Windows OS version?
IIS version?
ISAPI redirector version?
ISAPI redirector config?
AJP connector config?

Does this happen on all connections or just some connections?

Which version of Tomcat does this start with? You will need to perform a (I suggest binary) search from 9.0.89 to 9.0.108 to find out the last version this worked / the first version this failed.

Mark


On 03/09/2025 15:44, Boddapu, Ramdev wrote:
We have setup with IIS -> tomcat(9.0.89) with AJP , this works perfectly . But 
when we upgraded tomcat to 9.0.108 it is failing with below error .
03-Sep-2025 15:03:14.392 FINE [ajp-nio-0.0.0.0-8109-exec-4] 
org.apache.coyote.AbstractProcessor.setErrorState Error state 
[CLOSE_CONNECTION_NOW] reported while processing request
  java.io.EOFException
    at 
org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.fillReadBuffer(NioEndpoint.java:1385)
    at 
org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.fillReadBuffer(NioEndpoint.java:1336)
    at 
org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.read(NioEndpoint.java:1243)
    at org.apache.coyote.ajp.AjpProcessor.read(AjpProcessor.java:1194)
    at org.apache.coyote.ajp.AjpProcessor.readMessage(AjpProcessor.java:560)
    at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:349)
    at 
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
    at 
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:935)
    at 
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1826)
    at 
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
    at 
org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1189)
    at 
org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:658)
    at 
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
    at java.base/java.lang.Thread.run(Thread.java:834)


Thanks , any help is apricated .

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