public void RequestBlocks()
{
#if VERBOSE
CKernel.LogClient.AddLog("RequestBlocks,download blocks.count:"+Convert.ToString(m_DownloadBlocks.Count),m_ID);
#endif
if (m_DownloadElement==null)
{
if (DownFileHash!=null)
{
m_DownloadElement=(CElement)CKernel.FilesList[DownFileHash];
if ((m_DownloadElement!=null)&&(m_DownloadElement.SourcesList!=null))
{
m_DownloadElement.SourcesList.AddSource(this);
}
else
{
// probablemente el fichero ya se ha completado
return;
}
}
else
{
return;
}
}
m_DownloadState=Protocol.DownloadState.Downloading;
//CElement Element=(CElement)CKernel.FilesList[CKernel.HashToString(DownFileHash)];
uint start=0;
uint end=0;
int chunk=0;
CFileBlock[] blocks=new CFileBlock[3];
for (uint i=0;i!=3;i++)
{
blocks[i]=new CFileBlock();
//Debug.Write("LastChunk:"+m_LastChunkRequested.ToString());
chunk=m_DownloadElement.SourcesList.SelectChunk(m_DownFileChunks,m_LastChunkRequested);
m_LastChunkRequested=chunk;
//Debug.WriteLine("NewChunk:"+m_LastChunkRequested.ToString());
if (chunk>=0)
{
if (m_DownloadElement.File.GetNewBlockInChunk((uint)chunk,ref start,ref end))
{
blocks[i].start=start;
blocks[i].end=end;
blocks[i].FileHash=DownFileHash;
blocks[i].position=start;
//blocks[i].buffer=new Byte[fin+1-inicio];
m_DownloadBlocks.Add(blocks[i]);
if ((end==0)&&(start==0))
{
Debug.WriteLine("no more blocks to request "+Convert.ToString(chunk));
}
else
{
//Debug.WriteLine(m_UserName+", ChunksStatus = "+Convert.ToString(m_DownloadElement.File.ChunksStatus[0])/*+Convert.ToString(m_DownloadElement.File.GetChunksStatus()[1])*/);
#if VERBOSE
CKernel.LogClient.AddLog("RequestBlocks-chunk requested "+Convert.ToString(chunk)+" block: "+Convert.ToString(start)+"-"+Convert.ToString(end)+"\n",m_ID);
#endif
}
}
}
}
if ((blocks[0].start==0)&&(blocks[0].end==0))
{
#if VERBOSE
CKernel.LogClient.AddLog("RequestBlocks-first block is null,no request blocks",m_ID);
#endif
#if DEBUG
Debug.WriteLine(m_UserName+" Parte: "+Convert.ToString(chunk)+" first block is null,no request blocks");
for (int j=0;j<m_DownloadElement.File.ChunksStatus.Length;j++)
{
if (((m_DownloadElement.File.ChunksStatus[j]==(byte)Protocol.ChunkState.Empty)||
(m_DownloadElement.File.ChunksStatus[j]==(byte)Protocol.ChunkState.InProgress))&&
(m_DownFileChunks[j]==(byte)Protocol.ChunkState.Complete))
Debug.WriteLine("Chunk not selected when available");
}
#endif
if (m_DownloadBlocks.Count==0)
{
//no needed new blocks to download and nothing pending for receiving
bool willBeChangedToOtherFile=((m_OtherDownFiles!=null)&&(m_OtherDownFiles.Count>0));
CancelDownloadTransfer(false);
if (!willBeChangedToOtherFile)
{
m_DownloadState=Protocol.DownloadState.NoNeededParts;
}
}
}
else
{
MemoryStream packet=new MemoryStream();
CFileBlockRequest fileBlockRequest=new CFileBlockRequest(packet,DownFileHash,ref blocks[0],ref blocks[1],ref blocks[2]);
if (connection!=null)
{
connection.SendPacket(packet);
}
}
}
public void ProcessRequestParts(byte[] packet)
{
#if VERBOSE
CKernel.LogClient.AddLog("ProcessRequestParts",m_ID);
#endif
if (m_UploadState!=Protocol.UploadState.Uploading) return;
CFileBlockRequest BlockRequest=new CFileBlockRequest(new MemoryStream(packet));
foreach (CFileBlock block in BlockRequest.RequestedBlocks)
{
m_UploadBlocks.Add(block);
}
}