HttpWebResponse.GetResponseHeader Method
.NET Framework 3.0
Gets the contents of a header that was returned with the response.
Namespace: System.Net
Assembly: System (in system.dll)
Assembly: System (in system.dll)
This example creates a Web request and queries for a response. If the site requires authentication, this example will respond with a challenge string. This string is extracted using GetResponseHeader.
public static void GetPage(String url) { try { Uri ourUri = new Uri(url); // Creates an HttpWebRequest for the specified URL. HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(ourUri); HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse(); Console.WriteLine("\nThe server did not issue any challenge. Please try again with a protected resource URL."); // Releases the resources of the response. myHttpWebResponse.Close(); } catch(WebException e) { HttpWebResponse response = (HttpWebResponse)e.Response; if (response != null) { if (response.StatusCode == HttpStatusCode.Unauthorized) { string challenge = null; challenge= response.GetResponseHeader("WWW-Authenticate"); if (challenge != null) Console.WriteLine("\nThe following challenge was raised by the server:{0}",challenge); } else Console.WriteLine("\nThe following WebException was raised : {0}",e.Message); } else Console.WriteLine("\nResponse Received from server was null"); } catch(Exception e) { Console.WriteLine("\nThe following Exception was raised : {0}",e.Message); } } }
public static void GetPage(String url)
{
try {
Uri ourUri = new Uri(url);
// Creates an HttpWebRequest for the specified URL.
HttpWebRequest myHttpWebRequest = (HttpWebRequest)
WebRequest.Create(ourUri);
HttpWebResponse myHttpWebResponse = (HttpWebResponse)
myHttpWebRequest.GetResponse();
Console.WriteLine("\nThe server did not issue any challenge. "
+ "Please try again with a protected resource URL.");
// Releases the resources of the response.
myHttpWebResponse.Close();
}
catch (WebException e) {
HttpWebResponse response = (HttpWebResponse)e.get_Response();
if (response != null) {
if (response.get_StatusCode().Equals(HttpStatusCode.
Unauthorized)) {
String challenge = null;
challenge = response.GetResponseHeader("WWW-Authenticate");
if (challenge != null) {
Console.WriteLine("\nThe following challenge was "
+ "raised by the server:{0}", challenge);
}
}
else {
Console.WriteLine("\nThe following WebException "
+ "was raised : {0}", e.get_Message());
}
}
else {
Console.WriteLine("\nResponse Received from server was null");
}
}
catch (System.Exception e) {
Console.WriteLine("\nThe following Exception was raised : {0}",
e.get_Message());
}
} //GetPage
} //HttpWebResponseSnippet
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 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.