public static void DownloadFile(string urlName, string localName)
{
try
{
Uri uri = new Uri(urlName);
WebRequestExpress request = null;
request = WebRequestExpress.Create(uri, request, true);
request.Header = request.Method + " " + uri.PathAndQuery + " HTTP/1.0\r\n" + request.Headers;
WebResponseExpress response = request.GetResponse();
response.EncodingType = Encoding.UTF8;
byte[] RecvBuffer = new byte[1024];
int nBytes, nTotalBytes = 0;
// loop to receive response buffer
while ((nBytes = response.socket.Receive(RecvBuffer, 0, 1024, SocketFlags.None)) > 0)
{
nTotalBytes += nBytes;
// save block to end of file
SaveToFile(RecvBuffer, nBytes, localName);
if (response.KeepAlive && nTotalBytes >= response.ContentLength && response.ContentLength > 0)
{
break;
}
}
}
catch (Exception ex)
{
throw ex;
}
}
public void Connect(WebRequestExpress request)
{
ResponseUri = request.RequestUri;
socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint remoteEP = new IPEndPoint(Dns.GetHostEntry(ResponseUri.Host).AddressList[0], ResponseUri.Port);
socket.Connect(remoteEP);
}
public void SendRequest(WebRequestExpress request)
{
ResponseUri = request.RequestUri;
request.Header = request.Method + " " + ResponseUri.PathAndQuery + " HTTP/1.0\r\n" + request.Headers;
if (EncodingType != null)
{
socket.Send(EncodingType.GetBytes(request.Header));
}
else
{
socket.Send(Encoding.UTF8.GetBytes(request.Header));
}
}
public static WebRequestExpress Create(Uri uri, WebRequestExpress AliveRequest, bool bKeepAlive)
{
if (bKeepAlive &&
AliveRequest != null &&
AliveRequest.response != null &&
AliveRequest.response.KeepAlive &&
AliveRequest.response.socket.Connected &&
AliveRequest.RequestUri.Host == uri.Host)
{
AliveRequest.RequestUri = uri;
return(AliveRequest);
}
return(new WebRequestExpress(uri, bKeepAlive));
}
public static string DownloadBySocket(string url, Encoding encodingType)
{
if (Utility.Utility.IsStringNullOrEmpty(url))
{
return(Utility.Utility.InitializeString);
}
Uri uri = new Uri(url);
WebRequestExpress request = null;
request = WebRequestExpress.Create(uri, request, true);
request.Header = request.Method + " " + uri.PathAndQuery + " HTTP/1.0\r\n" + request.Headers;
WebResponseExpress response = request.GetResponse();
if (encodingType == null)
{
encodingType = Encoding.UTF8;
}
response.EncodingType = encodingType;
string strResponse = "";
byte[] RecvBuffer = new byte[10240];
int nBytes, nTotalBytes = 0;
// loop to receive response buffer
while ((nBytes = response.socket.Receive(RecvBuffer, 0, 10240, SocketFlags.None)) > 0)
{
nTotalBytes += nBytes;
strResponse += encodingType.GetString(RecvBuffer, 0, nBytes);
if (response.KeepAlive && nTotalBytes >= response.ContentLength && response.ContentLength > 0)
{
break;
}
}
return(strResponse);
}