protected byte[] DownloadCore()
{
WebRequest Web;
WebResponse Rsp;
System.IO.Stream Stm;
Web = WebRequest.Create(_url);
HttpRequest Request = HttpContext.Current.Request;
string cookies = Request.Headers["Cookie"];
Web.Headers.Add(HttpRequestHeader.Cookie, cookies);
((HttpWebRequest)Web).UserAgent = @"Mozilla/4.0 (compatible; Shotgun Webdownloader 1.0; Windows NT 5.1; )";
if (_postdata != null)
{//以post方式提交
Web.Method = "POST";
if (_Encoder == null)
{
_Encoder = System.Text.ASCIIEncoding.UTF8;
}
((HttpWebRequest)Web).ServicePoint.Expect100Continue = false;
//Web.Headers[HttpRequestHeader.ContentLength] = _Encoder.EncodingName;
Web.Headers[HttpRequestHeader.ContentEncoding] = _Encoder.WebName;
((HttpWebRequest)Web).ContentType = @"application/x-www-form-urlencoded";
StreamWriter pdStm = new StreamWriter(Web.GetRequestStream(), _Encoder);
pdStm.Write(_postdata);
pdStm.Close();
pdStm.Dispose();
}
//Web.Timeout = _timeOut;
try
{
Rsp = Web.GetResponse();
}
catch (Exception ex)
{
if (Request.IsLocal)
{
throw ex;
}
return(null);
}
int MaxLength, RecvicedLength, r;
MaxLength = (int)Rsp.ContentLength;
RecvicedLength = 0;
byte[] bin = new byte[MaxLength];
Stm = Rsp.GetResponseStream();
do
{
r = Stm.Read(bin, RecvicedLength, MaxLength - RecvicedLength);
RecvicedLength += r;
}while (RecvicedLength < MaxLength);
Stm.Close();
Stm.Dispose();
Rsp.Close();
return(bin);
}
