How does smackaho.st work?

It basically sends everything you throw at it to your开发者_StackOverflow社区 localhost. Is it possible to do this with apache server and .htaccess? Its also what I used as a callback url when I was developing using twitter's API. So I'm curious. http://smackaho.st

Thanks

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There is no HTTP server involved here at all. The DNS A record for smackaho.st is 127.0.0.1, which refers to your own machine.

Using that name as a "callback url" probably won't work at all, since when Twitter tries to contact smackaho.st, they'll get 127.0.0.1, which refers to their own machine (not yours).