Hi. I am receiving data over a netty channel and than after striping 4
bytes I am writing it to another netty channel. Following function is
trying to achieve this.
@Override
public void orderedPacket(ByteBuf packet) {
// log.info(packet.toString());
byte[] bytes = new byte[packet.capacity() - 4 ];
packet.getBytes(4, bytes);
ChannelFuture cf = hostChannel.writeAndFlush(bytes);
// if (!cf.isSuccess()) log.error("write back to host not successful {}",
cf.cause());
}
However it throws following exception.
11:28:21.091 [nioEventLoopGroup-4-4] WARN i.n.channel.DefaultChannelPipeline -
An exceptionCaught() event was fired, and it reached at the tail of the
pipeline. It usually means the last handler in the pipeline did not handle the
exception.
io.netty.util.IllegalReferenceCountException: refCnt: 0
at
io.netty.buffer.AbstractByteBuf.ensureAccessible(AbstractByteBuf.java:1415)
~[sosagent.jar:1.0-SNAPSHOT]
at
io.netty.buffer.AbstractByteBuf.checkIndex(AbstractByteBuf.java:1354)
~[sosagent.jar:1.0-SNAPSHOT]
at
io.netty.buffer.UnsafeByteBufUtil.getBytes(UnsafeByteBufUtil.java:481)
~[sosagent.jar:1.0-SNAPSHOT]
at
io.netty.buffer.PooledUnsafeDirectByteBuf.getBytes(PooledUnsafeDirectByteBuf.java:131)
~[sosagent.jar:1.0-SNAPSHOT]
at
io.netty.buffer.PooledSlicedByteBuf.getBytes(PooledSlicedByteBuf.java:233)
~[sosagent.jar:1.0-SNAPSHOT]
at io.netty.buffer.AbstractByteBuf.getBytes(AbstractByteBuf.java:474)
~[sosagent.jar:1.0-SNAPSHOT]* at
edu.clemson.openflow.sos.agent.AgentClient.orderedPacket(AgentClient.java:81)
~[sosagent.jar:1.0-SNAPSHOT]
* at
edu.clemson.openflow.sos.buf.OrderedPacketInitiator.orderedPacket(OrderedPacketInitiator.java:17)
~[sosagent.jar:1.0-SNAPSHOT]
at edu.clemson.openflow.sos.buf.Buffer.sendData(Buffer.java:84)
~[sosagent.jar:1.0-SNAPSHOT]
The bold line in stack-trace corresponds to *packet.getBytes(*4*, bytes); *in
my method.
Any idea what might be problem here.
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