void SendAckPackets()
{
// LogFile.WriteLine("Checking Last ack " + ((int)DateTime.Now.Subtract( lastackpacketsent ).TotalMilliseconds).ToString() );
if ((int)DateTime.Now.Subtract(lastackpacketsent).TotalMilliseconds > AckPacketIntervalSeconds * 1000)
{
lastackpacketsent = DateTime.Now;
byte[] ackpacketdata = null;
lock ( receivedpacketsnotacked )
{
if (receivedpacketsnotacked.Count == 0)
{
return;
}
//LogFile.WriteLine("Creating ack packet..." );
int numpacketstoack = receivedpacketsnotacked.Count;
ackpacketdata = new byte[numpacketstoack * 2];
int nextposition = 0;
for (int i = 0; i < numpacketstoack; i++)
{
short packettoack = (short)receivedpacketsnotacked.Dequeue();
binarypacker.WriteValueToBuffer(ackpacketdata, ref nextposition, packettoack);
// LogFile.WriteLine(" ... acking " + packettoack.ToString() );
}
}
//LogFile.WriteLine("Sending ack packet " + Encoding.ASCII.GetString( ackpacketdata, 0, ackpacketdata.Length ) );
parent.SendNonAckable('A', ackpacketdata);
}
}
// server sends C packet to client, which contains the shared key, and also the temporary client key the client sent
// server knows key now, client will receive it
// Packet format: [int32 xxx][short xxx][char 'C'][temporary client key][shared key]
// server replies to any R packet, generating the shared key if the connection didnt exist before
public void RPacketHandler(object source, PacketHandlerArgs e)
{
if (isserver)
{
byte[] packet = e.Data;
int tempnextposition = e.NextPosition;
int tempclientkey = (int)binarypacker.ReadValueFromBuffer(packet, ref tempnextposition, typeof(int));
LogFile.WriteLine("R packet received, sending C packet, tempclientkey: " + tempclientkey.ToString() + " sharedkey: " + SharedSecretKey.ToString());
byte[] newpacket = new byte[8];
tempnextposition = 0;
binarypacker.WriteValueToBuffer(newpacket, ref tempnextposition, tempclientkey);
binarypacker.WriteValueToBuffer(newpacket, ref tempnextposition, SharedSecretKey);
parent.SendNonAckable('C', newpacket);
if (!Validated)
{
Validated = true;
LogFile.WriteLine("Shared key sent; marking connection open");
parent.OnConnectionValidated();
}
}
}