https://bz.apache.org/bugzilla/show_bug.cgi?id=66455
Bug ID: 66455
Summary: ava.lang.ClassCastException: class
org.apache.coyote.http2.RecycledStream cannot be cast
to class org.apache.coyote.http2.Stream
Product: Tomcat 9
Version: 9.0.71
Hardware: PC
OS: Linux
Status: NEW
Severity: major
Priority: P2
Component: Connectors
Assignee: dev@tomcat.apache.org
Reporter: boris_pet...@live.com
Target Milestone: -----
Today I saw some ClassCastExceptions in my logs:
java.lang.ClassCastException: class org.apache.coyote.http2.RecycledStream
cannot be cast to class org.apache.coyote.http2.Stream
(org.apache.coyote.http2.RecycledStream and org.apache.coyote.http2.Stream are
in unnamed module of loader java.net.URLClassLoader @2a742aa2)
at
org.apache.coyote.http2.Http2UpgradeHandler.incrementWindowSize(Http2UpgradeHandler.java:1031)
at
org.apache.coyote.http2.Http2UpgradeHandler.incrementWindowSize(Http2UpgradeHandler.java:1879)
at
org.apache.coyote.http2.Http2AsyncUpgradeHandler.incrementWindowSize(Http2AsyncUpgradeHandler.java:41)
at
org.apache.coyote.http2.Http2Parser.readWindowUpdateFrame(Http2Parser.java:449)
at
org.apache.coyote.http2.Http2AsyncParser$FrameCompletionHandler.completed(Http2AsyncParser.java:274)
at
org.apache.coyote.http2.Http2AsyncParser$FrameCompletionHandler.completed(Http2AsyncParser.java:166)
at
org.apache.tomcat.util.net.SocketWrapperBase$VectoredIOCompletionHandler.completed(SocketWrapperBase.java:1122)
at
org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper$NioOperationState.run(NioEndpoint.java:1697)
at
org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at
org.apache.tomcat.util.threads.ThreadPoolExecutor$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:1589)
I'm not sure why that happens but it seems like a bug in Tomcat.
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