get_credentials

# File ext/dl/win32/lib/win32/sspi.rb, line 315
                        def get_credentials
                                @credentials = CredHandle.new
                                ts = TimeStamp.new
                                @identity = Identity.new @user, @domain
                                result = SSPIResult.new(API::AcquireCredentialsHandle.call(nil, "Negotiate", SECPKG_CRED_OUTBOUND, nil, @identity.to_p,
                                        nil, nil, @credentials.to_p, ts.to_p))
                                raise "Error acquire credentials: #{result}" unless result.ok?
                        end