Code does not execute correctly on Vista Dual Core

[DiverSteveMO]

Has anyone got HTTPWebRequest and passing a post to an authenticated site to work on a Intel Dual Core Vista Business machine.?

We expect approx. 7Kbytes but afer approx. 3K the code then hangs

My code is shown below:

Thanks all



string FormUri = "http://wwwxxxxxxxx

string FormDataString = "xxxxxxxx"

// Post Form Data

HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(FormUri);

CookieContainer cookieContainer = new CookieContainer();

req.CookieContainer = cookieContainer;

req.Method = "POST";

req.ContentType = "application/x-www-form-urlencoded";

req.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; )";

req.Headers.Add(HttpRequestHeader.AcceptLanguage, "en-GB");

req.KeepAlive = true;

HttpRequestCachePolicy policy = new HttpRequestCachePolicy(HttpRequestCacheLevel.NoCac heNoStore);

req.CachePolicy = policy;

req.Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*";

req.Headers.Add("timeperiod", DateTime.UtcNow.ToLocalTime().ToShortTimeString()) ;

ASCIIEncoding encoding = new ASCIIEncoding();

byte[] FormDataBytes = encoding.GetBytes(FormDataString);

req.ContentLength = FormDataBytes.Length;

Stream stream = req.GetRequestStream();

stream.Write(FormDataBytes, 0, FormDataBytes.Length);

stream.Close();

HttpWebResponse res = (HttpWebResponse)req.GetResponse();

Application.DoEvents();

byte[] b = new byte[1];

int i = 0;

string temp = "";

Stream Strm = res.GetResponseStream();

byte[] a = ReadFully(Strm, 32768);

string response = System.Text.Encoding.ASCII.GetString(a);.



byte[] a = ReadFully(Strm, 32768);



public byte[] ReadFully(Stream stream, int initialLength)

{

/* If we've been passed an unhelpful initial length, just

use 32K. */

if (initialLength < 1)

{

initialLength = 32768;

}

byte[] buffer = new byte[initialLength];

int read = 0;

int chunk;

while ((chunk = stream.Read(buffer, read, buffer.Length - read)) > 0) // After 2 attempts it hangs here

{

read += chunk;

/* If we've reached the end of our buffer, check to see if there's

any more information */

if (read == buffer.Length)

{

int nextByte = stream.ReadByte();

/* End of stream? If so, we're done */

if (nextByte == -1)

{

return buffer;

}

/* Nope. Resize the buffer, put in the byte we've just

read, and continue */

byte[] newBuffer = new byte[buffer.Length * 2];

Array.Copy(buffer, newBuffer, buffer.Length);

newBuffer[read] = (byte)nextByte;

buffer = newBuffer;

read++;

}

}

/* Buffer is now too big. Shrink it. */

byte[] ret = new byte[read];

Array.Copy(buffer, ret, read);

return ret;

}