public override void FinishRead(SocketChannelAsyncOperation operation)
{
Contract.Requires(this.channel.EventLoop.InEventLoop);
AbstractSocketMessageChannel ch = this.Channel;
ch.ResetState(StateFlags.ReadScheduled);
IChannelConfiguration config = ch.Configuration;
if (!config.AutoRead && !ch.ReadPending)
{
// ChannelConfig.setAutoRead(false) was called in the meantime
//removeReadOp(); -- noop with IOCP, just don't schedule receive again
return;
}
int maxMessagesPerRead = config.MaxMessagesPerRead;
IChannelPipeline pipeline = ch.Pipeline;
bool closed = false;
Exception exception = null;
try
{
try
{
while (true)
{
int localRead = ch.DoReadMessages(this.readBuf);
if (localRead == 0)
{
break;
}
if (localRead < 0)
{
closed = true;
break;
}
// stop reading and remove op
if (!config.AutoRead)
{
break;
}
if (this.readBuf.Count >= maxMessagesPerRead)
{
break;
}
}
}
catch (Exception t)
{
exception = t;
}
ch.ReadPending = false;
int size = this.readBuf.Count;
for (int i = 0; i < size; i++)
{
pipeline.FireChannelRead(this.readBuf[i]);
}
this.readBuf.Clear();
pipeline.FireChannelReadComplete();
if (exception != null)
{
var asSocketException = exception as SocketException;
if (asSocketException != null && asSocketException.SocketErrorCode != SocketError.TryAgain) // todo: other conditions for not closing message-based socket?
{
// ServerChannel should not be closed even on SocketException because it can often continue
// accepting incoming connections. (e.g. too many open files)
closed = !(ch is IServerChannel);
}
pipeline.FireExceptionCaught(exception);
}
if (closed)
{
if (ch.Open)
{
this.CloseAsync();
}
}
}
finally
{
// Check if there is a readPending which was not processed yet.
// This could be for two reasons:
// /// The user called Channel.read() or ChannelHandlerContext.read() in channelRead(...) method
// /// The user called Channel.read() or ChannelHandlerContext.read() in channelReadComplete(...) method
//
// See https://github.com/netty/netty/issues/2254
if (!closed && (config.AutoRead || ch.ReadPending))
{
ch.DoBeginRead();
}
}
}
public override void FinishRead(SocketChannelAsyncOperation operation)
{
Contract.Assert(this.channel.EventLoop.InEventLoop);
AbstractSocketMessageChannel ch = this.Channel;
if ((ch.ResetState(StateFlags.ReadScheduled) & StateFlags.Active) == 0)
{
return; // read was signaled as a result of channel closure
}
IChannelConfiguration config = ch.Configuration;
IChannelPipeline pipeline = ch.Pipeline;
IRecvByteBufAllocatorHandle allocHandle = this.Channel.Unsafe.RecvBufAllocHandle;
allocHandle.Reset(config);
bool closed = false;
Exception exception = null;
try
{
try
{
do
{
int localRead = ch.DoReadMessages(this.readBuf);
if (localRead == 0)
{
break;
}
if (localRead < 0)
{
closed = true;
break;
}
allocHandle.IncMessagesRead(localRead);
}while (allocHandle.ContinueReading());
}
catch (Exception t)
{
exception = t;
}
int size = this.readBuf.Count;
for (int i = 0; i < size; i++)
{
ch.ReadPending = false;
pipeline.FireChannelRead(this.readBuf[i]);
}
this.readBuf.Clear();
allocHandle.ReadComplete();
pipeline.FireChannelReadComplete();
if (exception != null)
{
var asSocketException = exception as SocketException;
if (asSocketException != null && asSocketException.SocketErrorCode != SocketError.TryAgain) // todo: other conditions for not closing message-based socket?
{
// ServerChannel should not be closed even on SocketException because it can often continue
// accepting incoming connections. (e.g. too many open files)
closed = !(ch is IServerChannel);
}
pipeline.FireExceptionCaught(exception);
}
if (closed)
{
if (ch.Open)
{
this.CloseSafe();
}
}
}
finally
{
// Check if there is a readPending which was not processed yet.
// This could be for two reasons:
// /// The user called Channel.read() or ChannelHandlerContext.read() in channelRead(...) method
// /// The user called Channel.read() or ChannelHandlerContext.read() in channelReadComplete(...) method
//
// See https://github.com/netty/netty/issues/2254
if (!closed && (ch.ReadPending || config.AutoRead))
{
ch.DoBeginRead();
}
}
}