Programmatically retrieve the site URL from inside an Azure website(以编程方式从 Azure 网站内部检索站点 URL)
问题描述
Azure websites have a default "site URL" provided by Azure, something like mysite.azurewebsites.net. Is it possible to get this URL from inside the website itself (i.e. from the ASP.NET application)?
There are several properties in the Environment and HttpRuntime class that contain the name of the website (e.g. "mysite") so that is easily accessible. Things are getting complicated when not the default but e.g. the staging slot of the site is accessed (that has the site URL like mysite-staging.azurewebsites.net).
So I was just wondering whether there is a straightforward way of getting this site URL directly. If not, then using one of the mentioned classes to get the site name and then somehow detecting the site slot (that could e.g. be set through a configuration value from the Azure portal) would be the solution
Edit (2/4/16): You can get the URL
from the appSetting/EnvironmentVariable websiteUrl
. This will also give you the custom hostname if you have one setup.
There are few of ways you can do that.
1. From the HOSTNAME
header
This is valid only if the request is hitting the site using <SiteName>.azurewebsites.net
. Then you can just look at the HOSTNAME
header for the <SiteName>.azurewebsites.net
var hostName = Request.Headers["HOSTNAME"].ToString()
2. From the WEBSITE_SITE_NAME
Environment Variable
This just gives you the <SiteName>
part so you will have to append the .azurewebsites.net
part
var hostName = string.Format("http://{0}.azurewebsites.net", Environment.ExpandEnvironmentVariables("%WEBSITE_SITE_NAME%"));
3. From bindingInformation
in applicationHost.config
using MWA
you can use the code here to read the IIS config file applicationHost.config
and then read the bindingInformation
property on your site. Your function might look a bit different, something like this
private static string GetBindings()
{
// Get the Site name
string siteName = System.Web.Hosting.HostingEnvironment.SiteName;
// Get the sites section from the AppPool.config
Microsoft.Web.Administration.ConfigurationSection sitesSection =
Microsoft.Web.Administration.WebConfigurationManager.GetSection(null, null,
"system.applicationHost/sites");
foreach (Microsoft.Web.Administration.ConfigurationElement site in sitesSection.GetCollection())
{
// Find the right Site
if (String.Equals((string) site["name"], siteName, StringComparison.OrdinalIgnoreCase))
{
// For each binding see if they are http based and return the port and protocol
foreach (Microsoft.Web.Administration.ConfigurationElement binding in site.GetCollection("bindings")
)
{
var bindingInfo = (string) binding["bindingInformation"];
if (bindingInfo.IndexOf(".azurewebsites.net", StringComparison.InvariantCultureIgnoreCase) > -1)
{
return bindingInfo.Split(':')[2];
}
}
}
}
return null;
}
Personally, I would use number 2
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本文标题为:以编程方式从 Azure 网站内部检索站点 URL


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