private void CreateWebRequests(RequestMessage start, RequestMessage end)
{
// Properly handle the case where we have multiple files
// This is only implemented for single file torrents
var uri = Uri;
if (Uri.OriginalString.EndsWith("/"))
uri = new Uri(uri, Manager.Torrent.Name + "/");
// startOffset and endOffset are *inclusive*. I need to subtract '1' from the end index so that i
// stop at the correct byte when requesting the byte ranges from the server
var startOffset = (long) start.PieceIndex*Manager.Torrent.PieceLength + start.StartOffset;
var endOffset = (long) end.PieceIndex*Manager.Torrent.PieceLength + end.StartOffset + end.RequestLength;
foreach (var file in Manager.Torrent.Files)
{
var u = uri;
if (Manager.Torrent.Files.Length > 1)
u = new Uri(u, file.Path);
if (endOffset == 0)
break;
// We want data from a later file
if (startOffset >= file.Length)
{
startOffset -= file.Length;
endOffset -= file.Length;
}
// We want data from the end of the current file and from the next few files
else if (endOffset >= file.Length)
{
var request = (HttpWebRequest) WebRequest.Create(u);
AddRange(request, startOffset, file.Length - 1);
_webRequests.Enqueue(new KeyValuePair<WebRequest, int>(request, (int) (file.Length - startOffset)));
startOffset = 0;
endOffset -= file.Length;
}
// All the data we want is from within this file
else
{
var request = (HttpWebRequest) WebRequest.Create(u);
AddRange(request, startOffset, endOffset - 1);
_webRequests.Enqueue(new KeyValuePair<WebRequest, int>(request, (int) (endOffset - startOffset)));
endOffset = 0;
}
}
}
public RejectRequestMessage(RequestMessage message)
: this(message.PieceIndex, message.StartOffset, message.RequestLength)
{
}
protected override void HandleRequestMessage(PeerId id, RequestMessage message)
{
base.HandleRequestMessage(id, message);
unchoker.SentBlock(id, message.PieceIndex);
}
public HttpRequestData(RequestMessage request)
{
Request = request;
var m = new PieceMessage(request.PieceIndex, request.StartOffset, request.RequestLength);
TotalToReceive = m.ByteLength;
}