public CSourceOld(CClient client)
{
FileHash=client.DownFileHash;
UserHash=client.UserHash;
FileChunks=client.DownFileChunks;
DeletedTime=DateTime.Now;
}
public bool AddSource(CClient source)
{
bool notMaxSources;
notMaxSources=((m_ArrayList.Count<CKernel.Preferences.GetInt("MaxSourcesPerFile"))||
(RemoveNoNeededSource()));
if ((notMaxSources)
&&(!m_ArrayList.Contains(source))
&&((source.UserID!=CKernel.Preferences.GetUInt("ID"))
||(source.Port!=CKernel.Preferences.GetUShort("TCPPort"))))
{
//this is an additional check to avoid duplicated sources
//is it really needed, does it solve the problem at 100% ?
CClient existingSource=CKernel.GetClient(m_ArrayList,source.UserID,source.Port,source.ServerIP,source.UserHash);
if (existingSource!=null)
{
#if DEBUG
//CLog.Log(Types.Constants.Log.Verbose,"Duplicated source detected: "+ source.UserName + "-" + source.UserID.ToString() + "-" + m_ArrayList.Contains(source).ToString());
#endif
//attach the client to the existing one
source=existingSource;
return false;
}
//
m_ArrayList.Add(source);
CKernel.NewSource(source, CKernel.HashToString(source.DownFileHash));
return true;
}
else CKernel.ClientsList.IsClientNeeded(source);
return false;
}
public void IsClientNeeded(CClient client)
{
if ((client.DownFileHash==null)
||((client.DownFileHash!=null)&&((CKernel.FilesList[client.DownFileHash]==null))
||((client.DownFileHash!=null)&&(CKernel.FilesList[client.DownFileHash].SourcesList==null))
||((client.DownFileHash!=null)&&(CKernel.FilesList[client.DownFileHash].SourcesList!=null)
&&(!CKernel.FilesList[client.DownFileHash].SourcesList.Contains(client)))))
{
if ((!client.DownloadVariousFiles)
&&(!CKernel.Queue.ContainsClient(client))
&&((client.connection==null)||(!client.connection.Connected)))
{
#if VERBOSE
CKernel.LogClient.AddLog("Client not needed",client.UserID);
#endif
if (!client.IsFriend)
{
//Debug.WriteLine(m_List.Count.ToString()+" Client not needed");
m_List.Remove(client);
}
}
}
}
public CClient AddClient(uint IP,ushort port,uint ServerIP,byte[] HashClient,ushort ServerPort,byte[] FileHashDescarga, Constants.FriendLevel friendLevel)
{
CClient client=GetClient(IP,port,ServerIP,HashClient);
if (client==null)
{
client=new CClient(port,IP,ServerIP,ServerPort,FileHashDescarga);
client.FriendStatus=friendLevel;
if (m_LastConnection<DateTime.Now-new TimeSpan(0,Protocol.MinClientReask,0))
{
m_LastConnection=DateTime.Now-new TimeSpan(0,0,Protocol.MinClientReask-1,59,700);
client.LastDownloadRequest=DateTime.Now-new TimeSpan(0,Protocol.MinClientReask,0);
}
else
{
m_LastConnection += new TimeSpan(0,0,0,0,300);
client.LastDownloadRequest=m_LastConnection;
}
m_List.Add(client);
}
else
{
if (!client.IsFriend) client.FriendStatus=friendLevel;
else
{
CKernel.FriendsList.Add(IP,port,ServerIP,HashClient,ServerPort,"",client.UserName,client.Software,client.Version);
}
};
return client;
}
public void AddClientToFile(CClient client,byte[] FileHash)
{
if (client.DownFileHash==null)
{
client.DownFileHash=FileHash;
CKernel.FilesList.AddSource(FileHash,ref client);
}
else
{
if (CKernel.SameHash(ref FileHash,ref client.DownFileHash))
{
CKernel.FilesList.AddSource(FileHash,ref client);
}
else
{
client.AddOtherDownloadFile(CKernel.HashToString(FileHash));
}
}
}
/// <summary>
/// Create a new connection.
/// </summary>
/// <param name="nIP">IP</param>
/// <param name="Port">Port</param>
/// <param name="in_client">Client</param>
internal CConnection(uint nIP,int Port,CClient in_client)
{
CreateConnection(nIP,Port,in_client);
}
/* public CClient GetClient(uint ID,ushort port,uint serverIP,byte[] ClientHash)
{
CClient resClient=null;
byte[] HashComp;
bool isSame;
lock (m_List.SyncRoot)
{
foreach (CClient Client in m_List)
{
HashComp=Client.UserHash;
if ((ClientHash!=null)&&(HashComp!=null))
{
isSame=true;
for (int i=0;i!=16;i++)
{
if (HashComp[i]!=ClientHash[i])
{
isSame=false;
break;
}
}
if (isSame)
{
resClient=Client;
break;
}
else
{
continue;
}
}
if (ID>Protocol.LowIDLimit)
{
if (port>0)
{
if ((Client.UserID==ID)&&(Client.Port==port))
{
resClient=Client;
break;
}
}
else
{
if (Client.UserID==ID)
{
resClient=Client;
break;
}
}
}
else
{
if ((Client.UserID==ID)&&(Client.Port==port)&&(Client.ServerIP==serverIP))
{
resClient=Client;
break;
}
}
}
}
return resClient;
}
*/
public bool AddClient(CClient Client)
{
CClient ClientBuscado=GetClient(Client.UserID,Client.Port,Client.ServerIP,Client.UserHash);
if (ClientBuscado==null)
{
m_List.Add(Client);
return true;
}
else
{
return false;
}
}
internal static void NewUpload(CClient client)
{
InterfaceClient interfaceClient=InterfaceGateway[0].ClientToInterfaceClient(client);
for (int i=0; i<=InterfaceGateway.Length-1; i++)
{
if (CKernel.InterfaceGateway[i]!=null)
{
InterfaceGateway[i].NewUpload(interfaceClient);
}
}
}
/// <summary>
/// Process incomming eDonkey packet.
/// </summary>
/// <param name="packet">Packet which need to be processed.</param>
protected virtual void ProcessDonkeyPacket(ref byte[] packet)
{
try
{
switch ((Protocol.ClientCommand)m_DonkeyHeader.Command)
{
case Protocol.ClientCommand.Hello:
if (m_Client==null)
{
CReceiveHello HelloPacket=new CReceiveHello(false,new MemoryStream(packet));
m_Client=CKernel.ClientsList.GetClient(HelloPacket.UserID,HelloPacket.UserPort,HelloPacket.ServerIP,HelloPacket.Hash);
if (m_Client==null)
{
m_Client=new CClient(this);
CKernel.ClientsList.AddClient(m_Client);
}
else
{
if ((m_Client.connection!=null)&&(m_Client.connection.Connected)&&(m_Client.connection!=this))
{
m_Client.connection.CloseConnection();
Debug.WriteLine("Client conexion!=null");
}
m_Client.connection=this;
}
}
CClient cant=m_Client;
CConnection conant=m_Client.connection;
bool NeedExtendRequest=!m_Client.ProcessHello(false,packet);
if ((NeedExtendRequest)&&(m_Client.EmuleProtocol)&&(CKernel.Preferences.GetBool("UseEmuleProtocol"))) m_Client.SendEmuleHello(false);
m_Client.ResponseHello();
break;
case Protocol.ClientCommand.FileRequest:
m_Client.ProcessFileRequest(packet);
break;
case Protocol.ClientCommand.HelloAnswer:
m_Client.ProcessHello(true,packet);
break;
case Protocol.ClientCommand.SetRequestFileID:
m_Client.ProcessRequestFileID(packet);
break;
case Protocol.ClientCommand.FileRequestAnswer:
m_Client.ProcessFileInfo(packet);
break;
case Protocol.ClientCommand.FileState:
m_Client.ProcessChunksStatus(packet,false/*tcp*/);
break;
case Protocol.ClientCommand.HashSetAnswer:
m_Client.ProcessHashSet(packet);
break;
case Protocol.ClientCommand.HashSetRequest:
m_Client.SendHashSet();
break;
case Protocol.ClientCommand.AcceptUploadRequest:
if (m_Client.DownloadState==Protocol.DownloadState.OnQueue)
{
m_Client.RequestBlocks();
}
else
{
if (m_Client.DownFileHash!=null)
{
// CLog.Log(Constants.Log.Verbose,"Trying to resume download {2}: {0},hashdescarga=null? {1}",m_Client.DownloadState,(m_Client.DownFileHash==null),m_Client.UserName);
m_Client.RequestBlocks();
}
else
{
if (m_Client.UpFileHash!=null)
{
#if DEBUG
CLog.Log(Constants.Log.Verbose,"Recovering source to download "+m_Client.UserName);
#endif
m_Client.DownFileHash=m_Client.UpFileHash;
m_Client.RequestBlocks();
}
else
{
CSourceOld sourceRecovered=CKernel.SourcesOld.GetSourceOld(m_Client.UserHash);
if (sourceRecovered!=null)
{
m_Client.DownFileHash=sourceRecovered.FileHash;
m_Client.DownFileChunks=sourceRecovered.FileChunks;
m_Client.RequestBlocks();
#if DEBUG
CLog.Log(Constants.Log.Verbose,"RECOVERED SOURCE from sources cache "+m_Client.UserName);
#endif
}
#if DEBUG
else
CLog.Log(Constants.Log.Verbose,"download lost: {0}",m_Client.UserName);
#endif
}
}
}
break;
case Protocol.ClientCommand.OutOfPartRequest:
m_Client.ProcessOutOfParts();
break;
case Protocol.ClientCommand.StartUploadRequest:
m_Client.ProcessStartUploadRequest(packet);
break;
case Protocol.ClientCommand.RequestParts:
m_Client.ProcessRequestParts(packet);
break;
case Protocol.ClientCommand.EndOfDownload:
case Protocol.ClientCommand.CancelTransfer:
m_Client.CancelUploadTransfer(false);
break;
case Protocol.ClientCommand.SendingPart:
m_Client.ReceiveBlock(packet);
break;
case Protocol.ClientCommand.QueueRank:
m_Client.ProcessQR(packet);
break;
case Protocol.ClientCommand.FileRequestAnswerNoFile:
m_Client.FileNotFound(packet);
break;
case Protocol.ClientCommand.ChangeClientID:
m_Client.ProcessIDChange(packet);
break;
case Protocol.ClientCommand.ChangeSlot:
break;
case Protocol.ClientCommand.AskSharedFiles:
Constants.AllowViewShared allow=(Constants.AllowViewShared)CKernel.Preferences.GetEnum("AllowViewShared",Constants.AllowViewShared.Nobody);
if (allow==Constants.AllowViewShared.All)
{
m_Client.ProcessSharedListRequest();
}
break;
case Protocol.ClientCommand.AskSharedFilesAnswer:
m_Client.ProcessSharedListResponse(packet);
break;
case Protocol.ClientCommand.Message:
m_Client.ProcessChatMessage(packet);
break;
default:
CLog.Log(Constants.Log.Verbose,"CLI_UNK_DONK_TCP_PACKET",m_DonkeyHeader.Command);
break;
}
}
catch (Exception e)
{
Debug.WriteLine(e.ToString());
#if DEBUG
if (m_DonkeyHeader!=null) CLog.Log(Constants.Log.Verbose,"CLI_PAQ_DONK_ERROR",m_DonkeyHeader.Command);
#endif
}
packet=null;
return;
}
public void RemoveClient(CClient client)
{
if (client.UploadElement!=null) client.UploadElement.Statistics.RemoveUploadChunksAvaibility(client.UpFileChunks);
m_QueueList.Remove(client);
}
public void RemoveUpload(CClient Client, bool enqueue)
{
if (!UploadList.Contains(Client)) return;
if ((enqueue)&&((float)CKernel.Queue.UploadList.Count-1>=m_GetNumberOfSlots()))
{
// si no hay nadie en la cola yo no lo he tirado así que se ha salido de transferencias por que
// ha desconectado,si no hay más gente en la cola que slots no lo metemos para prevenir un bucle
Client.QueueInTime=DateTime.Now;
UploadList.Remove(Client);
AddClient(Client);
Client.UploadState=Protocol.UploadState.OnQueue;
if ((Client.IsPartner)&&(m_Partners>0)) m_Partners--;
Debug.WriteLine("Client "+Client.UserName+" moved to queue");
}
else
{
UploadList.Remove(Client);
if (Client.UploadElement!=null) Client.UploadElement.Statistics.RemoveUploadChunksAvaibility(Client.UpFileChunks);
if ((Client.IsPartner)&&(m_Partners>0)) m_Partners--;
Client.UploadState=Protocol.UploadState.None;
Debug.WriteLine("Client "+Client.UserName+" removed from transfer");
}
}
public bool ContainsClient(CClient cliente)
{
return ((m_QueueList.Contains(cliente))||(UploadList.Contains(cliente)));
}
public ushort RefreshClientUDP(uint IP,ushort UDPPort, ref CClient foundClient)
{
foundClient=null;
lock (m_QueueList.SyncRoot)
{
foreach (CClient client in m_QueueList)
{
if ((client.UserID==IP)&&(client.UDPPort==UDPPort))
{
foundClient=client;
break;
}
}
}
if (foundClient!=null)
{
foundClient.IncUploadRequests();
foundClient.LastUploadRequest=DateTime.Now;
return m_GetQueuePosition(foundClient);
}
else
{
foundClient=CKernel.ClientsList.GetClient(IP,UDPPort);
if (foundClient!=null)
{
if (foundClient.UpFileHash!=null)
return AddClient(foundClient);
else
return 0;
}
else
return 0;
}
}
public void AddPartner(CClient client)
{
if (!AllowNewParner()) return;
//select a client and kick to allow slot for a partner
m_AddingPartner=true;
CClient kickClient;
if ((UploadList.Count>=this.m_GetNumberOfSlots()))
{
for (int i=0; i<UploadList.Count; i++)
{
kickClient=(CClient)UploadList[i];
if (!kickClient.IsPartner)
{
kickClient.CancelUploadTransfer(true);
CLog.Log(Constants.Log.Verbose,"kicked "+kickClient.UserName+" to allow new partner");
break;
}
}
}
if (client!=null)
{
client.IsPartner=true;
m_Partners++;
client.StartUpload();
m_LastAcceptedClientTime=DateTime.Now;
UploadList.Add(client);
m_QueueList.Remove(client);
CKernel.NewUpload(client);
}
m_AddingPartner=false;
}
public ushort AddClient(CClient Client)
{
Client.IncUploadRequests();
if (m_QueueList.Contains(Client))
{
TimeSpan diff=DateTime.Now-Client.LastUploadRequest;
if ((diff<new TimeSpan(0,Protocol.MinClientReask-11,0))&&
(diff>new TimeSpan(0,3,0)))
{
RemoveClient(Client);
Debug.WriteLine("Client kicked from queue, fast reask "+Client.UserName+" "+Client.Software+" "+diff.TotalMinutes);
CKernel.ClientsList.IsClientNeeded(Client);
return 0;
}
else
{
Client.LastUploadRequest=DateTime.Now;
return m_GetQueuePosition(Client);
}
}
Client.LastUploadRequest=DateTime.Now;
if (UploadList.Contains(Client))
return 1;
//is a new client
int queueLength=CKernel.Preferences.GetInt("QueueLength");
int queuedForRequestedFile=0;
if (Client.UploadElement!=null)
queuedForRequestedFile=Client.UploadElement.Statistics.QueuedClients;
if ((m_QueueList.Count>=queueLength)&&
(!Client.IsFriend)&&
((queuedForRequestedFile>0)||((queuedForRequestedFile==0)&&(m_QueueList.Count>=queueLength+15))))
{
if ((Client.UploadElement==null)||
(Client.UploadElement.File==null)||
(Client.UploadElement.File.UpPriority!=Constants.Priority.VeryHigh)||
(m_QueueList.Count>=queueLength+50))
if (Client.SoftwareID==(uint)Protocol.Client.Hathi)
return (ushort)m_QueueList.Count;
else
return 0;
}
//there is room in queue or is a very high priority file and we can use additional 50 queue positions
//or is the first client requesting a file
#if DEBUG
if (queuedForRequestedFile==0)
CLog.Log(Constants.Log.Verbose,"Added to queue "+ m_QueueList.Count.ToString()+" "+Client.UserName +" for rare file "+Client.UploadElement.File.FileName);
#endif
m_QueueList.Add(Client);
if (Client.UploadElement!=null) Client.UploadElement.Statistics.AddUploadChunksAvaibility(Client.UpFileChunks);
Client.QueueInTime=DateTime.Now;
return m_GetQueuePosition(Client);
}
/// <summary>
/// Create a new connection.
/// </summary>
/// <param name="nIP">IP</param>
/// <param name="Port">Port</param>
/// <param name="in_client">Client</param>
private void CreateConnection(uint nIP,int Port,CClient in_client)
{
m_ReceptionStream=new MemoryStream();
m_StreamPosition=0;
m_ntimeOuts=0;
m_HeaderPending=true;
m_DownLimit=(int)(CKernel.Preferences.GetFloat("MaxDownloadRate")*1024F*0.20F);
m_SendPacketList=new ArrayList();
// m_TimerTimeout=new Timer(new TimerCallback(OnTimeOut),null,Timeout.Infinite,Timeout.Infinite);
m_socket=new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
m_socket.Blocking=false;
//m_socket.SetSocketOption(SocketOptionLevel.Socket,SocketOptionName.SendBuffer,1500);
IPAddress DireccionIP=new IPAddress(nIP);
m_EPremote=new IPEndPoint(DireccionIP,Port);
if (in_client!=null)
{
m_Client=in_client;
}
}
internal static void NewChatMessage(CClient client,string message)
{
for (int i=0; i<= InterfaceGateway.Length-1; i++)
{
if (CKernel.InterfaceGateway[i]!=null)
{
InterfaceGateway[i].SubmitOnNewChatMessage(client, message);
}
}
}
public bool AddClient(CClient client)
{
if (client.DownFileChunks==null) return false;
CSourceOld source=GetSourceOld(client.UserHash);
if (source==null)
{
CSourceOld sourceOld=new CSourceOld(client);
m_ArrayList.Add(sourceOld);
return true;
}
else
source.DeletedTime=DateTime.Now;
return false;
}
internal static void NewSource(CClient client, string strDownFileHash)
{
InterfaceClient interfaceClient=InterfaceGateway[0].ClientToInterfaceClient(client);
for (int i=0; i<=InterfaceGateway.Length-1; i++)
{
if (CKernel.InterfaceGateway[i]!=null)
{
InterfaceGateway[i].NewSource(interfaceClient,strDownFileHash);
}
}
}
public void RemoveSource(CClient Client)
{
if (m_ArrayList.Contains(Client))
{
RemoveChunksAvaibility(Client.DownFileChunks);
m_ArrayList.Remove(Client);
Client.RemoveDownload();
Client.SwapToOtherFile();
}
CKernel.ClientsList.IsClientNeeded(Client);
}
private double GetClientRating(CClient client)
{
double priority=1F;
double credit=1F;
TimeSpan timeInQueue=DateTime.Now-client.QueueInTime;
if ((client.UploadElement!=null)&&(client.UploadElement.File!=null))
{
switch (client.UploadElement.File.UpPriority)
{
case Constants.Priority.VeryLow:
priority=1;
break;
case Constants.Priority.Low:
priority=3;
break;
case Constants.Priority.Normal:
priority=8;
break;
case Constants.Priority.High:
priority=18;
break;
case Constants.Priority.VeryHigh:
priority=37;
break;
}
}
//instant credit
if ((client.DownloadState==Protocol.DownloadState.Downloading))
{
credit=1F+client.DownloadSpeed*20F;
}
// friend bonus
if (client.IsFriend)
{
credit=5.0F;
}
// emule credits systems benefit sources to us by probabilities due to the credit system,we emulate it with a littel benefit to get similar downloads speeds
if ((credit==1F)&&(client.DownFileHash!=null)&&(client.DownloadState!=Protocol.DownloadState.NoNeededParts))
{
if ((client.QRDownload<100)&&(client.QRDownload>0))
{
credit=3.5F;
}
else
{
credit=2.5F;
}
}
return timeInQueue.TotalSeconds*priority*credit;
}
/// <summary>
/// Close connection.
/// </summary>
public void CloseConnection()
{
m_ntimeOuts=0;
// if (m_TimerTimeout!=null)
// {
// m_TimerTimeout.Dispose();
// m_TimerTimeout=null;
// }
m_SendPacketList.Clear();
m_SendPacket=null;
m_ReceptionPacket=null;
CloseSocket();
CKernel.ConnectionsList.Remove(this);
m_Client=null;
#if VERBOSE
if (m_Client!=null) CKernel.LogClient.AddLog("closedConnection",m_Client.UserID);
#endif
}
public bool Contains(CClient client)
{
return m_ArrayList.Contains(client);
}
private ushort m_GetQueuePosition(CClient Client)
{
if (!m_QueueList.Contains(Client)) return 0;
ushort position=1;
double rating=GetClientRating(Client);
foreach (CClient compareClient in m_QueueList)
{
if (compareClient==Client) continue;
if (GetClientRating(compareClient)<rating)
{
position++;
}
}
return position;
}
public void AddSource(byte[] FileHash,ref CClient client)
{
CElement Element=(CElement)this[FileHash];
if ((Element!=null)&& (Element!=null)&&(!Element.File.Completed)) Element.SourcesList.AddSource(client);
}
/// <summary>
/// Create a new connection.
/// </summary>
/// <param name="strIP">IP</param>
/// <param name="Port">Port</param>
/// <param name="in_client">Client</param>
internal CConnection(string strIP,int Port,CClient in_client)
{
IPAddress DirectionIP=IPAddress.Parse(strIP);
CreateConnection(BitConverter.ToUInt32(DirectionIP.GetAddressBytes(),0),Port,in_client);
}
