ArgumentOutOfRangeException and ObjectDisposedException in StreamReader.ReadToEnd()

[Patrik Kruse]

Most times the method below are performing al right. Sometimes however (and
much too often) the call to ReadToEnd results in one of the these
exceptions:

- System.ArgumentOutOfRangeException: Non-negative number required.
Parameter name: byteCount

- System.ObjectDisposedException: Cannot access a disposed object named
System.Net.Sockets.NetworkStream. Object name:
System.Net.Sockets.NetworkStream

I am using dotnet framwork 1.1. The application is heavily multithreaded and
runs under heavy load. My best guess is that the error is somehow connected
to the character encoding, but I really don't know...

Any suggestions?


Here comes the C#-code:

public string GetHttpWebRequestText(HttpWebRequest request)

{
string result;
HttpWebResponse response = null;
Stream receiveStream = null;
StreamReader readStream = null;
try
{
response = (HttpWebResponse) request.GetResponse();
cookies=ExtractCookieString(response.Headers.ToString());
receiveStream = response.GetResponseStream();
readStream = new StreamReader(receiveStream, Encoding.UTF8);
result = readStream.ReadToEnd();

readStream.Close();
readStream = null;

receiveStream.Close();
receiveStream = null;

response.Close();
response = null;

return result;
}
catch(Exception ex)
{
throw new Exception("Error getting response", ex);
}
finally
{
if (readStream != null)
{
readStream.Close();
readStream = null;
}
if (receiveStream != null)
{
receiveStream.Close();
receiveStream = null;
}

if (response != null)
{
response.Close();
response = null;
}
}
}


/Patrik Kruse

 

[Jason Sagar]

You probably accidentally closed the Stream object you are using.

Can you post the piece of code you are running? (e.g. where the Stream
object gets created and released)

 

[Patrik Kruse]

I did!

The code snippet is included in my original post, see below.

/Patrik

 

[Patrik Kruse]

I still very much would like some suggestions how to get rid of these
errors...

/Patrik

 

[Brian]

Did you ever find a solution to your problem? I am having a very
similar problem for which I have already posted.

http://groups.google.com/groups?hl=...en&lr=&ie=UTF-8&q=argumentoutofrangeexception


I would appreciate any help that I could get!