Regis wrote:
Jim Yu wrote:
2009/2/12 Regis <[email protected]>
Jim Yu wrote:
Hi Regis,
I reproduced this failure on my Linux platform. Since the specs
says SO_REUSEADDR "is used only
for MulticastSockets in java, and it is set by default for
MulticastSockets." So as you said, the default value
I can't find this statement in specs. And at:
You can find the statement in the spec from the description for
SO_REUSEADDR
field of SocketOptions. .
Thanks. That really confuse me :( Maybe spec's bug?
http://java.sun.com/j2se/1.5.0/docs/api/java/net/ServerSocket.html#setReuseAddress(boolean)
it says "Enabling SO_REUSEADDR prior to binding the socket using
bind(SocketAddress) allows the socket to be bound even though a previous
connection is in a timeout state. " and it really affect behaviors of
bind.
for SO_REUSEADDR in ServerSocket which is not defined is reasonable.
IMO,
it
is a non-bug difference between
Harmony and RI.
I incline to follow RI. Because there are already lots of code
depends on
RI's behaviors: create a new ServerSocket which reuse address
default, no
need to set it explicit.
If Harmony set the default value to false, many applications may not be
able to bind address correctly.
The spec says "the initial setting of SO_REUSEADDR is not defined."
However, it sounds reasonable to follow RI.
I will raise JIRA to trace this.
The JIRA is at:
https://issues.apache.org/jira/browse/HARMONY-6090
2009/1/23 Regis <[email protected]>
did anyone notice the failures on linux? or it just happen on my local
env?
junit.framework.AssertionFailedError: Unexpected exception when
setReuseAddress is the default case and we
bind:Harmony-L3NEK37/127.0.0.1:55891:java.net.BindException: The
address
is not available
at junit.framework.Assert.fail(Assert.java:47)
at
org.apache.harmony.luni.tests.java.net.ServerSocketTest.test_setReuseAddressZ(ServerSocketTest.java:760)
at java.lang.reflect.VMReflection.invokeMethod(VMReflection.java)
at java.lang.reflect.Method.invoke(Method.java:317)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at
org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
I found the default value of ServerSocket.getReuseAddress() on Linux
should
be true, but on Harmony is false, following simple test show this:
ServerSocket serverSocket = new ServerSocket();
System.out.println(serverSocket.getReuseAddress());
and I found it's introduced by commit r723103, and the code set
default
value is removed intended, so I think there must be a reason. From
spec,
it's undefined:
When a ServerSocket is created the initial setting of SO_REUSEADDR
is not
defined
So both Harmony and RI are reasonable.
Should we follow RI or mark it as non-bug difference and correct
the test
case?
--
Best Regards,
Regis.
--
Best Regards,
Regis.
--
Best Regards,
Regis.
