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<blockquote data-quote="TwinHeadedEagle" data-source="post: 525536" data-attributes="member: 6533"><p>Instead of querying with HTTP/HTTPS protocol which consumes more bandwidth, we have decided to query with small DNS packages and if it also fails then we are querying with HTTP. </p><p></p><p>We query a sub domain of Zemana (<a href="http://magic.zemana.com/" target="_blank">magic.zemana.com</a>) trough OpenDNS which always resolves to a hard-coded A record which is "168.62.41.41", if it fails we are trying DynDNS, if it also fails then start checking known content with HTTP on <a href="http://cdn9.zemana.com/CacheControl.bin" target="_blank">http://cdn9.zemana.com/CacheControl.bin</a>. Where the CacheControl.bin content is always expected to be 5A454D414E41</p><p></p><p>This process does not pose any risk to you nor does it decrease the performance of your PC. Since we are using small DNS packages every 5 sec, it consumes a very small network traffic, nearly invisible.</p></blockquote><p></p>
[QUOTE="TwinHeadedEagle, post: 525536, member: 6533"] Instead of querying with HTTP/HTTPS protocol which consumes more bandwidth, we have decided to query with small DNS packages and if it also fails then we are querying with HTTP. We query a sub domain of Zemana ([URL='http://magic.zemana.com/']magic.zemana.com[/URL]) trough OpenDNS which always resolves to a hard-coded A record which is "168.62.41.41", if it fails we are trying DynDNS, if it also fails then start checking known content with HTTP on [URL]http://cdn9.zemana.com/CacheControl.bin[/URL]. Where the CacheControl.bin content is always expected to be 5A454D414E41 This process does not pose any risk to you nor does it decrease the performance of your PC. Since we are using small DNS packages every 5 sec, it consumes a very small network traffic, nearly invisible. [/QUOTE]
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