I use nightly build 20050617. This happen when I use a rate of 6 conn/sec (with 2 Soap requests). With 4 or less it didn't happen. It does not happen immediatly but after some tens of connections. The server is OC4J. The server does not seem to log these connections at all.
Created attachment 15471 [details] Test case
Created attachment 15472 [details] JMeter log I have trunked the end of the file because it was too large.
java.io.IOException: Stream closed at java.io.BufferedInputStream.ensureOpen(Unknown Source) at java.io.BufferedInputStream.read(Unknown Source) at java.io.FilterInputStream.read(Unknown Source) at org.apache.jmeter.protocol.http.sampler.HTTPSampler.readResponse(HTTPSampler.java:241) at org.apache.jmeter.protocol.http.sampler.HTTPSampler.sample(HTTPSampler.java:460) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:523) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:512) at org.apache.jmeter.protocol.http.sampler.SoapSampler.sample(SoapSampler.java:146) at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:254) at java.lang.Thread.run(Unknown Source)
Finally there is probably no bug in JMeter but on the server which close connections.
This issue has been migrated to GitHub: https://github.com/apache/jmeter/issues/1562