public bool SendNotify(Connection connection, byte[] data, object userObject)
{
if (connection.SendWindow.IsFull)
{
return(false);
}
// 1: packet type enum - 1 byte
// 2: sequence number for this packet - _config.SequenceNumberBytes bytes
// 3: recv sequence - _config.SequenceNumberBytes bytes
// 4: recv mask - 8 bytes
if (data.Length > (_config.Mtu - NotifyPacketHeaderSize))
{
throw new InvalidOperationException();
}
var sequenceNumberForPacket = connection.SendSequencer.Next();
var buffer = GetMtuBuffer();
// copy from data into buffer
Buffer.BlockCopy(data, 0, buffer, NotifyPacketHeaderSize, data.Length);
// write packet type
buffer[0] = (byte)PacketTypes.Notify;
var offset = 1;
// write sequence number of *this* packet
ByteUtils.WriteULong(buffer, offset, _config.SequenceNumberBytes, sequenceNumberForPacket);
offset += _config.SequenceNumberBytes;
// write *recv sequence* for this connection
ByteUtils.WriteULong(buffer, offset, _config.SequenceNumberBytes, connection.RecvSequence);
offset += _config.SequenceNumberBytes;
// write *recv mask* for this connection
ByteUtils.WriteULong(buffer, offset, 8, connection.RecvMask);
// push on send window
connection.SendWindow.Push(new SendEnvelope {
Sequence = sequenceNumberForPacket,
SendTime = _clock.ElapsedInSeconds,
UserData = userObject
});
Send(connection, buffer, NotifyPacketHeaderSize + data.Length);
return(true);
}
public bool SendNotify(Connection connection, byte[] data, object?userObject)
{
if (connection.SendWindow.IsFull)
{
return(false);
}
if (data.Length > (_config.MTU - NotifyPacketHeaderSize))
{
Log.Error($"[SendNotify]: Data too large, above MTU-Header_Size({NotifyPacketHeaderSize}) {data.Length}");
return(false);
}
var sequenceNumberForPacket = connection.SendSequencer.Next();
var buffer = GetMtuBuffer();
Buffer.BlockCopy(data, 0, buffer, NotifyPacketHeaderSize, data.Length);
// Fill header data
buffer[0] = (byte)PacketType.Notify;
var offset = 1;
ByteUtils.WriteULong(buffer, offset, _config.SequenceNumberBytes, sequenceNumberForPacket);
offset += _config.SequenceNumberBytes;
ByteUtils.WriteULong(buffer, offset, _config.SequenceNumberBytes, connection.LastReceivedSequence);
offset += _config.SequenceNumberBytes;
ByteUtils.WriteULong(buffer, offset, sizeof(ulong), connection.ReceiveMask);
connection.SendWindow.Push(new SendEnvelope()
{
Sequence = sequenceNumberForPacket,
SendTime = _timer.Now,
UserData = userObject
});
SendInternal(connection, buffer, NotifyPacketHeaderSize + data.Length);
return(true);
}