我的帖子请求https://qrng.physik.hu-berlin.de/失败了，为什么？

Question

https://qrng.physik.hu-berlin.de/的页面提供了一个高比特率的量子数生成器Web服务，我试图访问该服务。

但是我无法做到这一点。这是我当前的代码：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using S=System.Text; 
using System.Security.Cryptography; 
using System.IO; 
namespace CS_Console_App 
{ 
    class Program 
    { 
     static void Main() 
     { 
      System.Net.ServicePointManager.Expect100Continue = false; 
      var username = "testuser"; 
      var password = "testpass"; 
      System.Diagnostics.Debug.WriteLine(Post("https://qrng.physik.hu-berlin.de/", "username="+username+"&password="+password)); 
      Get("http://qrng.physik.hu-berlin.de/download/sampledata-1MB.bin"); 
     } 
     public static void Get(string url) 
     { 
      var my_request = System.Net.WebRequest.Create(url); 
      my_request.Credentials = System.Net.CredentialCache.DefaultCredentials; 
      var my_response = my_request.GetResponse(); 
      var my_response_stream = my_response.GetResponseStream(); 
      var stream_reader = new System.IO.StreamReader(my_response_stream); 
      var content = stream_reader.ReadToEnd(); 
      System.Diagnostics.Debug.WriteLine(content); 
      stream_reader.Close(); 
      my_response_stream.Close(); 
     } 
     public static string Post(string url, string data) 
     { 


      string vystup = null; 
      try 
      { 
       //Our postvars 
       byte[] buffer = System.Text.Encoding.ASCII.GetBytes(data); 
       //Initialisation, we use localhost, change if appliable 
       System.Net.HttpWebRequest WebReq = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url); 
       //Our method is post, otherwise the buffer (postvars) would be useless 
       WebReq.Method = "POST"; 
       //We use form contentType, for the postvars. 
       WebReq.ContentType = "application/x-www-form-urlencoded"; 
       //The length of the buffer (postvars) is used as contentlength. 
       WebReq.ContentLength = buffer.Length; 
       //We open a stream for writing the postvars 
       Stream PostData = WebReq.GetRequestStream(); 
       //Now we write, and afterwards, we close. Closing is always important! 
       PostData.Write(buffer, 0, buffer.Length); 
       PostData.Close(); 
       //Get the response handle, we have no true response yet! 
       System.Net.HttpWebResponse WebResp = (System.Net.HttpWebResponse)WebReq.GetResponse(); 
       //Let's show some information about the response 
       Console.WriteLine(WebResp.StatusCode); 
       Console.WriteLine(WebResp.Server); 

       //Now, we read the response (the string), and output it. 
       Stream Answer = WebResp.GetResponseStream(); 
       StreamReader _Answer = new StreamReader(Answer); 
       vystup = _Answer.ReadToEnd(); 

       //Congratulations, you just requested your first POST page, you 
       //can now start logging into most login forms, with your application 
       //Or other examples. 
      } 
      catch (Exception ex) 
      { 
       throw ex; 
      } 
      return vystup.Trim() + "\n"; 

     } 
    } 

} 

我有403禁止错误，当我尝试做 http://qrng.physik.hu-berlin.de/download/sampledata-1MB.bin GET请求

。

调试升技后，我意识到，即使我提供了有效的用户名和密码，在POST请求后发送的响应html表明我实际上没有在POST请求后登录系统。

有谁知道为什么会出现这种情况，我该如何解决它以致电该服务？

凹凸。任何人都可以得到这个工作或是网站只是一个骗局？

Answer 1

该网站肯定不是一个骗局。我开发了发生器，并将其科学信誉放在其中。问题在于你试图以一种无意的方式使用该服务。示例文件实际上只是为了基本的测试目的而手动下载。将数据提取到应用程序中的自动访问意味着通过我们提供的DLL来实现。另一方面，我不知道有任何明确的意图阻止您的实施工作。我想如果一个Web浏览器可以登录和获取数据，一些程序应该能够做到这一点。也许只有登录请求稍微复杂一点。不知道。服务器软件是由其他人开发的，现在我无法用它来打扰他。

米克

Answer 2

你试过描述on MSDN page改变这种

my_request.Credentials = System.Net.CredentialCache.DefaultCredentials 

到

my_request.Credentials = new NetworkCredential(UserName,Password); 

？

Answer 3

其实，发电机现在也可以购买。看到这里： http://www.picoquant.com/products/pqrng150/pqrng150.htm