Re: [HAPI-devel] Verbose logging of connection errors - how to disable

[Tom C. <tc...@ex...>]

Ah ha, adding

System.setProperty("org.slf4j.simplelogger.log.ca.uhn.hl7v2.app.Receiver","error"); 


to our server impl. seems to do the trick.

Tom

On 17/11/2020 11:56, Tom Chiverton wrote:
> Hi,
>
> We've got a HL7 receiving application using HAPI, and all works well 
> except when our system health checking system connects, it is causing 
> spam to the log file.
>
> I was hoping that registering a hander with 
> 'server.setExceptionHandler(...)' would stop this, but I think the 
> reason it's not working is because the error is occurring earlier than 
> in our own ReceivingApplication implementation ?
>
> Should I be looking at the slf4j log configuration ? Or sub-class 
> ca.uhn.hl7v2.app.Receiver / ca.uhn.hl7v2.concurrent.Service ? Or is 
> there some setting I can change in the Context ?
>
> An example stack trace we'd like to suppress is below, after the line 
> from ca.uhn.hl7v2.app.Receiver. "New connection received" is from our 
> Server class's server.registerConnectionListener(...)
>
> 448905 [hapi-worker-1] INFO ca.uhn.hl7v2.app.SimpleServer - Accepted 
> connection from 192.168.4.250:23446 on local port 9007
> New connection received: /192.168.4.250
> 448906 [hapi-worker-5] WARN ca.uhn.hl7v2.app.Receiver - IOException: 
> closing Connection from 192.168.4.250:23446, will no longer read 
> messages with this Receiver.
> javax.net.ssl.SSLHandshakeException: Remote host terminated the handshake
>         at 
> java.base/sun.security.ssl.SSLSocketImpl.handleEOF(SSLSocketImpl.java:1588)
>         at 
> java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1416)
>         at 
> java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1314)
>         at 
> java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:440)
>         at 
> java.base/sun.security.ssl.SSLSocketImpl.ensureNegotiated(SSLSocketImpl.java:819)
>         at 
> java.base/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:910)
>         at 
> java.base/java.io.BufferedInputStream.fill(BufferedInputStream.java:252)
>         at 
> java.base/java.io.BufferedInputStream.read(BufferedInputStream.java:271)
>         at 
> ca.uhn.hl7v2.llp.MllpDecoderState.read(MllpDecoderState.java:128)
>         at ca.uhn.hl7v2.llp.MllpDecoder.getMessage(MllpDecoder.java:63)
>         at 
> ca.uhn.hl7v2.llp.Hl7DecoderReader.getMessage(Hl7DecoderReader.java:84)
>         at ca.uhn.hl7v2.llp.MinLLPReader.getMessage(MinLLPReader.java:33)
>         at ca.uhn.hl7v2.app.Receiver.handle(Receiver.java:63)
>         at ca.uhn.hl7v2.concurrent.Service.run(Service.java:205)
>         at 
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
>         at 
> java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
>         at 
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
>         at 
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
>         at java.base/java.lang.Thread.run(Thread.java:829)
> Caused by: java.io.EOFException: SSL peer shut down incorrectly
>         at 
> java.base/sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:481)
>         at 
> java.base/sun.security.ssl.SSLSocketInputRecord.readHeader(SSLSocketInputRecord.java:470)
>         at 
> java.base/sun.security.ssl.SSLSocketInputRecord.decode(SSLSocketInputRecord.java:160)
>         at 
> java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:110)
>         at 
> java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1408)
>         ... 17 more
> Lost connection from: /192.168.4.250
>
> Tom
>
>
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