On 08/12/2023 09:27, Ivano Luberti wrote:
Il 07/12/2023 17:51, Mark Thomas ha scritto:
On 07/12/2023 15:37, Ivano Luberti wrote:
Hi, since a few days these errors started showing in my log files:
06-Dec-2023 07:39:56.082 INFO [http-nio-8080-exec-5826]
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.IllegalArgumentException: Request header is too large
at
org.apache.coyote.http11.Http11InputBuffer.fill(Http11InputBuffer.java:790)
at
org.apache.coyote.http11.Http11InputBuffer.parseHeader(Http11InputBuffer.java:975)
at
org.apache.coyote.http11.Http11InputBuffer.parseHeaders(Http11InputBuffer.java:604)
at
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:294)
at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)
at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at
org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at
org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:750)
I know I can increase the tolerated header size using sometjing like
this:
<Connector port="8080" maxHttpHeaderSize="65536" protocol="HTTP/1.1"
... />
Bu my question is how can i debug the issue?
For example: how can i find the page requested when the exception was
raised?
Match the timestamp in the logs with the timestamp in the access logs
of the associated 400 response.
Mark
Thank you Mark.
Finding the exception in log files led me to think there was noting in
the access log.
Is there any way to log the header content so I can find what is causing
the issue?
You can try enabling debug logging for
org.apache.coyote.http11.Http11InputBuffer
Mark
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