File size 0 in server when receiving HTTPWebRequest RSS

• • Reply
  

  bluesheeva

  Member

  9 Points

  11 Posts

  File size 0 in server when receiving HTTPWebRequest

  Aug 25, 2011 03:57 AM|LINK

  Hi,

  I'm working on the project that need to upload the file using HTTPWebRequest on the client side. When I'm using "PUT" method on the HTTPWebRequest, I'm able to retrieve the file but it's not working with "POST" method. Could someone help me with this problem? Thanks.

  Server side Request Handler code:

   string tokenId = "";
          Stream fin = null;
          try
          {
  
              tokenSignature = false;
  
              //To capture the tokenId
              string MainString = Request.Headers.ToString();
              int FirstChr = MainString.IndexOf("*=");
              MainString = MainString.Substring(FirstChr + 2);
              int secondChr = MainString.IndexOf("%");
              tokenId = MainString.Substring(0, secondChr);
  
              //to Write the received encrypted token into temporary folder
              FileStream fs = new FileStream(AppsConfig.temp + tokenId, FileMode.Create);
              BinaryWriter bw = new BinaryWriter(fs);
  
              //Convert the listenerRequest into InputStream to write the token
              Stream InputStream = Request..InputStream;
              byte[] inData = new byte[32768];
              int bytesRead;
  
              while ((bytesRead = InputStream.Read(inData, 0, inData.Length)) > 0)
              {
                  bw.Write(inData, 0, bytesRead);
              }
  
              //close the connection that is used to write the token
              bw.Close();
              fs.Close();
  
              //Read the temporary encrypted token (for decryption purposes)
              fin = File.OpenRead(AppsConfig.temp + tokenId);
  
              //To read the private key
              Stream prSignKey = File.OpenRead(AppsConfig.privateKey);
              PgpSecretKey pgpSec;
              PgpSecretKeyRingBundle ringBundle = new PgpSecretKeyRingBundle(PgpUtilities.GetDecoderStream(prSignKey));
  
              //Get the company key Id and passphrase
              String[] getText = new String[2];
              int no = 0;
              TextReader readFile = new StreamReader(AppsConfig.keyFile);
  
              do
              {
                  getText[no] = readFile.ReadLine();
                  no++;
              } while (no < 2);
              readFile.Close();
              long KeyId = Int64.Parse(getText[0]);
              Char[] passwd = getText[1].ToCharArray();
              //Get the private key
              pgpSec = ringBundle.GetSecretKey(KeyId);
              PgpPrivateKey pgpPrivate = pgpSec.ExtractPrivateKey(passwd);
  
              //Close all unnecessary connections
              InputStream.Close();
              prSignKey.Close();
              readFile.Close();

  Client Side upload File :

           //Create a web request to the url containing the image
                  HttpWebRequest wReq = (HttpWebRequest)WebRequest.Create(url);
                  wReq.CookieContainer = cc;
                  wReq.Headers.Add("ResourceAccess*:" + tokenId + ":");
  
                  AccessToken combinedToken = getObject();
  
                  // Create a file stream to store the combined token temporary
                  using (FileStream fileStream = new FileStream(ClientConfig.temp + tokenId + ".bin",
                  FileMode.CreateNew, FileAccess.Write, FileShare.None))
                  {
                      // Create a formatter.
                      IFormatter formatter = new BinaryFormatter();
  
                      // Serialize.
                      formatter.Serialize(fileStream, combinedToken);
                  }
  
                  //Perform encryption and signing
                  encryptToken(combinedToken);
  
                  //Create filestream to read the file from hardrive
                  reader = new FileStream(ClientConfig.temp + tokenId + ".asc", FileMode.Open);       
                  wReq.Method = "POST";
                  wReq.ContentLength = reader.Length;
                  wReq.Timeout = 50000;
                  wReq.ContentType = "application/x-www-form-urlencoded";
                  //wReq.AllowWriteStreamBuffering = true;
  
                  //Create network stream to send file over http
                  Stream reqStream = wReq.GetRequestStream();
                  byte[] inData = new byte[32768];
                  int bytesRead = reader.Read(inData, 0, inData.Length);
  
                  //Sending file over http
                  while (bytesRead > 0)
                  {
                      reqStream.Write(inData, 0, bytesRead);
                      bytesRead = reader.Read(inData, 0, inData.Length);
                  }
  
    //Close the request Stream
                  reqStream.Flush();
                  reqStream.Close();
                  reader.Close();
  
                  wReq.BeginGetResponse(new AsyncCallback(ReadCallBack), wReq);

  asp.net

• • Reply
  

  rstrahl

  Contributor

  2233 Points

  375 Posts

  ASPInsiders

  MVP

  Re: File size 0 in server when receiving HTTPWebRequest

  Aug 26, 2011 11:37 PM|LINK

  There should be no difference between a POST and a PUT as far as ASP.NET is concerned. It's only different headers, but requests  for PUT and POST are handled identically so it's likely that there's something else happening that's causing a problem.

  Couple of things to check:

  * Set the Post buffer limit. It might be that that is applied only to POST operations but bypassed with PUT

  * Make sure that POST is enabled in the scriptmap extension (.ASPX or other handler/module) Extension

  However in both of those cases you should get downright server errors if rather than a 0 byte file on the server.

  +++ Rick ---

  Rick Strahl
  West Wind Technologies
  Making waves on the Web
  www.west-wind.com/weblog
  • Marked as answer by Song-Tian - MSFT on Sep 01, 2011 07:46 AM