public NativeSlice <byte> Receive(NetworkPipelineContext ctx, NativeSlice <byte> inboundBuffer, ref bool needsResume, ref bool needsUpdate, ref bool needsSendUpdate)
{
needsResume = false;
// Request a send update to see if a queued packet needs to be resent later or if an ack packet should be sent
needsSendUpdate = true;
var context = default(DataStreamReader.Context);
var header = default(ReliableUtility.PacketHeader);
var slice = default(NativeSlice <byte>);
unsafe
{
ReliableUtility.Context * reliable = (ReliableUtility.Context *)ctx.internalProcessBuffer.GetUnsafePtr();
ReliableUtility.SharedContext *shared = (ReliableUtility.SharedContext *)ctx.internalSharedProcessBuffer.GetUnsafePtr();
shared->errorCode = 0;
if (reliable->Resume == ReliableUtility.NullEntry)
{
if (inboundBuffer.Length <= 0)
{
return(slice);
}
var reader = new DataStreamReader(inboundBuffer);
reader.ReadBytes(ref context, (byte *)&header, UnsafeUtility.SizeOf <ReliableUtility.PacketHeader>());
if (header.Type == (ushort)ReliableUtility.PacketType.Ack)
{
ReliableUtility.ReadAckPacket(ctx, header);
inboundBuffer = new NativeSlice <byte>();
return(inboundBuffer);
}
var result = ReliableUtility.Read(ctx, header);
if (result >= 0)
{
var nextExpectedSequenceId = (ushort)(reliable->Delivered + 1);
if (result == nextExpectedSequenceId)
{
reliable->Delivered = result;
slice = inboundBuffer.Slice(UnsafeUtility.SizeOf <ReliableUtility.PacketHeader>());
if (needsResume = SequenceHelpers.GreaterThan16((ushort)shared->ReceivedPackets.Sequence,
(ushort)result))
{
reliable->Resume = (ushort)(result + 1);
}
}
else
{
ReliableUtility.SetPacket(ctx.internalProcessBuffer, result, inboundBuffer.Slice(UnsafeUtility.SizeOf <ReliableUtility.PacketHeader>()));
slice = ReliableUtility.ResumeReceive(ctx, reliable->Delivered + 1, ref needsResume);
}
}
}
else
{
slice = ReliableUtility.ResumeReceive(ctx, reliable->Resume, ref needsResume);
}
}
return(slice);
}
private static void Receive(ref NetworkPipelineContext ctx, ref InboundRecvBuffer inboundBuffer, ref NetworkPipelineStage.Requests requests)
{
// Request a send update to see if a queued packet needs to be resent later or if an ack packet should be sent
requests = NetworkPipelineStage.Requests.SendUpdate;
bool needsResume = false;
var header = default(ReliableUtility.PacketHeader);
var slice = default(InboundRecvBuffer);
ReliableUtility.Context * reliable = (ReliableUtility.Context *)ctx.internalProcessBuffer;
ReliableUtility.SharedContext *shared = (ReliableUtility.SharedContext *)ctx.internalSharedProcessBuffer;
shared->errorCode = 0;
if (reliable->Resume == ReliableUtility.NullEntry)
{
if (inboundBuffer.bufferLength <= 0)
{
inboundBuffer = slice;
return;
}
var inboundArray = NativeArrayUnsafeUtility.ConvertExistingDataToNativeArray <byte>(inboundBuffer.buffer, inboundBuffer.bufferLength, Allocator.Invalid);
#if ENABLE_UNITY_COLLECTIONS_CHECKS
var safetyHandle = AtomicSafetyHandle.GetTempMemoryHandle();
NativeArrayUnsafeUtility.SetAtomicSafetyHandle(ref inboundArray, safetyHandle);
#endif
var reader = new DataStreamReader(inboundArray);
reader.ReadBytes((byte *)&header, UnsafeUtility.SizeOf <ReliableUtility.PacketHeader>());
if (header.Type == (ushort)ReliableUtility.PacketType.Ack)
{
ReliableUtility.ReadAckPacket(ctx, header);
inboundBuffer = default;
return;
}
var result = ReliableUtility.Read(ctx, header);
if (result >= 0)
{
var nextExpectedSequenceId = (ushort)(reliable->Delivered + 1);
if (result == nextExpectedSequenceId)
{
reliable->Delivered = result;
slice = inboundBuffer.Slice(UnsafeUtility.SizeOf <ReliableUtility.PacketHeader>());
if (needsResume = SequenceHelpers.GreaterThan16((ushort)shared->ReceivedPackets.Sequence,
(ushort)result))
{
reliable->Resume = (ushort)(result + 1);
}
}
else
{
ReliableUtility.SetPacket(ctx.internalProcessBuffer, result, inboundBuffer.Slice(UnsafeUtility.SizeOf <ReliableUtility.PacketHeader>()));
slice = ReliableUtility.ResumeReceive(ctx, reliable->Delivered + 1, ref needsResume);
}
}
}
else
{
slice = ReliableUtility.ResumeReceive(ctx, reliable->Resume, ref needsResume);
}
if (needsResume)
{
requests |= NetworkPipelineStage.Requests.Resume;
}
inboundBuffer = slice;
}