Getcontent iz write-only streama

Nekaj se igram doma, in uporabljam to metodo za pridobivanje vsebine iz streama(urla):

private string getContent(string url)
        {
            string buffer;
            try
            {

                string target = string.Empty;
                HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);

                HttpWebResponse response = (HttpWebResponse)httpWebRequest.GetResponse();
                try
                {
                    StreamReader streamReader = new StreamReader(response.GetResponseStream(), true);
                    try
                    {
                        buffer = streamReader.ReadToEnd();
                    }
                    finally
                    {
                        streamReader.Close();
                    }
                }
                finally
                {
                    response.Close();
                }
            }
            catch (Exception exp)
            {
                buffer = "Error: " + exp.Message.ToString();
            }

            return (buffer);
        }

Vendar sem ugotovil, da je stream dejansko write-only, kar mi navrže napako pri debugu:

Length = 'stream.Length' threw an exception of type 'System.NotSupportedException'
Position= 'stream.Position' threw an exception of type 'System.NotSupportedException'

Pozna kdo morda kakšen workaround kako pridobiti vsebino streama, če je write-only.. ?

thx

Aja zdele vidm da sm mal blentav ze od delanja server sidea kjer v response pises....ti imas klienta, ki bere response od requesta k si ga naredu. Najverjetneje ni problem da je stream write only ampak to, da response stream ne podpira Position in Length in ti klices ReadFully, kar najbrz hoce vedet kok velik buffer mora alocirat.