On 26.02.2020 14:30, dku...@ccilindia.co.in wrote:
Dear Team,
We are getting below error in catelina log while starting the tomcat.
26-Feb-2020 18:57:36.795 INFO [main]
org.apache.catalina.startup.Catalina.start Server startup in 21520 ms
26-Feb-2020 18:57:38.277 INFO [http-nio-443-exec-11]
org.apache.coyote.http11.AbstractHttp11Processor.process Error parsing
HTTP request header
Note: further occurrences of HTTP header parsing errors will be logged at
DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in the
request target. The valid characters are defined in RFC 7230 and RFC 3986
at
org.apache.coyote.http11.AbstractNioInputBuffer.parseRequestLine(AbstractNioInputBuffer.java:283)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1017)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1524)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1480)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$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)
Will this impact any performance of our tomcat.
It is not quite clear what you mean by that question.
Origin of the above :
- a HTTP client sent an invalid HTTP request to your tomcat
- tomcat caught this, refused the request, and warned you of it by writing a detailed
error message to the logfile
- tomcat also tells you that if there are any further errors of the same type, you will
only see them in the logfile, if you turn the general log level of tomcat to "debug"
(which produces *a lot* of messages). That is tomcat's way of saving resources, in case
there are many more requests of that kind.
Will this impact the performance of tomcat ?
Well, of course, if your tomcat continues to receive a lot of such invalid requests all
the time, that will use some of the processing time of the tomcat host, even to return an
error to the client. But this has nothing to do with your tomcat per se or its
configuration, it has to do with bad or malicious clients out there, which send invalid
requests to your server, and it would be the same with any webserver.
If you want to filter out such requests before they arrive to tomcat, you will have to put
in front of tomcat some specialised filtering device which is optimised to do that kind of
thing.
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