/// <summary>
/// Return an HttpWebResponse object for a request. You can use the Response to
/// read the result as needed. This is a low level method. Most of the other 'Get'
/// methods call this method and process the results further.
/// </summary>
/// <remarks>Important: The Response object's Close() method must be called when you are done with the object.</remarks>
/// <param name="url">Url to retrieve.</param>
/// <returns>An HttpWebResponse Object</returns>
public HttpWebResponse DownloadResponse(string url)
{
Cancelled = false;
//try
//{
_Error = false;
_ErrorMessage = string.Empty;
_Cancelled = false;
if (WebRequest == null)
{
WebRequest = (HttpWebRequest)System.Net.WebRequest.Create(url);
WebRequest.Headers.Add("Cache", "no-cache");
}
WebRequest.UserAgent = _UserAgent;
WebRequest.Timeout = _timeout * 1000;
WebRequest.ReadWriteTimeout = _timeout * 1000;
// Handle Security for the request
if (_Username.Length > 0)
{
if (_Username == "AUTOLOGIN" || _Username == "AutoLogin")
{
WebRequest.Credentials = CredentialCache.DefaultCredentials;
}
else
{
WebRequest.Credentials = new NetworkCredential(_Username, _Password);
}
}
// Handle Proxy Server configuration
if (_ProxyAddress.Length > 0)
{
if (_ProxyAddress == "DEFAULTPROXY")
{
WebRequest.Proxy = HttpWebRequest.DefaultWebProxy;
}
else
{
WebProxy Proxy = new WebProxy(_ProxyAddress, true);
if (_ProxyBypass.Length > 0)
{
Proxy.BypassList = _ProxyBypass.Split(';');
}
if (_ProxyUsername.Length > 0)
{
Proxy.Credentials = new NetworkCredential(_ProxyUsername, _ProxyPassword);
}
WebRequest.Proxy = Proxy;
}
}
if (UseGZip)
{
WebRequest.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");
}
// Handle cookies - automatically re-assign
if (_HandleCookies || (_Cookies != null && _Cookies.Count > 0))
{
WebRequest.CookieContainer = new CookieContainer();
if (_Cookies != null && _Cookies.Count > 0)
{
WebRequest.CookieContainer.Add(_Cookies);
}
}
HttpTimings.StartRequest();
// Deal with the POST buffer if any
if (_PostData != null)
{
if (WebRequest.Method == "GET")
{
WebRequest.Method = "POST";
}
switch (_PostMode)
{
case HttpPostMode.UrlEncoded:
WebRequest.ContentType = "application/x-www-form-urlencoded";
break;
case HttpPostMode.MultiPart:
WebRequest.ContentType = "multipart/form-data; boundary=" + _MultiPartBoundary;
_PostData.Write(Encoding.GetEncoding(1252).GetBytes("--" + _MultiPartBoundary + "--\r\n"));
break;
case HttpPostMode.Xml:
WebRequest.ContentType = "text/xml";
break;
case HttpPostMode.Json:
WebRequest.ContentType = "application/json";
break;
case HttpPostMode.Raw:
//WebRequest.ContentType = "application/octet-stream";
break;
default:
goto case HttpPostMode.UrlEncoded;
}
if (!string.IsNullOrEmpty(ContentType))
{
WebRequest.ContentType = ContentType;
}
Stream requestStream = WebRequest.GetRequestStream();
if (SendData == null)
{
_PostStream.WriteTo(requestStream); // Simplest version - no events
}
else
{
StreamPostBuffer(requestStream); // Send in chunks and fire events
}
//*** Close the memory stream
_PostStream.Close();
_PostStream = null;
//*** Close the Binary Writer
if (_PostData != null)
{
_PostData.Close();
_PostData = null;
}
//*** Close Request Stream
requestStream.Close();
// clear out the Post buffer
ResetPostData();
// If user cancelled the 'upload' exit
if (Cancelled)
{
ErrorMessage = "HTTP Request was cancelled.";
Error = true;
return(null);
}
}
// Retrieve the response headers
HttpWebResponse Response = null;
try
{
Response = (HttpWebResponse)WebRequest.GetResponse();
}
catch (WebException ex)
{
// Check for 500 error return - if so we still want to return a response
// Client can check oHttp.WebResponse.StatusCode
if (ex.Status == WebExceptionStatus.ProtocolError)
{
Response = (HttpWebResponse)ex.Response;
}
else
{
throw;
}
}
_WebResponse = Response;
// Close out the request - it cannot be reused
WebRequest = null;
// ** Save cookies the server sends
if (_HandleCookies)
{
if (Response.Cookies.Count > 0)
{
if (_Cookies == null)
{
_Cookies = Response.Cookies;
}
else
{
// ** If we already have cookies update the list
foreach (Cookie oRespCookie in Response.Cookies)
{
bool bMatch = false;
foreach (Cookie oReqCookie in _Cookies)
{
if (oReqCookie.Name == oRespCookie.Name)
{
oReqCookie.Value = oRespCookie.Value;
bMatch = true;
break; //
}
} // for each ReqCookies
if (!bMatch)
{
_Cookies.Add(oRespCookie);
}
}
}
}
}
return(Response);
}
/// <summary>
/// The HttpClient Default Constructor
/// </summary>
public HttpClient()
{
HttpTimings = new HttpTimings();
}
/// <summary>
/// The HttpClient Default Constructor
/// </summary>
public HttpClient()
{
HttpTimings = new HttpTimings();
}
