https://bz.apache.org/bugzilla/show_bug.cgi?id=66530
Bug ID: 66530
Summary: ERR_HTTP2_SERVER_REFUSED_STREAM since 9.0.72
Product: Tomcat 9
Version: 9.0.72
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Connectors
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: -----
Hi team,
Since Tomcat 9.0.72 (also tested in 9.0.73) seems there is an issue related to
HTTP2 Protocol. We are using default values for HTTP2 protocol
<UpgradeProtocol className="org.apache.coyote.http2.Http2Protocol"/>
But since 9.0.72 version we receive randomly ERR_HTTP2_SERVER_REFUSED_STREAM
error messages for random static files (images, js, etc...)
org.apache.coyote.http2.Http2UpgradeHandler.upgradeDispatch Connection [0],
Stream [473] Closed due to error
Note: further occurrences of HTTP/2 stream errors will be logged at DEBUG
level.
org.apache.coyote.http2.StreamException: The client attempted to use
more than [100] active streams
at
org.apache.coyote.http2.Http2UpgradeHandler.headersEnd(Http2UpgradeHandler.java:1723)
at
org.apache.coyote.http2.Http2Parser.onHeadersComplete(Http2Parser.java:622)
at
org.apache.coyote.http2.Http2Parser.readHeadersFrame(Http2Parser.java:284)
at
org.apache.coyote.http2.Http2Parser.readFrame(Http2Parser.java:110)
at
org.apache.coyote.http2.Http2Parser.readFrame(Http2Parser.java:82)
at
org.apache.coyote.http2.Http2UpgradeHandler.upgradeDispatch(Http2UpgradeHandler.java:345)
at
org.apache.coyote.http11.upgrade.UpgradeProcessorInternal.dispatch(UpgradeProcessorInternal.java:60)
at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:57)
at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926)
at
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2156)
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.base/java.lang.Thread.run(Thread.java:829)
Error is quite clear. Basically we are using more streams that available. But
the problem is that we are not loading 100 files in the requests, but 20 or 30.
Based in docs we have increased the maxConcurrentStreams up to 400 with the
same result. So seems that streams are not being closed correctly.
As told, this issue only appeared in 9.0.72 and 9.0.73, but on on 9.0.71 and
below, so seems some issue caused by some change in version 9.0.72
It would be great if you wan take a look.
Thank you!
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