kdxq opened a new issue, #849:
URL: https://github.com/apache/plc4x/issues/849
### What happened?
Hi, @chrisdutz, I plan to use the plc4x proxy mode, but I encountered an
error during the testing process. When this error occurs several times, it will
be automatically interrupted.detail information as follow. thank you very much!
plc4x-server just start your program. and
plc4x-driver code adn error info. as follow. and the driver can received the
data from server.
-----------------------------------------------------------------
public static void main(String[] args) throws Exception {
new Thread(() -> {
while (true) {
FetchTask();
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}).start();
}
private static void FetchTask(){
String c_string
="plc4x://192.168.43.122?remote-connection-string=s7%3A%2F%2F10.32.137.171?remote-rack=0&remote-slot=3";
PlcDriverManager manager = new PlcDriverManager();
try (final PlcConnection connection
=manager.getConnection(c_string)) {
final PlcReadRequest.Builder requestBuilder =
connection.readRequestBuilder();
requestBuilder.addItem("Seg1_Cy1_Act_Power",
"%DB101.DBD456:REAL");
final PlcReadRequest readRequest = requestBuilder.build();
final PlcReadResponse readResponse = readRequest.execute().get();
float seg1Cy1ActPower =
readResponse.getPlcValue("Seg1_Cy1_Act_Power").getFloat();
// System.out.println("abc "+ seg1Cy1ActPower);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
ERROR INFO AS FOLLOW:
------------------------------------------------------------------
Mar 17, 2023 11:34:28 AM io.netty.channel.DefaultChannelPipeline
onUnhandledInboundException
WARNING: 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.handler.codec.DecoderException: java.lang.IllegalArgumentException:
Unknown Transaction or Transaction already finished!
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:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at
io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:336)
at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:308)
at
io.netty.handler.codec.ByteToMessageCodec.channelRead(ByteToMessageCodec.java:103)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at
io.netty.channel.nio.AbstractNioByteChannel$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.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Unknown Transaction or
Transaction already finished!
at
org.apache.plc4x.java.spi.transaction.RequestTransactionManager.endRequest(RequestTransactionManager.java:129)
at
org.apache.plc4x.java.spi.transaction.RequestTransactionManager.access$200(RequestTransactionManager.java:46)
at
org.apache.plc4x.java.spi.transaction.RequestTransactionManager$RequestTransaction.endRequest(RequestTransactionManager.java:160)
at
org.apache.plc4x.java.plc4x.protocol.Plc4xProtocolLogic.lambda$read$7(Plc4xProtocolLogic.java:126)
at
org.apache.plc4x.java.spi.Plc4xNettyWrapper.decode(Plc4xNettyWrapper.java:187)
at
io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
... 23 more
### Version
v.0.10.0
### 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
- [ ] S7
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