Xamarin Forms安卓模拟器无法访问本地部署的ASP.NET Web API接口

我正在开发一款基于ASP.NET Web Application模板的Xamarin Forms应用，目前遇到PostAsync方法调用失败的问题：本地通过IIS启动Web API后用Chrome访问正常，但安卓模拟器无法访问，打印的响应信息如下：

StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: 
System.Net.Http.HttpConnection+HttpConnectionResponseContent, Headers:
{
  Server: Microsoft-HTTPAPI/2.0
  Date: Sun, 26 Sep 2021 06:53:22 GMT
  Connection: close
  Content-Type: text/html; charset=us-ascii
  Content-Length: 334
}

相关代码 #

包含RegisterAsync方法的UserService服务类 #

public class UserService
{

    private string androidApiUrl = "https://10.0.2.2:44358/api/Account/Register";
    private string iOSApiUrl = "https://localhost:44358/api/Account/Register";
    private HttpClient client;
  
    public UserService()
    {
        var httpClientHandler = new HttpClientHandler();
        httpClientHandler.ServerCertificateCustomValidationCallback =
            (msg, cert, chain, err) => { return true; };
        client = new HttpClient(httpClientHandler);
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

    }
    public async Task<bool> RegisterAsync(string username, string pswd, string confmPswd)
    {
        var newAccount = new ModelAccount
        {
            Email = username,
            Password = pswd,
            ConfirmPassword = confmPswd
        };
      
        var json = JsonConvert.SerializeObject(newAccount);
        HttpContent content = new StringContent(json);

        content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json")
        {
            CharSet = Encoding.UTF8.WebName
        };

        try
        {
            var response = await client.PostAsync(androidApiUrl, content);
            Console.WriteLine(response.ToString());
            Console.WriteLine(response.ReasonPhrase);
            Console.WriteLine(response);
            return response.IsSuccessStatusCode;

        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
            throw e;
        }
    }
}

用于JSON序列化的ModelAccount类 #

class ModelAccount
{
    public string Email { get; set; }
    public string Password { get; set; }
    public string ConfirmPassword { get; set; }
}

相关配置截图 #

• Web API属性配置：
• 端口配置：

已尝试的解决方案 #

参考相关技术文档的建议将端口号修改为61902后，问题仍未解决，请求协助排查。

内容的提问来源于stack exchange，提问作者RoyJ