0006445: java.lang.IllegalStateException: TcpSocketLink[id=http://...someports...] killKeepalive called from invalid thread

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Category

Severity

Reproducibility

Date Submitted

Last Update

0006445

[Resin]

minor

always

10-26-21 07:05

12-16-21 07:35

Reporter

amo

View Status

public

Assigned To

Priority

normal

Resolution

open

Status

new

Product Version

4.0.65

Summary

0006445: java.lang.IllegalStateException: TcpSocketLink[id=http://...someports...] killKeepalive called from invalid thread

Description

We have some web code that looks something like:

generateContent(){
final AsyncContext asyncContext = request.startAsync();
requestContent(params, callback(asyncConext))
}

callback(){
onData() -> writer.writeNext() -> writer.checkError ---> ResponseStream.flush()
}

meanwhile:
at com.caucho.server.http.AbstractHttpRequest.clientDisconnect(AbstractHttpRequest.java:459)
at com.caucho.server.http.AbstractHttpResponse.clientDisconnect(AbstractHttpResponse.java:211)

We believe this now has a wrong/bad state because we think the client disconnected while we were getting the data they wanted so calling:

state.isAsyncStarted() returns false always in this case and throws the exception on: TcpSocketLink.java:1612)

Thanks

Amo

Additional Information

Here's a stack trace:

java.lang.IllegalStateException: killKeepalive called from invalid thread. expected:
at com.caucho.network.listen.TcpSocketLink.killKeepalive(TcpSocketLink.java:1612)
at com.caucho.server.http.AbstractHttpRequest.killKeepalive(AbstractHttpRequest.java:1773)
at com.caucho.server.http.AbstractHttpRequest.clientDisconnect(AbstractHttpRequest.java:459)
at com.caucho.server.http.AbstractHttpResponse.clientDisconnect(AbstractHttpResponse.java:211)
at com.caucho.server.http.ResponseStream.writeNextBuffer(ResponseStream.java:900)
at com.caucho.server.http.ResponseStream.flush(ResponseStream.java:589)
at com.caucho.server.http.ResponseStream.flushChar(ResponseStream.java:614)
at com.caucho.server.http.ResponseWriter.flush(ResponseWriter.java:176)
at java.base/java.io.PrintWriter.flush(PrintWriter.java:396)
at java.base/java.io.PrintWriter.checkError(PrintWriter.java:433)
...some of our code calling this...

Attached Files

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Notes
(0007005) nam 11-16-21 13:20	1. how often does this happen? 2. can you send some sample threading details (XXX, YYY, ZZZ) for the exception message below? "java.lang.IllegalStateException: XXX killKeepalive called from invalid thread. expected: YYY actual ZZZ" 3. you can log the disconnects by adding FINEST logging to package: com.caucho.network.listen

(0007023) amo 12-16-21 07:35	1. very rare occurrences 2. TcpSocketLink[xx, ACCEPT] killKeepalive called from invalid thread. expected: Thread[resin-port] actual: Thread[lmax service thread]

Issue History
Date Modified	Username	Field	Change
10-26-21 07:05	amo	New Issue
11-16-21 13:20	nam	Note Added: 0007005
12-16-21 07:35	amo	Note Added: 0007023

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