Bug 64478 - org.apache.coyote.http11.Http11Processor.service Error parsing HTTP request header
Summary: org.apache.coyote.http11.Http11Processor.service Error parsing HTTP request h...
Status: RESOLVED INVALID
Alias: None
Product: Tomcat 9
Classification: Unclassified
Component: Connectors (show other bugs)
Version: 9.0.35
Hardware: Other Linux
: P2 blocker (vote)
Target Milestone: -----
Assignee: Tomcat Developers Mailing List
URL:
Keywords:
: 64770 (view as bug list)
Depends on:
Blocks:
 
Reported: 2020-05-28 10:13 UTC by Md. Adnan Rashidul Islam
Modified: 2020-09-28 08:09 UTC (History)
3 users (show)


Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Md. Adnan Rashidul Islam 2020-05-28 10:13:44 UTC 
With the Tomcat version 9.0.35, the following error occurs without deploying any custom application,

28-May-2020 06:08:44.960 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardServer[8005]] to [INITIALIZING]
28-May-2020 06:08:44.963 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version name:   Apache Tomcat/9.0.35
28-May-2020 06:08:44.963 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built:          May 5 2020 20:36:20 UTC
28-May-2020 06:08:44.963 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version number: 9.0.35.0
28-May-2020 06:08:44.963 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:               Linux
28-May-2020 06:08:44.963 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:            4.1.12-124.38.1.el6uek.x86_64
28-May-2020 06:08:44.963 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture:          amd64
28-May-2020 06:08:44.963 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home:             /usr/local/jdk/jre
28-May-2020 06:08:44.963 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           1.8.0_251-b08
28-May-2020 06:08:44.964 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:            Oracle Corporation
28-May-2020 06:08:44.964 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE:         /home/tomcat/test1/apache-tomcat-9.0.35
28-May-2020 06:08:44.964 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME:         /home/tomcat/test1/apache-tomcat-9.0.35
28-May-2020 06:08:44.964 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/home/tomcat/test1/apache-tomcat-9
.0.35/conf/logging.properties
28-May-2020 06:08:44.964 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
28-May-2020 06:08:44.964 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
28-May-2020 06:08:44.964 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
28-May-2020 06:08:44.964 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dorg.apache.catalina.security.SecurityListener.UMASK=0027
28-May-2020 06:08:44.964 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dignore.endorsed.dirs=
28-May-2020 06:08:44.965 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/home/tomcat/test1/apache-tomcat-9.0.35
28-May-2020 06:08:44.965 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/home/tomcat/test1/apache-tomcat-9.0.35
28-May-2020 06:08:44.965 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/home/tomcat/test1/apache-tomcat-9.0.35/temp
28-May-2020 06:08:44.965 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent The Apache Tomcat Native library which allows using OpenSSL was not found on the j
ava.library.path: [/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib]
28-May-2020 06:08:45.213 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [org.apache.catalina.deploy.NamingResourcesImpl@3c0f93f1] to [INITIAL
IZING]
28-May-2020 06:08:45.215 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [org.apache.catalina.deploy.NamingResourcesImpl@3c0f93f1] to [INITIAL
IZED]
28-May-2020 06:08:45.229 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardService[Catalina]] to [INITIALIZING]
28-May-2020 06:08:45.230 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngine[Catalina]] to [INITIALIZING]
28-May-2020 06:08:45.231 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngine[Catalina]] to [INITIALIZED]
28-May-2020 06:08:45.231 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [org.apache.catalina.mapper.MapperListener@6fc6f14e] to [INITIALIZING
]
28-May-2020 06:08:45.234 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [org.apache.catalina.mapper.MapperListener@6fc6f14e] to [INITIALIZED]
28-May-2020 06:08:45.234 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [Connector[HTTP/1.1-8080]] to [INITIALIZING]
28-May-2020 06:08:45.238 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
28-May-2020 06:08:45.257 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [Connector[HTTP/1.1-8080]] to [INITIALIZED]
28-May-2020 06:08:45.257 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardService[Catalina]] to [INITIALIZED]
28-May-2020 06:08:45.257 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardServer[8005]] to [INITIALIZED]
28-May-2020 06:08:45.258 INFO [main] org.apache.catalina.startup.Catalina.load Server initialization in [441] milliseconds
28-May-2020 06:08:45.258 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardServer[8005]] to [STARTING_PREP]
28-May-2020 06:08:45.264 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardServer[8005]] to [STARTING]
28-May-2020 06:08:45.277 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [org.apache.catalina.deploy.NamingResourcesImpl@3c0f93f1] to [STARTIN
G_PREP]
28-May-2020 06:08:45.277 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [org.apache.catalina.deploy.NamingResourcesImpl@3c0f93f1] to [STARTIN
G]
28-May-2020 06:08:45.277 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [org.apache.catalina.deploy.NamingResourcesImpl@3c0f93f1] to [STARTED
]
28-May-2020 06:08:45.277 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardService[Catalina]] to [STARTING_PREP]
28-May-2020 06:08:45.277 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]
28-May-2020 06:08:45.277 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardService[Catalina]] to [STARTING]
28-May-2020 06:08:45.277 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngine[Catalina]] to [STARTING_PREP]
28-May-2020 06:08:45.277 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet engine: [Apache Tomcat/9.0.35]
28-May-2020 06:08:45.278 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [LockOutRealm[StandardEngine[Catalina]]] to [INITIALIZING]
28-May-2020 06:08:45.278 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [LockOutRealm[StandardEngine[Catalina]]] to [INITIALIZED]
28-May-2020 06:08:45.278 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [LockOutRealm[StandardEngine[Catalina]]] to [STARTING_PREP]
28-May-2020 06:08:45.279 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [UserDatabaseRealm[StandardEngine[Catalina]]] to [INITIALIZING]
28-May-2020 06:08:45.279 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [UserDatabaseRealm[StandardEngine[Catalina]]] to [INITIALIZED]
28-May-2020 06:08:45.279 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [UserDatabaseRealm[StandardEngine[Catalina]]] to [STARTING_PREP]
28-May-2020 06:08:45.280 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [UserDatabaseRealm[StandardEngine[Catalina]]] to [STARTING]
28-May-2020 06:08:45.280 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [UserDatabaseRealm[StandardEngine[Catalina]]] to [STARTED]
28-May-2020 06:08:45.280 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [LockOutRealm[StandardEngine[Catalina]]] to [STARTING]
28-May-2020 06:08:45.280 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [LockOutRealm[StandardEngine[Catalina]]] to [STARTED]
28-May-2020 06:08:45.281 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngine[Catalina].StandardHost[localhost]] to [INITIALIZING]
28-May-2020 06:08:45.281 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngine[Catalina].StandardHost[localhost]] to [INITIALIZED]
28-May-2020 06:08:45.281 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngine[Catalina].StandardHost[localhost]] to [STARTING_PREP]
28-May-2020 06:08:45.284 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardPipeline[StandardEngine[Catalina].StandardHost[localhost]]] to [INITIALIZING]
28-May-2020 06:08:45.284 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardPipeline[StandardEngine[Catalina].StandardHost[localhost]]] to [INITIALIZED]
28-May-2020 06:08:45.284 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardPipeline[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTING_PREP]
28-May-2020 06:08:45.284 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [AccessLogValve[StandardEngine[Catalina].StandardHost[localhost]]] to [INITIALIZING]
28-May-2020 06:08:45.284 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [AccessLogValve[StandardEngine[Catalina].StandardHost[localhost]]] to [INITIALIZED]
28-May-2020 06:08:45.284 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [AccessLogValve[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTING_PREP]
28-May-2020 06:08:45.285 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [AccessLogValve[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTING]
28-May-2020 06:08:45.285 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [AccessLogValve[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTED]
28-May-2020 06:08:45.285 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [ErrorReportValve[StandardEngine[Catalina].StandardHost[localhost]]] to [INITIALIZING]
28-May-2020 06:08:45.285 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [ErrorReportValve[StandardEngine[Catalina].StandardHost[localhost]]] to [INITIALIZED]
28-May-2020 06:08:45.286 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [ErrorReportValve[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTING_PREP]
28-May-2020 06:08:45.286 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [ErrorReportValve[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTING]
28-May-2020 06:08:45.286 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [ErrorReportValve[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTED]
28-May-2020 06:08:45.286 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardHostValve[StandardEngine[Catalina].StandardHost[localhost]]] to [INITIALIZING]
28-May-2020 06:08:45.286 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardHostValve[StandardEngine[Catalina].StandardHost[localhost]]] to [INITIALIZED]
28-May-2020 06:08:45.286 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardHostValve[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTING_PREP]
28-May-2020 06:08:45.286 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardHostValve[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTING]
28-May-2020 06:08:45.286 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardHostValve[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTED]
28-May-2020 06:08:45.286 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardPipeline[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTING]
28-May-2020 06:08:45.287 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardPipeline[StandardEngine[Catalina].StandardHost[localhost]]] to [STARTED]
28-May-2020 06:08:45.287 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngine[Catalina].StandardHost[localhost]] to [STARTING]
28-May-2020 06:08:45.287 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngine[Catalina].StandardHost[localhost]] to [STARTED]
28-May-2020 06:08:45.287 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardPipeline[StandardEngine[Catalina]]] to [INITIALIZING]
28-May-2020 06:08:45.287 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardPipeline[StandardEngine[Catalina]]] to [INITIALIZED]
28-May-2020 06:08:45.287 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardPipeline[StandardEngine[Catalina]]] to [STARTING_PREP]
28-May-2020 06:08:45.287 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngineValve[StandardEngine[Catalina]]] to [INITIALIZING]
28-May-2020 06:08:45.287 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngineValve[StandardEngine[Catalina]]] to [INITIALIZED]
28-May-2020 06:08:45.288 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngineValve[StandardEngine[Catalina]]] to [STARTING_PREP]
28-May-2020 06:08:45.288 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngineValve[StandardEngine[Catalina]]] to [STARTING]
28-May-2020 06:08:45.288 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngineValve[StandardEngine[Catalina]]] to [STARTED]
28-May-2020 06:08:45.288 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardPipeline[StandardEngine[Catalina]]] to [STARTING]
28-May-2020 06:08:45.288 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardPipeline[StandardEngine[Catalina]]] to [STARTED]
28-May-2020 06:08:45.288 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngine[Catalina]] to [STARTING]
28-May-2020 06:08:45.290 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardEngine[Catalina]] to [STARTED]
28-May-2020 06:08:45.290 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [org.apache.catalina.mapper.MapperListener@6fc6f14e] to [STARTING_PREP]
28-May-2020 06:08:45.290 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [org.apache.catalina.mapper.MapperListener@6fc6f14e] to [STARTING]
28-May-2020 06:08:45.291 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [org.apache.catalina.mapper.MapperListener@6fc6f14e] to [STARTED]
28-May-2020 06:08:45.291 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [Connector[HTTP/1.1-8080]] to [STARTING_PREP]
28-May-2020 06:08:45.291 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [Connector[HTTP/1.1-8080]] to [STARTING]
28-May-2020 06:08:45.291 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
28-May-2020 06:08:45.309 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [Connector[HTTP/1.1-8080]] to [STARTED]
28-May-2020 06:08:45.309 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardService[Catalina]] to [STARTED]
28-May-2020 06:08:45.309 FINE [main] org.apache.catalina.util.LifecycleBase.setStateInternal Setting state for [StandardServer[8005]] to [STARTED]
28-May-2020 06:08:45.310 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in [51] milliseconds
28-May-2020 06:08:46.094 INFO [http-nio-8080-exec-1] org.apache.coyote.http11.Http11Processor.service Error parsing HTTP request header
 Note: further occurrences of HTTP request parsing errors will be logged at DEBUG level.
        java.lang.IllegalStateException: Invalid request line parse phase [6]
                at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:579)
                at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:260)
                at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
                at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
                at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
                at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
                at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
                at java.lang.Thread.run(Thread.java:748)
Comment 1 mgrigorov 2020-05-28 12:33:23 UTC 
What kind of request do you make against Tomcat ?
What headers are in the request ?

The provided information is not enough to investigate any kind of problem.
You better ask for help at users@tomcat.apache.org
Comment 2 Mark Thomas 2020-05-28 14:06:38 UTC 
A client appears to have sent an HTTP/1.1 request without a protocol. It may have been trying to send an HTTP/0.9 request but it included a trailing " " (space) after the URI.

The users list is the place to seek additional help.
Comment 3 Md. Adnan Rashidul Islam 2020-05-28 14:59:04 UTC 
I have only start the Tomcat with all default settings and having now applications in /webapp. No external request is made. The error appears when it just starts. The other version i have checked (version 9.0.33) and there is no such error.
Comment 4 Mark Thomas 2020-05-28 15:21:29 UTC 
This behaviour is not observed in a clean 9.0.35 install. Something is creating the invalid request. Again, the users list is the place to seek help.
Comment 5 Md. Adnan Rashidul Islam 2020-05-29 15:45:32 UTC 
Hi Mark,

Thanks. We have resolved the issue. The http request has been sent by reverse proxy from HTTP/0.9 protocol with the tailing double pair of RCFL which is not supported by HTTP/1.1. So we have changed the RCFL and then it works. Thanks.
Comment 6 Mark Thomas 2020-05-29 15:59:55 UTC 
Glad to see you fixed your issue.

Restoring the correct status.
Comment 7 Deviduttapanda 2020-09-26 09:33:17 UTC 
Hi Md. Adnan Rashidul.

Need your support here, I am also facing the same issue as we are using Tomcat 9.0.36 behind F5 and F5 sendstring is GET /HealthInfo /r/n




(In reply to Md. Adnan Rashidul Islam from comment #5)
> Hi Mark,
> 
> Thanks. We have resolved the issue. The http request has been sent by
> reverse proxy from HTTP/0.9 protocol with the tailing double pair of RCFL
> which is not supported by HTTP/1.1. So we have changed the RCFL and then it
> works. Thanks.
Comment 8 Christopher Schultz 2020-09-26 15:55:03 UTC 
*** Bug 64770 has been marked as a duplicate of this bug. ***
Comment 9 Md. Adnan Rashidul Islam 2020-09-28 07:27:11 UTC 
Hi Deviduttapanda,

have you recently upgraded to Tomcat version 9.0.36? Is the issue occurred in the previous version? what was the previous version of Tomcat?

Thanks.

(In reply to Deviduttapanda from comment #7)
> Hi Md. Adnan Rashidul.
> 
> Need your support here, I am also facing the same issue as we are using
> Tomcat 9.0.36 behind F5 and F5 sendstring is GET /HealthInfo /r/n
> 
> 
> 
> 
> (In reply to Md. Adnan Rashidul Islam from comment #5)
> > Hi Mark,
> > 
> > Thanks. We have resolved the issue. The http request has been sent by
> > reverse proxy from HTTP/0.9 protocol with the tailing double pair of RCFL
> > which is not supported by HTTP/1.1. So we have changed the RCFL and then it
> > works. Thanks.
Comment 10 Deviduttapanda 2020-09-28 07:31:36 UTC 
Hi Adnan,
yes we have recently upgraded to Tomcat 9.0.36

the previous version was 9.0.29 and it was working fine.
Comment 11 Md. Adnan Rashidul Islam 2020-09-28 08:08:25 UTC 
Hi,

Please check the following,

01) Monitoring parent profile on LTM. Also you can check the send string on the parent profile. on the Parent profile the default should be GET /\r\n

02) Check if any extra space in the send string.

03) Additionally you can check if the correct output of /HealthInfo is set in the F5 monitoring (I assume it's already checked)

If the above steps are all good then you may look into F5 devcentral for specific F5 version's instruction.

Thanks,
Adnan
Comment 12 Md. Adnan Rashidul Islam 2020-09-28 08:09:31 UTC 
Hi,

Please check the following,

01) Monitoring parent profile on LTM. Also you can check the send string on the parent profile. on the Parent profile the default should be GET /\r\n

02) Check if any extra space in the send string.

03) Additionally you can check if the correct output of /HealthInfo is set in the F5 monitoring (I assume it's already checked)

If the above steps are all good then you may look into F5 devcentral for specific F5 version's instruction.

Thanks,
Adnan