private async Task ReadStreamAsync()
{
Memory <byte> buffer = new byte[FrameHeader.HeaderLength + this.framePayloadMaxLength];
Memory <byte> headerBuffer = buffer.Slice(0, FrameHeader.HeaderLength);
Memory <byte> payloadBuffer = buffer.Slice(FrameHeader.HeaderLength);
try
{
while (!this.Completion.IsCompleted)
{
if (!await ReadToFillAsync(this.stream, headerBuffer, throwOnEmpty: false, this.DisposalToken).ConfigureAwait(false))
{
break;
}
var header = FrameHeader.Deserialize(headerBuffer.Span);
if (this.TraceSource.Switch.ShouldTrace(TraceEventType.Information))
{
this.TraceSource.TraceEvent(TraceEventType.Information, (int)TraceEventId.FrameReceived, "Received {0} frame for channel {1} with {2} bytes of content.", header.Code, header.ChannelId, header.FramePayloadLength);
}
switch (header.Code)
{
case ControlCode.Offer:
await this.OnOffer(header.ChannelId, payloadBuffer.Slice(0, header.FramePayloadLength), this.DisposalToken).ConfigureAwait(false);
break;
case ControlCode.OfferAccepted:
this.OnOfferAccepted(header.ChannelId);
break;
case ControlCode.Content:
await this.OnContent(header, this.DisposalToken).ConfigureAwait(false);
break;
case ControlCode.ContentWritingCompleted:
this.OnContentWritingCompleted(header.ChannelId);
break;
case ControlCode.ChannelTerminated:
this.OnChannelTerminated(header.ChannelId);
break;
default:
break;
}
}
}
catch (EndOfStreamException)
{
// When we unexpectedly hit an end of stream, just close up shop.
}
this.Dispose();
}