.net - temporarily - ¿Cómo verifico una respuesta 302? Solicitud web

status: 302(found) redirection-the client must take additional action to complete the request.

Question

Usando WebRequest quiero saber si obtengo un

"302 movido temporalmente"

Respuesta en lugar de obtener automáticamente la nueva URL.

Answer 1

Al igual que:

HttpWebResponse response;
int code = (int) response.StatusCode;

El código debe ser

HttpStatusCode.TemporaryRedirect

Answer 2

Si desea detectar una respuesta de redireccionamiento, en lugar de WebRequest cree automáticamente la WebRequest y establezca la propiedad AllowAutoRedirect en false :

HttpWebRequest request = WebRequest.Create(someUrl) as HttpWebRequest;
request.AllowAutoRedirect = false;
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
if (response.StatusCode == HttpStatusCode.Redirect || 
    response.StatusCode == HttpStatusCode.MovedPermanently)
{
    // Do something here...
    string newUrl = response.Headers["Location"];
}

Answer 3

VB Net Code

Function GetRealUrl(someUrl As String) As String
        Dim req As HttpWebRequest = TryCast(WebRequest.Create(someUrl), HttpWebRequest)
        req.AllowAutoRedirect = False
        Dim response As HttpWebResponse = TryCast(req.GetResponse(), HttpWebResponse)
        If response.StatusCode = HttpStatusCode.Redirect OrElse response.StatusCode = HttpStatusCode.MovedPermanently Then
            '' Do something...
            Dim newUrl As String = response.Headers("Location")
            getrealurl = newUrl
        Else
            getrealurl = someUrl
        End If
End Function