How can I get the baseurl of site?

Question

I want to write a little helper method which returns the base URL of the site. This is what I came up with:

public static string GetSiteUrl()
{
    string url = string.Empty;
    HttpRequest request = HttpContext.Current.Request;

    if (request.IsSecureConnection)
        url = "https://";
    else
        url = "http://";

    url += request["HTTP_HOST"] + "/";

    return url;
}

Is there any mistake in this, that you can think of? Can anyone improve upon this?

Check this http://stackoverflow.com/questions/3933662/in-asp-net-what-is-the-quickest-way-to-get-the-base-url-for-a-request — Sandeep G B, Sep 14 '11 at 08:41
possible duplicate of [How can I get my webapp's base URL in ASP.NET MVC?](http://stackoverflow.com/questions/1288046/how-can-i-get-my-webapps-base-url-in-asp-net-mvc) — Serj Sagan, Oct 14 '13 at 19:07

score 367 · Accepted Answer · edited Sep 14 '11 at 14:14

367

Try this:

string baseUrl = Request.Url.Scheme + "://" + Request.Url.Authority + 
    Request.ApplicationPath.TrimEnd('/') + "/";

edited Sep 14 '11 at 14:14

Andomar

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answered Sep 14 '11 at 08:39

Frank Allenby

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This is the only answer I've found that deals with the case where a site an application which is a child of a top level website in IIS. – John Mar 01 '13 at 10:49
6

string.Format("{0}{1}/", Request.Url.GetLeftPart(UriPartial.Authority), Request.ApplicationPath.TrimEnd('/')) – diegohb Oct 21 '13 at 20:17
2

Request.Url.Scheme does not always work when you have internal http configured and SSL termination set up for https internally on a server, but running https* outside. To get around this, I simply made an environment specific AppSetting Key "UrlScheme" with value of either "http" or "https" based on where the website resides. This setting in the web.config can be accessed by ConfigurationManager.AppSettings["Key"] – Ben Sewards Jan 15 '14 at 22:51
4

This doesn't take into account load balancing, where decryption occurs, or forward proxies. You can end up with an incorrect address using this, so be careful and know where your website had been deployed to. – Conor Gallagher Mar 10 '15 at 08:54
1

$"{System.Web.HttpContext.‌Current.Request.Url.GetLeftPart(UriPartial.Authority)}{System.Web.HttpContext.Cur‌rent.Request.ApplicationPath?.TrimEnd('/')}/"; – Ryan Penfold Sep 17 '15 at 07:03
Even though this answer has 362 votes, When Application is starting, `Request` does not exists generally on any routine that runs before any request arrive from user e.g. when code in Application_start or static class methods, handler registration code ... – AaA Jan 05 '23 at 02:48

Warlock · Answer 2 · 2012-12-14T09:58:07.260

176

string baseUrl = Request.Url.GetLeftPart(UriPartial.Authority)

That's it ;)

edited Dec 14 '12 at 09:58

answered Dec 14 '12 at 09:25

Warlock

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This doesn't work for Virtual or Application Path. You should use Request.ApplicationPath in addition to the left part. – Warlock Aug 20 '13 at 19:58
base url is httpx://domain.com:[port]/ you must add app path yourself to this solution – Pawel Cioch Aug 17 '16 at 19:07

score 10 · Answer 3 · answered Dec 14 '14 at 20:08

The popular GetLeftPart solution is not supported in the PCL version of Uri, unfortunately. GetComponents is, however, so if you need portability, this should do the trick:

uri.GetComponents(
    UriComponents.SchemeAndServer | UriComponents.UserInfo, UriFormat.Unescaped);

score 7 · Answer 4 · answered Aug 05 '13 at 19:48

7

This is a much more fool proof method.

VirtualPathUtility.ToAbsolute("~/");

answered Aug 05 '13 at 19:48

Daniel A. White

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@Daniel call won't return simply `/` if you host in some application domain e.g http://yourserver/yourapplicationname/yourrootpath – vibs2006 Jun 20 '18 at 14:44
@vibs2006 yea its kind of an ambigous question – Daniel A. White Jun 20 '18 at 14:57

score 6 · Answer 5 · answered Mar 14 '13 at 11:00

To me, @warlock's looks like the best answer here so far, but I've always used this in the past;

string baseUrl = Request.Url.GetComponents(
    UriComponents.SchemeAndServer, UriFormat.UriEscaped)

Or in a WebAPI controller;

string baseUrl = Url.Request.RequestUri.GetComponents(
    UriComponents.SchemeAndServer, UriFormat.Unescaped)

which is handy so you can choose what escaping format you want. I'm not clear why there are two such different implementations, and as far as I can tell, this method and @warlock's return the exact same result in this case, but it looks like GetLeftPart() would also work for non server Uri's like mailto tags for instance.

returns invalid url for cases where you are behind ngrok tunnel and https — Mohammad Zekrallah, May 18 '20 at 19:55

score 6 · Answer 6 · answered May 02 '13 at 20:06

6

I believe that the answers above doesn't consider when the site is not in the root of the website.

This is a for WebApi controller:

string baseUrl = (Url.Request.RequestUri.GetComponents(
                    UriComponents.SchemeAndServer, UriFormat.Unescaped).TrimEnd('/') 
                 + HttpContext.Current.Request.ApplicationPath).TrimEnd('/') ;

answered May 02 '13 at 20:06

rufo

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From within a controller use Configuration.VirtualPathRoot as it is host independent. – Darrel Miller Sep 24 '13 at 15:54

score 4 · Answer 7 · edited Mar 23 '15 at 12:55

4

Based on what Warlock wrote, I found that the virtual path root is needed if you aren't hosted at the root of your web. (This works for MVC Web API controllers)

String baseUrl = Request.RequestUri.GetLeftPart(UriPartial.Authority) 
+ Configuration.VirtualPathRoot;

edited Mar 23 '15 at 12:55

Irvin Dominin

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answered Nov 21 '13 at 22:43

SpazDude

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score 4 · Answer 8 · answered Feb 18 '15 at 06:20

4

I go with

HttpContext.Current.Request.ServerVariables["HTTP_HOST"]

answered Feb 18 '15 at 06:20

Talha

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This will add the protocol: (HttpContext.Request.ServerVariables["HTTPS"] == "off" ? "http://" : "https://") + HttpContext.Request.ServerVariables["HTTP_HOST"] – onemorecupofcoffee Oct 20 '17 at 14:43

score 1 · Answer 9 · edited Jan 27 '20 at 09:12

This works for me.

Request.Url.OriginalString.Replace(Request.Url.PathAndQuery, "") + Request.ApplicationPath;

Request.Url.OriginalString: return the complete path same as browser showing.
Request.Url.PathAndQuery: return the (complete path) - (domain name + PORT).
Request.ApplicationPath: return "/" on hosted server and "application name" on local IIS deploy.

So if you want to access your domain name do consider to include the application name in case of:

IIS deployment
If your application deployed on the sub-domain.

====================================

For the dev.x.us/web

it return this strong text

score 1 · Answer 10 · answered Apr 28 '15 at 15:19

1

I'm using following code from Application_Start

String baseUrl = Path.GetDirectoryName(HttpContext.Current.Request.Url.OriginalString);

answered Apr 28 '15 at 15:19

Crispijn Lange

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score 1 · Answer 11 · edited Mar 19 '19 at 11:43

1

Please use the below code

string.Format("{0}://{1}", Request.url.Scheme, Request.url.Host);

edited Mar 19 '19 at 11:43

Mohan Singh

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answered Jun 01 '18 at 15:12

Pranav Joseph

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Please explain your code so other users can understand its functionality. Thanks! – Ignacio Ara Jun 01 '18 at 15:37
The Port component is missing – Arvin May 25 '23 at 00:22

score -2 · Answer 12 · answered Sep 14 '11 at 08:50

you could possibly add in the port for non port 80/SSL?

something like:

if (HttpContext.Current.Request.ServerVariables["SERVER_PORT"] != null && HttpContext.Current.Request.ServerVariables["SERVER_PORT"].ToString() != "80" && HttpContext.Current.Request.ServerVariables["SERVER_PORT"].ToString() != "443")
            {
                port = String.Concat(":", HttpContext.Current.Request.ServerVariables["SERVER_PORT"].ToString());
            }

and use that in the final result?

`Request.Url.Authority` will include the port number if it's non-standard — Andomar, Sep 14 '11 at 08:56

How can I get the baseurl of site?

12 Answers12

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