XMPP学习记录七：消息回执

发送消息时附加回执请求

1. from='northumberland@shakespeare.lit/westminster'
2. id='richard2-4.1.247'
3. to='kingrichard@royalty.england.lit/throne'>

6. 代码实现

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

      收到回执请求的消息，发送回执

      [cpp]
      1. from='kingrichard@royalty.england.lit/throne'
      2. id='bi29sg183b4v'
      3. to='northumberland@shakespeare.lit/westminster'>
      5. 
         

         代码实现

         [cpp]
         1. - (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
         2. {
         3. //回执判断
         4. NSXMLElement *request = [message elementForName:@request];
         5. if (request)
         6. {
         7. if ([request.xmlns isEqualToString:@urn:xmpp:receipts])//消息回执
         8. {
         9. //组装消息回执
         10. XMPPMessage *msg = [XMPPMessage messageWithType:[message attributeStringValueForName:@type] to:message.from elementID:[message attributeStringValueForName:@id]];
         11. NSXMLElement *recieved = [NSXMLElement elementWithName:@received xmlns:@urn:xmpp:receipts];
         12. [msg addChild:recieved];
         14. //发送回执
         15. [self.xmppStream sendElement:msg];
         16. }
         17. }else
         18. {
         19. NSXMLElement *received = [message elementForName:@received];
         20. if (received)
         21. {
         22. if ([received.xmlns isEqualToString:@urn:xmpp:receipts])//消息回执
         23. {
         24. //发送成功
         25. NSLog(@message send success!);
         26. }
         27. }
         28. }
         30. //消息处理
         31. //...
         32. }