public void Send(ISession session, IMessage message)
{
if (message is IRequest request)
{
if (request.RequestId == 0)
{
request.RequestId = request.RequestId = session.GetNextRequestId();
}
}
var bufferWriter = new SpanBufferWriter(stackalloc byte[412]);
if (message is IEncryptedMessage encryptedMessage)
{
if (session.EncryptionParameters is null)
{
if (message is not AcknowledgeMessage)
{
_logger.Warning(
"Attempted to send an encrypted messsage before " +
"any encryption parameters were established " +
$"(EndPoint='{session.EndPoint}')."
);
return;
}
bufferWriter.WriteBool(false); // IsEncrypted
_messageWriter.WriteTo(ref bufferWriter, message, PacketProperty);
}
else
{
encryptedMessage.SequenceId = session.GetNextSequenceId();
bufferWriter.WriteBool(true); // IsEncrypted
_encryptedMessageWriter.WriteTo(
ref bufferWriter, encryptedMessage,
session.EncryptionParameters.SendKey,
session.EncryptionParameters.SendMac,
PacketProperty
);
}
}
else
{
bufferWriter.WriteBool(false); // IsEncrypted
_messageWriter.WriteTo(ref bufferWriter, message, PacketProperty);
}
OnSent?.Invoke(session, bufferWriter.Data);
}
private void SendInternal <T>(ISession session, T message)
where T : class, IMessage
{
var buffer = new GrowingSpanBuffer(stackalloc byte[412]);
if (session.State != SessionState.New && message is IEncryptedMessage encryptedMessage)
{
encryptedMessage.SequenceId = session.GetNextRequestId();
buffer.WriteBool(true);
_encryptedMessageWriter.WriteTo(ref buffer, message, session.SendKey, session.SendMac);
}
else
{
buffer.WriteBool(false);
_messageWriter.WriteTo(ref buffer, message);
}
_logger.Verbose(
"Sending message " +
$"(EndPoint='{session.EndPoint}', " +
$"Data='{BitConverter.ToString(buffer.Data.ToArray())}')."
);
session.MasterServer.SendAsync(session.EndPoint, buffer.Data);
}
