Issues with downloading CDN files from certain locations. RRS feed

  • Question

  • Our company has files we provide for our customers world wide.  They are between 4-100MB each.  These files are published as CDN files.  Certain customers have been having issues downloading these files.  Our application reads these via http.  The application appears to download some of the file (like 12%) and at some point they recieve a SocketException (see below).  The customers have also tried downloading these directly with Chrome or I.E. and the file will also fail to download in the browers (getting errors like "Interuped").

    So far most US clients seem OK.  But this paticular issue was experienced by a customer in Switzerland.  The customer apparantly tried the file download inside and outside their firewall and experienced the same failure.

    Any idea on things we can try?  Or how to trouble shoot the issue?

    File URL:  http://datacdn.pertrac.com/investmentmdbdatafeed/PerTracIndexes_se_2012-03-07_V7.ptdb


    System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
       at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
       at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
       --- End of inner exception stack trace ---
       at System.Net.ConnectStream.Read(Byte[] buffer, Int32 offset, Int32 size)
       at PerTrac.AddIn.PerTrac.Import.DownloadDatabaseTask.Download(String url, String securityKey, String destFilename, DateTime updateDate, IContext`1 context)

    Wednesday, March 14, 2012 9:10 PM


All replies

  • Hello.

    It seems like a network connectivity issue. Something like low bandwidth, low time-our or something like this. It's difficult to say what's exactly wrong without access to customers who have such a problems. Can you troubleshoot directly, for example, computer of customer who have such a problem? 

    Thursday, March 15, 2012 3:48 AM
  • We don't have direct access to the customer's machine.  But they do have IT staff on hand that were willing to work with us.  The customer's IT was also testing using wget to get the CDN file and having errors downloading the files.  I'm trying to get the log to see what issues this utility reported.
    Thursday, March 15, 2012 2:53 PM
  • Hi,

    It seems a very strange problem, i suggest you contact our support on:


    Hope it helps.

    Please mark the replies as answers if they help or unmark if not. If you have any feedback about my replies, please contact msdnmg@microsoft.com Microsoft One Code Framework

    • Marked as answer by Arwind - MSFT Wednesday, March 21, 2012 10:32 AM
    Friday, March 16, 2012 1:30 AM