What's "to=3573072/3600000" means in the exception of java.io.EOFException: HttpConne-CodePudding

One of my application gets the following exception from time to time when making HTTP calls. What's to=3573072/3600000? What may cause the error?

ERROR ProxyRequestTracker - event=RequestCompleted, closure=Error, errorType=proxyResponse, method=GET, agent=Geneos/GA5.6.0-210208 (Netprobe - WEB-MON), targetHost=d12d.elb.us-east-1.amazonaws.com, targetPath=, actMs=3, jwtMs=3, totalMs=14
java.io.EOFException: HttpConnectionOverHTTP@666edd5::DecryptedEndPoint@6aca4ca{d12d.elb.us-east-1.amazonaws.com/28.13.2.2:443/22.249.3.154:52302,OPEN,fill=-,flush=-,to=3573072/3600000}
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.earlyEOF(HttpReceiverOverHTTP.java:345)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:1595)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.shutdown(HttpReceiverOverHTTP.java:237)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.process(HttpReceiverOverHTTP.java:176)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.receive(HttpReceiverOverHTTP.java:75)
    at org.eclipse.jetty.client.http.HttpChannelOverHTTP.receive(HttpChannelOverHTTP.java:133)
    at org.eclipse.jetty.client.http.HttpConnectionOverHTTP.onFillable(HttpConnectionOverHTTP.java:156)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:543)
    at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:398)
    at org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:161)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
    at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:388)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)
    at java.lang.Thread.run(Thread.java:748)

CodePudding user response：

to=3573072/3600000

This is timeout=<current>/<configured>

So you have a timeout configured for 3,600,000 ms (1 hour).

The current timeout is at 3,573,072 ms.

So in about 26.9 seconds that connection will timeout if nothing happens on the connection (read or write).

The java.io.EOFException is telling you the connection was terminated, but you have to look at the logs around this connection line (before and possible after) to know more details on possible how/why the connection was closed.