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Rails: How can I obtain the name of the domain that the user entered to access my site?

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I am proposing to have multiple domain name pointing towards a single site. On the site I would like to display the domains name that was used. How can I obtain the name of the domain that the user entered to access my site?

posted Aug 20, 2014 by anonymous

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1 Answer

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One could forge a request with Host header set to 'example.com' and connect to localhost, thus the question.

If the header value is the thing you're looking for: it is contained in request.host.

answer Aug 21, 2014 by Sanketi Garg
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