public UDPHub(UDP UDP, UDPHubSettings Settings)
{
this._Settings = Settings;
this._Peers = new Dictionary<IPEndPoint, UDPPeer>();
this._ConnectionRequests = new Dictionary<IPEndPoint, _ConnectionRequest>();
this._UDP = UDP;
UDP.Received += new UDP.ReceiveRawPacketHandler(this._Receive);
}
/// <summary>
/// Called when an (unvalidated) packet is received for this peer.
/// </summary>
internal void _Receive(UDPHubSettings Settings, UDPHub Hub, Packet Packet, out bool Remove)
{
Remove = false;
// Validate
if (!this._Valid(Packet.SequenceNumber))
return;
// Disconnect?
if (Packet.Disconnect)
{
Remove = true;
return;
}
// Reset expire delay
this._ExpireDelay = Settings.ExpireDelay;
// Read additional information
int ack;
if (Packet.AcknowledgementNumber.TryGetValue(out ack))
{
this._OutTerminal.AcknowledgementNumber = ack;
}
double rtt;
if (Packet.RoundTripTime.TryGetValue(out rtt))
{
this._RoundTripTime = rtt;
}
// Chunk?
if (Packet.ChunkData != null)
{
this._Process(Packet.SequenceNumber, Packet.ChunkData, Packet.ChunkInitial, Packet.ChunkFinal);
}
// Ping?
if (Packet.PingRequest)
{
this._SendPingResponse(Hub);
}
}
/// <summary>
/// Initializes a peer with the local machine being the server of the connection.
/// </summary>
internal static UDPPeer _InitializeServer(
UDPHubSettings Settings, IPEndPoint EndPoint,
int SequenceNumber, int AcknowledgementNumber)
{
return new UDPPeer(Settings, EndPoint, SequenceNumber, AcknowledgementNumber)
{
_RoundTripTime = Settings.InitialRoundTripTime,
_KeepAliveDelay = Settings.KeepAliveDelay,
_ExpireDelay = Settings.InitialExpireDelay,
_WaveDelay = 0.0,
_WaveSize = Settings.InitialWaveSize
};
}
/// <summary>
/// Initializes a peer with the local machine being the client (initiator) of the connection.
/// </summary>
/// <param name="Time">The time it took to respond to the connection request.</param>
internal static UDPPeer _InitializeClient(
UDPHubSettings Settings, IPEndPoint EndPoint,
int SequenceNumber, int AcknowledgementNumber,
double Time)
{
return new UDPPeer(Settings, EndPoint, SequenceNumber, AcknowledgementNumber)
{
_RoundTripTime = Time,
_KeepAliveDelay = 0.0,
_ExpireDelay = Settings.ExpireDelay,
_WaveDelay = 0.0,
_WaveSize = Settings.InitialWaveSize,
_ShouldSendRoundTripTime = true
};
}
internal UDPPeer(UDPHubSettings Settings, IPEndPoint EndPoint, int SequenceNumber, int AcknowledgementNumber)
{
this._Settings = Settings;
this._EndPoint = EndPoint;
this._InTerminal = new InTerminal(AcknowledgementNumber);
this._OutTerminal = new OutTerminal(SequenceNumber);
}