¿Qué significa “to=3573072/3600000” en la excepción de java.io.EOFException: HttpConnectionOverHTTP?

Uno de mis aplicaciones recibe la siguiente excepción de vez en cuando al hacer llamadas HTTP. ¿Qué significa “to=3573072/3600000”? ¿Qué podría estar causando el error?

ERROR ProxyRequestTracker - evento=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)