Xamarin表单“基本”身份验证不适用于重定向网址

Question

在将网址（ Constants.UrlLoginUser ）更改为子域名之前，以下代码运行正常。我正在使用“基本”身份验证。当我使用原始URL时，它工作正常。我知道重定向发生时正在清除HttpClient Authentication头。有没有办法让它与重定向网址一起使用？我试过使用CredentialCache没有任何成功。我通过重定向网址获得了“ 401 Unauthorized ”回复。

using (var client = new HttpClient())
{
   client.DefaultRequestHeaders.Add("email", TxtEmail.Text);
   client.DefaultRequestHeaders.Add("password", TxtPassword.Text);
   client.DefaultRequestHeaders.Authorization = HttpClientHelper.NdAuth;
   var result = await client.GetAsync(Constants.UrlLoginUser);
} 

这里提供了一个潜在的解决方案answer，但它有点像黑客。

if (response.StatusCode == HttpStatusCode.Unauthorized)
{
    // Authorization header has been set, but the server reports that it is missing.
    // It was probably stripped out due to a redirect.

    var finalRequestUri = response.RequestMessage.RequestUri; // contains the final location after following the redirect.

    if (finalRequestUri != requestUri) // detect that a redirect actually did occur.
    {
        if (IsHostTrusted(finalRequestUri)) // check that we can trust the host we were redirected to.
        {
           response = client.GetAsync(finalRequestUri).Result; // Reissue the request. The DefaultRequestHeaders configured on the client will be used, so we don't have to set them again.
        }
    }
}

在Xamarin Forms上有更清晰的方法来实现这一目标吗？