Could be related to 6423396, but that was marked as fixed in b86. This is still occuring as of b02 in jdk7. I don't know whether this is a problem in the test or the JDK. Am filing a new bug. Windows-i586 only.

TEST: com\sun\net\httpserver\bugs\B6373555.java
JDK under test: (c:/otto/jdk7/nightlies/ws/control/build/windows-i586/j2sdk-imag
e)
java version "1.7.0-internal"
Java(TM) SE Runtime Environment (build 1.7.0-internal-b99)
Java HotSpot(TM) Client VM (build 1.7.0-ea-b02, mixed mode)

ACTION: build -- Passed. Compilation successful
REASON: Named class compiled on demand
TIME: 1.844 seconds

ACTION: compile -- Passed. Compilation successful
REASON: .class file out of date or does not exist
TIME: 1.844 seconds
STDOUT:
STDERR:

ACTION: main -- Failed. Execution failed: `main' threw exception: java.lang.Exce
ption: error in test
REASON: Assumed action based on file name: run main B6373555
TIME: 13.531 seconds
STDOUT:
Main thread waiting
Received=1000
sent=1000
Received=1000
Received=2000
sent=2000
Received=2000
Received=3000
sent=3000
Received=3000
................................................................................
................................................................................
.....................................................
STDERR:
java.lang.Exception: error in test
        at B6373555.main(B6373555.java:54)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:
83)
        at java.lang.Thread.run(Thread.java:619)

JavaTest Message: Test threw exception: java.lang.Exception: error in test
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.Exception: error in test

TEST RESULT: Failed. Execution failed: `main' threw exception: java.lang.Excepti
on: error in test