/// <summary>
/// Initializes a new <c>FileDownloadProgress</c> object with the given values.
/// </summary>
/// <param name="state"></param>
/// <param name="bytesDownloaded"></param>
/// <param name="contentLength"></param>
/// <param name="bitsPerSecond"></param>
public FileDownloadProgress(FileDownloadState state, int bytesDownloaded, long contentLength, double bitsPerSecond)
{
State = state;
BytesDownloaded = bytesDownloaded;
ContentLength = contentLength;
BitsPerSecond = bitsPerSecond;
BytesPerSecond = BitsPerSecond / 8;
PercentComplete = 100.0 * ((double)BytesDownloaded / ContentLength);
HumanSpeed = string.Format("{0}/s", FileUtils.HumanFriendlyFileSize((long)BytesPerSecond));
IsComplete = (BytesDownloaded == ContentLength);
}
/// <summary>
/// Initializes a new <c>FileDownloadProgress</c> object with the given values.
/// </summary>
/// <param name="state"></param>
/// <param name="bytesDownloaded"></param>
/// <param name="contentLength"></param>
/// <param name="bitsPerSecond"></param>
public FileDownloadProgress(FileDownloadState state, int bytesDownloaded, long contentLength, double bitsPerSecond)
{
State = state;
BytesDownloaded = bytesDownloaded;
ContentLength = contentLength;
BitsPerSecond = bitsPerSecond;
BytesPerSecond = BitsPerSecond / 8;
PercentComplete = 100.0 * ((double)BytesDownloaded / ContentLength);
HumanSpeed = string.Format("{0}/s", FileUtils.HumanFriendlyFileSize((long)BytesPerSecond));
IsComplete = (BytesDownloaded == ContentLength);
}
/// <summary>
///
/// </summary>
/// <param name="source"></param>
/// <param name="destination"></param>
public void DownloadFileAsync(string source, FileStream destination)
{
var _requestMethod = WebRequestMethod.DownloadFile;
var _resourceName = WebRequestHelpers.ReplacePathDelimiterToUriDelimiter(source);
var _uri = CreateUniformResourceIdentifier(_resourceName);
var _request = CreateRequest(_uri, _requestMethod);
var _length = GetContentLength(_uri);
var _state = new FileDownloadState(_request, BUFFER_SIZE, null, destination, _length);
_request.BeginGetResponse(new AsyncCallback(_BeginGetResponseCallback), _state);
}
/// <summary>
///
/// </summary>
/// <param name="asyncResult"></param>
void _BeginGetResponseCallback(IAsyncResult asyncResult)
{
var _state = asyncResult.AsyncState as FileDownloadState;
try
{
var _response = _state.Request.EndGetResponse(asyncResult);
var _source = _response.GetResponseStream();
var _newState = new FileDownloadState(_state.Request, _state.BufferSize, _source, _state.Destination, _state.ContentLength);
var _callback = new AsyncCallback(_BeginReadSourceCallback);
_newState.Source.BeginRead(_newState.ByteBuffer, 0, _newState.ByteBuffer.Length, _callback, _newState);
}
catch (Exception ex)
{
_state.Dispose();
RaiseDownloadFaultedEvent(ex);
}
}
/// <summary>
///
/// </summary>
/// <param name="source"></param>
/// <param name="destination"></param>
/// <returns></returns>
public IExternalResult DownloadFile(string source, FileStream destination)
{
var _requestMethod = WebRequestMethod.DownloadFile;
var _resourceName = WebRequestHelpers.ReplacePathDelimiterToUriDelimiter(source);
var _uri = CreateUniformResourceIdentifier(_resourceName);
var _request = CreateRequest(_uri, _requestMethod);
var _length = GetContentLength(_uri);
var _response = _request.GetResponse();
var _source = _response.GetResponseStream();
using (var _state = new FileDownloadState(_request, BUFFER_SIZE, _source, destination, _length))
{
while (0 < (_state.BytesDownloaded = _state.Source.Read(_state.ByteBuffer, 0, _state.ByteBuffer.Length)))
{
_state.Destination.Write(_state.ByteBuffer, 0, _state.BytesDownloaded);
}
return(GetRequestResult(_response, _requestMethod));
}
}
