internal new static async ValueTask <ReadResult <Control> > TryReadAsync(
IFrameReader frameReader,
CancellationToken cancellation = default)
{
var version =
(ushort)(await frameReader.ReadUShortAsync(cancellation)
.ConfigureAwait(false) & 0x7FFF);
if (version != Version)
{
// todo: What stream id should be specified here?
return(ReadResult <Control> .Error(RstStream.UnsupportedVersion(UInt31.From(0))));
}
var type = await frameReader.ReadUShortAsync(cancellation)
.ConfigureAwait(false);
var flags = await frameReader.ReadByteAsync(cancellation)
.ConfigureAwait(false);
var length = await frameReader.ReadUInt24Async(cancellation)
.ConfigureAwait(false);
return(type switch
{
SynStream.Type => (await SynStream.TryReadAsync(
flags, length, frameReader, cancellation)
.ConfigureAwait(false)).AsControl(),
SynReply.Type => (await SynReply.TryReadAsync(
flags, length, frameReader, cancellation)
.ConfigureAwait(false)).AsControl(),
RstStream.Type => (await RstStream.TryReadAsync(
flags, length, frameReader, cancellation)
.ConfigureAwait(false)).AsControl(),
Settings.Type => (await Settings.TryReadAsync(
flags, length, frameReader, cancellation)
.ConfigureAwait(false)).AsControl(),
Ping.Type => (await Ping.TryReadAsync(
flags, length, frameReader, cancellation)
.ConfigureAwait(false)).AsControl(),
GoAway.Type => (await GoAway.TryReadAsync(
flags, length, frameReader, cancellation)
.ConfigureAwait(false)).AsControl(),
Headers.Type => (await Headers.TryReadAsync(
flags, length, frameReader, cancellation)
.ConfigureAwait(false)).AsControl(),
WindowUpdate.Type => (await WindowUpdate.TryReadAsync(
flags, length, frameReader, cancellation)
.ConfigureAwait(false)).AsControl(),
_ => throw new ArgumentOutOfRangeException(
nameof(type), $"Unknown control frame type {type} received")
});
internal new static async ValueTask <ReadResult <Data> > TryReadAsync(
IFrameReader frameReader,
CancellationToken cancellation = default)
{
// Since bit 31 is the control bit which is 0 for data frames,
// there is no need to blank it out
var streamId = UInt31.From(
await frameReader.ReadUInt32Async(cancellation)
.ConfigureAwait(false));
var flags = await frameReader.ReadByteAsync(cancellation)
.ConfigureAwait(false);
var length = await frameReader.ReadUInt24Async(cancellation)
.ConfigureAwait(false);
var payload = await frameReader.ReadBytesAsync(
(int)length.Value, cancellation)
.ConfigureAwait(false);
return(ReadResult.Ok(new Data(streamId, flags.ToEnum <Options>(), payload)));
}