Error reading request, ignored

[ahoehma]

Spring Boot Admin Server information

• Version:
  3.1.5

• Spring Boot version:
  3.1.3

• Configured Security:
  sba clients-with base auth
  sba server with openid based login

• Webflux or Servlet application:
  servlet

Client information

• Spring Boot versions:
  3.1.3

• Used discovery mechanism:
  self registration

• Webflux or Servlet application:
  servlet

Description

I see periodically this in my sba server log:

2023-09-01 08:59:09 http-nio-5000-exec-6 ERROR - [] - org.apache.coyote.http11.Http11NioProtocol:175 - Error reading request, ignored
java.lang.NullPointerException: Cannot invoke "org.apache.catalina.Context.decrementInProgressAsyncCount()" because "this.context" is null
at org.apache.catalina.core.AsyncContextImpl.decrementInProgressAsyncCount(AsyncContextImpl.java:441)
at org.apache.coyote.AsyncStateMachine.asyncPostProcess(AsyncStateMachine.java:295)
at org.apache.coyote.AbstractProcessor.asyncPostProcess(AbstractProcessor.java:197)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:78)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:894)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1740)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
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.base/java.lang.Thread.run(Thread.java:833)

[SteKoe]

Hi @ahoehma,

we have found the exact same issue in Tomcat’s Bugzilla: https://bz.apache.org/bugzilla/show_bug.cgi?id=67235 It seems that they have introduced a bug in their newest versions, when using Server Send Events, which Spring Boot Admin utilizes. If you do not face any issues in regards to usability / stability of your SBA installation, we will keep track of the issue at tomcat and merge a fix asap.

Regards
SteKoe