Errors Uploading the File in W3C Validator

Hi,

I am trying to Upload my file at W3C validator for validation but my code
is working for small size file but it gives (500) Internal Server error for
large size HTML File .

Pasting my code below , is there any change I need to made.

Code :


static void Main(string[] args)

{

string urlOfTool = "http://validator.w3.org/check";

string fileToValidate = @"C:\Users\v-harsho\Desktop\Code Snippet\msn.htm";

ValidateFile(urlOfTool, fileToValidate);

}

public static void ValidateFile(string urlOfTool, string fileToValidate)

{

string boundary = "----------------------------" +DateTime
.Now.Ticks.ToString("x");

string data = "--" + boundary + "\r\n";

data += "Content-Disposition: form-data; name=\"uploaded_file\";
filename=\"" + fileToValidate + "\"\r\n";

data += "Content-Type: text/html \r\n";

byte[] dataByte = System.Text.Encoding.UTF8.GetBytes(data);

byte[] fileByte = System.IO.File.ReadAllBytes(fileToValidate);

byte[] end = System.Text.Encoding.UTF8.GetBytes("\r\n--" +boundary +
"--\r\n");

System.Net.ServicePointManager.Expect100Continue = false;

HttpWebRequest httpWebRequest =(HttpWebRequest)WebRequest.Create(urlOfTool);

httpWebRequest.Headers.Add("Accept-Encoding", "gzip, deflate");

httpWebRequest.Accept ="text/html, application/xhtml+xml, */*";

httpWebRequest.Referer = "http://validator.w3.org/";

httpWebRequest.Headers.Add("Pragma","no-cache");

//httpWebRequest.ContentType=

httpWebRequest.Headers.Add("Accept-Language","en-US");

httpWebRequest.UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT
6.1; Trident/5.0)";

httpWebRequest.Method = "POST";

httpWebRequest.ContentType = "multipart/form-data; boundary=" +boundary;

httpWebRequest.ContentLength =dataByte.Length + fileByte.Length+ end.Length;

httpWebRequest.KeepAlive = true;

httpWebRequest.Credentials = System.Net.CredentialCache.DefaultCredentials;

Stream requestStream = httpWebRequest.GetRequestStream();

requestStream.Write(dataByte, 0, dataByte.Length);

requestStream.Write(fileByte, 0, fileByte.Length);

requestStream.Write(end, 0, end.Length);

requestStream.Flush();

requestStream.Close();

WebResponse webResponse = httpWebRequest.GetResponse(); // this is the
location i'm getting the error.

StreamReader reader = new StreamReader(webResponse.GetResponseStream());

string temp = reader.ReadToEnd();

Console.WriteLine(temp);

System.IO.File.WriteAllText("test1.html", temp);

Console.ReadLine();

webResponse.Close();

}



Thanks

Harshit