Xamarin.android 如何让HttpClient在带有android的pcl中使用NTLM

在pcl中具有适用于Win10 phone的以下功能。 但我无法获得相同的代码返回OK在三星s7与安卓7.0 项目是xamarin forms。 system.net.http的numet是2.2.29。 我已经在win10手机和android项目的UWP中包含了相同的nuget。 我还将用户更改为“域\用户”domain@user", "user@domain"

我已经尝试了设置httpClientHandler.Credentials的其他方法

var credentials = new NetworkCredentials("user", "pass", "domain");
var location = "http://apps.mysite.com/api#/doit";
var httpClientHandler = new HttpClientHandler{
    Credentials = credentials
}
using (var httpClient = new HttpClient(httpClientHandler, true))
{
    httpClient.DefaultRequestHeaders.Accept.Clear();
    httpClient.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
    httpClient.DefaultRequestHeaders.Add("X-FORMS_BASED_AUTH_ACCEPTED", "f");
    try
    {
        var httpResponseMessage = await httpClient.GetAsync(location);
            if (httpResponseMessage.StatusCode != System.Net.HttpStatusCode.OK)
            {
                //handle error
            }
            else
            {
               //do something
            }
    }
    catch (Exception)
    {}
    finally
    {}

}

另一件奇怪的事。当我在android上运行这个程序时，代码会点击wait httpclient.getasync（location）； 然后马上跳到最后

我有一个简单的表单，有用户名和密码输入字段，还有一个OK按钮。 所有三个控件都绑定到viewmodel。通过图标命令单击OK按钮

此代码和视图位于PCL中。它引用了Microsoft.Net.Http。 我有使用PCL的Android和通用Windows Xamarin表单构建

Android属性。默认httpClient，SSL/TLS默认。支撑拱形臂架，臂架-v7a；x86

Android清单：相机、手电筒和互联网

private bool calcEnabled = false;
private ICommand okCommand;
private string message = string.Empty;
private string validatingMessage = "Validating!";
private string unauthorizedMessage = "Invalid Credentials!";
private string authenticatedMessage = "Validated";
private bool validating = false;
public ICommand OkCommand => okCommand ?? (okCommand = new Command<object>((o) => clicked(o), (o) => CalcEnabled));

protected async void clicked(object state)
{
    try
    {
        Validating = true;
        Message = validatingMessage;
        var credentials = new 
        System.Net.NetworkCredential(Helpers.Settings.UserName, Helpers.Settings.Password, "www.domain.com");
        var location = "http://apps.wwwoodproducts.com/wwlocator#/information";
        var httpClientHandler = new System.Net.Http.HttpClientHandler()
        {
            Credentials = credentials.GetCredential(new Uri(location), "NTLM")     };

        using (var httpClient = new System.Net.Http.HttpClient(httpClientHandler))
        {
            httpClient.DefaultRequestHeaders.Accept.Clear();
            httpClient.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
            httpClient.DefaultRequestHeaders.Add("X-FORMS_BASED_AUTH_ACCEPTED", "f");
            try
            {
                var httpResponseMessage = await 
                httpClient.GetAsync(location);

                if (httpResponseMessage.StatusCode != System.Net.HttpStatusCode.OK)
                {
                    Message = unauthorizedMessage;
                }
                else
                {
                    Message = authenticatedMessage;
                    Messenger.Default.Send<bool>(true);
                }
            }
            catch (Exception)
            {
                Message = unauthorizedMessage;
            }
            finally
            {
                Validating = false;
            }
        }
    }
    catch (Exception)
    {
        throw;
    }
}

private bool calcEnabled=false；
专用ICommand命令；
私有字符串消息=string.Empty；
私有字符串validatingMessage=“Validating！”；
私有字符串unauthorizedMessage=“无效凭据！”；
私有字符串authenticatedMessage=“已验证”；
私有布尔验证=假；
公共ICommand OkCommand=>OkCommand？？（okCommand=新命令（（o）=>单击（o），（o）=>CalcEnabled））；
已单击受保护的异步无效（对象状态）
{
尝试
{
验证=真；
消息=验证消息；
var凭证=新的
System.Net.NetworkCredential（Helpers.Settings.UserName，Helpers.Settings.Password，“www.domain.com”）；
变量位置=”http://apps.wwwoodproducts.com/wwlocator#/information";
var httpClientHandler=new System.Net.Http.httpClientHandler（）
{
Credentials=Credentials.GetCredential（新Uri（位置），“NTLM”）}；
使用（var httpClient=new System.Net.Http.httpClient（httpClientHandler））
{
httpClient.DefaultRequestHeaders.Accept.Clear（）；
httpClient.DefaultRequestHeaders.Accept.Add（新的System.Net.Http.Headers.MediaTypeWithQualityHeaderValue（“应用程序/json”））；
httpClient.DefaultRequestHeaders.Add（“基于X-FORMS的认证已接受”，“f”）；
尝试
{
var httpResponseMessage=wait
httpClient.GetAsync（位置）；
if（httpResponseMessage.StatusCode！=System.Net.HttpStatusCode.OK）
{
消息=未经授权的消息；
}
其他的
{
消息=认证消息；
Messenger.Default.Send（true）；
}
}
捕获（例外）
{
消息=未经授权的消息；
}
最后
{
验证=假；
}
}
}
捕获（例外）
{
投掷；
}
}

您遇到了什么错误？401 Unauthorized我看不到代码中有任何错误。如果你可以临时创建用户名和密码，我可以试着看看有什么问题。您可以在几小时内删除这些凭据。不幸的是，这不会发生，这在我们的内部网（由它管理）上运行了很多安全措施。不管怎样，谢谢。我会看看是否能得到更多的错误信息

private bool calcEnabled = false;
private ICommand okCommand;
private string message = string.Empty;
private string validatingMessage = "Validating!";
private string unauthorizedMessage = "Invalid Credentials!";
private string authenticatedMessage = "Validated";
private bool validating = false;
public ICommand OkCommand => okCommand ?? (okCommand = new Command<object>((o) => clicked(o), (o) => CalcEnabled));

protected async void clicked(object state)
{
    try
    {
        Validating = true;
        Message = validatingMessage;
        var credentials = new 
        System.Net.NetworkCredential(Helpers.Settings.UserName, Helpers.Settings.Password, "www.domain.com");
        var location = "http://apps.wwwoodproducts.com/wwlocator#/information";
        var httpClientHandler = new System.Net.Http.HttpClientHandler()
        {
            Credentials = credentials.GetCredential(new Uri(location), "NTLM")     };

        using (var httpClient = new System.Net.Http.HttpClient(httpClientHandler))
        {
            httpClient.DefaultRequestHeaders.Accept.Clear();
            httpClient.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
            httpClient.DefaultRequestHeaders.Add("X-FORMS_BASED_AUTH_ACCEPTED", "f");
            try
            {
                var httpResponseMessage = await 
                httpClient.GetAsync(location);

                if (httpResponseMessage.StatusCode != System.Net.HttpStatusCode.OK)
                {
                    Message = unauthorizedMessage;
                }
                else
                {
                    Message = authenticatedMessage;
                    Messenger.Default.Send<bool>(true);
                }
            }
            catch (Exception)
            {
                Message = unauthorizedMessage;
            }
            finally
            {
                Validating = false;
            }
        }
    }
    catch (Exception)
    {
        throw;
    }
}