/// <summary>
/// Create a new connection object
/// </summary>
/// <param name="connectionInfo">ConnecitonInfo corresponding to the new connection</param>
/// <param name="defaultSendReceiveOptions">The SendReceiveOptions which should be used as connection defaults</param>
protected Connection(ConnectionInfo connectionInfo, SendReceiveOptions defaultSendReceiveOptions)
{
SendTimesMSPerKBCache = new CommsMath();
dataBuffer = new byte[NetworkComms.ReceiveBufferSizeBytes];
packetBuilder = new PacketBuilder();
//Intialise the sequence counter using the global value
//Subsequent values on this connection are guaranteed to be sequential
packetSequenceCounter = Interlocked.Increment(ref NetworkComms.totalPacketSendCount);
ConnectionInfo = connectionInfo;
if (defaultSendReceiveOptions != null)
{
ConnectionDefaultSendReceiveOptions = defaultSendReceiveOptions;
}
else
{
ConnectionDefaultSendReceiveOptions = NetworkComms.DefaultSendReceiveOptions;
}
if (NetworkComms.commsShutdown)
{
throw new ConnectionSetupException("Attempting to create new connection after global comms shutdown has been initiated.");
}
if (ConnectionInfo.ConnectionType == ConnectionType.Undefined || ConnectionInfo.RemoteEndPoint == null)
{
throw new ConnectionSetupException("ConnectionType and RemoteEndPoint must be defined within provided ConnectionInfo.");
}
//If a connection already exists with this info then we can throw an exception here to prevent duplicates
if (NetworkComms.ConnectionExists(connectionInfo.RemoteEndPoint, connectionInfo.ConnectionType))
{
throw new ConnectionSetupException("A connection already exists with " + ConnectionInfo);
}
//We add a reference in the constructor to ensure any duplicate connection problems are picked up here
NetworkComms.AddConnectionByReferenceEndPoint(this);
}
/// <summary>
/// Return the standard deviation of the current list.
/// </summary>
/// <param name="lastNValues">If less than the number of items in the value list returns the mean of the lastNValues</param>
/// <returns>The mean of relevant values</returns>
public double CalculateStdDeviation(int lastNValues)
{
lock (locker)
{
int itemsToSkip = 0;
if (lastNValues < values.Count)
{
itemsToSkip = values.Count - lastNValues;
}
List <double> itemsForCalc = new List <double>(lastNValues);
List <double> itemWeights = new List <double>(lastNValues);
for (int i = itemsToSkip; i < values.Count; ++i)
{
itemsForCalc.Add(values[i]);
itemWeights.Add(weights[i]);
}
return(CommsMath.CalculateStdDeviation(itemsForCalc, itemWeights));
}
}
/// <summary>
/// Return the standard deviation of the current list.
/// </summary>
/// <returns>The standard deviation of all values currently in the list.</returns>
public double CalculateStdDeviation()
{
lock (locker)
return(CommsMath.CalculateStdDeviation(this.values, this.weights));
}