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UserHostName Property

HttpListenerRequest.UserHostName Property

Gets the DNS name and, if provided, the port number specified by the client.

Namespace: System.Net
Assembly: System (in system.dll)

public string UserHostName { get; }
/** @property */
public String get_UserHostName ()

public function get UserHostName () : String

Not applicable.

Property Value

A String value that contains the text of the request's Host header.

The Host header contains the requested server host name and port number, if specified, separated by a colon (for example, www.contoso.com:8080).

You can use this property to return different responses depending on the host name specified in the request.

For a complete list of request headers, see the HttpRequestHeader enumeration.

The following code example demonstrates using this property.

public static void ShowRequestProperties1 (HttpListenerRequest request)
{
    // Display the MIME types that can be used in the response.
    string[] types = request.AcceptTypes;
    if (types != null)
    {
        Console.WriteLine("Acceptable MIME types:");
        foreach (string s in types)
        {
            Console.WriteLine(s);
        }
    }
    // Display the language preferences for the response.
    types = request.UserLanguages;
    if (types != null)
    {
        Console.WriteLine("Acceptable natural languages:");
        foreach (string l in types)
        {
            Console.WriteLine(l);
        }
    }
    
    // Display the URL used by the client.
    Console.WriteLine("URL: {0}", request.Url.OriginalString);
    Console.WriteLine("Raw URL: {0}", request.RawUrl);
    Console.WriteLine("Query: {0}", request.QueryString);

    // Display the referring URI.
    Console.WriteLine("Referred by: {0}", request.UrlReferrer);

    //Display the HTTP method.
    Console.WriteLine("HTTP Method: {0}", request.HttpMethod);
    //Display the host information specified by the client;
    Console.WriteLine("Host name: {0}", request.UserHostName);
    Console.WriteLine("Host address: {0}", request.UserHostAddress);
    Console.WriteLine("User agent: {0}", request.UserAgent);
}

public static void ShowRequestProperties1(HttpListenerRequest request)
{
    // Display the MIME types that can be used in the response.
    String types[] = request.get_AcceptTypes();
    if (types != null) {
        Console.WriteLine("Acceptable MIME types:");
        for (int iCtr = 0; iCtr < types.get_Length(); iCtr++) {
            String s = types[iCtr];
            Console.WriteLine(s);
        }
    }
    // Display the language preferences for the response.
    types = request.get_UserLanguages();
    if (types != null) {
        Console.WriteLine("Acceptable natural languages:");
        for (int iCtr = 0; iCtr < types.get_Length(); iCtr++) {
            String l = types[iCtr];
            Console.WriteLine(l);
        }
    }
    // Display the URL used by the client.
    Console.WriteLine("URL: {0}", request.get_Url().get_OriginalString());
    Console.WriteLine("Raw URL: {0}", request.get_RawUrl());
    Console.WriteLine("Query: {0}", request.get_QueryString());
    // Display the referring URI.
    Console.WriteLine("Referred by: {0}", request.get_UrlReferrer());
    //Display the HTTP method.
    Console.WriteLine("HTTP Method: {0}", request.get_HttpMethod());
    //Display the host information specified by the client;
    Console.WriteLine("Host name: {0}", request.get_UserHostName());
    Console.WriteLine("Host address: {0}", request.get_UserHostAddress());
    Console.WriteLine("User agent: {0}", request.get_UserAgent());
} //ShowRequestProperties1

Windows 98, Windows Server 2003, Windows XP Media Center Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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