Warum sendet mein HTTP-Webanforderungscode keine Anforderung?

Question

Wie die folgenden HTTP-Anforderungen in C#

POST http://10.0.0.1/st_poe.cgi 

Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwave-flash, */* 
Referer: http://10.0.0.1/RST_st_poe.htm 
Accept-Language: en-US 
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0) 
Content-Type: application/x-www-form-urlencoded 
Accept-Encoding: gzip, deflate 
Host: 10.0.0.1 
Content-Length: 21 
Connection: Keep-Alive 
Pragma: no-cache 
Authorization: Basic YWStaW47c3Jsa3NobQ== 

ConMethod=++Connect++ 

Ich versuche schreiben es mit dem folgenden Code zu tun. Es funktioniert nicht.

  string user = Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(username + ":" + password)); 

      byte[] bytes = System.Text.Encoding.ASCII.GetBytes("ConMethod=++Connect++"); 

      HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://10.0.0.1/st_poe.cgi"); 

      request.Method = "POST"; 
      request.Headers.Add("Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwave-flash, */*"); 
      request.Referer = "http://10.0.0.1/RST_st_poe.htm"; 
      request.Headers.Add("Accept-Language: en-US"); 
      request.UserAgent = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)"; 
      request.ContentType = "application/x-www-form-urlencoded"; 
      request.Headers.Add("Accept-Encoding: gzip, deflate"); 
      request.ContentLength = bytes.Length; 
      request.Headers.Add("Host: 10.0.0.1"); 
      request.Headers.Add("Connection: Keep-Alive"); 
      request.Headers.Add("Pragma: no-cache"); 
      request.Headers.Add("Authorization: Basic "+user); 


      Stream reqStream = request.GetRequestStream(); 

      reqStream.Write(bytes, 0, bytes.Length); 

      reqStream.Close(); 

Kann jemand darauf hinweisen, wo ich vermasselt bin. Ich verwende HttpWebRequest zum ersten Mal.

Answer 1

Sie sollten die aktuelle Anfrage mit

var response = request.GetResponse(); 

Alternativ ausführen, können Sie die einfachere System.Net.WebClient-Klasse verwenden:

var client = new WebClient(); 
client.Headers["..."] = ...; 
// Use one of the DownloadXXX/UploadXXX methods. 
var responseBody = client.UploadData("Url", dataToUpload); 

Answer 2

Mehrdad hat Recht. Ich werde nur hinzufügen, dass, wenn Sie HttpWebRequest bleiben gehen, dann müssen Sie lernen, verwenden Blöcke für jede Ressource „mit“ ordnen Sie, dass IDisposable implementiert:

var user = 
    Convert.ToBase64String(
     Encoding.UTF8.GetBytes(username + ":" + password)); 

var bytes = Encoding.ASCII.GetBytes("ConMethod=++Connect++"); 

var request = 
    (HttpWebRequest) WebRequest.Create("http://10.0.0.1/st_poe.cgi"); 

request.Method = "POST"; 
request.Headers.Add(
    "Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwave-flash, */*"); 
request.Referer = "http://10.0.0.1/RST_st_poe.htm"; 
request.Headers.Add("Accept-Language: en-US"); 
request.UserAgent = 
    "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)"; 
request.ContentType = "application/x-www-form-urlencoded"; 
request.Headers.Add("Accept-Encoding: gzip, deflate"); 
request.ContentLength = bytes.Length; 
request.Headers.Add("Host: 10.0.0.1"); 
request.Headers.Add("Connection: Keep-Alive"); 
request.Headers.Add("Pragma: no-cache"); 
request.Headers.Add("Authorization: Basic " + user); 

using (var reqStream = request.GetRequestStream()) 
{ 
    reqStream.Write(bytes, 0, bytes.Length); 
} 

using (var response = (HttpWebResponse) request.GetResponse()) 
{ 
    using (var responseStream = response.GetResponseStream()) 
    { 
     using (var reader = new StreamReader(responseStream)) 
     { 
      return reader.ReadToEnd(); 
     } 
    } 
}