How to get "Host:" header from HttpContext (asp.net)

I need to server parts of my application from different domains.
To be precise I have a sub section of the site that should be served from a region specific domain. For example:

/fr/* should be served from www.domain.fr
/uk/* should be serverd from www.domain.co.uk
and so on.

I’d like to make a route entry that will redirect the request with wrong domain to the correct domain. But I don’t know how to access http header information form HttpContext.

Any help is welcome.

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Answers:

Method 1

Method 2

Method 3

Method 4

Answers:

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Method 1

string requestedDomain = HttpContext.Current.Request.ServerVariables["HTTP_HOST"];
string requestScheme = HttpContext.Current.Request.Url.Scheme;
string requestQueryString = HttpContext.Current.Request.ServerVariables["QUERY_STRING"];
string requestUrl = HttpContext.Current.Request.ServerVariables["URL"];

Method 2

HttpContext.Current.Request.Url.Host

Method 3

I think you want Request.Headers[“host”]

Method 4

In some cases you want to know from the host who sent de request, so I used this

 stsring _Host = HttpContext.Request.Headers["Referer"];

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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