本文链接:http://www.cocoachina.com/ios/20141219/10703.html
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
- (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
...
presence 的状态:
available 上线
away 离开
do not disturb 忙碌
unavailable 下线
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,
- (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