private void ProcessReceivedBytes(byte[] buffer, int offset, int bytesTransferred)
{
while (bytesTransferred > 0)
{
if (!_handshakeCompleted)
{
var isCompleted = _handshakeFrame.Read(buffer, ref offset, ref bytesTransferred);
if (!isCompleted)
{
return;
}
HandshakeReceived(this, new HandshakeFrameReceivedEventArgs(_handshakeFrame));
_handshakeFrame.ResetRead();
continue;
}
switch (_frameType)
{
case FrameType.Unknown:
var flags = (FrameFlags)buffer[offset];
if ((flags & FrameFlags.ExtensionFrame) != 0)
{
_frameType = FrameType.Extension;
}
else if ((flags & FrameFlags.CommandFrame) != 0)
{
_frameType = FrameType.Command;
}
else
{
_frameType = FrameType.Message;
}
//do not increase offset, let the frame handle the flags.
//only peek it to be able to switch state
break;
case FrameType.Message:
var isCompleted = _inboundMessage.Read(buffer, ref offset, ref bytesTransferred);
if (isCompleted)
{
MessageFrameReceived(_inboundMessage);
_inboundMessage.ResetRead();
_frameType = FrameType.Unknown;
}
break;
case FrameType.Extension:
var isCompleted2 = _extensionFrameProcessor.Read(buffer, ref offset, ref bytesTransferred);
if (isCompleted2)
{
_frameType = FrameType.Unknown;
}
break;
}
}
}
public void frame_Should_be_able_to_parse_multiple_incoming_buffers_if_reseted_in_between()
{
var bufferManager = new BufferManager(8192, 1);
var context = new WriterContext(bufferManager);
var buffer = bufferManager.Dequeue();
bufferManager.Enqueue(buffer);
var sut = new HandshakeFrame();
sut.Identity = "Client";
sut.OptionalExtensions = new[] { new HandshakeExtension("json"), new HandshakeExtension("ack") };
sut.RequiredExtensions = new[] { new HandshakeExtension("dotnet") };
sut.VersionMajor = 1;
sut.Write(context);
sut.ResetWrite(context);
var offset = buffer.Offset;
var len = context.GetPackets()[0].Count;
sut.Read(buffer.Array, ref offset, ref len);
sut.ResetRead();
offset = buffer.Offset;
len = context.GetPackets()[0].Count;
sut.Read(buffer.Array, ref offset, ref len);
len.Should().Be(0);
}
