解决openfire中发送某些特殊字符会断开xmpp连接的问题

最新推荐文章于 2017-07-05 18:06:32 发布

Joe_n

最新推荐文章于 2017-07-05 18:06:32 发布

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分类专栏： spark+openfire+smack android 开发文章标签： android openfire xmpp

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本文介绍了一个关于OpenFire中对于特定表情过滤的问题及解决方案。通过对源代码进行微调，解决了因表情过滤而导致的连接断开问题。

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    protected char more() throws IOException, XmlPullParserException {
    	final char codePoint  = super.more(); // note - this does NOT return a codepoint now, but simply a (single byte) character!
		if ((codePoint == 0x0) ||  // 0x0 is not allowed, but flash clients insist on sending this as the very first character of a stream. We should stop allowing this codepoint after the first byte has been parsed.
				(codePoint == 0x9) ||          				     
				(codePoint == 0xA) ||
				(codePoint == 0xD) ||
				((codePoint >= 0x20) && (codePoint <= 0xD7FF)) ||
				((codePoint >= 0xE000) && (codePoint <= 0xFFFD)) ||
				((codePoint >= 0x10000) && (codePoint <= 0x10FFFF))) {
			return codePoint;
		}
		
		throw new XmlPullParserException("Illegal XML character: " + Integer.parseInt(codePoint+"", 16));
    }

由于openfire 对emoj表情的过滤导致，链接断开；因此稍微对源码做修改

    @Override
    protected char more() throws IOException, XmlPullParserException {
    	final char codePoint  = super.more(); // note - this does NOT return a codepoint now, but simply a (single byte) character!
		if ((codePoint == 0x0) ||  // 0x0 is not allowed, but flash clients insist on sending this as the very first character of a stream. We should stop allowing this codepoint after the first byte has been parsed.
				(codePoint == 0x9) ||          				     
				(codePoint == 0xA) ||
				(codePoint == 0xD) ||		
				//fix some emotion
				((codePoint >= 0x20) && (codePoint <= 0xFFFD)) ||				
				((codePoint >= 0x10000) && (codePoint <= 0x10FFFF))) {
			return codePoint;
		}
		
		throw new XmlPullParserException("Illegal XML character: " + Integer.parseInt(codePoint+"", 16));
    }

文章来源于http://blog.youkuaiyun.com/newjueqi/article/details/18260197，感谢作者的分享