UdpSendStatus SendFragmentedMessage(UdpRawMessage message, IChannel channel)
{
message.Position = 0;
int mtu = this.Mtu;
ushort frame = 1;
ushort frames = (ushort)Math.Ceiling(message.Length / (float)(mtu - Datagram.GetHeaderSize(true)));
ushort groupId = GetNextFragementationGroupId();
do
{
Debug.Assert(frame <= frames, "frame > frames");
Datagram datagramFrag = Datagram.CreateNew(peer.Configuration.MemoryStreamPool, mtu);
datagramFrag.Type = MessageType.UserData;
datagramFrag.Channel = channel.Descriptor.Channel;
datagramFrag.DeliveryType = channel.Descriptor.DeliveryType;
datagramFrag.FragmentationInfo = new Datagram.FragmentInfo(groupId, frame, frames);
datagramFrag.ConnectionKey = this.EndPoint.ConnectionKey;
int toCopy = mtu - Datagram.GetHeaderSize(true);
if (toCopy > message.Length - message.Position)
{
toCopy = message.Length - message.Position;
}
message.CopyTo(datagramFrag.BaseStream, toCopy);
channel.SendDatagram(datagramFrag);
frame++;
} while (message.Position < message.Length);
message.Dispose();
return(UdpSendStatus.Enqueued);
}
internal void StartConnect(UdpRawMessage payload)
{
if (!CheckStatus(UdpConnectionStatus.Waiting))
{
throw new InvalidOperationException($"Couldn't connect wrong status: {Status}, expected {UdpConnectionStatus.Waiting}");
}
logger.Info($"Connecting to {EndPoint.EndPoint}");
ChangeStatus(UdpConnectionStatus.Connecting);
lastStatusPacketSent = DateTime.UtcNow;
if (payload == null)
{
connectReq = CreateSpecialDatagram(MessageType.ConnectReq);
}
else
{
connectReq = CreateSpecialDatagram(MessageType.ConnectReq, payload);
payload.Dispose();
}
connectReq.DontDisposeOnSend = true;
SendDatagramAsync(connectReq);
}
public virtual void Close(UdpRawMessage payload)
{
if (Status >= UdpConnectionStatus.Disconnecting)
{
return;
}
ChangeStatus(UdpConnectionStatus.Disconnecting);
Datagram disconnectReq;
if (payload == null)
{
disconnectReq = CreateSpecialDatagram(MessageType.DisconnectReq);
}
else
{
disconnectReq = CreateSpecialDatagram(MessageType.DisconnectReq, payload);
}
disconnectReq.DontDisposeOnSend = true;
this.disconnectReq = disconnectReq;
lastStatusPacketSent = DateTime.UtcNow;
SendDatagramAsync(disconnectReq);
payload?.Dispose();
}