public static async Task AssertGoAwayReception(
this IReadableByteStream stream,
ErrorCode expectedErrorCode,
uint lastStreamId)
{
var hdr = await stream.ReadFrameHeaderWithTimeout();
Assert.Equal(FrameType.GoAway, hdr.Type);
Assert.Equal(0u, hdr.StreamId);
Assert.Equal(0, hdr.Flags);
Assert.InRange(hdr.Length, 8, 256);
var goAwayBytes = new byte[hdr.Length];
await stream.ReadAllWithTimeout(new ArraySegment <byte>(goAwayBytes));
var goAwayData = GoAwayFrameData.DecodeFrom(new ArraySegment <byte>(goAwayBytes));
Assert.Equal(lastStreamId, goAwayData.Reason.LastStreamId);
Assert.Equal(expectedErrorCode, goAwayData.Reason.ErrorCode);
}
private async ValueTask <Http2Error?> HandleGoAwayFrame(FrameHeader fh)
{
if (fh.StreamId != 0 || fh.Length < 8)
{
return(new Http2Error
{
StreamId = 0,
Code = ErrorCode.ProtocolError,
Message = "接收到无效的goaway帧头",
});
}
if (fh.Length > localSettings.MaxFrameSize)
{
return(new Http2Error
{
StreamId = 0,
Code = ErrorCode.FrameSizeError,
Message = "超过最大帧大小",
});
}
EnsureBuffer(fh.Length);
await inputStream.ReadAll(new ArraySegment <byte>(receiveBuffer, 0, fh.Length));
var goAwayData = GoAwayFrameData.DecodeFrom(
new ArraySegment <byte>(receiveBuffer, 0, fh.Length));
if (!remoteGoAwayTcs.Task.IsCompleted)
{
var reason = goAwayData.Reason;
var data = reason.DebugData;
var debugData = new byte[data.Count];
Array.Copy(data.Array, data.Offset, debugData, 0, data.Count);
reason.DebugData = new ArraySegment <byte>(debugData);
remoteGoAwayTcs.TrySetResult(reason);
}
return(null);
}