protected virtual void Flush0()
{
if (this.inFlush0)
{
// Avoid re-entrance
return;
}
ChannelOutboundBuffer outboundBuffer = this.outboundBuffer;
if (outboundBuffer == null || outboundBuffer.IsEmpty)
{
return;
}
this.inFlush0 = true;
// Mark all pending write requests as failure if the channel is inactive.
if (!this.CanWrite)
{
try
{
if (this.channel.Open)
{
outboundBuffer.FailFlushed(NotYetConnectedException, true);
}
else
{
// Do not trigger channelWritabilityChanged because the channel is closed already.
outboundBuffer.FailFlushed(new ClosedChannelException(), false);
}
}
finally
{
this.inFlush0 = false;
}
return;
}
try
{
this.channel.DoWrite(outboundBuffer);
}
catch (Exception ex)
{
Util.CompleteChannelCloseTaskSafely(this.channel, this.CloseAsync(new ClosedChannelException("Failed to write", ex), false));
}
finally
{
this.inFlush0 = false;
}
}
protected Task CloseAsync(Exception cause, bool notify)
{
var promise = new TaskCompletionSource();
if (!promise.SetUncancellable())
{
return(promise.Task);
}
ChannelOutboundBuffer outboundBuffer = this.outboundBuffer;
if (outboundBuffer == null)
{
// Only needed if no VoidChannelPromise.
if (promise != TaskCompletionSource.Void)
{
// This means close() was called before so we just register a listener and return
return(this.channel.closeFuture.Task);
}
return(promise.Task);
}
if (this.channel.closeFuture.Task.IsCompleted)
{
// Closed already.
Util.SafeSetSuccess(promise, Logger);
return(promise.Task);
}
bool wasActive = this.channel.Active;
this.outboundBuffer = null; // Disallow adding any messages and flushes to outboundBuffer.
IEventExecutor closeExecutor = null; // todo closeExecutor();
if (closeExecutor != null)
{
closeExecutor.Execute(() =>
{
try
{
// Execute the close.
this.DoClose0(promise);
}
finally
{
// Call invokeLater so closeAndDeregister is executed input the EventLoop again!
this.InvokeLater(() =>
{
// Fail all the queued messages
outboundBuffer.FailFlushed(cause, notify);
outboundBuffer.Close(new ClosedChannelException());
this.FireChannelInactiveAndDeregister(wasActive);
});
}
});
}
else
{
try
{
// Close the channel and fail the queued messages input all cases.
this.DoClose0(promise);
}
finally
{
// Fail all the queued messages.
outboundBuffer.FailFlushed(cause, notify);
outboundBuffer.Close(new ClosedChannelException());
}
if (this.inFlush0)
{
this.InvokeLater(() => this.FireChannelInactiveAndDeregister(wasActive));
}
else
{
this.FireChannelInactiveAndDeregister(wasActive);
}
}
return(promise.Task);
}