XMPP development tutorial (5)-send and receive messages

This mainly refers to the user's status update, receiving a message, and sending a message.

First, provide the core code

User online/offline notifications

 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 }

 

Receive messages

 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 }

 

Send message

 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 }

 

XMPP development tutorial (5)-send and receive messages