HTTPWebResponse Error: Unable to read data from the transport connection

I have some code for uploading a file to a HTTPS server.  The code works great for files up to about 150 MB (not sure of the exact cutoff).   But when the files get bigger than that, then I get the following exception:

    "Unable to write data to the transport connection:  An existing connection was forcibly
    closed by the remote host"

    The BaseException is:  "Unable to read data from the transport connection"

Other users (outside our network) can already successfully upload files up to almost 1 GB with no problems...  it just my code that's not working...

I've searched the internet for hours and haven't found the answer.  Please help. Thanks!


'This the core code from a dll class that works with a windows form.
        'Get the length of the selected file
        Dim fi As IO.FileInfo = My.Computer.FileSystem.GetFileInfo(filePath)
        Dim fileLength As Long = fi.Length
        'Create the request
        Dim request As HttpWebRequest = _
            DirectCast(HttpWebRequest.Create(address), HttpWebRequest)
        'Configure request
        request.Credentials = New System.Net.NetworkCredential("UserName", "Password")
        request.Method = WebRequestMethods.Http.Put
        request.KeepAlive = True
        request.Timeout = -1
        request.ContentLength = fileLength.ToString()
         'This is required for our WebDav server 
         request.SendChunked = True
         request.Headers.Add("Translate: f")
         request.AllowWriteStreamBuffering = True
         Dim s As IO.Stream = request.GetRequestStream()
        Dim fs As New IO.FileStream(filePath, IO.FileMode.Open, IO.FileAccess.Read)
        Dim byteTransferRate As Integer = 1024     
        Dim bytes(byteTransferRate - 1) As Byte        
        Dim bytesRead As Integer = 0
        Dim totalBytesRead As Long = 0
            bytesRead = fs.Read(bytes, 0, bytes.Length)
            If bytesRead > 0 Then
                totalBytesRead += bytesRead
                'Write to stream
                s.Write(bytes, 0, bytesRead)
            End If
        Loop While bytesRead > 0
        s = Nothing
        fs = Nothing
         'It basically hangs here for over 10 minutes and then produces the error.
         Dim response As HttpWebResponse = DirectCast(request.GetResponse(), _

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VBRocksConnect With a Mentor Author Commented:
Alas...  I found the answer.  I thought it was hopeless, and had to be abandoned.  But it was not hopeless.  I was able to use the following article to make it work:

If you're having the same or similar problem, find out exactly what type of authentication your server is requiring (ie.:  Basic, Digest, Kerberos, Negotiate, NTLM), and then be patient and work through this Miscroft Support page.  It will help you solve your problem, and you will still be able to use the HttpWebRequest class.

VBRocksAuthor Commented:
Oops... The base exception is:

    "An existing connection was forcibly closed by the remote host"

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