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Authorization.ProtectionRealm Property

Gets or sets the prefix for Uniform Resource Identifiers (URIs) that can be authenticated with the Message property.

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

'Declaration
Public Property ProtectionRealm As String()

Property Value

Type: System.String()
An array of strings that contains URI prefixes.

The ProtectionRealm property contains a list of URI prefixes that the Message property can be used to authenticate. WebRequest and its descendants compare a URI to this list to determine if the Authorization is valid for a particular URI.

The following code example gets or sets the prefix for URIs that can be authenticated with the Message property.

        Function Authenticate(ByVal challenge As String, ByVal request As WebRequest, ByVal credentials As ICredentials) As Authorization Implements IAuthenticationModule.Authenticate
            Try 
                Dim message As String 
                ' Check if Challenge string was raised by a site which requires 'CloneBasic' authentication. 
                If challenge Is Nothing Or Not challenge.StartsWith("CloneBasic") Then 
                    Return Nothing 
                End If 
                Dim myCredentials As NetworkCredential
                If TypeOf credentials Is CredentialCache Then
                    myCredentials = credentials.GetCredential(request.RequestUri, "CloneBasic")
                    If myCredentials Is Nothing Then 
                        Return Nothing 
                    End If 
                Else
                    myCredentials = CType(credentials, NetworkCredential)
                End If 
                ' Message encryption scheme :  
                ' a)Concatenate username and password seperated by space 
                ' b)Apply ASCII encoding to obtain a stream of bytes 
                ' c)Apply Base64 Encoding to this array of bytes to obtain our encoded authorization message
                message = myCredentials.UserName + " " + myCredentials.Password
                ' Apply AsciiEncoding to 'message' string to obtain it as an array of bytes. 
                Dim ascii As Encoding = Encoding.ASCII
                Dim byteArray(ascii.GetByteCount(message)) As Byte
                byteArray = ascii.GetBytes(message)

                ' Performing Base64 transformation.
                message = Convert.ToBase64String(byteArray)
                Dim myAuthorization As New Authorization("CloneBasic " + message, True)
                Dim protectionRealm() As String = {request.RequestUri.AbsolutePath}
                myAuthorization.ProtectionRealm = protectionRealm

                Return myAuthorization
            Catch e As Exception
                Console.WriteLine("The following exception was raised in Authenticate method:{0}", e.Message)
                Return Nothing 
            End Try 
        End Function 'Authenticate

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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