XMPP群聊消息重复，自己收到自己发出的消息，群警告消息如何屏蔽

在XMPP的"groupchat"中，创建群的时候会收到群发的"This room is locked from entry until configuration is confirmed."和"This room is now unlocked."警告，并且每次进群的时候都会收到"This room is not anonymous."警告，而且自己向群发的消息，每次群还会发回给我，看起来就像自己发给自己，造成消息重复。这些问题怎么解决？（问题截图如下）

实际上这些消息其他人也碰到过，群聊的时候会有各种配置项，如果不写配置，默认创建的是Instant room。群聊的时候，自己发给群一条消息，群会帮你广播给群里所有人，所以你收到自己发出的消息也是正常现象。如果你不想收到上述所有的警告，你需要修改"/XMPPFramework的/XMPPFramework/Extenstions/XEP-0136/XMPPMessageArchiving.m"这个路径的框架原文件。(红色的是修改添加的代码)。

- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
{
    XMPPLogTrace();

    XMPPJID *jid = message.from;
    NSString *str = jid.resource;

    //发给自己的消息会忽略
    if ([str isEqualToString:kGlobal.userInfo.sApplyName]) {
        return;
    }

    //群发的警告会忽略 This room is not anonymous.
    if (message.childCount>=2) {
        DDXMLElement *element = message.children[1];
        if (element.childCount>0) {
            DDXMLElement *subChild = element.children[0];
            if (subChild.attributes.count>0) {
                DDXMLNode *statusNode = subChild.attributes[0];
                if ([statusNode.name isEqualToString:@"code"]&&[statusNode.stringValue isEqualToString:@"100"]) {
                    return;
                }
            }
        }
    }

    //忽略群发警告 This room is locked from entry until configuration is confirmed.
    if ([message.body isEqualToString:@"This room is locked from entry until configuration is confirmed."]) {
        return;
    }

    //忽略群发警告 This room is now unlocked.
    if ([message.body isEqualToString:@"This room is now unlocked."]) {
        return;
    }

    if ([self shouldArchiveMessage:message outgoing:NO xmppStream:sender])
    {
        [xmppMessageArchivingStorage archiveMessage:message outgoing:NO xmppStream:sender];
    }
}

改善后的截图如下：

参考链接：

http://www.tuicool.com/articles/ZrIrIn3

http://wiki.jabbercn.org/XEP-0045#.E6.96.B0.E5.BB.BA.E4.BF.9D.E7.95.99.E6.88.BF.E9.97.B4