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dnttm
httpdns
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HttpDNS记录
背景: 项目中视频播放被运营商DNS劫持。 调研: 域名劫持: 当用户向Local DNS去请求某个域名的真实ip时,运营商的Local DNS服务器回复了一个假网站或内容缓存服务器的ip,最终导致用户访问无法访问到真实ip,从而出现异常。 HttpDNS: 使用HTTP协议向DNS服务器的80端口进行请求,代替传统的DNS协议向DNS服务器的53端口进行请求,绕开了运营商的Local
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