private boolean handleReadException(
ChannelPipeline pipeline, ByteBuf byteBuf, Throwable cause, boolean close) {
if (byteBuf != null) {
if (byteBuf.isReadable()) {
readPending = false;
pipeline.fireChannelRead(byteBuf);
} else {
byteBuf.release();
}
}
pipeline.fireChannelReadComplete();
pipeline.fireExceptionCaught(cause);
if (close || cause instanceof IOException) {
closeOnRead(pipeline);
return true;
}
return false;
}
private void handleReadException(
ChannelPipeline pipeline, ByteBuf byteBuf, Throwable cause, boolean close) {
if (byteBuf != null) {
if (byteBuf.isReadable()) {
pipeline.fireChannelRead(byteBuf);
} else {
try {
byteBuf.release();
} catch (IllegalReferenceCountException ignore) {
// ignore as it may be released already
}
}
}
pipeline.fireChannelReadComplete();
pipeline.fireExceptionCaught(cause);
if (close || cause instanceof IOException) {
closeOnRead();
}
}
@Override
protected void doRead() {
if (checkInputShutdown()) {
return;
}
final ChannelPipeline pipeline = pipeline();
final ByteBuf byteBuf = pipeline.inboundByteBuffer();
boolean closed = false;
boolean read = false;
boolean firedInboundBufferSuspeneded = false;
try {
for (; ; ) {
int localReadAmount = doReadBytes(byteBuf);
if (localReadAmount > 0) {
read = true;
} else if (localReadAmount < 0) {
closed = true;
}
final int available = available();
if (available <= 0) {
break;
}
if (byteBuf.writable()) {
continue;
}
final int capacity = byteBuf.capacity();
final int maxCapacity = byteBuf.maxCapacity();
if (capacity == maxCapacity) {
if (read) {
read = false;
pipeline.fireInboundBufferUpdated();
if (!byteBuf.writable()) {
throw new IllegalStateException(
"an inbound handler whose buffer is full must consume at " + "least one byte.");
}
}
} else {
final int writerIndex = byteBuf.writerIndex();
if (writerIndex + available > maxCapacity) {
byteBuf.capacity(maxCapacity);
} else {
byteBuf.ensureWritableBytes(available);
}
}
}
} catch (Throwable t) {
if (read) {
read = false;
pipeline.fireInboundBufferUpdated();
}
if (t instanceof IOException) {
closed = true;
pipeline.fireExceptionCaught(t);
} else {
firedInboundBufferSuspeneded = true;
pipeline.fireInboundBufferSuspended();
pipeline.fireExceptionCaught(t);
unsafe().close(unsafe().voidFuture());
}
} finally {
if (read) {
pipeline.fireInboundBufferUpdated();
}
if (closed) {
inputShutdown = true;
if (isOpen()) {
if (Boolean.TRUE.equals(config().getOption(ChannelOption.ALLOW_HALF_CLOSURE))) {
pipeline.fireUserEventTriggered(ChannelInputShutdownEvent.INSTANCE);
} else {
unsafe().close(unsafe().voidFuture());
}
}
} else if (!firedInboundBufferSuspeneded) {
pipeline.fireInboundBufferSuspended();
}
}
}
@Override
protected void doRead() {
if (checkInputShutdown()) {
return;
}
final ChannelPipeline pipeline = pipeline();
// TODO: calculate size as in 3.x
ByteBuf byteBuf = alloc().buffer();
boolean closed = false;
boolean read = false;
boolean firedInboundBufferSuspeneded = false;
try {
for (; ; ) {
int localReadAmount = doReadBytes(byteBuf);
if (localReadAmount > 0) {
read = true;
} else if (localReadAmount < 0) {
closed = true;
}
final int available = available();
if (available <= 0) {
break;
}
if (!byteBuf.isWritable()) {
final int capacity = byteBuf.capacity();
final int maxCapacity = byteBuf.maxCapacity();
if (capacity == maxCapacity) {
if (read) {
read = false;
pipeline.fireMessageReceived(byteBuf);
byteBuf = alloc().buffer();
}
} else {
final int writerIndex = byteBuf.writerIndex();
if (writerIndex + available > maxCapacity) {
byteBuf.capacity(maxCapacity);
} else {
byteBuf.ensureWritable(available);
}
}
}
if (!config().isAutoRead()) {
// stop reading until next Channel.read() call
// See https://github.com/netty/netty/issues/1363
break;
}
}
} catch (Throwable t) {
if (read) {
read = false;
pipeline.fireMessageReceived(byteBuf);
}
if (t instanceof IOException) {
closed = true;
pipeline.fireExceptionCaught(t);
} else {
firedInboundBufferSuspeneded = true;
pipeline.fireChannelReadSuspended();
pipeline.fireExceptionCaught(t);
unsafe().close(voidPromise());
}
} finally {
if (read) {
pipeline.fireMessageReceived(byteBuf);
} else {
// nothing read into the buffer so release it
byteBuf.release();
}
if (closed) {
inputShutdown = true;
if (isOpen()) {
if (Boolean.TRUE.equals(config().getOption(ChannelOption.ALLOW_HALF_CLOSURE))) {
pipeline.fireUserEventTriggered(ChannelInputShutdownEvent.INSTANCE);
} else {
unsafe().close(unsafe().voidPromise());
}
}
} else if (!firedInboundBufferSuspeneded) {
pipeline.fireChannelReadSuspended();
}
}
}