AssertionError in MemoryEndPointPipe.MemoryEndPoint.fill()

[marchof]

Jetty version(s)

12.0.16

Jetty Environment

core

Java version/vendor (use: java -version)

openjdk 21.0.7 2025-04-15 LTS
OpenJDK Runtime Environment Temurin-21.0.7+6 (build 21.0.7+6-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.7+6 (build 21.0.7+6-LTS, mixed mode, sharing)

OS type/version

MacOS 15.1.1

Description

When testing org.eclipse.jetty.io.MemoryEndPointPipe as an in-memory backend for org.eclipse.jetty.client.HttpClient we encounter an AssertionError when the received body is > 16k:

java.lang.AssertionError
at org.eclipse.jetty.io.MemoryEndPointPipe$MemoryEndPoint.fill(MemoryEndPointPipe.java:178)
at org.eclipse.jetty.client.transport.internal.HttpReceiverOverHTTP.parseAndFill(HttpReceiverOverHTTP.java:272)
at org.eclipse.jetty.client.transport.internal.HttpReceiverOverHTTP.read(HttpReceiverOverHTTP.java:125)
at org.eclipse.jetty.client.transport.HttpReceiver$ContentSource.read(HttpReceiver.java:694)
at org.eclipse.jetty.client.Response$AsyncContentListener.onContentSource(Response.java:183)
at org.eclipse.jetty.client.transport.ResponseListeners.notifyContentSource(ResponseListeners.java:242)
at org.eclipse.jetty.client.transport.ResponseListeners.notifyContentSource(ResponseListeners.java:214)
at org.eclipse.jetty.client.transport.HttpReceiver.lambda$responseHeaders$2(HttpReceiver.java:310)
at org.eclipse.jetty.util.thread.SerializedInvoker$Link.run(SerializedInvoker.java:268)
at org.eclipse.jetty.util.thread.SerializedInvoker.run(SerializedInvoker.java:168)
at org.eclipse.jetty.client.transport.HttpReceiver.responseHeaders(HttpReceiver.java:243)
at org.eclipse.jetty.client.transport.internal.HttpReceiverOverHTTP.lambda$headerComplete$2(HttpReceiverOverHTTP.java:435)
at org.eclipse.jetty.client.transport.internal.HttpReceiverOverHTTP.parse(HttpReceiverOverHTTP.java:320)
at org.eclipse.jetty.client.transport.internal.HttpReceiverOverHTTP.parseAndFill(HttpReceiverOverHTTP.java:250)
at org.eclipse.jetty.client.transport.internal.HttpReceiverOverHTTP.receive(HttpReceiverOverHTTP.java:76)
at org.eclipse.jetty.client.transport.internal.HttpChannelOverHTTP.receive(HttpChannelOverHTTP.java:97)
at org.eclipse.jetty.client.transport.internal.HttpConnectionOverHTTP.onFillable(HttpConnectionOverHTTP.java:207)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:322)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:99)
at org.eclipse.jetty.io.MemoryEndPointPipe$FillableTask.run(MemoryEndPointPipe.java:290)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:979)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1209)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1164)
at java.base/java.lang.Thread.run(Thread.java:1583)

How to reproduce?

[marchof]

Additional information: When I disable assertions on the JVM the HTTP request is not finished (hangs forever).

[sbordet]

@marchof can you try PR #13443 and report back if it fixed the problem for you?

[marchof]

@sbordet I can confirm that the branch fixes the issue: Large bodies (like 4 Mbyte) are now transferred without any error (also with the -ea JVM option). Thanks!!!

[sbordet]

Fixed in #13443.