如何从需要身份验证的URL检索文件？

Question

我正在Unity中制作一个工具来从服务器检索数据。服务器的界面可以提供URL，我们稍后可以单击这些URL，以返回XML或CSV文件以及来自该服务器的查询结果。但是，它需要基本身份验证。单击链接时，它只是弹出一个登录屏幕，然后才给我结果。如果我尝试[思考]我在Unity中知道的内容（从WebRequest.GetResponse（）开始），它只会失败并说我无权。它不显示用于身份验证的弹出窗口。那么，如何在使用Unity访问时让该登录弹出窗口出现，并等待登录结果以获取文件？还是有某种标准化的方法可以在链接本身中提供该信息？

Answer 1

//try just in case something went wrong whith calling the api
try
{
    //Use using so that if the code end the client disposes it self
    using (HttpClient client = new HttpClient())
    {
        //Setup authentication information
        string yourusername = "username";
        string yourpwd = "password";
        //this is when you expect json to return from the api
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
        //add the authentication to the request
        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", 
            Convert.ToBase64String(
                System.Text.ASCIIEncoding.ASCII.GetBytes($"{yourusername}:{yourpwd}")));
        //api link used to make the call
        var requestLink = $"apiLink";
        using (HttpResponseMessage response = client.GetAsync(requestLink).Result)
        {
            //Make sure the request was successfull before proceding
            response.EnsureSuccessStatusCode();
            //Get response from website and convert to a string
            string responseBody = response.Content.ReadAsStringAsync().Result;
            //now you have the results
        }
    }
}
//Catch the exception if something went from and show it!
catch (Exception)
{
    throw;
}

Answer 2

    String username = "Superman"; // Obviously handled secretly
    String pw = "ILoveLex4evar!"; // Obviously handled secretly
    String url = "https://www.SuperSecretServer.com/123&stuff=?uhh";
    String encoded = System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(username + ":" + pw));
    CookieContainer myContainer = new CookieContainer();
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
    request.Headers.Add("Authorization", "Basic " + encoded);
    try
    {
        using (WebResponse response = request.GetResponse())
        {
            using (Stream responseStream = response.GetResponseStream())
            {
                using (FileStream xml = File.Create("filepath/filename.xml"))
                {
                    byte[] buffer = new byte[BufferSize];
                    int read;
                    while ((read = responseStream.Read(buffer, 0, buffer.Length)) > 0)
                    {
                        xml.Write(buffer, 0, read);
                    }
                }
            }
        }
    }