- ( void )sendMessage { NSString *messageStr =[ NSString stringWithFormat : @"{\"user_name\":\"%@\",\"message\":\"%@\"}" ,[[ NSUserDefaults standardUserDefaults ] valueForKey : @"userIDVal" ], self . messageField . text ]; if ([messageStr length ] > 0 ) { NSXMLElement *body = [ NSXMLElement elementWithName : @"body" ]; [body setStringValue :messageStr]; NSXMLElement *message = [ NSXMLElement elementWithName : @"message" ]; [message addAttributeWithName : @"type" stringValue : @"chat" ]; [message addAttributeWithName : @"to" stringValue : chatWithUser ]; [message addChild :body]; ...