DefaultCredentials and WebClient

Discussion in 'ASP .Net Security' started by Colin Bowern, Jan 9, 2004.

  1. Colin Bowern

    Colin Bowern Guest

    I'm trying to make a call inside an ASP.NET web application to an external
    quasi-web service (aka FrontPage Server Extensions):

    Dim rpcClient As New WebClient
    Dim rpcData As New NameValueCollection
    Dim rpcResponseArray As Byte()

    rpcData.Add("method", "open service:")
    rpcClient.Credentials = System.Net.CredentialCache.DefaultCredentials
    rpcResponseArray = rpcClient.UploadValues(currentSite.Url.ToString() +
    "/_vti_bin/_vti_aut/author.dll", rpcData)

    The app however, is throwing back a 401 Unauthorized. I've been able to
    validate the right context is passing through the app by checking
    System.Security.Principal.WindowsIdentity.GetCurrent().Name to see the right
    user name. And if I create the credential cache manually, it works:

    Dim myCreds As New NetworkCredential("userid", "password", "mydomain")
    Dim myCache As New CredentialCache
    myCache.Add(New Uri(""), "Basic", myCreds)
    rpcClient.Credentials = myCache

    Any thoughts on why impersonation wouldn't pass through the right
    credentials to teh WebClient class in an ASP.NET web application?

    Colin Bowern, Jan 9, 2004
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