public async Task WriteTrailersAsync(IEnumerable <HeaderField> headers)
{
HeaderValidationResult hvr = HeaderValidator.ValidateTrailingHeaders(headers);
if (hvr != HeaderValidationResult.Ok)
{
throw new Exception(hvr.ToString());
}
var removeStream = false;
await writeMutex.WaitAsync();
try
{
lock (stateMutex)
{
if (!dataSent)
{
throw new Exception("试图在没有数据的情况下写入");
}
switch (state)
{
case StreamState.Open:
state = StreamState.HalfClosedLocal;
break;
case StreamState.HalfClosedRemote:
state = StreamState.HalfClosedRemote;
state = StreamState.Closed;
removeStream = true;
break;
case StreamState.Idle:
case StreamState.ReservedRemote:
case StreamState.HalfClosedLocal:
case StreamState.Closed:
throw new Exception("发送的状态无效");
case StreamState.Reset:
throw new StreamResetException();
case StreamState.ReservedLocal:
throw new Exception("意外状态：发送数据后保留本地");
}
}
await SendHeaders(headers, true); // TODO: Use result
}
finally
{
writeMutex.Release();
if (removeStream)
{
connection.UnregisterStream(this);
}
}
}
public async Task WriteTrailersAsync(IEnumerable <HeaderField> headers)
{
HeaderValidationResult hvr = HeaderValidator.ValidateTrailingHeaders(headers);
// TODO: For push promises other validates might need to be used
if (hvr != HeaderValidationResult.Ok)
{
throw new Exception(hvr.ToString());
}
var removeStream = false;
await writeMutex.WaitAsync();
try
{
// Check what already has been sent
lock (stateMutex)
{
if (!dataSent)
{
throw new Exception("Attempted to write trailers without data");
}
switch (state)
{
case StreamState.Open:
state = StreamState.HalfClosedLocal;
break;
case StreamState.HalfClosedRemote:
state = StreamState.HalfClosedRemote;
state = StreamState.Closed;
removeStream = true;
break;
case StreamState.Idle:
case StreamState.ReservedRemote:
case StreamState.HalfClosedLocal:
case StreamState.Closed:
throw new Exception("Invalid state for sending trailers");
case StreamState.Reset:
throw new StreamResetException();
case StreamState.ReservedLocal:
// We can't be in here if we already have data sent
throw new Exception("Unexpected state: ReservedLocal after data sent");
}
}
await SendHeaders(headers, true); // TODO: Use result
}
finally
{
writeMutex.Release();
if (removeStream)
{
connection.UnregisterStream(this);
}
}
}
