Getting started with XMPP, step by step

English translation of the Chinese original, translated on 2026-10-23. The article body uses automated translation; app descriptions, historical reading notes and video subtitles receive separate editorial checks. Original publication dates, attribution, code and version notes are retained.

“Enrich yourself and increase your value by continuing to learn.” Bison

I will not go into what XMPP does here; I am only beginning to learn it myself. First, drag XMPP into the project, then add the required frameworks: CFNetwork.framework Security.framework libxml2.dylib libresolv.dylib SystemConfiguration.framework CoreLocation.framework AudioToolbox.framework AVFoundation.framework Run the project; if there are no errors, the setup is correct. For chat in our app, we first need to log in and obtain the user's information. Once we have it, check whether the user already exists in Openfire. If not, register the user; otherwise, assign the values automatically and log in to Openfire. [self XmppLogin:dic];

#pragma mark 登陆xmpp
-(void)XmppLogin:(NSDictionary*)userdic{
    App.IM_Account =  [NSString stringWithFormat:@"Bison%@",App.UserId];//拼上前缀
    App.IM_Password =  @"**************";
    [[JEXMPP Shared] XmppLogin];
}

#pragma mark -  登录 退出
-(BOOL)XmppLogin{
    if (![XMPP_Stream isDisconnected]) {
        return YES;
    }
    [XMPP_Stream setHostName:kIM_Host];//设置服务器
    [XMPP_Stream setHostPort:[kIM_Port intValue]];//设置端口

    NSLog(@"jid:%@ ps:%@",App.IM_Account,App.IM_Password);
    if (App.IM_Account == nil || App.IM_Password == nil) {
        return NO;
    }

 XMPPJID *myjid = [XMPPJID jidWithString:[NSString stringWithFormat:@"%@@%@",App.IM_Account,kIM_Domain] resource:@"jp"];//设置了 jid 的 resource 即限制了多点登陆
    
    NSError *error ;
    [XMPP_Stream setMyJID:myjid];
    if (![XMPP_Stream connectWithTimeout:XMPPStreamTimeoutNone error:&error]) {
        NSLog(@"my connected error : %@",error.description);
        return NO;
    }
    return YES;
}

Next, verify whether the user has logged in to Openfire.

//将要连上
- (void)xmppStreamWillConnect:(XMPPStream *)sender{
    NSLog(@"==xmppStreamWillConnect");
}
//连上了 还要验证密码
- (void)xmppStreamDidConnect:(XMPPStream *)sender{
    NSLog(@"xmppStreamDidConnect");
    if (App.IM_Password) {
        NSError *error ;
        if (![XMPP_Stream authenticateWithPassword:App.IM_Password error:&error]) {
            NSLog(@"error authenticate : %@",error.description);
        }
    }
}

//突然掉线了
- (void)xmppReconnect:(XMPPReconnect *)sender didDetectAccidentalDisconnect:(SCNetworkReachabilityFlags)reachabilityFlags {
    NSLog(@"didDetectAccidentalDisconnect : \n %u ", reachabilityFlags);
}
//YES 重连 
- (BOOL)xmppReconnect:(XMPPReconnect *)sender shouldAttemptAutoReconnect:(SCNetworkReachabilityFlags)reachabilityFlags{
    NSLog(@"shouldAttemptAutoReconnect : \n %u ", reachabilityFlags);
    return YES;
}

#pragma mark 发送 成功  失败
- (void)xmppStream:(XMPPStream *)sender didSendMessage:(XMPPMessage *)message{

}
//发送失败
- (void)xmppStream:(XMPPStream *)sender didFailToSendMessage:(XMPPMessage *)message error:(NSError *)error{

}
//发送 成功或失败的 反馈给聊天页面
-(void)XmppSend_Status:(NSInteger)status Msg:(JEChatMessage *)msg{
    NSLog(@"XmppSend_Status 消息发送:%@ \n内容:%@", status == 1 ? @"成功" : @"失败",msg.TextContent);
   
   
}

#pragma mark 接收消息
- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message{
    NSLog(@"%@\n 来新消息了\n from:%@\n to:%@\n type:%@\n message:%@\n body:%@",message,[[message attributeForName:@"from"] stringValue],[[message attributeForName:@"to"] stringValue],[[message attributeForName:@"type"] stringValue],[[message attributeForName:@"message"] stringValue],[[message elementForName:@"body"] stringValue]);
}

That is all for today.
Please point out any shortcomings; I have only recently started working with XMPP too.
Copyright © Bison. Please credit the source when reproducing this article!