iOS 的 XMPPFramework 簡介

XMPPFramework是一個OS X/iOS平臺的開源項目,使用Objective-C實現了XMPP協議(RFC-3920),同時還提供了用於讀寫XML的工具,大大簡化了基於XMPP的通訊應用的開發。git

1. 登陸和好友上下線github

1.1XMPP中經常使用對象們數據庫

  • XMPPStream:xmpp基礎服務類服務器

  • XMPPRoster:好友列表類框架

  • XMPPRosterCoreDataStorage:好友列表(用戶帳號)在core data中的操做類dom

  • XMPPvCardCoreDataStorage:好友名片(暱稱,簽名,性別,年齡等信息)在core data中的操做類socket

  • XMPPvCardTemp:好友名片實體類,從數據庫裏取出來的都是它工具

  • xmppvCardAvatarModule:好友頭像測試

  • XMPPReconnect:若是失去鏈接,自動重連fetch

  • XMPPRoom:提供多用戶聊天支持

  • XMPPPubSub:發佈訂閱

1.2登陸操做,也就是鏈接xmpp服務器

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- (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成功以後會依次調用XMPPStreamDelegate的方法,首先調用

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

而後

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- (void)xmppStreamDidConnect:(XMPPStream *)sender

在該方法下面須要使用xmppStream 的authenticateWithPassword方法進行密碼驗證,成功的話會響應delegate的方法,就是下面這個

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- (void)xmppStreamDidAuthenticate:(XMPPStream *)sender

1.3上線

實現 - (void)xmppStreamDidAuthenticate:(XMPPStream *)sender 委託方法

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

1.4退出並斷開鏈接

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

1.5好友狀態

獲取好友狀態,經過實現 

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

方法,當接收到 presence 標籤的內容時,XMPPFramework 框架回調該方法 

一個 presence 標籤的格式通常以下:

360桌面截圖20141219111016.jpg

presence 的狀態:

  • available 上線

  • away 離開

  • do not disturb 忙碌

  • unavailable 下線

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- (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. 接收消息和發送消息

2.1接收消息

經過實現 

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

方法

當接收到 message 標籤的內容時,XMPPFramework 框架回調該方法

根據 XMPP 協議,消息體的內容存儲在標籤 body 內

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

2.2發送消息

發送消息,咱們須要根據 XMPP 協議,將數據放到標籤內,例如:

360桌面截圖20141219111049.jpg

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- (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. 獲取好友信息和刪除好友

3.1好友列表和好友名片

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[_xmppRoster fetchRoster]; //獲取好友列表
//獲取到一個好友節點
- (void)xmppRoster:(XMPPRoster *)sender didRecieveRosterItem:(NSXMLElement *)item
//獲取無缺友列表
- (void)xmppRosterDidEndPopulating:(XMPPRoster *)sender
//到服務器上請求聯繫人名片信息
- (void)fetchvCardTempForJID:(XMPPJID *)jid;
//請求聯繫人的名片,若是數據庫有就不請求,沒有就發送名片請求
- (void)fetchvCardTempForJID:(XMPPJID *)jid ignoreStorage:(BOOL)ignoreStorage;
//獲取聯繫人的名片,若是數據庫有就返回,沒有返回空,併到服務器上抓取
- (XMPPvCardTemp *)vCardTempForJID:(XMPPJID *)jid shouldFetch:(BOOL)shouldFetch;
//更新本身的名片信息
- (void)updateMyvCardTemp:(XMPPvCardTemp *)vCardTemp;
//獲取到一盒聯繫人的名片信息的回調
- (void)xmppvCardTempModule:(XMPPvCardTempModule *)vCardTempModule 
         didReceivevCardTemp:(XMPPvCardTemp *)vCardTemp 
                      forJID:(XMPPJID *)jid

3.2添加好友

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     //name爲用戶帳號
     - (void)XMPPAddFriendSubscribe:(NSString *)name
     {
         //XMPPHOST 就是服務器名,  主機名
         XMPPJID *jid = [XMPPJID jidWithString:[NSString stringWithFormat:@ "%@@%@" ,name,XMPPHOST]];
         //[presence addAttributeWithName:@"subscription" stringValue:@"好友"];
         [xmppRoster subscribePresenceToUser:jid];
          
     }

3.3收到添加好友的請求

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

3.4刪除好友

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//刪除好友,name爲好友帳號
- (void)removeBuddy:(NSString *)name  
{  
     XMPPJID *jid = [XMPPJID jidWithString:[NSString stringWithFormat:@ "%@@%@" ,name,XMPPHOST]];  
        
     [self xmppRoster] removeUser:jid];  
}

4. 聊天室

初始化聊天室

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

建立聊天室成功

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

加入聊天室,使用暱稱

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

獲取聊天室信息

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

若是房間存在,會調用委託

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

房間不存在,調用委託

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

離開房間

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[xmppRoom deactivate:xmppStream];

XMPPRoomDelegate的其餘代理方法:

離開聊天室

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

新人加入羣聊

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

有人退出羣聊

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

有人在羣裏發言

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

5. 消息回執

這個是XEP-0184協議的內容

協議內容:

發送消息時附加回執請求

360桌面截圖20141219110801.jpg

代碼實現

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

收到回執請求的消息,發送回執

360桌面截圖20141219110826.jpg

代碼實現

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     - (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
     {
         //回執判斷
         NSXMLElement *request = [message elementForName:@ "request" ];
         if  (request)
         {
             if  ([request.xmlns isEqualToString:@ "urn:xmpp:receipts" ]) //消息回執
             {
                 //組裝消息回執
                 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];
                  
                 //發送回執
                 [self.xmppStream sendElement:msg];
             }
         } else
         {
             NSXMLElement *received = [message elementForName:@ "received" ];
             if  (received)
             {
                 if  ([received.xmlns isEqualToString:@ "urn:xmpp:receipts" ]) //消息回執
                 {
                     //發送成功
                     NSLog(@ "message send success!" );
                 }  
             }  
         }  
          
         //消息處理  
         //...  
     }

6. 添加AutoPing

爲了監聽服務器是否有效,增長心跳監聽。用XEP-0199協議,在XMPPFrameWork框架下,封裝了 XMPPAutoPing 和 XMPPPing兩個類均可以使用,由於XMPPAutoPing已經組合進了XMPPPing類,因此XMPPAutoPing使用起來更方便。

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//初始化並啓動ping
-(void)autoPingProxyServer:(NSString*)strProxyServer
{
     _xmppAutoPing = [[XMPPAutoPingalloc] init];
     [_xmppAutoPingactivate:_xmppStream];
     [_xmppAutoPingaddDelegate:selfdelegateQueue:  dispatch_get_main_queue()];
     _xmppAutoPing.respondsToQueries = YES;
     _xmppAutoPing.pingInterval=2; //ping 間隔時間
     if  (nil != strProxyServer)
     {
        _xmppAutoPing.targetJID = [XMPPJID jidWithString: strProxyServer ]; //設置ping目標服務器,若是爲nil,則監聽socketstream當前鏈接上的那個服務器
     }
}
//卸載監聽
  [_xmppAutoPing   deactivate];
   [_xmppAutoPing   removeDelegate:self];
    _xmppAutoPing = nil;
//ping XMPPAutoPingDelegate的委託方法:
- (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" );
}

原文地址。做者:易穎。本文爲做者受權轉載,須要轉載請聯繫做者。)

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