works in SP1 but not SP2

C

coldfusion244

Junior Contributor
Joined
Nov 24, 2004
Messages
266
Location
Philadelphia
I found some code for downloading the contents of a webpage, and it works great...in everything but XP SP2. For some reason it always throws an exception.
[CS]
public class CSDownloadURL
{
private string m_strURL;
public void setURL1( string strURL )
{
m_strURL = strURL;
}

public void DownloadURL(out string strContents)
{
WebRequest req = WebRequest.Create(m_strURL);
WebResponse res = req.GetResponse();
int iTotalBuff = 0;
Byte[] Buffer = new Byte[128];
Stream stream = res.GetResponseStream();
iTotalBuff = stream.Read(Buffer, 0, 128);
StringBuilder strRes = new StringBuilder("");

while(iTotalBuff != 0)
{
strRes.Append(Encoding.ASCII.GetString(Buffer, 0, iTotalBuff));
iTotalBuff = stream.Read(Buffer, 0, 128);
}

strContents = strRes.ToString();

}

}
[/CS]

Why would it work fine in everything but XP SP2 and windows 2003 server?
 
PlausiblyDamp said:
Any chance of saying what exception and where it occurs?
Also have you considered that the XP firewall may be causing problems connecting?
Click to expand...

The exception occurs when I ask it to download the source to a webpage, here is the exception text (I am unsure of which line as it does not error on my SP1 machine[development machine])

System.Net.WebException: The underlying connection was closed: The server
committed an HTTP protocol violation.
at System.Net.HttpWebRequest.CheckFinalStatus()
at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at System.Net.HttpWebRequest.GetResponse()
at webdownload.CSDownloadURL.DownloadURL(String& strContents)
at webdownload.Form1.button1_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons
button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)


Any ideas? I am definately going to check out firewall issue in SP2 though, great idea!
 
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