// This method is used to process the accept socket connection
private void ProcessAccept(SocketAsyncEventArgs AsyncEventArgs)
{
// First we get the accept socket from the passed in arguments
Socket acceptsocket = AsyncEventArgs.AcceptSocket;
// If the accept socket is connected to a client we will process it
// otherwise nothing happens
if (acceptsocket.Connected)
{
try
{
// Go get a read socket out of the read socket stack
SocketAsyncEventArgs readsocket = _socketPool.Pop();
// If we get a socket, use it, otherwise all the sockets in the stack are used up
// and we can't accept anymore connections until one frees up
if (readsocket != null)
{
P2PPortClientHandler newClientHandler;
try
{
newClientHandler = new P2PPortClientHandler(acceptsocket, readsocket);
// Start a receive request and immediately check to see if the receive is already complete
// Otherwise OnIOCompleted will get called when the receive is complete
bool IOPending = acceptsocket.ReceiveAsync(newClientHandler.readSocket);
if (!IOPending)
{
ProcessReceive(readsocket);
}
//raises the event that a clien has conencted
this._ConnectedClientsTable.Add(newClientHandler.clientID, newClientHandler);
if (NewClientConnectionEvent != null)
{
NewClientConnectionEvent(newClientHandler.clientID);
}
}
catch (Exception ex)
{
}
}
else
{
acceptsocket.Close();
var ex = new Exception("Client connection refused because the maximum number of client connections (" + Convert.ToString(P2PNetworkingDefinitions.DEFAULT_MAX_CONNECTIONS) + ") allowed on the server has been reached.");
throw ex;
}
}
catch (Exception ex)
{
exceptionthrown = true;
}
// Start the process again to wait for the next connection
StartAcceptAsync(AsyncEventArgs);
}
}
private void _incommingDataProcessingQueue_NewItemDetected(object Item)
{
try
{
if (Item != null)
{
P2PPortClientHandler clientHandler = (P2PPortClientHandler)Item;
ProcessReceivedData(clientHandler);
}
}
catch
{
}
}
private void CloseAndFinishAllClientConnectionsOnPortDisposing()
{
IEnumerator enumm = default(IEnumerator);
P2PPortClientHandler _P2PPortClientHandler = default(P2PPortClientHandler);
Hashtable copyOFClientConnectedTable = default(Hashtable);
copyOFClientConnectedTable = (Hashtable)(this._ConnectedClientsTable.Clone());
enumm = copyOFClientConnectedTable.GetEnumerator();
while (enumm.MoveNext())
{
_P2PPortClientHandler = (P2PPortClientHandler)(((DictionaryEntry)enumm.Current).Value);
try
{
_P2PPortClientHandler.handlerSocket.Close();
}
catch (Exception)
{
}
}
this._ConnectedClientsTable.Clear();
}
private void CloseAndFinishClientConnection(P2PPortClientHandler clientHandler)
{
P2PPortClientHandler currentClientHandler = default(P2PPortClientHandler);
currentClientHandler = (P2PPortClientHandler)this._ConnectedClientsTable[clientHandler.clientID];
try
{
if (!(currentClientHandler.handlerSocket == null))
{
currentClientHandler.handlerSocket.Close();
}
}
catch (Exception)
{
}
try
{
this._ConnectedClientsTable.Remove(currentClientHandler.clientID);
}
catch (Exception ex)
{
CustomEventLog.WriteEntry(ex);
}
}
// function that mainly process the received data in the server port
private void ProcessReceivedData(P2PPortClientHandler client)
{
try
{
if (!(client == null))
{
try
{
//*****************************************
//tries to deserialize to a P2PDATA
//*****************************************
P2PData data = P2PData.Deserialize(client.ReceiveDataBuffer);
this.Statistics.LogDataReceptionEvent(data);
try
{
//catches if an exception ocurrs to avoid the programm exist from the reading thread
//because of a failure in the object that implements the interface.
((IUseP2PCommunicationsScheme)this._portOwnerComponent).ReceiveData(data, this.ListeningPortNumber);
Services.P2PCommunicationsScheme.Data.P2PDataDeliveryResult successfulDataDelivery = Services.P2PCommunicationsScheme.Data.P2PDataDeliveryResult.GetSucceedDeliveryResult(data);
client.handlerSocket.Send(successfulDataDelivery.Serialize());
//***************************************************************************************
}
catch (Exception ex)
{
Services.P2PCommunicationsScheme.Data.P2PDataDeliveryResult failureDataDelivery = Services.P2PCommunicationsScheme.Data.P2PDataDeliveryResult.GetFailureDeliveryResult(data, ex.Message);
client.handlerSocket.Send(failureDataDelivery.Serialize());
//***************************************************************************************
}
}
catch (Exception ex)
{
//*****************************************
//tries to deserialize to a P2P_DATA_DELIVERY_RESULT
//*****************************************
P2PDataRequest dataRequest = default(P2PDataRequest);
P2PData dataRequested = default(P2PData);
try
{
dataRequest = P2PDataRequest.Deserialize(client.ReceiveDataBuffer);
try
{
dataRequested = ((IUseP2PCommunicationsScheme)this._portOwnerComponent).RetrieveData(dataRequest, this.ListeningPortNumber);
if (!(dataRequested == null))
{
this.Statistics.LogSuccesfulDataRequestEvent(dataRequest);
client.handlerSocket.Send(dataRequested.Serialize());
//***************************************************************************************
}
else
{
this.Statistics.LogFailedDataRequestEvent(dataRequest);
string portOwnerName = ((IUseP2PCommunicationsScheme)this._portOwnerComponent).P2PPortOwnerName;
if (portOwnerName == null)
{
portOwnerName = "UNKNOWN";
}
string errorMessage = "The remote object \'" + portOwnerName + "\' can\'t handle the requested data named \'" + dataRequest.RequestedDataName + "\'";
P2PDataRequestFailure reqFAilure = P2PDataRequestFailure.GetP2PDataRequestFailure(dataRequest, errorMessage);
client.handlerSocket.Send(reqFAilure.Serialize());
//***************************************************************************************
}
}
catch (Exception ex2)
{
this.Statistics.LogFailedDataRequestEvent(dataRequest);
string portOwnerName = ((IUseP2PCommunicationsScheme)this._portOwnerComponent).P2PPortOwnerName;
if (portOwnerName == null)
{
portOwnerName = "UNKNOWN";
}
string errorMessage = ex2.Message;
P2PDataRequestFailure reqFAilure = P2PDataRequestFailure.GetP2PDataRequestFailure(dataRequest, errorMessage);
client.handlerSocket.Send(reqFAilure.Serialize());
//***************************************************************************************
}
}
catch (Exception)
{
string msg = "";
msg = "Error processing incomming data from P2PPort client : " + ex.ToString();
CustomEventLog.WriteEntry(EventLogEntryType.Error, msg);
}
}
}
}
catch (Exception ex)
{
string msg = "";
msg = "Error processing incomming data from P2PPort client : " + ex.ToString();
CustomEventLog.WriteEntry(EventLogEntryType.Error, msg);
}
}
