private void m_ProcessUDPPacket(byte command, ref MemoryStream packet)
{
try
{
switch( (Protocol.ClientCommandExtUDP)command )
{
case Protocol.ClientCommandExtUDP.ReaskFilePing:
if (!m_PortIsAccesible)
CLog.Log(Types.Constants.Log.Info,"UDP_PORT_IS_OPEN");
m_PortIsAccesible=true;
MemoryStream responseBuffer;
// if (packet.Length!=16) break;
// byte[] FilaHash=new byte[16];
// packet.Read(FilaHash,0,16);
CFileReaskUDP reaskMessage=new CFileReaskUDP(packet);
byte[] FilaHash=reaskMessage.FileHash;
//byte[] chunksAvaibility=reaskMessage.partes;
//TODO update chunksAvaibility in shared file
CElement requestedElement=CKernel.FilesList[FilaHash];
if (requestedElement==null)
{
responseBuffer=new MemoryStream(2);
CFileNotFoundUDP FicheroNoEncontradoUDP=new CFileNotFoundUDP(responseBuffer);
}
else
{
m_RemoteIPEndPoint=(IPEndPoint)m_RemoteEndPoint;
CClient foundClient=null;
ushort queuePosition=CKernel.Queue.RefreshClientUDP(BitConverter.ToUInt32(m_RemoteIPEndPoint.Address.GetAddressBytes(),0),(ushort)m_RemoteIPEndPoint.Port,ref foundClient);
if (queuePosition<=0)
{
responseBuffer=new MemoryStream(2);
CQueueFullUDP PaqueteColaLlenaUDP=new CQueueFullUDP(responseBuffer);
}
else
{
responseBuffer=new MemoryStream(4);
CQueuePositionUDP PaquetePosicionColaUDP=new CQueuePositionUDP(responseBuffer,queuePosition,requestedElement.File.ChunksStatus,foundClient.VersionUDP);
}
}
SendPacketUDP(responseBuffer.GetBuffer(),m_RemoteIPEndPoint);
break;
case Protocol.ClientCommandExtUDP.ReaskAck:
m_RemoteIPEndPoint=(IPEndPoint)m_RemoteEndPoint;
CClient client=CKernel.ClientsList.GetClient(BitConverter.ToUInt32(m_RemoteIPEndPoint.Address.GetAddressBytes(),0),0,0,null);
if (client!=null)
{
ushort queuePosition;
if ((packet.Length>2)&&(client.VersionUDP>3))
{
packet.Seek(0,SeekOrigin.Begin);
client.ProcessChunksStatus(packet,true);
}
BinaryReader reader=new BinaryReader(packet);
queuePosition=reader.ReadUInt16();
client.ProcessUDPReask(queuePosition);
packet.Close();
packet=null;
}
break;
case Protocol.ClientCommandExtUDP.QueueFull:
client=CKernel.ClientsList.GetClient(BitConverter.ToUInt32(m_RemoteIPEndPoint.Address.GetAddressBytes(),0),0,0,null);
if (client!=null)
{
client.ProcessUDPReask(0);
}
break;
case Protocol.ClientCommandExtUDP.FileNotFound:
client=CKernel.ClientsList.GetClient(BitConverter.ToUInt32(m_RemoteIPEndPoint.Address.GetAddressBytes(),0),0,0,null);
if ((client!=null)&&(client.DownloadElement!=null)&&(client.DownloadElement.SourcesList!=null))
client.DownloadElement.SourcesList.RemoveSource(client);
break;
default:
CLog.Log(Constants.Log.Verbose,"CLI_UNK_UDP_PACKET",command);
break;
}
}
catch(Exception e)
{
Debug.WriteLine(e.ToString());
CLog.Log(Constants.Log.Verbose,"CLI_PAQ_UDP_ERROR",command);
}
}
public void TryUDPDownload()
{
m_AskingUDP=true;
if ((m_EmuleProtocol)&&
(m_VersionUDP>=1)&&
(m_ID>Protocol.LowIDLimit)&&
(m_UDPPort>0)&&
(DownFileHash!=null)&&
((m_QRDownload>50)||(m_QRDownload==0))&&
((!m_SupportsPartner)||(!CKernel.Queue.AllowNewParner()))&&
!m_AllowSourceExchangeRequest())
{
#if VERBOSE
CKernel.LogClient.AddLog("Intentar Descarga UDP");
#endif
MemoryStream buffer=new MemoryStream();
if (m_DownloadElement==null) m_DownloadElement=CKernel.FilesList[DownFileHash];
if (m_DownloadElement==null) return;
CFileReaskUDP PeticionUDP=new CFileReaskUDP(buffer,DownFileHash,m_VersionUDP,m_DownloadElement.File.ChunksStatus);
IPEndPoint hostRemote=new IPEndPoint(m_ID,m_UDPPort);
CKernel.UDPListener.SendPacketUDP(buffer.GetBuffer(),hostRemote);
}
}