THIS_METHOD);
}

5. 消息回执

这个是XEP-0184协议的内容

协议内容:

发送消息时附加回执请求

5.1代码实现

NSString *siID = [XMPPStream generateUUID];
//发送消息
XMPPMessage *message = [XMPPMessage messageWithType:@"chat" to:jid elementID:siID];
NSXMLElement *receipt = [NSXMLElement elementWithName:@"request" xmlns:@"urn:xmpp:receipts"];
[message addChild:receipt];
[message addBody:@"测试"];
[self.xmppStream sendElement:message];

5.2收到回执请求的消息,发送回执

5.3代码实现

- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
{
    //回执判断
    NSXMLElement *request = [message elementForName:@"request"];
    if (request)
    {
        if ([request.xmlns isEqualToString:@"urn:xmpp:receipts"])//消息回执
        {
            //组装消息回执
            XMPPMessage *msg = [XMPPMessage messageWithType:[message attributeStringValueForName:@"type"] to:message.from elementID:[message attributeStringValueForName:@"id"]];
            NSXMLElement *recieved = [NSXMLElement elementWithName:@"received" xmlns:@"urn:xmpp:receipts"];
            [msg addChild:recieved];
              
            //发送回执
            [self.xmppStream sendElement:msg];
        }
    }else
    {
        NSXMLElement *received = [message elementForName:@"received"];
        if (received)
        {
            if ([received.xmlns isEqualToString:@"urn:xmpp:receipts"])//消息回执
            {
                //发送成功
                NSLog(@"message send success!");
            }  
        }  
    }  
      
    //消息处理  
    //...  
}

6. 添加AutoPing

为了监听服务器是否有效,增加心跳监听。用XEP-0199协议,在XMPPFrameWork框架下,封装了 XMPPAutoPing 和 XMPPPing两个类都可以使用,因为XMPPAutoPing已经组合进了XMPPPing类,所以XMPPAutoPing使用起来更方便。

//初始化并启动ping
-(void)autoPingProxyServer:(NSString*)strProxyServer
{
    _xmppAutoPing = [[XMPPAutoPingalloc] init];
    [_xmppAutoPingactivate:_xmppStream];
    [_xmppAutoPingaddDelegate:selfdelegateQueue:  dispatch_get_main_queue()];
    _xmppAutoPing.respondsToQueries = YES;
    _xmppAutoPing.pingInterval=2;//ping 间隔时间
    if (nil != strProxyServer)
    {
       _xmppAutoPing.targetJID = [XMPPJID jidWithString: strProxyServer ];//设置ping目标服务器,如果为nil,则监听socketstream当前连接上的那个服务器
    }
}
//卸载监听
 [_xmppAutoPing   deactivate];
  [_xmppAutoPing   removeDelegate:self];
   _xmppAutoPing = nil;
//ping XMPPAutoPingDelegate的委托方法:
- (void)xmppAutoPingDidSendPing:(XMPPAutoPing *)sender
{
    NSLog(@"- (void)xmppAutoPingDidSendPing:(XMPPAutoPing *)sender");
}
- (void)xmppAutoPingDidReceivePong:(XMPPAutoPing *)sender
{
    NSLog(@"- (void)xmppAutoPingDidReceivePong:(XMPPAutoPing *)sender");
}
   
- (void)xmppAutoPingDidTimeout:(XMPPAutoPing *)sender
{
    NSLog(@"- (void)xmppAutoPingDidTimeout:(XMPPAutoPing *)sender");
}
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