xmpp开发教程（五）－收发消息

 1 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 2 #pragma mark ReceivePresence
 3 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 4 
 5 - (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence {
 6     NSString *presenceType = [presence type];
 7     NSString *presenceFromUser = [[presence from] user];
 8     NSLog(@"presenceFromUser:%@",presenceFromUser);
 9     NSLog(@"presenceType:%@",presenceType);
10     if (![presenceFromUser isEqualToString:[[sender myJID] user]]) {
11         if ([presenceType isEqualToString:@"available"]) {
12             //
13         } else if ([presenceType isEqualToString:@"unavailable"]) {
14             //
15         }
16     }
17 }

 1 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 2 #pragma mark ReceiveMessage
 3 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 4 
 5 - (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message {
 6     NSString *messageBody = [[message elementForName:@"body"] stringValue];
 7     NSLog(@"body:%@",messageBody);
 8     NSString *replyMessage=[NSString stringWithFormat:@"replay%@",messageBody];
 9     if(![messageBody isEqual:NULL])
10        [self sendMessage:replyMessage toUser:@"fengyun"];
11 }

 1 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 2 #pragma mark sendMessage
 3 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 4 
 5 - (void)sendMessage:(NSString *) message toUser:(NSString *) user {
 6     NSXMLElement *body = [NSXMLElement elementWithName:@"body"];
 7     [body setStringValue:message];
 8     NSXMLElement *message1 = [NSXMLElement elementWithName:@"message"];
 9     [message1 addAttributeWithName:@"type" stringValue:@"chat"];
10     NSString *to = [NSString stringWithFormat:@"%@@helloworldtekimac-mini.local", user];
11     [message1 addAttributeWithName:@"to" stringValue:to];
12     [message1 addChild:body];
13     [self.xmppStream sendElement:message1];
14 }