korni128 opened a new issue, #1593:
URL: https://github.com/apache/plc4x/issues/1593
### What happened?
The PlcConnection is not working propertly in my setup for S7 PLC. Maybe it
is related to Issue 1257.
My test code (the test is not successful).
```
import static org.assertj.core.api.Assertions.assertThat;
import org.apache.plc4x.java.DefaultPlcDriverManager;
import org.apache.plc4x.java.api.PlcConnection;
import org.junit.jupiter.api.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class BasicConnectionTest {
@Test
void testConnection() throws Exception {
String url = "s7://127.0.0.1:102?remote-rack=0&remote-slot=1";
PlcConnection plcConnection = new
DefaultPlcDriverManager().getConnectionManager().getConnection(url);
assertThat(plcConnection.isConnected()).isTrue();
plcConnection.close();
}
}
```
Apart from that, some requests seem to work properly when the connection is
used afterwards.
Log output produced with test code in Version v0.12.0
```
INFO o.a.p.java.DefaultPlcDriverManager - Instantiating new PLC Driver
Manager with class loader
jdk.internal.loader.ClassLoaders$AppClassLoader@76ed5528
INFO o.a.p.java.DefaultPlcDriverManager - Registering available drivers...
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
s7 (Siemens S7 (Basic))
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
plc4x (PLC4X (Proxy-Protocol))
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
mock (Mock Protocol Implementation)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
ab-eth (Allen Bradley ETH)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
ads (Beckhoff TwinCat ADS)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
bacnet-ip (BACnet/IP)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
c-bus (Clipsal C-Bus)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
genericcan (Generic CAN)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
canopen (CAN open)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
eip (EthernetIP)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
logix (Logix CIP)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
firmata (Firmata)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
iec-60870-5-104 (IEC 60870-5-104)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
knxnet-ip (KNXNet/IP)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
open-protocol (Open-Protocol)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
modbus-ascii (Modbus ASCII)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
modbus-rtu (Modbus RTU)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
modbus-tcp (Modbus TCP)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
opcua (Opcua)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
profinet (Profinet)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
simulated (Simulated PLC4X Datasource)
INFO o.a.p.j.t.tcp.TcpChannelFactory - Configuring Bootstrap with
org.apache.plc4x.java.s7.readwrite.configuration.S7TcpTransportConfiguration@78a287ed
INFO o.a.p.j.s.r.protocol.S7ProtocolLogic - S7 Driver running in ACTIVE
mode.
INFO o.a.p.j.s.r.protocol.S7HMuxImpl - 15:19:00.091903500
userEventTriggered: Multiplexor Event:
org.apache.plc4x.java.spi.events.ConnectEvent@6bc248ed
WARN i.n.channel.embedded.EmbeddedChannel - More than one exception was
raised. Will report only the first one and log others.
io.netty.handler.codec.DecoderException:
io.netty.handler.codec.EncoderException: MessageToMessageCodec$1 must produce
at least one message.
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98)
at
io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at
io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
at
io.netty.handler.codec.ByteToMessageCodec.channelRead(ByteToMessageCodec.java:103)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.handler.logging.LoggingHandler.channelRead(LoggingHandler.java:280)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
org.apache.plc4x.java.s7.readwrite.protocol.S7HMuxImpl.decode(S7HMuxImpl.java:145)
at
org.apache.plc4x.java.s7.readwrite.protocol.S7HMuxImpl.decode(S7HMuxImpl.java:1)
at
io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
at
io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
at
io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
at
io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: io.netty.handler.codec.EncoderException: MessageToMessageCodec$1
must produce at least one message.
at
io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:99)
at
io.netty.handler.codec.MessageToMessageCodec.write(MessageToMessageCodec.java:116)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:891)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:875)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:984)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:868)
at
io.netty.handler.logging.LoggingHandler.write(LoggingHandler.java:288)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:891)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:875)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:984)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:868)
at
io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:113)
at
io.netty.handler.codec.ByteToMessageCodec.write(ByteToMessageCodec.java:108)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:891)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:875)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:984)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:868)
at
io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113)
at
io.netty.handler.codec.MessageToMessageCodec.write(MessageToMessageCodec.java:116)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:891)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:875)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:984)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:868)
at
io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113)
at
io.netty.handler.codec.MessageToMessageCodec.write(MessageToMessageCodec.java:116)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:891)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:956)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:982)
at
io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:950)
at
io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:1000)
at
io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025)
at
io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306)
at
org.apache.plc4x.java.spi.internal.DefaultConversationContext.sendToWire(DefaultConversationContext.java:70)
at
org.apache.plc4x.java.spi.internal.DefaultSendRequestContext.handle(DefaultSendRequestContext.java:107)
at
org.apache.plc4x.java.spi.internal.DefaultSendRequestContext.handle(DefaultSendRequestContext.java:1)
at
org.apache.plc4x.java.s7.readwrite.protocol.S7ProtocolLogic.lambda$3(S7ProtocolLogic.java:194)
at
java.base/java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
at
org.apache.plc4x.java.spi.Plc4xNettyWrapper.decode(Plc4xNettyWrapper.java:183)
at
io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
... 40 common frames omitted
WARN i.n.channel.embedded.EmbeddedChannel - More than one exception was
raised. Will report only the first one and log others.
io.netty.handler.codec.DecoderException:
io.netty.handler.codec.EncoderException: MessageToMessageCodec$1 must produce
at least one message.
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98)
at
io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at
io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
at
io.netty.handler.codec.ByteToMessageCodec.channelRead(ByteToMessageCodec.java:103)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.handler.logging.LoggingHandler.channelRead(LoggingHandler.java:280)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
org.apache.plc4x.java.s7.readwrite.protocol.S7HMuxImpl.decode(S7HMuxImpl.java:145)
at
org.apache.plc4x.java.s7.readwrite.protocol.S7HMuxImpl.decode(S7HMuxImpl.java:1)
at
io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
at
io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
at
io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
at
io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: io.netty.handler.codec.EncoderException: MessageToMessageCodec$1
must produce at least one message.
at
io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:99)
at
io.netty.handler.codec.MessageToMessageCodec.write(MessageToMessageCodec.java:116)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:891)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:875)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:984)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:868)
at
io.netty.handler.logging.LoggingHandler.write(LoggingHandler.java:288)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:891)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:875)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:984)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:868)
at
io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:113)
at
io.netty.handler.codec.ByteToMessageCodec.write(ByteToMessageCodec.java:108)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:891)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:875)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:984)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:868)
at
io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113)
at
io.netty.handler.codec.MessageToMessageCodec.write(MessageToMessageCodec.java:116)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:891)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:875)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:984)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:868)
at
io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113)
at
io.netty.handler.codec.MessageToMessageCodec.write(MessageToMessageCodec.java:116)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:891)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:956)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:982)
at
io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:950)
at
io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:1000)
at
io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025)
at
io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306)
at
org.apache.plc4x.java.spi.internal.DefaultConversationContext.sendToWire(DefaultConversationContext.java:70)
at
org.apache.plc4x.java.spi.internal.DefaultSendRequestContext.handle(DefaultSendRequestContext.java:107)
at
org.apache.plc4x.java.spi.internal.DefaultSendRequestContext.handle(DefaultSendRequestContext.java:1)
at
org.apache.plc4x.java.s7.readwrite.protocol.S7ProtocolLogic.lambda$8(S7ProtocolLogic.java:231)
at
java.base/java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
at
org.apache.plc4x.java.spi.Plc4xNettyWrapper.decode(Plc4xNettyWrapper.java:183)
at
io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
... 40 common frames omitted
INFO o.a.p.j.s.r.protocol.S7HMuxImpl - 15:19:01.185479400
userEventTriggered: Multiplexor Event:
org.apache.plc4x.java.spi.events.ConnectedEvent@23421ec
INFO o.a.p.j.s.r.protocol.S7HMuxImpl - java.util.NoSuchElementException:
watchdog
```
If I try to debug then I run into a timeout but there is also
NullPointerException. But I think that is something else and maybe not
important.
```
INFO o.a.p.j.s.r.protocol.S7ProtocolLogic - S7 Driver running in ACTIVE
mode.
INFO o.a.p.j.s.r.protocol.S7ProtocolLogic - Timeout during Connection
establishing, closing channel...
INFO o.a.p.j.s.r.protocol.S7HMuxImpl - 15:30:51.442180800
userEventTriggered: Multiplexor Event:
org.apache.plc4x.java.spi.events.ConnectEvent@39fdf04b
WARN i.n.channel.embedded.EmbeddedChannel - More than one exception was
raised. Will report only the first one and log others.
io.netty.handler.codec.DecoderException: java.lang.NullPointerException:
Cannot invoke "org.apache.plc4x.java.s7.readwrite.S7Message.getParameter()"
because "s7msg" is null
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98)
at
io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at
io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
at
io.netty.handler.codec.ByteToMessageCodec.channelRead(ByteToMessageCodec.java:103)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.handler.logging.LoggingHandler.channelRead(LoggingHandler.java:280)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
org.apache.plc4x.java.s7.readwrite.protocol.S7HMuxImpl.decode(S7HMuxImpl.java:145)
at
org.apache.plc4x.java.s7.readwrite.protocol.S7HMuxImpl.decode(S7HMuxImpl.java:1)
at
io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
at
io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
at
io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
at
io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.NullPointerException: Cannot invoke
"org.apache.plc4x.java.s7.readwrite.S7Message.getParameter()" because "s7msg"
is null
at
org.apache.plc4x.java.s7.readwrite.protocol.S7ProtocolLogic.decode(S7ProtocolLogic.java:1477)
at
org.apache.plc4x.java.s7.readwrite.protocol.S7ProtocolLogic.decode(S7ProtocolLogic.java:1)
at
org.apache.plc4x.java.spi.Plc4xNettyWrapper.decode(Plc4xNettyWrapper.java:190)
at
io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
... 40 common frames omitted
```
Log output produced with test code in version v0.11.0 (the same test code
works perfectly in version v0.11.0).
```
INFO o.a.p.java.DefaultPlcDriverManager - Instantiating new PLC Driver
Manager with class loader
jdk.internal.loader.ClassLoaders$AppClassLoader@76ed5528
INFO o.a.p.java.DefaultPlcDriverManager - Registering available drivers...
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
s7 (Siemens S7 (Basic))
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
plc4x (PLC4X (Proxy-Protocol))
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
mock (Mock Protocol Implementation)
INFO o.a.p.java.DefaultPlcDriverManager - Registering driver for Protocol
simulated (Simulated PLC4X Datasource)
INFO o.a.p.j.t.tcp.TcpChannelFactory - Configuring Bootstrap with
Configuration{local-rack=1, local-slot=1, local-tsap=0, remote-rack=0,
remote-slot=1, remote-rack2=0, remote-slot2=0, remote-tsap=0, pduSize=1024,
maxAmqCaller=8, maxAmqCallee=8, controllerType=null, readTimeOut=8, ping=false,
pingTime=-1, retryTime=4}
INFO o.a.p.j.s.r.protocol.S7ProtocolLogic - S7 Driver running in ACTIVE
mode.
INFO o.a.p.j.s.r.connection.S7HMuxImpl - 15:13:32.255891
userEventTriggered: S7HMuxImpl#0 Event:
org.apache.plc4x.java.spi.events.ConnectEvent@7da10b5b
INFO o.a.p.j.s.r.connection.S7HMuxImpl - java.util.NoSuchElementException:
watchdog
INFO o.a.p.j.s.r.connection.S7HMuxImpl - 15:13:33.318472100
userEventTriggered: S7HMuxImpl#0 Event:
org.apache.plc4x.java.spi.events.ConnectedEvent@1a5e2b89
INFO o.a.p.j.s.r.connection.S7HMuxImpl - 15:13:33.353959900
userEventTriggered: S7HMuxImpl#0 Event:
org.apache.plc4x.java.spi.events.DisconnectEvent@352e612e
INFO o.a.p.j.s.r.connection.S7HMuxImpl - DisconnectEvent
```
### Version
v0.12.0
### Programming Languages
- [X] plc4j
- [ ] plc4go
- [ ] plc4c
- [ ] plc4net
### Protocols
- [ ] AB-Ethernet
- [ ] ADS /AMS
- [ ] BACnet/IP
- [ ] CANopen
- [ ] DeltaV
- [ ] DF1
- [ ] EtherNet/IP
- [ ] Firmata
- [ ] KNXnet/IP
- [ ] Modbus
- [ ] OPC-UA
- [X] S7
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