Bruce Hamilton created HTTPCORE-764:
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Summary: Apparent infinite loop in SSLIOSession
Key: HTTPCORE-764
URL: https://issues.apache.org/jira/browse/HTTPCORE-764
Project: HttpComponents HttpCore
Issue Type: Bug
Components: HttpCore NIO
Affects Versions: 4.4.15
Reporter: Bruce Hamilton
Using the apache http async client 4.1.5, we are making calls to the Open AI
server-side streaming endpoint. After some period of making requests (an hour
or so), the service will hit 100% CPU and invariably the client will invariably
be stuck in the same spot in the SSLIOSession class, trying to complete the
handshake.
We believe the server is dropping connections during the TLS handshake, which
manifests as connection timeouts in other clients. This seems to happen for
both TLS 1.2 and 1.3, and I can see there's been some closely related issues in
the past regarding this loop.
Here is the stack trace from the thread dump:
"Ktor-client-apache (server): llm-" #53 daemon prio=5 os_prio=0
cpu=20726438.17ms elapsed=62011.90s tid=0x00007f7f28074010 nid=0x41 runnable
[0x00007f7e934fd000]
java.lang.Thread.State: RUNNABLE
at sun.security.ssl.SSLEngineImpl.wrap(java.base@17.0.8/SSLEngineImpl.java:123)
at javax.net.ssl.SSLEngine.wrap(java.base@17.0.8/SSLEngine.java:524)
at org.apache.http.nio.reactor.ssl.SSLIOSession.doWrap(SSLIOSession.java:270)
at
org.apache.http.nio.reactor.ssl.SSLIOSession.doHandshake(SSLIOSession.java:316)
at
org.apache.http.nio.reactor.ssl.SSLIOSession.isAppInputReady(SSLIOSession.java:547)
- locked <0x00000000f7e699b0> (a org.apache.http.nio.reactor.ssl.SSLIOSession)
at
org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:120)
at
org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:162)
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:337)
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315)
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:276)
at
org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
at
org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:591)
at java.lang.Thread.run(java.base@17.0.8/Thread.java:833)
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