Sebastian Wiendl created PLC4X-153:
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Summary: Exception on S7 disconnect
Key: PLC4X-153
URL: https://issues.apache.org/jira/browse/PLC4X-153
Project: Apache PLC4X
Issue Type: Bug
Affects Versions: 0.4.0
Environment: Siemens S7-1500 PLC
Windows 10 Notebook
PLC4J + S7 Driver 0.4.0
java version "1.8.0_231"
Java(TM) SE Runtime Environment (build 1.8.0_231-b11)
Java HotSpot(TM) Client VM (build 25.231-b11, mixed mode)
Reporter: Sebastian Wiendl
My PLC4J demo project at https://github.com/sewiendl/plc4j-demo yields the
following output after/during disconnecting from the PLC:{code}all requests
took PT2M6.261S
Nov 14, 2019 10:05:13 AM io.netty.channel.DefaultChannelPipeline
onUnhandledInboundException
WARNUNG: 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.
java.io.IOException: Eine vorhandene Verbindung wurde vom Remotehost geschlossen
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
at sun.nio.ch.IOUtil.read(IOUtil.java:192)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)
at
io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:288)
at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1125)
at
io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:347)
at
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148)
at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:682)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:617)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:534)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:496)
at
io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:906)
at
io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:748)
disconnected{code}This bug report relates to my questions on the mailing list.
I will also try to hand in a wireshark dump later.
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